Surgical stapling apparatus

Description

BACKGROUND
Technical Field

The present disclosure relates to surgical stapling apparatuses. More particularly, the present disclosure relates to surgical stapling apparatuses including knife drive lockout mechanisms.

Description of Related Art

Surgical stapling apparatuses that are configured to staple and, subsequently, sever tissue are well known in the art. Such stapling apparatuses, typically, include, a housing and an elongated member that extends from the housing. In certain instances, a multi use loading unit (MULU) that includes a reload may be configured to releasably couple to a distal end of the elongated member. Alternatively, the reload may be fixedly supported at the distal end of the elongated member. In either of the aforementioned reload configurations, an anvil and cartridge may be provided on jaws of the reload and configured to staple tissue. A knife (or other suitable device) may be utilized to sever the stapled tissue. The knife may be actuated via one or more actuation devices operably associated with the surgical stapling apparatus and translated through the anvil and cartridge to sever the staple tissue.

While the aforementioned reload configurations provide numerous advantages, it may be desirable to prevent inadvertent firing of the knife of the surgical stapler when a staple cartridge is not installed or is spent.

SUMMARY

As can be appreciated, surgical stapling apparatuses that include knife drive lockout mechanisms may prove useful in the surgical arena.

Embodiments of the present disclosure are described in detail with reference to the drawing figures wherein like reference numerals identify similar or identical elements. As used herein, the term “distal” refers to the portion that is being described which is further from a user, while the term “proximal” refers to the portion that is being described which is closer to a user.

An aspect of the present disclosure provides a surgical stapling apparatus (stapler). The stapler includes a housing and an elongated member that extends therefrom. The elongated member is configured to operably support a reload at a distal end thereof. A cartridge is configured to selectively couple to a first jaw member of the reload. The cartridge includes one or more resilient members thereon. An anvil operably supported on a second jaw member of the reload is configured to compress one or more fasteners ejected from the cartridge. The anvil includes one or more locking members thereon. A knife is configured to translate through the cartridge and anvil when the first and second jaw members are in a closed configuration. Engagement between the knife and the resilient member(s) causes the resilient member(s) to move from an initial configuration that allows the knife to travel distally past the at least one locking member when the knife is fired to a final configuration that allows the locking member(s) to engage the knife. The surgical stapling apparatus may include a firing mechanism that is configured to translate the knife through the anvil and cartridge.

The anvil and cartridge may each include one or more recesses disposed thereon that are configured for receipt of the resilient member(s) therethrough. The recess(es) on the anvil and cartridge may be in vertical registration with one another.

The resilient member(s) may be in the form of a spring-clip. The spring clip may include a generally arcuate configuration that is defined by opposing sidewalls. One or both of the opposing sidewalls may have one or more flanges thereon configured to releasably engage a tissue contacting surface of cartridge.

The locking member(s) may include a generally elongated configuration and may include one or more cam surfaces that are disposed at a proximal end thereof. The cam surface(s) may be configured to engage a flange disposed on a top portion of the knife. In the initial configuration, the resilient member(s) may be configured to raise the locking member(s) a predetermined distance above a tissue contacting surface of the cartridge so as to prevent engagement between the cam surface(s) and the flange such that the knife is allowed to travel distally past the locking member(s) when the knife is fired.

An aspect of the present disclosure provides a surgical stapling apparatus (stapler). The stapler includes a housing and an elongated member that extends therefrom. The elongated member is configured to operably support a reload at a distal end thereof. The reload includes first and second jaw members. The first jaw member is configured to operably couple to a cartridge that includes one or more resilient member(s) thereon. An anvil operably supported on a second jaw member of the reload is configured to compress one or more fasteners ejected from the cartridge. The anvil includes one or more locking member(s) thereon. A knife is configured to translate through the cartridge and anvil when the cartridge is coupled to the first jaw member and when the first and second jaw members are in a closed configuration. The locking member(s) are movable from a first configuration when the cartridge is not coupled to the first jaw member for engaging the knife to a second configuration when the cartridge is coupled to the first jaw member for allowing the knife to travel distally past the at least one locking member when the knife is fired.

When the cartridge is coupled to the first jaw member, the resilient member(s) may be movable from an initial configuration in which the resilient member(s) may be disposed within both the anvil and cartridge to a final configuration in which the resilient member(s) may be disposed solely within the cartridge. In the initial configuration, the knife is allowed to travel distally past the locking member(s) when the knife is fired. Moreover, in the final configuration the locking member(s) are configured to engage the knife. The surgical stapling apparatus may include a firing mechanism that is configured to translate the knife through the anvil and cartridge.

The locking member(s) may include a generally elongated configuration and may include one or more cam surfaces that are disposed at a proximal end thereof. The cam surface(s) may be configured to engage a flange disposed on a top portion of the knife. In the initial configuration, the resilient member(s) causes the locking member(s) to pivot so as to prevent engagement between the cam surface(s) and the flange such that the knife is allowed to travel distally past the locking member(s) when the knife is fired.

An aspect of the present disclosure also provides a cartridge that is configured for use with a surgical stapling apparatus. The cartridge includes a housing configured to selectively couple to a first jaw member of the surgical stapling apparatus. The cartridge includes one or more recesses that are configured to receive one or more resilient members therein. The resilient member(s) may be configured for insertion through a corresponding recess disposed on an anvil of a second jaw member of the surgical stapling apparatus. Insertion of the resilient member(s) through the corresponding recess(es) disposed on the anvil results in engagement between the resilient member(s) and one or more locking members operably disposed on the anvil; this allows a knife of the surgical stapling apparatus to travel distally past the locking member(s) when the knife is fired and allows the locking member(s) to engage the knife.

The resilient member(s) may be in the form of a spring-clip. The spring clip may include a generally arcuate configuration that is defined by opposing sidewalls each having one or more flanges thereon configured to releasably engage a tissue contacting surface of cartridge.

An aspect of the present disclosure provides a reload for use with a surgical instrument. The reload includes first and second jaw members that are pivotably coupled to each other. The first jaw member includes a channel and a sled is disposed in the channel. The sled is translatable between proximal and distal portions of the channel. An actuation member is located in the first jaw member and is movable between proximal and distal portions of the channel. A cartridge is removably coupled to the channel and includes a plurality of pushers. A lockout mechanism includes an actuation plate that is disposed in the cartridge. The actuation plate is repositionable between a first position and a second position. The actuation member is free to move between the proximal and distal portions when the actuation plate is in the first position. The actuation member is blocked from movement when the actuation plate is in the second position. A biasing member is coupled to the first jaw member and urges the actuation plate towards the second position. Distal movement of the actuation member transitions the actuation plate from the first position to the second position.

Engagement of the actuation plate and a pusher may maintain the actuation plate in the first position. The pusher may be a staple driving pusher. Distal movement of the actuation member may reposition the pusher such that the biasing member urges the actuation plate from the first position to the second position. When the actuation plate is in the first position, the actuation member is translatable from the proximal portion of the channel to the distal portion of the channel. Moreover, when the actuation plate is in the second position, the actuation member is maintained at the proximal portion of the channel.

An aspect of the present disclosure provides a reload for use with a surgical instrument. The reload includes first and second jaw members that are pivotably coupled to each other. The first jaw member includes a channel. An actuation member is located in the first jaw member and is translatable between proximal and distal portions of the channel. A cartridge is removably coupled to the channel and operably associated with the actuation member. A finger is rotatably coupled to a top surface of the cartridge, the finger rotatable between a first position and a second position. A biasing member is operatively associated with the finger. An arm is rotatably coupled to a bottom surface of the channel and is rotatable between open and closed positions in response to rotation of the finger between first and second positions. The actuation member is translatable distally through the cartridge when the arm is in the open position and is inhibited from distal translation when the arm is in the closed position.

When the actuation member advances distally through the cartridge, the actuation member engages the finger and rotates the finger from the first position to the second position, thereby rotating the arm from the closed position to the open position. The biasing member urges the finger towards the first position such that the arm is urged towards the closed position.

An aspect of the present disclosure provides a reload for use with a surgical instrument. The reload includes first and second jaw members that are pivotably coupled to each other. The first jaw member includes a channel. An actuation member is located in the first jaw member and is movable between proximal and distal portions of the channel. The cartridge is removably coupled to the channel and operably associated with the actuation member. An arm is pivotably disposed in a slot of the channel. A biasing member is operatively coupled to the arm and urges the arm out of alignment with a longitudinal axis of the channel to a position blocking the channel. When the cartridge is positioned in the channel, the arm is urged into longitudinal alignment with the channel such that the actuation member is free to move through the cartridge. Moreover, when the cartridge is removed from the channel, the arm is urged out of longitudinal alignment with the channel such that the actuation member is blocked from movement through the channel.

A bottom surface of the cartridge may include a protrusion that is engageable with the arm such that distal translation of the actuation member deforms the tab. The actuation member may be translatable proximally over the deformed tab and inhibited from distal translation over the deformed tab.

An aspect of the present disclosure provides a reload for use with a surgical instrument.

The reload includes first and second jaw members that are pivotably coupled to each other and define a slot. The first jaw member includes a channel. A sled is disposed in the channel and is translatable between proximal and distal portions of the channel. An actuation member is located in the first jaw member and is movable through the slot between proximal and distal portions of the channel. A cartridge is removably coupled to the channel and includes a plurality of pushers. The pusher may be a staple driving pusher. A lockout mechanism includes a latch that is disposed in the cartridge. The latch is repositionable between a first position and a second position. The latch configured to block the slot in the second position. The latch may have a tapered surface that is engaged by the actuation member when the actuation member moves in the proximal direction.

The actuation member free to move between the proximal and distal portions when the latch is in the first position. The actuation member is blocked from movement when the actuation plate is in the second position. A biasing member urges the latch towards the second position. And, a plate holds the latch in the first position.

Engagement of the plate and a pusher maintains the plate in a first position holding the latch in the first position. The plate may have a second position that allows the latch to move to the second position to maintain the actuation member at the proximal portion of the channel. The actuation member may move in a distal direction to actuate the surgical instrument and the actuation member may move in a proximal direction after actuating the instrument.

BRIEF DESCRIPTION OF THE DRAWING

Various embodiments of the present disclosure are described hereinbelow with references to the drawings, wherein:

FIG. 1 is a perspective view of a powered surgical stapling apparatus;

FIG. 2 is a perspective view of a manual surgical stapling apparatus;

FIG. 3A is a perspective view of a reload of FIGS. 1 and 2 including a drive lockout mechanism according to an embodiment of the instant disclosure;

FIG. 3B is an exploded, perspective view of the reload of FIG. 3A with the parts separated;

FIG. 4A is a partial, perspective view of a removable cartridge including a spring clip shown in an extended configuration;

FIG. 4B is a perspective view of a proximal portion of the cartridge with the spring clip of FIG. 4A removed;

FIG. 5 is a perspective view of the spring clip of FIG. 4A;

FIG. 6 is a perspective view of an anvil uncoupled to a corresponding jaw member to illustrate a recess configured to receive the spring clip therein;

FIG. 7 is a perspective view of a pivot beam that is configured to releasably engage the spring clip;

FIG. 8 is a partial, perspective view of the anvil and cartridge with a top portion of the anvil being removed to illustrate a knife in a pre-fired configuration and the spring clip and pivot beam in an engaged configuration;

FIG. 9 is a cut-away view taken along line-segment 9-9 in FIG. 8;

FIGS. 10-12 are perspective views illustrating a firing sequence of the knife through the cartridge and anvil;

FIG. 13 is a perspective view of a reload including a drive lockout mechanism according to an alternate embodiment of the present disclosure;

FIG. 14 is a perspective view of the reload and a cartridge depicted in FIG. 13 uncoupled from one another;

FIG. 15 is an exploded, perspective view of the reload with the parts separated and removed;

FIG. 16 is an exploded, perspective view of the cartridge assembly with parts separated;

FIG. 17 is an exploded, bottom view of a sled of the cartridge with parts separated;

FIG. 18 is a bottom view of the sled of FIG. 17 in an assembled configuration;

FIG. 19 is an exploded, rear perspective view of the sled with parts separated;

FIG. 20 is a rear perspective view of the sled of FIG. 19 in an assembled configuration;

FIG. 21 is an enlarged area of detail of FIG. 15 illustrating a latch;

FIG. 22 is a perspective view of the latch depicted in FIG. 21 shown inverted;

FIG. 23 is perspective view of the reload with parts removed;

FIG. 24 is an enlarged area of detail of FIG. 23;

FIG. 25 is a partial, perspective view of the reload with parts removed illustrating a pivot assembly;

FIG. 26 is a cross-sectional view taken along line portion 26 in FIG. 25;

FIG. 27 is a partial, cross-sectional view of the cartridge illustrating the cartridge being installed to a corresponding jaw member;

FIG. 28 is a partial, cross-sectional view of the cartridge illustrating the cartridge fully installed to the corresponding jaw member;

FIG. 29 is a partial, cross-sectional view of the cartridge illustrating the cartridge being approximated towards;

FIG. 30 is a partial, cross-sectional view of the cartridge illustrating the anvil and cartridge being in a fully approximated configuration;

FIG. 31 is a partial, cross-sectional view of the cartridge illustrating a firing motion of a knife of the reload;

FIG. 32 is a partial, cross-sectional view of cartridge illustrating the knife being retracted back to a pre-fired configuration;

FIG. 33 is a partial, cross-sectional view of the cartridge illustrating the anvil and cartridge in an open configuration and the knife in the retracted configuration;

FIG. 34 is a partial, cross-sectional view of the cartridge illustrating the knife in the retracted configuration and the latch in position for removal of the reload from a trocar;

FIG. 35 is a partial, cross-sectional view of the cartridge illustrating the knife in the retracted configuration and the latch in a locked out configuration;

FIG. 36 is perspective view of a reload with parts removed and including a drive lockout mechanism according to another embodiment of the present disclosure;

FIG. 37 is an enlarged area of detail of FIG. 36;

FIG. 38 is an exploded, perspective view of the reload depicted in FIG. 36;

FIG. 39 is an exploded, perspective view of a cartridge assembly with parts separated;

FIG. 40 is an enlarged area of detail of FIG. 38 illustrating a latch;

FIG. 41 is a perspective view of the latch depicted in FIG. 21 shown inverted;

FIG. 42 is a perspective view of the reload with parts removed illustrating a pivot assembly;

FIG. 43 is a perspective view of the reload with parts removed including a portion of the pivot assembly to illustrate a distal end of a knife assembly;

FIG. 44 is a partial, cross-sectional view of the reload with the cartridge not installed on a corresponding jaw member;

FIG. 45 is a partial, cross-sectional view of the cartridge installed on a corresponding jaw member;

FIG. 46 is a partial, cross-sectional view of the cartridge illustrating a knife being translated therethrough;

FIG. 47 is a partial, cross-sectional view of the cartridge illustrating a knife in a retracted configuration and locked out;

FIG. 48 is a perspective view of a reload with parts removed and including a drive lockout mechanism according to another embodiment of the present disclosure;

FIG. 49 is an enlarged area of detail of FIG. 48;

FIG. 50 is a partial, cut-away view of a cartridge shown in a pre-fired configuration;

FIG. 51 is an exploded, perspective view of the cartridge with parts removed;

FIG. 52 is a perspective view of an actuator of the cartridge depicted in FIGS. 50 and 51;

FIG. 53 is a perspective view of the actuator depicted in FIG. 52 shown inverted;

FIG. 54 is a perspective view of a rotating interlock of the cartridge;

FIG. 55 is a top elevational view of the cartridge;

FIG. 56 is a cut-away view taken along line section 56-56 shown in FIG. 55;

FIG. 57 is a partial, perspective view of the cartridge with parts removed illustrating a knife during a firing sequence;

FIG. 58 is a cut-away view taken along line section 58-58 shown in FIG. 57;

FIG. 59 is a partial, perspective view of the cartridge with parts removed illustrating the knife in a locked-out configuration;

FIG. 60 is a perspective view of a reload with parts removed and including a drive lockout mechanism according to another embodiment of the present disclosure;

FIG. 61 is an enlarged area of detail of FIG. 60;

FIG. 62 is an exploded, perspective view of the cartridge assembly of FIG. 60 with parts separated;

FIG. 63 is an enlarged area of detail of FIG. 62;

FIG. 64 is a partial, perspective view of a proximal end of the cartridge;

FIG. 65 is an exploded, perspective view of the cartridge assembly with parts separated;

FIG. 66 is an exploded, perspective view of a jaw member of the reload with parts separated;

FIG. 67 is an enlarged area of detail of FIG. 65 illustrating an actuator of the cartridge;

FIG. 68 is an enlarged area of detail of FIG. 66 illustrating a locking assembly with parts separated;

FIG. 69 is a perspective view illustrating a spring clip and locking lever of the locking assembly coupled to one another;

FIGS. 70A-70C are perspective views illustrating the locking lever and spring clip in various configurations;

FIG. 71 is a perspective view of the cartridge shown with a portion of a cover removed;

FIG. 72 is an enlarged area of detail of FIG. 71;

FIG. 73 is a partial, cut-away view of the cartridge illustrating the knife, actuator and locking assembly shown in a pre-fired configuration;

FIG. 74 is a partial, top elevational view of the cartridge of FIG. 73;

FIG. 75 is a partial, cut-away view of the cartridge illustrating a firing sequence of the knife with the actuator and locking assembly shown in a locked out configuration;

FIG. 76 is a partial, top elevational view of the cartridge of FIG. 75;

FIG. 77 is a perspective view of a reload with parts removed and including a drive lockout mechanism according to another embodiment of the present disclosure;

FIG. 78 is an enlarged area of detail of FIG. 77;

FIG. 79 is a top elevational view of a cartridge coupled to a jaw member of FIG. 77;

FIG. 80 is an enlarged area of detail of FIG. 79;

FIG. 81 is an exploded, perspective view the jaw member with parts separated;

FIG. 82 is a right perspective view of a locking lever;

FIG. 83 is a left perspective view of the locking lever depicted in FIG. 82;

FIG. 84 is a perspective view of an actuator;

FIG. 85 is an enlarged area of detail of FIG. 81;

FIG. 86 is a partial, cross sectional view of a distal end of the reload;

FIG. 87 is a perspective view of the jaw member and cartridge uncoupled from one another;

FIG. 88 is an enlarged area of detail of FIG. 87;

FIG. 89 is a partial, top elevational view of the cartridge with parts removed in a pre-fired configuration;

FIG. 90 is a partial, perspective view of the cartridge with parts removed in the pre-fired configuration;

FIG. 91 is a partial, top elevational view of the cartridge with parts removed in a post-fired configuration;

FIG. 92 is a partial, perspective view of the cartridge with parts removed in the post-fired configuration;

FIG. 93 is a perspective view of a reload with parts removed and including a drive lockout mechanism according to another embodiment of the present disclosure;

FIG. 94 is a partial, cross-sectional view taken along line section 94-94 shown in FIG. 93;

FIG. 95 is an enlarged area of detail of FIG. 94;

FIG. 96 is an exploded, perspective view of the reload with parts removed and separated;

FIG. 97 is an enlarged area of detail of FIG. 96;

FIG. 98 is a partial, cross-sectional view of jaw members of the reload with the cartridge installed;

FIG. 99 is an enlarged area of detail of FIG. 98;

FIG. 100 is a partial, cross-sectional view of the jaw members in an approximated and pre-fired configuration;

FIG. 101 is a partial, cross-sectional view of the jaw members in an approximated configuration and illustrating a knife being translated therethrough;

FIG. 102 is a partial, cross-sectional view of the jaw members in an approximated and post-fired configuration with the knife in a retracted configuration;

FIG. 103 is a partial, cross-sectional view of reload including a drive lockout mechanism according to another embodiment of the present disclosure;

FIG. 104 is an exploded view of a pawl of an anvil with parts separated;

FIG. 105 is a perspective view of a reload with parts removed and including a drive lockout mechanism according to another embodiment of the present disclosure;

FIG. 106 is an enlarged area of detail of FIG. 105;

FIG. 107 is a perspective view of a jaw member depicted in FIG. 105;

FIG. 108 is an enlarged area of detail of FIG. 107;

FIG. 109 is a proximal end of the jaw member depicted in FIG. 107 with parts separated;

FIG. 110 is an exploded view of a lock out assembly associated with the reload depicted in FIG. 105 with parts separated;

FIG. 111 is a partial, top cross sectional view of a jaw member with the locking member in an unlocked configuration;

FIG. 112 is a partial, top cross sectional view of a jaw member with the locking member in a locked configuration;

FIG. 113 is a cut-away view taken along line section 113-113 shown in FIG. 112;

FIG. 114 is a partial, front perspective view of a proximal end of a cartridge configured for use with the reload depicted in FIG. 105;

FIG. 115 is a partial, back perspective view of proximal end of the cartridge depicted in FIG. 114;

FIG. 116 is an exploded view of the cartridge with parts separated;

FIG. 117 is a cut-away view taken along line section 117-117 shown in FIG. 115;

FIG. 118 is a perspective view of an actuation sled associated with the cartridge having an actuator coupled thereto;

FIG. 119 is a side, perspective view of the actuator;

FIG. 120 is a front, perspective view of the actuation sled;

FIG. 121 is a cut-away view taken along line section 121-121 shown in FIG. 118;

FIG. 122 is a top elevational view of the cartridge and jaw member coupled to one another;

FIG. 123 is an enlarged area of detail of FIG. 122;

FIG. 124 is a partial, top cross-sectional view of the cartridge and jaw member coupled to one another with a knife in a pre-fired configuration;

FIG. 125 is a partial, top cross-sectional view of the cartridge and jaw member coupled to one another with the knife in a post-fired configuration;

FIG. 126 is a partial, top elevation view of the cartridge and jaw member coupled to one another with the locking assembly in a locked out configuration;

FIG. 127 is a cut-away view taken along line section 127-127 shown in FIG. 126;

FIG. 128 is a schematic, elevation view of a knife assembly of a reload including a drive lockout mechanism according to another embodiment of the present disclosure;

FIG. 129 is a schematic, elevation view of a knife assembly of a reload in an unlocked configuration;

FIG. 130 is a top, cross-sectional view of the cartridge illustrating the knife in a locked configuration;

FIG. 131 is a schematic, elevation view of the knife assembly uncoupled from a locking lever;

FIG. 132 is a perspective view of the locking lever;

FIG. 133 is a perspective view of the knife assembly;

FIGS. 134-135 are top, cross-sectional views of a jaw member and cartridge of a reload including a drive lockout mechanism according to another embodiment of the present disclosure with a locking lever in unlocked and locked configurations;

FIG. 136 is a schematic, plan view of the knife assembly in a locked configuration;

FIG. 137 is a perspective view of the knife assembly;

FIG. 138 is a schematic view of a jaw member and knife of a reload including a drive lockout mechanism according to another embodiment of the present disclosure with a locking lever in a locked configuration;

FIGS. 139-140 are schematic views of the jaw member having a cartridge installed and with the locking lever in an unlocked and locked configuration, respectively;

FIG. 141 is a partial, perspective view of a reload with parts removed and including a drive lockout mechanism according to another embodiment of the present disclosure;

FIG. 142 is an enlarged area of detail of FIG. 141;

FIG. 143 is an exploded view with parts separated of a jaw member of the reload;

FIG. 144 is a perspective view of a cam block and lockout structure;

FIG. 145 is another perspective view of a cam block and lockout structure associated with the jaw member;

FIG. 146 is a partial, perspective view of the reload with parts removed illustrating the cam block and lockout structure without a cartridge installed;

FIG. 147 is a partial, perspective view of the reload with parts removed illustrating the cam block and lockout structure with a cartridge installed;

FIG. 148 is partial perspective with of the releasable reload with parts removed and with the cartridge installed;

FIG. 149 is an enlarged area of detail of FIG. 148;

FIG. 150 is a partial, perspective view of a reload with parts removed and including a drive lockout mechanism according to another embodiment of the present disclosure;

FIG. 151 is an enlarged area of detail of FIG. 150;

FIG. 152 is a perspective view of a cartridge configured for use with the reload depicted in FIG. 150;

FIG. 153 is an enlarged area of detail of FIG. 152;

FIG. 154 is a partial, perspective view of the cartridge illustrating a knife just after firing thereof;

FIG. 155 is a partial, perspective view of the cartridge illustrating with the knife being moved to a retracted configuration;

FIG. 156 is a partial, perspective view of the cartridge illustrating with the knife in the retracted configuration;

FIG. 157 is a partial, perspective view looking into a cartridge assembly configured for use with a reload including a drive lockout mechanism according to another embodiment of the present disclosure in a pre-fired configuration; and

FIG. 158 is a is a partial, perspective view looking into a cartridge assembly configured for use with a reload including a drive lockout mechanism according to another embodiment of the present disclosure in a post-fired configuration.

DETAILED DESCRIPTION

Detailed embodiments of the present disclosure are disclosed herein; however, the disclosed embodiments are merely examples of the disclosure, which may be embodied in various forms. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present disclosure in virtually any appropriately detailed structure.

In accordance with the instant disclosure, various drive lockout mechanisms are disclosed herein and are configured for use with reloads that are adapted to couple to one or more types of surgical stapling apparatuses. The various drive lockout mechanisms are configured to prevent misfiring of a knife without a cartridge installed, or firing with a spent cartridge installed.

FIG. 1 illustrates a powered surgical stapling apparatus shown generally as 100. FIG. 2 illustrates a manual surgical stapling apparatus shown generally as 200. The powered apparatus includes one or more motors and an internal or external power source, whereas the manual apparatus has a movable handle 136 and a mechanism for driving the functions of the apparatus. See U.S. Pat. Nos. 5,865,361; 5,782,396; International WO 04/032,760; and U.S. Patent Publication Nos. 2010/0276741 and 2013/0098968, the entire contents of each of these disclosures is hereby incorporated by reference.

Briefly, the surgical stapling apparatus 100, 200 includes a housing 102, a retractor 116, a firing mechanism 116 (FIG. 2), an elongated member 104 extending from housing 102, and a reload 106 that is releasably coupled to a distal end of elongated member 104. Reload 106 includes a proximal shaft portion 109 having a distal end which a tool assembly including first and second jaw members 108, 110. First jaw member 108 is configured to support a cartridge 112 which includes a plurality of fasteners 117a and a corresponding plurality of pusher members 117b that are engaged with fasteners 117a (see FIG. 3B). Cartridge 112 includes one or more retention slots 119 that extend longitudinally along a tissue contacting surface 121 of a cartridge housing 123 and are configured to house fasteners 117a (FIG. 3B). Cartridge housing 123 (FIG. 3B) is configured to releasably couple to first jaw member 108 via one or more suitable coupling methods. A removable and replaceable cartridge assembly is disclosed in U.S. Patent Publication No. 2013/0098965 entitled Multi-Use Loading Unit, the entire disclosure of which is hereby incorporated by reference herein. In any of the embodiments disclosed herein, a removable and replaceable cartridge assembly may be coupled to a jaw using detents, latches, clips and the like. Second jaw member 110 is provided with an anvil 111 (as best seen in FIG. 3B) which defines a plurality of buckets or depressions 107 (see FIG. 3A) that are configured to receive corresponding fasteners 117a when fasteners 117a are ejected from cartridge 112.

FIG. 3B illustrates components that are housed within shaft 109. A drive member includes a drive beam 103 having a working end 101 which supports a knife 105. Working end 101 includes an I-beam configuration having top and bottom flanges 118a, 118b and includes a distal abutment surface 118c which engages a central support wedge 113 of actuation sled 115 (see FIG. 3B). Working end 101 is configured to move through a knife channel 114 (FIG. 3B) defined in cartridge 112 from a retracted position to an advanced position for severing stapled tissue positioned between the jaw 108, 110. Knife blade 105 travels slightly behind actuation sled 115 during a stapling procedure such that an incision is formed in tissue after the tissue has been stapled.

A pivot assembly 150 (FIG. 3A) is provided at a distal end of shaft 109 and couples first and second jaw members 108, 110 to shaft 109. Pivot assembly 150 includes lower and top portions 151b, 151a that are operably coupled to one another and the tool assembly to facilitate articulation of the tool assembly about an axis transverse to a longitudinal axis of shaft 104 (FIG. 3B).

For a more detailed discussion of the construction and operation of reload 106, reference may be made to U.S. Pat. Nos. 5,865,361 and 7,225,963, the entire contents of which are incorporated herein by reference.

In accordance with the instant disclosure, reload 106 includes a locking mechanism according to an embodiment of the instant disclosure. Specifically, and with reference to FIGS. 4A-4B, cartridge housing 123 includes one or more recesses 125 (FIG. 4B) of suitable configuration that are configured to receive and/or operably house one or more resilient members 126 (see FIG. 5). A single recess 125 which opens onto a top surface of the cartridge 112 is shown in the illustrated embodiment. Recess 125 is configured to allow flexure of legs 128a, 128b of the resilient member 126 within the confines of recess 125.

Continuing with reference to FIG. 5, resilient member(s) 126 may be formed from any suitable resilient material including but not limited to plastic, rubber, metal, etc. In the illustrated embodiment, resilient member is made from a relatively soft plastic and formed into a spring-clip 127. Spring-clip 127 is movable from an extended position (FIG. 4a) to a retracted position (FIG. 10) and includes a generally arcuate configuration and is defined by opposing legs 128a, 128b that form a generally “U” configuration; this “U” configuration facilitates positioning spring-clip 127 within recess 125. In accordance with the instant disclosure, prior to use of cartridge 112, spring-clip 127 extends a predetermined distance above tissue contacting surface 121. To this end, one or both of legs 128a, 128b may include one or more flanges 129 (FIGS. 4A and 5) that are configured to releasably engage a surface 121 of cartridge 112 adjacent proximal end of the tissue contacting surface of cartridge 112 (FIG. 4A). In the illustrated embodiment, each of legs 128a, 128b includes a single flange 129. Moreover, one or both of legs 128a, 128b may have beveled or angled ends 131a, 131b positioned for engagement with top flange 118a of the knife 105 when knife 105 is advanced from a retracted position towards an advanced position. In the illustrated embodiment, each of sidewalls 128a, 128b includes angled surfaces 131a, 131b that culminate at tips 133a, 133b. Resilient member(s) 126 are configured for insertion through a corresponding recess 130 disposed on anvil 111 (FIGS. 6 and 10). Recess 130 on anvil 111 is in vertical registration with recess 125 of cartridge 112 to facilitate insertion of resilient member 126 within recess 130.

Referring now to FIG. 6, anvil 111 is illustrated uncoupled from jaw member 110 to illustrate recess 130. Recess 130 is of suitable configuration to receive spring-clip 126 therein. Specifically, angled end surfaces 131a, 131b are configured for positioning within recess 130 when a newly inserted (e.g., a pre-fired) cartridge 112 is coupled to jaw member 108 and jaw members 108, 110 are approximated, see FIG. 9 for example. In the extended configuration, spring clip 127 prevents movement of the locking member 132 (FIG. 7) within an internal cavity 134 (see FIG. 9 for example) of jaw member 110 to a blocking position as will be described in further detail below.

With reference to FIG. 7, locking member 132 has a generally elongated configuration and includes a distal end 124 that is operably coupled to a side wall 138 of anvil 111 to facilitate movement of the locking member 132 upwardly and transversely from an outer surface of anvil 111 towards the center of anvil 111 to a position to obstruct movement of the working end 101 of drive member (FIG. 8). A cam surface 137 is disposed at a proximal end 140 of locking member 132 and is configured to engage top flange 118a disposed on a top portion 144 of knife 105 (FIGS. 8 and 11-12). Engagement between cam surface 137 and top flange 118a prevents knife 105 from moving distally past locking member 132 after the cartridge 112 has been fired as will be described in further detail below. A sidewall 135 of locking member 132 is configured to contact a top portion 144 of knife 105 as knife 105 is moved from the advanced configuration to the retracted configuration (see FIG. 11 for example) to move the locking member 132 from the locking position (FIG. 12) to a non-blocking position to allow the knife to move from the retracted position.

In use, when cartridge 112 is not coupled to jaw member 108, locking member 132 is in the blocking position for engaging knife 105 (or component associated therewith, e.g., top flange 118a). That is, cam surface 137 is flush with the plane of translation of knife 105 such that an end of locking member 132 engages top flange 118a to prevent knife 105 from traveling distally past locking member 132 (see FIG. 12). Thus, the locking member 132 prevents firing of apparatus 100, 200 when a cartridge 112 has not been inserted into jaw 108.

When cartridge 112 is coupled to jaw member 108, locking member 132 pivots upwardly as a result of contact with resilient member 126 (see FIGS. 8-9). This contact allows working end 101 of the drive member to travel distally past the locking member 132 when knife 105 is fired (FIG. 10). Specifically, this contact raises the cam surface 137 off the plane of translation of working end 101 and above top flange 118a, which, in turn, prevents engagement therebetween so as to allow knife 105 to travel distally past locking member 132 when working end 101 is advanced. Essentially, top flange 118a slides beneath cam surface(s) 137 as knife 105 is translated distally.

Contact between top flange 118a and tips 133a, 133b and/or angled surfaces 131a, 131b as the working end 101 is advanced causes flanges 129 to disengage from tissue contacting surface 121 of cartridge 112, which, in turn, causes tips 133a, 133b and/or angled surfaces 131a, 131b to fall beneath the translation plane of working end 101 (FIG. 10). This allows locking member 132 to return to its initial configuration (FIG. 11) obstructing distal movement of the working end 101.

As working end 101 is moved proximally back to its retracted configuration, top portion 144 contacts a sidewall 135 (FIG. 8) of locking member 132 to pivot locking member 132 sideways towards sidewall 138 of anvil 111. Once top portion 144 has been moved proximally past cam surface(s) 137 of locking member 132, locking member 132 again returns to its initial configuration. In its initial configuration, cam surface 137 is flush with the plane of translation of working end 101 and positioned to engage top portion 144 of working end 101 (FIG. 12).

The unique configuration of locking member 132 and resilient member 126 overcomes the aforementioned drawbacks that are, typically, associated with conventional surgical stapling apparatus. Specifically, the locking member 132 prevents firing of the stapling apparatus 100, 200 when a cartridge 112 is not coupled to jaw 108 or when cartridge 112 has already been fired.

From the foregoing and with reference to the various figure drawings, those skilled in the art will appreciate that certain modifications can also be made to the present disclosure without departing from the scope of the same. For example, while the surgical stapling apparatuses 100, 200 have been described herein as including one locking member 132 and one corresponding resilient member 126, it is within the purview of the present disclosure to utilize two or more locking members 132 and corresponding resilient members 126.

Additionally, while surgical stapling apparatuses 100, 200 have been described herein utilizing a reload 106 the drive lockout mechanism described above can be supported on the tool assembly of any stapler having a replaceable cartridge.

In addition, reloads that include other types of locking mechanisms may also be utilized with surgical stapling apparatuses 100, 200. The following reloads are similar in concept and design to reload 106. Accordingly, only those features unique to the hereinafter described embodiments of reloads are described in detail.

With reference to FIGS. 13-35, and initially with reference to FIGS. 13-14, a reload 206 includes a locking mechanism according to another embodiment of the instant disclosure and is configured for use with surgical stapling apparatuses 100, 200 (FIGS. 1 and 2).

Reload 206 is generally as described above but the configuration of the locking mechanism has changed as described below. Reload 206 includes shaft 209 that supports a tool assembly 207 including jaw members 208, 210, respectively. Jaw member 208 is configured to releasably engage a cartridge 212 and jaw member 210 is provided with an anvil 211. Jaw members 208, 210 function in a manner as described above with respect to jaw members 108, 110.

A pivot assembly 250 is configured to function in a manner as described above with respect to pivot assembly 150 and includes top and lower portions 251a, 251b (see FIG. 15 for example). Unlike lower portion 151b, however, lower portion 251b is configured to operably support a pair of latches 232a, 232b that are operable to lock a working end 101 of a drive member in a retracted configuration. Specifically, lower portion 251b includes a pair of distally extending leg members 253a, 253b (FIGS. 15 and 25). Leg members 253a, 253b are spaced-apart a predetermined distance from one another to receive knife 205 (FIG. 15) so as to allow working end 101 to move through a firing sequence of surgical stapling apparatuses 100, 200, as will be described in greater detail below.

A shelf 255 (FIGS. 24-25) of suitable configuration is provided on lower portion 251b and is positioned proximally with respect to latches 232a, 232b. Shelf 255 extends across lower portion 251b and is configured to support finger portions 257a, 257b of latches 232a, 232b, respectively. A pair of spaced-apart holders 259a, 259b are provided on lower portion 251b and are positioned adjacent shelf 255. Holders 259a, 259b extend distally from lower portion 251b such that a distal face of holders 259a, 259b aligns with a distal edge of shelf 255 (FIG. 26). Holders 259a, 259b are configured to engage finger portions 257a, 257b to maintain direct contact between finger portions 257a, 257b and shelf 255. In embodiments, holders 259a, 259b may be replaced with a single holder that extends along an entire length of the shelf 255.

Continuing with reference to FIG. 25, leg member 253b includes a generally flat medial portion 265b (FIGS. 15 and 25) that defines a cavity 261b of suitable configuration defined therein that is configured to house a spring 267, e.g., a compression spring, (FIG. 26). Medial portion 265b is angled in a direction towards a toe portion 269b of leg member 253b. Toe portion 269b extends distally from medial portion 265b and includes a generally flat top surface 271b (FIG. 25) that is elevated a predetermined distance above medial portion 265b. Top portion 271b is configured to contact an offset flange portion 273b (FIG. 24) of cartridge 212. A proximal face 272b (FIG. 26) of toe portion 269b is angled toward medial portion 265b and a sidewall 274b is angled in an outward direction (FIG. 25) away from top surface 271b. A cavity 263b of suitable configuration is defined in toe portion 269b and is configured to house an optional spring 270, e.g., a compression spring, (FIG. 26). Spring 270 may be configured to bias cartridge 212 to the open position.

A second toe portion 269a extends distally from a medial portion (not explicitly shown) of leg member 253a and defines a cavity 263a that is configured to house spring 270 (FIG. 25). Toe portion 269a includes a generally flat top surface 271a (FIG. 25) that contacts a corresponding offset flange portion 273a (FIG. 24) of cartridge 212. The medial portion of leg member 253a includes a cavity (not explicitly shown) that is configured to house a spring 270.

Referring to FIGS. 16-19, actuation sled 215 is similar to actuation sled 115 and includes a central support 213. Unlike actuation sled 115, however, actuation sled 215 includes a blocking member 217. Blocking member 217 may be monolithically formed with actuation sled 215 or blocking member 217 may be a separate component that is coupled to actuation sled 215 via one or more suitable coupling methods, e.g., press-fit, friction-fit, adhesive, etc. In the illustrated embodiment, actuation sled 215 and blocking member 217 are formed as separate components via an injection molding process and, subsequently, coupled to one another via a press-fit. Blocking member 217 includes a generally curvilinear base portion 219 that complements a corresponding recess 221 provided on a bottom portion of actuation sled 215. A detent 223 is provided on base portion 219 of actuation sled 215 and abuts a bottom surface 225 of central wedge 213 when actuation sled 215 is in an assembled configuration (FIGS. 18 and 20). Blocking member 217 is configured to contact a pair of distal protuberances 234a, 234b (FIGS. 21-22) of latches 232a, 232b when a loaded cartridge 212 is coupled to jaw member 208 (FIG. 30). In further embodiments, one or more latches may be used.

Referring now to FIGS. 21-22, latches 232a, 232b may be formed via any suitable process and include proximal ends 236a, 236b and distal ends 238a, 238b, respectively. Body portions 240a, 240b are provided at respective proximal ends 236a, 236b and are configured to contact flange 218b when knife 205 is in a retracted configuration (FIGS. 26-29 and 33-34). This contact between flange 218b and body portions 240a, 240b maintains latches 232a, 232b in an unlatched configuration.

Lateral extensions 242a, 242b of latches 232a, 232b include generally arcuate shoulder portions 243a, 243b that extend from proximal ends 236a, 236b and have respective arms 245a, 245b that abut sidewalls 241a, 241b of body portions 240a, 240b. Distal ends of arms 245a, 245b are received within corresponding apertures 247a, 247b (FIGS. 21-22) defined in lateral extensions 242a, 242b. Finger portions 257a, 257b extend in a generally orthogonal direction from shoulder portions 243a, 243b and proximally toward shelf 255 for engagement with corresponding holders 259a, 259b. Arms 245a, 245b are configured to engage springs 267 provided on leg members 253a, 253b to bias latches 232a, 232b in a downwardly direction (FIG. 28).

Continuing with reference to FIGS. 21-22, extending distally from body portions 240a, 240b are elongated members 248a, 248b from which trailing surfaces 260a, 260b extend in a generally orthogonal direction and culminate at protuberances 234a, 234b. Protuberances 234a, 234b are configured to selectively engage a recess 254 that is provided on an underside of jaw member 208, see FIG. 24 in combination with FIG. 31. Protuberances 234a, 234b and/or trailing surfaces 260a, 260b are configured to engage flange 218b of working end 201 of the drive member when protuberances 234a, 234b are engaged with recess 254 (FIG. 35). Extending distally from protuberances 234a, 234b are angled leading surfaces 249a, 249b that are configured to contact flange 218b of knife 205 when knife 205 is moved proximally back to the retracted configuration. Leading surfaces 249a, 249b allow flange 218b to slide past protuberances 234a, 234b to allow the working end 201 to be move proximally back to the retracted configuration (FIG. 32).

Operation of surgical stapling apparatuses 100, 200 that utilize reload 206 is described herein. Initially, jaw members 208, 210 may be in an open configuration to load cartridge 212 onto jaw member 208 (FIGS. 14 and 26-27). In the open configuration, working end 201 is in a fully retracted configuration and flange 218b contacts body portions 240a, 240b. Moreover, arm portion 245b is pressed against springs 267.

Thereafter, cartridge 212 may be inserted in jaw member 208. In the loaded configuration, blocking member 217 is positioned over recess 254 and in contact with protuberances 234a, 234b so as not to allow protuberances 234a, 234b to engage recess 254 prior to actuation sled 215 and/or the drive member being fired (FIGS. 28-29).

Subsequently, reload 206 including jaw members 208, 210 may be inserted through a portal, e.g., a trocar (or other suitable device), and positioned within a cavity of a patient adjacent tissue of interest. Tissue may be positioned between jaw members 208, 210 and jaw members 208, 210 may be approximated towards one another to grasp tissue for stapling thereof.

When the working end 201 is advanced to staple and sever tissue, flange 218b translates distally and moves out of engagement with body portions 240a, 240b. However, because blocking member 217 covers recess 254 and contacts with protuberance 234b, the working end 210 is free to continue to move distally and contact central cam wedge 213 of actuation sled 215, which, in turn, moves blocking member 217 out of contact with protuberances 234a, 234b. Accordingly, protuberances 234a, 234b are allowed to engage recess 254 (FIG. 31) as a result of bias of spring 267.

Subsequent to stapling and severing tissue, the working end 210 may be moved proximally and returned to its fully retracted configuration. Specifically, flange 218b of knife 205 contacts and slides past leading surfaces 249a, 249b so as to allow the working end 210 to be moved back to its fully retracted continuation (FIGS. 32-33). Flange 218b of knife 205 contacts body portions 240a, 240 and protuberances 234a, 234b are prevented from engaging recess 254. Accordingly, jaw members 208, 210 may be approximated towards one another for removal through the portal without interference from protuberances 234a, 234b (FIG. 34). That is, because the protuberances 234a, 234b are prevented from engaging recess 254, the likelihood of the protuberances 234a, 234b contacting the portal is reduced, if not eliminated. Latches 232a, 232b prevent forward movement of knife 205 until surgical stapling apparatuses 100, 200 are loaded with unused cartridge assembly.

In accordance with the instant disclosure, if flange 218b should come out of contact with body portions 240a, 240b, the biasing force provided springs 267 against arm portions 245a, 245b would cause protuberances 234a, 234b and/or trailing surfaces 260a, 260b to engage recess 254 and extend a predetermined distance therethrough to engage flange 218b and, thus, prevent knife 205 from traveling distally therepast (FIG. 35).

With reference to FIGS. 36-47, a reload 306 includes a locking mechanism according to another embodiment of the instant disclosure and is configured for use with surgical stapling apparatuses 100, 200 (FIGS. 1 and 2).

With initial reference to FIGS. 37 and 42, a lower portion 351b of pivot assembly 350 includes two spaced-apart upright extensions 359a, 359b that are provided adjacent a shelf 355 to form a holding area for a locking member 343. Specifically, extensions 359a, 359b are positioned distally with respect to shelf 355 and extend a predetermined distance above shelf 355 to engage locking member 343 to prevent locking member 343 from moving distally past extensions 359a, 359b. Extensions 359a, 359b are spaced apart a predetermined distance from one another so as to allow a working end 301 to advance through a firing sequence of the surgical stapling apparatus 100, 200.

Continuing with reference to FIG. 42, a leg member 353b extends from extension 359b and includes a generally flat top surface 365b defining a cavity 361b (see FIG. 45) that is configured to house an optional spring 367, e.g., a compression spring. A claw portion 369b extends in a generally upright orientation from top surface 365b and is configured to couple to a corresponding hinge member 344b of latch 332 (FIGS. 42 and 44) so as to allow hinge member 344b to pivot thereabout to facilitate sliding of locking member 343 along a notch 360 and/or a distal top surface 364b of drive beam members 303 (FIG. 43). A distal face 372b (FIG. 42) of leg member 353b defines a cavity 363b that is configured to house a spring 370, e.g., a compression spring, (FIGS. 44-45). Spring 370 includes a predetermined spring constant and is configured to contact a lateral extension 345b of latch 332 to bias latch 332 in a generally upright configuration.

Extension 359a is identical to extension 359b and includes all the aforementioned components described with respect to extension 359b. Accordingly, a detailed description of extension 359a is not provided.

Referring now to FIGS. 40-41, latch 332 is illustrated. Unlike latch 232, latch 332 is a single component having locking member 343 formed at a proximal end 341 and a bifurcated configuration including two (2) generally elongated members 342a, 342b extending distally therefrom. Members 342a, 342b are spaced apart a predetermined distance from one another to the working end 301 of the drive member to move therebetween during a firing sequence of surgical apparatuses 100, 200.

Hinge members 344a, 344b are provided at a medial portion of respective members 342a, 342b and include a generally arcuate configuration. Each of hinge members 344a, 344b extends a predetermined distance orthogonally from members 342a, 342b and curve outward therefrom to pivotably engage corresponding claw portions 369a, 369b to allow latch 332 to pivot as locking member 343 slides along drive beam members 303.

A pair of protuberances 334a, 334b are provided at a distal end of latch 332 and are configured to contact blocking member 317 (FIG. 45) when cartridge 312 is coupled to jaw member 308. Specifically, when protuberances 334a, 334b contact blocking member 317, latch 332 pivots about hinge members 344a, 344b which raises locking member 343 a predetermined distance and out of engagement with notch 360, as will be described in greater detail below.

Lateral extensions 345a, 345b are positioned proximally with respect to protuberances 334a, 334b and, when coupled to pivot assembly 350, adjacent coil sprigs 370 for contact therewith to urge protuberances 344a, 344b in a generally upward direction. Lateral extension 345b is configured to maintain coil spring 370 within cavity 363b as latch 332 pivots (FIGS. 44-45). Likewise, lateral extension 345a is configured to maintain coil spring 370 within the corresponding cavity (not explicitly shown) as latch 332 pivots.

FIG. 43 illustrates a distal end of drive beam members 303. Unlike drive beam members 103, drive beam members 303 collectively define notch 360. Specifically, notch 360 is provided adjacent to where a distal end of the drive beam members 303 couple to knife 305, as best seen in FIG. 43. Notch 360 may be formed during manufacture of drive beam members 303 by suitable methods including but not limited to etching, stamping, cutting, etc. Notch 360 includes a generally upright proximal wall 361 that extends from a generally flat medial portion 362. Wall 361 extends upwardly to meet with a proximal top surface 364a of drive beam members 303 and is configured to selectively engage locking bar 343 of a latch 332 to lock-out knife 305 so as to prevent misfiring of knife 305, as described in greater detail below. A ramp portion 363 extends distally from medial portion 362 and is provided towards a distal end of notch 360. Ramp portion 363 may extend at any suitable angle distally from medial portion 362 and is configured to slidably engage locking bar 343 when knife 305 is translated proximally and distally. Ramp portion 363 extends distally to meet a distal top surface 364b of drive beam members 303. Distal top surface 364b is configured to allow locking bar 343 to slide thereon when knife 305 is moved to a retracted configuration.

Operation of surgical stapling apparatuses 100, 200 that utilize reload 306 is described herein. Initially, jaw members 308, 310 may be in an open configuration to load cartridge 312 onto jaw member 308 (FIG. 44). In accordance with the embodiment illustrated in FIGS. 36-47, when cartridge 312 is not coupled to jaw member 308 the working end 301 of the drive member is locked out. Specifically, coil springs 370 contact lateral extensions 345a, 345b (in FIG. 44, only coil spring 370 is illustrated contacting extension 345b) to urge protuberances 343a, 343b in the generally upwardly direction, and locking member 343 in the generally downwardly direction into notch 360 and into contact with proximal wall 361. This contact between proximal wall 361 and locking member 343 maintains the working end 301 in a locked-out configuration.

Thereafter, cartridge 312 may be loaded onto jaw member 308. In the loaded configuration, blocking member 317 is positioned to contact with protuberances 334a, 334b. This contact between protuberances 334a, 334b and blocking member 317 forces protuberances 334a, 334b in a generally downwardly direction and causes latch 332 to pivot about pivot member 344a, 344b, which, in turn, causes locking member 343 to pivot in a generally upwardly direction and out of contact with proximal wall 361, see FIG. 45; with locking member 343 in this configuration, knife 305 may be fired.

When working end 301 is advanced to staple and sever tissue, blocking member 317 moves distally with actuation sled 315 and out of contact with protuberances 334a, 334b (FIG. 46). Accordingly, protuberances 334a, 334b as a result of bias of spring 370 are once again forced in a generally upwardly direction and locking member 343 in the generally downwardly direction.

Subsequent to stapling and severing tissue, the working end 301 may be moved proximally and returned to its fully retracted configuration. As the working end 301 is being moved proximally, locking member 343 slides a predetermined distance along proximal top surface 364a until such time locking member 343 is forced downwardly into notch 360 and into contact with proximal wall 361. With locking member 343 engaged with notch 360, knife 305 is locked out and prevented from misfiring.

With reference to FIGS. 48-59, a reload 406 includes a locking mechanism according to an embodiment of the instant disclosure and is configured for use with surgical stapling apparatuses 100, 200 is illustrated. Loading unit 406 can generally be configured as described above.

Beginning with reference to FIGS. 48-51, reload 406 includes a cartridge 412 that is similar to the previously described cartridge assemblies, e.g., cartridge 112. Unlike cartridge 112, however, one or more recessed platform areas 427a, 427b are provided adjacent to a proximal end of tissue contacting surface 421 of cartridge 412, as best seen in FIG. 51.

An aperture 420 is defined through platform area 427a and is configured to receive a post 433 of an actuator 432 (FIG. 51). Aperture 420 is configured to allow rotation of post 433 and a head portion 434 of actuator 432 when head portion 434 is contacted by a top flange 418b disposed on knife 405 (FIGS. 48-49). In a pre-fired configuration (e.g., prior to top flange 418b contacting head portion 434), head portion 434 rests on platform area 427a (FIG. 56). In a post-fired configuration (e.g., subsequent to top flange 418b contacting head portion 434), head portion 434 is raised a predetermined distance above platform area 427a (FIG. 58).

A pair of apertures 425a, 425b of suitable configuration are defined through a bottom interior wall 422 of cartridge housing 423 and are configured to receive a corresponding rivet 424a, 424b therein (FIG. 51). Aperture 425a is in vertical registration with aperture 420 to align post 433 with an interlock 450 (see FIGS. 51 and 56).

With reference to FIGS. 52-53, actuator 432 is illustrated. Actuator 432 is rotatable within aperture 420 from an initial configuration wherein head portion 434 rests on platform 427a and post 433 is engaged with interlock 450 (FIG. 56) to a final configuration wherein head portion 434 is raised above platform 427a and post 433 is disengaged from interlock 450 (FIG. 58). When post 433 is engaged with interlock 450, working end 401 is free to move distally (FIGS. 50 and 56). Conversely, when post 433 is disengaged from interlock 450, the working end 401 is locked out and unable to move distally (FIGS. 58 and 59).

Continuing with reference to FIGS. 52-53, post 433 extends from head portion 434 and includes a generally elongated, cylindrical configuration. A notch 436 is provided adjacent a bottom portion of post 433 and is defined by a generally hemispherical top surface 437 that is defined by a semi-circular peripheral edge and an interior linear edge 439. Edge 439 meets a wall 447 of suitable configuration that extends in a generally orthogonal direction from top surface 437 to meet an interior linear edge 443 that meets with a semi-circular peripheral edge 445. Linear edge 443 and peripheral edge 445 define a generally hemispherical bottom surface 449. A pair of beveled side edges 441a, 441b are provided on wall 447 and extend between bottom and top surfaces 449 and 437, respectively, to facilitate rotation of post 433 about interlock 450.

Head portion 434 includes top and bottom surfaces 451a, 451b that are joined by a sidewall 455 extending in a curvilinear manner around top and bottom surfaces 451a, 451b to form a generally cone-like configuration (FIGS. 52-53). A tip 451 of head portion 434 is configured to extend at least partially within a knife channel 414 when actuator 432 and a working end 401 are in the pre-fired configuration, see FIG. 55 for example. A protuberance 452 is provided on bottom surface 451b (FIG. 53) and is configured to contact an interior edge 453 (FIG. 55) that extends into knife channel 414. Protuberance 452 may include any suitable configuration. In the illustrated embodiment, for example, protuberance 452 includes a generally rounded configuration, e.g., a dot-like configuration. The rounded configuration of protuberance 452 facilitates raising head portion 434 above platform area 427a when protuberance 452 contacts an interior edge 453 disposed adjacent platform area 427a (FIG. 56). In addition, interior edge 453 may be beveled/slanted (FIGS. 56 and 58) or otherwise configured to facilitate raising head portion 434 above platform 427a when protuberance contacts interior edge 453.

A spring 470 (e.g., a coil spring or other suitable resilient member (FIGS. 50-51) is operably coupled to post 433 and is configured to bias actuator 432 in an upward direction as shown in FIG. 50. Specifically, spring 470 is configured to contact an interior wall 454 that lies beneath tissue contacting surface 421 of cartridge 412 (FIGS. 56 and 58). One or more suitable coupling methods and/or devices may be utilized to couple spring 470 to post 433. In the illustrated embodiment, for example, a lock washer 471 is utilized to couple spring 470 to post 433 (FIG. 51). Lock washer 471 is also utilized to rotatably secure post 433 of actuator 432 within aperture 420.

Referring to FIG. 54, interlock 450 is illustrated. Interlock 450 is rotatable within aperture 425a from an initial configuration wherein interlock 450 is engaged with sidewall 447 of post 433 (FIG. 56) to a final configuration wherein interlock 450 is disengaged from sidewall 447 (FIG. 58) and engaged with rivet 424b (FIG. 59). When interlock 450 is engaged with sidewall 447, interlock 450 is positioned outside of a translation path of the working end 401 and the working end 401 is free to move distally (FIGS. 50 and 56). Conversely, when interlock 450 is disengaged from sidewall 447, interlock 450 is positioned inside of translation path of the working end 401 and the working end 401 is locked out and unable to move distally (see FIGS. 58 and 59 for example).

Continuing with reference to FIG. 54, interlock 450 includes a stepped configuration having a proximal end 426 and a distal end 428. Proximal end 426 includes a generally rectangular configuration having a relatively flat top surface 429 that is configured to receive bottom surface 449 of post 433 thereon (FIG. 50). A bottom surface (not explicitly shown) of interlock 450 is configured to slide along bottom interior wall 422 as interlock 450 rotates. A sidewall 431c extends from the bottom surface and meets top surface 429 forming an edge 431d. Sidewall 431c forms a first step and is configured to contact rivet 424b when interlock is in the post-fired configuration (FIG. 59). A generally rectangular upright extension 430 of suitable configuration is provided on top surface 429 and includes interior sidewall portions 431a, 431b that form second step. Sidewall portion 431a extends in a straight manner a predetermined distance from a proximal edge of top surface 429. Sidewall portion 431b extends at an angle a predetermined distance from a distal end of sidewall portion 431a. In the pre-fired configuration, sidewall 447 of post 433 is flush with sidewall portion 431a (FIG. 50). As post 433 rotates during a firing sequence, the beveled configuration of side edges 441a, 441b in conjunction with the angle at which sidewall portion 431b extends facilitates the transition of post 433 and interlock 450 from their pre-fired configuration to their post-fired configuration.

A generally circumferential sidewall 460 (FIG. 54) is provided at distal end 428 and includes an aperture 435 of suitable configuration defined therethrough. Aperture 435 is configured to receive rivet 424a therein for coupling interlock 450 to cartridge housing 423. Rivet 424a is configured to allow rotation of interlock 450 from the pre-fired configuration to the post-fired configuration (see FIGS. 50-51 and 59).

A spring 467, e.g., a torsion spring 467, having a suitable spring coefficient operably couples via one or more suitable coupling methods and/or devices to the bottom surface of interlock 450. (FIG. 51). Spring 467 is configured to bias interlock 450 towards the post-fired configuration, as best seen in FIG. 59. In the post-fired configuration, sidewall 431c engages rivet 424b to prevent rotation of interlock 450 past a predetermined point and lockout the working end 401 (FIG. 59).

In use, actuator 432 is, initially, in the pre-fired configuration with tip 451 in the translation path of the working end 401 (FIGS. 50 and 55-56). Thereafter, the working end 401 may be advanced and flange 418a contacts head portion 434 of actuator 432, which, in turn, causes post 433 to rotate and protuberance 452 to ride up along interior edge 453 and onto platform 427a. As post 433 rotates, sidewall 447 rotates about sidewall 431a and begins to rise above extension 430 as a result of the upward bias of spring 470.

Once protuberance 452 is moved into position on platform 427a, sidewall 447 will be sufficiently raised so as to disengage sidewall 431a (FIGS. 57-79). As a result thereof, interlock 450 under the bias of spring 467 is forced to rotate until such time that sidewall 431c contacts rivet 424b (FIGS. 58-59).

The working end 401 may be moved back to its retracted, pre-fired configuration against the biasing force of spring 467. Specifically, a trailing surface (not explicitly shown, see trailing surface 118d in FIG. 3B for example) of the working end 401 contacts sidewall 431c so as to push interlock 450 proximally and out of engagement with rivet 424b until the working end 401 is moved therepast and to its retracted, pre-fired configuration. The trailing surface is desirably a cam surface or angled to facilitate this. Once the working end 401 is moved back to its retracted, pre-fired configuration, interlock 450 is once again forced forward by spring 467 and into contact with rivet 424b (FIG. 59). With interlock 450 in contact with rivet 424b, the working end 401 is locked out and prevented from distal translation.

With reference to FIGS. 60-76, a reload 506 includes a locking mechanism according to an embodiment of the instant disclosure and is configured for use with surgical stapling apparatuses 100, 200 is illustrated.

With reference initially to FIGS. 60-61, reload 506 includes a lockout assembly 530 that is configured to lock out a working end 501 to prevent misfiring thereof when a cartridge 512 is not coupled to jaw member 508 or when a spent cartridge 512 is coupled to jaw member 508. An actuator 532 is provided at a proximal end of cartridge 512 and is configured to selectively disengage lockout assembly 530 from a lock out configuration to allow advancement of the working end 501 of the drive member (FIGS. 62-66). The reload can generally be configured as discussed above.

Continuing with reference to FIGS. 62-65, an actuator 532 operably couples to actuation sled 515 and is positioned between wedge members 513b, 513c that are positioned to the right of a central support wedge 513a. Actuator 532 is translatable distally between wedge members 513a, 513b from an initial configuration (see FIGS. 60, 62-64 and 73-74) to a final configuration (see FIGS. 75-76). Actuator 532 is maintained in the initial configuration as a result of contact with a corresponding pusher 518 of plurality of double pushers 517b that are configured to eject corresponding fasteners 517a when contacted by wedge members 513b, 513c (see FIG. 65 in combination with FIG. 73 for example). In the illustrated embodiment corresponding pusher 518 is positioned first in the outer row of plurality of pushers 517 (see FIGS. 73 and 75 for example). Alternatively, a single, dedicated pusher (not shown) may be utilized to engage actuator 532; this single dedicated pusher may be configured to push a corresponding fastener, or may function to simply maintain actuator 532 in the initial configuration. Wedge member 513c is configured to contact pusher 518 and move pusher 518 in an upwardly direction to deploy corresponding one of the surgical fasteners 517a.

A resilient member 567 (or other suitable device, e.g. a spring) is configured to contact a proximal end 532a of actuator 532 to bias a distal end 532b thereof against pusher 517b (FIGS. 60, 63-65). Specifically, resilient member 567 is provided on a bottom portion or cover 561 of cartridge 512 (as best seen in FIG. 65). Spring 567 includes a generally elongated configuration and extends distally in a generally inwardly manner at an angle from cover 561 to bias actuator 532 distally into contact with pusher 518. Resilient member 567 may include any suitable spring constant or configuration or shape. In accordance with the instant disclosure, a suitable spring constant will be sufficient so as allow resilient member 567 to bias actuator 532 against pusher 518 and translate actuator 532 a predetermined distance past pusher 518, as will be described in greater detail below.

Actuator 532 may be formed from any suitable material including but not limited to metal, plastic, etc. In the illustrated embodiment, actuator 532 is formed from metal, e.g., sheet metal, and includes a generally elongated configuration having proximal and distal ends 532a, 532b, respectively (FIGS. 65 and 67).

Distal end 532b includes a leading edge 533 that is configured to engage a corresponding trailing edge 518a (FIGS. 65 and 75) of pusher 518. In embodiments, such as the illustrated embodiment, leading edge 533 includes a generally arcuate configuration (e.g., a groove) to facilitate contact with trailing edge 518a that includes a complementary arcuate configuration (e.g., a tongue) of leading edge 533. Alternatively, leading edge 533 and trailing edge 518a may be relatively flat, or may have some other shape.

In the final configuration, e.g., a post-fired configuration, leading edge 533 extends a predetermined distance past trailing edge 518a. The predetermined distance that leading edge 533 may extend past trailing edge 518a may range from about 0.050 inches to about 0.070 inches. In other words, actuator 532 has been moved distally by resilient member 567 away from locking lever 540.

A notch 535 is provided on actuator 532 and is defined by a back wall portion 535a that extends orthogonally from a top surface 535b (FIG. 67). Notch 535 is configured to engage a blocking member 536 extending downwardly from a top interior wall provided within cartridge 512 (FIGS. 73 and 75). Blocking member 536 is configured to contact back wall portion 535a to limit distal translation of actuator 532 during a firing sequence such that leading edge 533 extends past trailing edge 518a within the above specified ranges. Moreover, blocking member 536 and top surface 535b may serve to guide actuator 532 as actuator 532 is translated between wedge members 513b, 513c.

A generally elongated finger portion 531 of suitable configuration is provided at proximal end 532a and extends proximally therefrom to move lockout assembly 530 into a pre-fired configuration when cartridge 512 is coupled to jaw member 508, see FIGS. 64 and 67. In the illustrated embodiment, a distal end 531a of finger portion 531 extends inwardly from proximal end 532a to laterally offset the finger portion 531 from proximal end 532a. Alternatively, finger portion 531 may be provided on an interior sidewall 532c (FIG. 67) of actuator 532. Finger portion 531 is offset from proximal end 532a to align and couple with lockout assembly 530 when cartridge 512 is coupled to jaw member 508 (see FIGS. 63-64).

With reference to FIGS. 60, 62-64, 66 and 68 lockout assembly 530 is illustrated. As noted above, lockout assembly 530 is configured to lock out the working end 501 to prevent misfiring thereof when cartridge 512 is not coupled to jaw member 508 or when a spent cartridge 512 is coupled to jaw member 508. With this purpose in mind, lockout assembly 530 is operably positioned at a proximal end of jaw 508 and located distal of pivot assembly 550 (FIGS. 62-63). Lockout assembly 530 includes three main components, a locking lever 540 (FIG. 68), a mounting member 560 and a spring clip 570.

Continuing with reference to FIG. 68, locking lever 540 includes a base portion 540a of suitable configuration that is configured to seat within a recess 542 provided at a proximal end of jaw member 508, see FIGS. 64 and 66 for example. A bottom surface of base portion 540a is provided with a generally circumferential protuberance (not explicitly shown) that is configured to be received within a corresponding aperture 544a (as best seen in FIG. 66) that is provided within recess 542 and defined through a bottom wall portion of jaw member 508. In an assembled configuration, the protuberance is configured to allow rotation of locking lever 540 within recess 542 when locking lever 540 is contacted by finger portion 531, see FIGS. 62-64.

A generally arcuate cutout 540b is provided on base portion 540a and includes a tip 540c configured to contact a corresponding sidewall 542a that helps define recess 542 (see FIGS. 64 and 67). Moreover, a boss 540d of suitable configuration extends in a generally orthogonal direction from base portion 540a and is configured to contact finger portion 531. Specifically, when cartridge 512 is coupled to jaw member 508, finger portion 531 of actuator 532 contacts boss 540d and rotates locking lever 540 until boss 540d contacts a trailing edge 564 of mounting member 560 and tip 540c contacts sidewall 542a of recess 542 (FIG. 64). Moreover, tip 540c is configured to contact and slide against a bottom portion 503a of drive beam members 503 (FIG. 73) after finger portion 531 of actuator 532 is disengaged from boss 540d, as will be described in more detail below.

A protrusion 540e is provided on base portion 540a and is supported by a post 540f that extends from base portion 540a (FIGS. 68-70). Protrusion 540e includes a generally circumferential configuration and is configured to rotatably engage a corresponding opening 562 provided on mounting member 560 for securing locking lever 540 within recess 542. Post 540f includes a generally oblong configuration and is configured to be received between spaced-apart leg portions 571a, 571b of spring clip 570 (as best seen in FIGS. 69-70A) so as to allow rotation thereof including locking lever 540 within aperture 544a. Specifically, leg portions 571a, 571b are configured to bias post 540f and, thus, locking lever 540 into a locked out configuration. More specifically, when cartridge 512 is coupled to jaw member 508, finger portion 531 contacts boss 540d and urges boss 540d proximally, which, in turn, partially rotates post 540f into contact with and against the biasing force provided by leg portions 571a, 571b (FIG. 70B). When finger portion 531 moves out of contact with boss 540d, tip 540c is urged into contact with and slides against bottom portion 503a of drive beam members 503 until such time that the working end 501 is moved proximally past tip 540c and back to the retracted configuration. Once the working end 501 is moved to the retracted configuration, tip 540c of locking member 540 is moved back to the locked out configuration. The biasing force provided by leg portions 571a, 571b on post 540f prevents the working end 501 from moving past tip portion 540c. That is, the biasing force provided by leg portions 571a, 571b on post 540f is greater than the force utilized to fire and/or translate the working end 501 distally and, therefore, leg portions 571a, 571b do not move apart from one another as a result of contact between the working end 501 and tip portion 540c as the working end 501 is moved distally (FIG. 70a).

Leg portions 571a, 571b meet at a generally arcuate proximal end 572 of spring clip 570 (FIGS. 68-70). The arcuate configuration of proximal end 572 provides a suitable spring constant and is configured to allow leg portions 571a, 571b flex or move a predetermined distance away from one another when post 540f contacts leg portions 571a, 571b. An aperture 576 of suitable configuration is provided adjacent proximal end 572 and is configured to receive therethrough a corresponding protrusion 563 that is provided on a bottom surface of mounting member 560 (FIG. 68).

Mounting member 560 includes a generally elongated configuration having opening 562 at a distal end thereof and protrusion 563 at a proximal end thereof to mount locking lever 540 to jaw member 508 (FIG. 68). Specifically, protrusion 540e is positioned within aperture 562 and protrusion 563 is positioned through aperture 576 and through an aperture 544b provided within recess 542 adjacent aperture 544a (see FIG. 66).

In use, locking lever 540 is, initially, in a locked out configuration (FIGS. 62-63) with tip 540c positioned across the knife channel 514 to prevent distal translation of the working end 501. Thereafter, cartridge 512 may be coupled to jaw member 508. In doing so, finger portion 531 contacts and pushes boss 540d proximally to partially rotate locking lever 540 within recess 542. Locking lever 540 rotates within recess 542 until boss 540d contacts trailing edge 564 and tip portion 540c contacts sidewall 542c (FIGS. 73-74). At this time, post 540f moves leg portions 571a, 571b away from one another and is biased by the force provided therefrom (FIG. 70B). Concomitantly, spring 567 biases actuator 532 distally against pusher 518 (see FIG. 63 in combination with FIG. 74).

With locking lever 540 and actuator 532 in the pre-fired configuration, the working end 501 including actuation sled 515 may be fired to staple and, subsequently, sever the stapled tissue. When fired, the working end 501 including sled 515 are moved distally and wedge 513c contacts pusher 518 so as to allow actuator 532 to move a predetermined distance distally in a manner as described hereinabove. Distal translation of actuator 532 allows locking lever 540 to move back to the locked-out configuration (FIGS. 75-76). Specifically, when the working end 501 is moved proximally past locking lever 540 to the retracted configuration, locking lever 540 against the bias of spring clip 570 is moved back to the locked out configuration. Once in the retracted configuration, the working end 501 is locked out from translating distally past tip portion 540c as a result of the biasing force provided on post 540f by leg portions 571a, 571b.

With reference to FIGS. 77-92, a reload 606 includes a locking mechanism according to an embodiment of the instant disclosure and is configured for use with surgical stapling apparatuses 100, 200 is illustrated.

With reference initially to FIGS. 77-78, reload 606 includes a lockout assembly 630 and an actuator 632 that collectively are configured to lock out the working end 601 to prevent misfiring thereof subsequent to cartridge 612 being coupled to jaw member 608. Actuator 632 is provided at a proximal end of cartridge 612 and is configured to selectively engage lockout assembly 630 that is provided at a proximal end of jaw member 508 (see FIGS. 78-81 for example).

A notch 603a of suitable configuration is defined at a distal end of drive beam members 603 adjacent the working end 601 (FIG. 78). Notch 603a includes a proximal wall 603b that is configured to contact at least a portion of a locking lever 640 of lockout assembly 630 (see FIG. 92 for example) when locking lever 640 is in the locked out configuration.

Continuing with reference to FIGS. 78-81 and 85, actuator 632 operably couples to cartridge 612 and is configured to selectively engage locking lever 640. Actuator 632 includes a generally elongated configuration having proximal and distal ends 632a, 632b, respectively. Distal end 632b includes a protuberance 634 that projects inwardly and is configured to contact a cam feature 616 that is disposed on actuation sled 615 adjacent a top surface of a central cam wedge 613 (FIG. 85). A tab 636 of suitable configuration is provided on a bottom surface 634c of actuator 632 and is configured to movably seat within a corresponding aperture 622a having a complementary configuration provided at a proximal end of cartridge 612 (see FIG. 80 in combination with FIG. 85). Specifically, tab 636 is configured to move in a generally sideways or lateral direction when protuberance 634 is contacted by cam feature 616 as actuation sled 615 is moved distally.

A support structure 638 is provided on bottom surface 632c adjacent proximal end 632a and includes a beam portion 638a and post portion 638b (FIG. 84). Beam portion 638a is configured to be received within a recess 642 that is provided at a proximal end of cartridge 612 (FIG. 84). Beam portion 638a includes a generally elongated configuration and includes a detent 637 at a distal end thereof (FIG. 84). Detent 637 is positioned proximally with respect to tab 636 and is received within a corresponding aperture 632b that is provided at a proximal end of cartridge 612 adjacent aperture 622b (FIGS. 78 and 85). Detent 637 is configured to couple actuator 632 to cartridge 612 so as to allow tab 636 to move within aperture 622a in a manner as described above. Specifically, contact between cam member 616 and protuberance 634 causes actuator 632 to pivot about detent 637, which, in turn, causes tab 636 to move sideways within aperture 622a. Post portion 638b extends in a generally orthogonal direction from bottom surface 632c and is configured to contact and rotate locking member 640 into an unlocked configuration when cartridge 612 is coupled to jaw member 608. Moreover, as actuator 632 pivots about detent 637, post portion 638b moves out of contact with locking lever 640 and allows locking lever 640 to return to the locked out configuration (FIGS. 87-88 and 91-92).

Lockout assembly 632 includes locking lever 640, a spring 670 and a mounting member, e.g., a rivet 660, see FIG. 81 for example. Spring 670 may be any suitable type of spring including coil, torsion, etc. In the illustrated embodiment, spring 670 is in the form of a torsion spring and includes two leg members 671a, 671b that are wound and joined to one another to form a central aperture 670a (FIG. 81) of suitable configuration. Central aperture 670a is aligned with an aperture 641 defined through locking member 640 and is configured to receive rivet 660 therethrough to couple locking lever 640 to jaw member 608. Leg portions 671a, 671b are configured to bias locking lever 640 in the locked out configuration. Specifically, one or both of leg portions 671a, 671b (e.g., leg portions 671a) is configured to contact a pivot member 643 that is provided on locking lever 640 to bias locking lever 640 in the locked out configuration (see FIGS. 78, 88, 90 and 92). A top portion 660b of rivet 660 is configured to couple spring 670 and locking lever 640 to one another (FIG. 78).

With reference to FIGS. 82-83, locking lever 640 is illustrated. Locking lever 640 includes a generally rectangular configuration having proximal and distal ends 640a, 640b, respectively. Pivot member 643 extends in a generally orthogonal direction from a top surface 640c of locking member 640 and includes proximal and distal sidewalls 640d, 640e that are joined by a medial sidewall portion 640f. Proximal sidewall 640d includes a generally arcuate configuration and is positioned adjacent top portion 660b of rivet 660 to facilitate rotation of locking lever 640 about rivet 660. Distal sidewall 640e is angled to facilitate contact with post portion 638b of actuator 632 when cartridge 612 is being coupled to jaw member 608.

Continuing with reference to FIGS. 82-83, top surface 640c extends a predetermined distance from a bottom surface (not explicitly shown) of locking lever 640 so as to allow post portion 638b of actuator 632 to slide along top surface 640c and contact distal wall 640e when cartridge 612 is being coupled to jaw member 608 (FIG. 78). Proximal end 640a includes a proximal wall 640k having a relatively flat configuration and a rounded inside corner portion 640g that is configured to slide along a lower portion of drive beam members 603 as the working end 601 is translated distally and/or proximally (FIG. 90). Proximal wall 640k is configured to selectively engage notch 603a. Corner portion 640g meets an inner sidewall 640i having a proximal and distal sidewall portions 640j, 640h, respectively. Proximal sidewall portion 640j includes a relatively flat configuration and extends distally to meet distal sidewall portion 640h which includes a bowed or concave configuration. This bowed configuration of distal sidewall portion 640h facilitates proximal translation of the working end 601 past locking lever 640 as the working end 601 is moved back to the retracted configuration.

In use, locking lever 640 is, initially, biased inwardly to the locked out configuration to prevent distal translation of the working end 601 (FIG. 87). Specifically, proximal wall 640k and inner sidewall 640i are positioned adjacent the working end 601 and distal with respect to notch 603a so as to be able to engage notch 603a if the working end 601 is moved a predetermined distance distally (see FIGS. 91-92). That is, locking lever 640 is biased inwardly against the bottom portion of drive beam members 603 so that proximal wall 640k and/or inner sidewall 640i can engage notch 603a as the working end 601 is moved distally.

Thereafter, cartridge 612 may be coupled to jaw member 608. In doing so, post 638b contacts distal sidewall 640e and pushes pivot member 643 proximally to partially rotate locking lever 640 out of the locked out configuration and away from notch 303a (FIGS. 79-80 and 88).

With locking lever 640 in the pre-fired configuration, the working end 601 including actuation sled 615 may be fired to staple and, subsequently, sever the stapled tissue. When fired, the working end 601 including actuation sled 615 move a predetermined distance distally such that cam feature 616 contacts protuberance 634 so as to pivot actuator 632 about detent 637, which, in turn, causes tab 636 to move inwardly within aperture 622a (FIGS. 89-90). As a result of thereof, post 638b slides across distal sidewall 640e and moves out of contact therewith, which, in turn, causes locking lever 640 to pivot inwardly about rivet 660 and against the bottom portion of drive beam members 603 into the locked out configuration. In accordance with the instant disclosure, at the time cam feature 616 contacts protuberance 634, notch 603a will be positioned distally of inner sidewall 640i so as to allow complete translation of the working end 601 through knife channel 614 (see FIG. 90).

With locking lever 640 in the locked out configuration, the working end 601 may be moved proximally back to the retracted configuration, wherein notch 603a is again positioned proximally with respect to locking lever 640. Once in the retracted configuration, the working end 601 is locked out from translating distally past locking lever 640 while the spent cartridge is attached to jaw member 608.

With reference to FIGS. 93-104, a reload 706 (for illustrative purposes being shown without a shaft coupled thereto) includes a locking mechanism according to an embodiment of the instant disclosure and is configured for use with surgical stapling apparatuses 100, 200 is illustrated.

With reference initially to FIGS. 93-95, a jaw member 710 includes an anvil 711 and is coupled to a jaw member 708 configured to selectively couple to a cartridge 712. An actuation sled 715 is provided in cartridge 712 and includes a central support wedge 713. When cartridge 712 is coupled to jaw member 708, and jaw members 708, 710 are in an approximated configuration, central support wedge 713 is configured to contact a pawl 732 of a lock out assembly 730 that is operably coupled to jaw member 710 (see FIG. 100).

Referring to FIG. 96, jaw member 710 includes a proximal end 710a that is configured to cover a proximal end 711a of anvil 710. In an assembled configuration, proximal end 710a extends a predetermined distance from proximal end 711a of anvil so as to allow pawl 732 to pivot through a knife channel 714 defined through anvil 711. Knife channel 714 extends along a length of anvil 711 and is configured to receive a top flange 718a of knife 705 so as to allow proximal and distal translation of the working end 701. Similarly, a bottom flange 718b of knife 705 is provided through a knife channel (not explicitly shown) that extends through a bottom surface of jaw member 708 (see knife channel 614 above for example).

With reference to FIG. 97, lock out assembly 730 is configured to lock out the working end 701 to prevent misfiring thereof prior to coupling cartridge 712 to jaw member 708, and subsequent to coupling cartridge 712 and firing knife 708, i.e., when cartridge 712 is spent. Lock out assembly 730 includes a bracket 731 of suitable configuration that operably couples to an inner surface (not explicitly shown) of jaw member 710. In the illustrated embodiment, a pivot pin 733, rivet or the like may be utilized to mount bracket 731 to the inner surface of jaw member 710. Alternatively, bracket may be coupled to the inner surface of jaw member 710 via welding (e.g., laser beam or electron beam welding), ultrasonic welding, brazing, soldering or other suitable device or method. Bracket 731 includes a bifurcated configuration having a closed proximal end 731a and an open distal end 731b that is defined by two elongated fingers 734a, 734b that are spaced apart a predetermined distance from one another. Specifically, fingers 734a, 734b are spaced apart from one another a distance that allows pawl 732 to pivot unobstructed between fingers 734a, 734b. In embodiments, distal end 731b may be closed.

With continued reference to FIG. 97, pivot pin 733 extends through a pair of apertures 736 that are defined through fingers 734a, 734, and is coupled to the inner surface of jaw member 710 via one or more suitable coupling methods, e.g., laser beam or electron beam welding. Pivot pin 733 is also positioned through an aperture 738 of suitable configuration that is defined through pawl 732. Pivot pin 733 is operable to allow pawl 732 to pivot thereabout when pawl 732 is contacted by central wedge 713. Pivot pin 733 is positioned distally with respect to resilient member 760 that is provided on bracket 731.

Resilient member 760 may be any suitable resilient member. In the illustrated embodiment, for example, resilient member 760 is formed from a relatively resilient strip of plastic material that has been bent to form a generally “U” shape (FIG. 97). Resilient member 760 is operable to pivot pawl 732 about pivot pin 733. Accordingly, resilient member 760 includes a base portion 761 that couples via one or more suitable coupling methods, e.g., laser beam or electron beam welding, to a bottom surface 731c that extends from proximal end 731a and along fingers 734a, 734b. Base portion 761 meets an arcuate medial portion 762 that serves as a living hinge that meets a flexure portion 763 that couples to pawl 732. Flexure portion 763 provides an upwards biasing force that urges pawl 732 through knife channel 714 when cartridge 712 is not coupled to jaw member 708 (see FIGS. 94-95) and after the working end 701 has been fired (FIGS. 100-101) and moved back to the retracted configuration (see FIG. 102). Moreover, flexure portion 763 flexes about medial portion 762 when pawl 732 is contacted by central wedge 713 (FIGS. 100-101). Coupling base portion 761 along the bottom surface 731c prevents base portion 761 from moving as pawl 732 pivots about pivot pin 733 and flexure portion 763 flexes about medial portion 762.

Continuing with reference to FIG. 97, pawl 732 may be formed from any suitable material including but not limited to metal, plastic, ceramic, etc. In the illustrated embodiment, pawl 732 is formed from metal. Pawl 732 includes a generally elongated configuration having proximal and distal portions 732a, 732b with a generally arcuate recess 732c therebetween. Proximal portion 732a includes a generally rectangular configuration and distal portion 732b extends distally from arcuate recess 732c so as to form a distal tip 732d. A bottom surface 732e of pawl 732 is configured to contact central wedge 713 when cartridge 712 is coupled to jaw member 708.

In use, pawl 732 is, initially, biased upwardly via flexure portion 762 to the locked out configuration to prevent distal translation of the working end 701 (FIGS. 94-95). Thereafter, cartridge 712 may be coupled to jaw member 708. In doing so, central wedge 713 contacts bottom surface 732e of pawl 732 which causes pawl 732 to pivot about pivot pin 733, which, in turn, causes distal tip 732d, against the biasing force of flexure portion 762, to move from within knife channel 714 (FIGS. 98-100).

With pawl 732 in the pre-fired configuration, the working end 701 including actuation sled 715 may be fired to staple and, subsequently, sever the stapled tissue. When fired, the working end 701 including actuation sled 715 move distally and, thus, central wedge 713 moves out of contact with bottom surface 732e (FIGS. 89-90). As a result of thereof, pawl 732 is biased upwardly via flexure portion 762 to the lock out configuration.

With pawl 732 in the locked out configuration, the working end 701 may be moved proximally back to the retracted configuration. As the working end 701 is being moved proximally to the retracted configuration, top flange 718a contacts distal end 732b then distal tip 732d, which, in turn, causes pawl 732 to pivot downwardly about pivot pin 733. Once in the retracted configuration, the working end 701 is locked out from translating distally past pawl 732 while the spent cartridge is still attached to jaw member 708 (see FIG. 102).

With reference to FIGS. 103-104, a pawl 770 and resilient member 780 may be utilized instead of pawl 732 and resilient member 760. In this embodiment, pivot pin 733 is not utilized. Rather, a generally hemispherical protrusion 771 may extend from either side or both sides of pawl 770. For illustrative purposes, one protrusion 771 is shown extending from a left sidewall 770a of pawl 770.

A relatively flat bottom surface 771a is provided on protrusion 771 and is coupled to a top surface 781a of resilient member 780, e.g., a leaf spring, adjacent a proximal portion 781b thereof. Top surface 781a at a distal portion 781c of resilient member 780 is coupled to an inner top surface of jaw member 710 and a medial portion 781d is configured to flex when central wedge 713 contacts pawl 770. Pawl 770 is functionally the same as pawl 732; therefore, a detailed description of operation of pawl 770 is not described herein.

With reference to FIGS. 105-127, a reload 806 includes a locking mechanism according to an embodiment of the instant disclosure and is configured for use with surgical stapling apparatuses 100, 200 is illustrated.

With reference initially to FIGS. 105-113, reload 806 includes a lockout assembly 830 which is similar to lockout assembly 530. Specifically, lockout assembly 830 is operably positioned at a proximal end of jaw member 808 and located distal of the pivot assembly (FIGS. 105-108); only a portion of the pivot assembly coupled to jaw member 808 is illustrated in the FIGS. As with lockout assembly 530, lockout assembly 830 is configured to lock out knife 808 (FIG. 106) when a cartridge 812 is not coupled to jaw member 808 or when a spent cartridge 812 is coupled to jaw member 808. To this end, lockout assembly 830 includes three main components, a locking lever 840, a mounting member 860 and a spring clip 870 (FIGS. 109-110).

Continuing with reference to FIGS. 109-110, locking lever 840 includes a base portion 840a of suitable configuration that is configured to seat within a recess 842 provided at a proximal end of jaw member 808. A bottom surface of base portion 840a is provided with a generally circumferential protuberance 840f that is configured to be received within a corresponding aperture 844a that is provided within recess 842 and defined through a bottom wall portion of jaw member 808. In an assembled configuration, protuberance 840f is configured to allow rotation of locking lever 840 within recess 842; in this embodiment, however, rotation is a result of contact with an inwardly extending detent 831 that is provided on an actuator 832 (see FIG. 119).

A generally arcuate cutout 840b is provided on base portion 840a and includes a tip 840c configured to contact a corresponding sidewall 842a that helps define recess 842 (see FIG. 109). Unlike locking lever 540, however, which includes a boss 540d, a latch 840d (FIGS. 109-110) of suitable configuration is provided on a protrusion 840e (which extends from base portion 840a) and is configured to contact detent 831. Specifically, when cartridge 812 is coupled to jaw member 808, detent 831 of actuator 832 contacts latch 840d and rotates locking lever 840 until latch 840d contacts a trailing edge 864 of mounting member 860 and tip 840c contacts sidewall 842a of recess 842 (see FIGS. 123-125).

Protrusion 840e is provided on base portion 840a and is supported by a post 840f that extends from base portion 840a (FIGS. 109-112). Protrusion 840e includes a generally circumferential configuration and is configured to rotatably engage a corresponding opening 862 provided on mounting member 860 for securing locking lever 840 within recess 842. Post 840f includes a generally oblong configuration and is configured to be received between spaced-apart leg portions 871a, 871b of spring clip 870 (as best seen in FIGS. 111-112) so as to allow rotation thereof including locking lever 840 within aperture 844a. Specifically, leg portions 871a, 871b are configured to bias post 840f and, thus, locking lever 840 into a locked out configuration. More specifically, when cartridge 812 is coupled to jaw member 808, detent 831 contacts latch 840d and urges latch 840d proximally, which, in turn, partially rotates post 840f into contact with and against the biasing force provided by leg portions 871a, 871b (FIG. 111). In the locked out configuration, the biasing force provided by leg portions 871a, 871b on post 840f prevents the working end 801 from moving past tip portion 840c. That is, the biasing force provided by leg portions 871a, 871b on post 840f is greater than the force utilized to fire and/or translate the working end 801 distally and, therefore, leg portions 871a, 871b do not move apart from one another as a result of contact between the working end 801 and tip portion 840c as the working end 801 is moved distally.

Leg portions 871a, 871b meet at a generally arcuate proximal end 872 of spring clip 870 (FIG. 109-112). The arcuate configuration of proximal end 872 provides a suitable spring constant and is configured to allow leg portions 871a, 871b flex or move a predetermined distance away from one another when post 840f contacts leg portions 871a, 871b. An aperture 876 (FIGS. 109-110) of suitable configuration is provided adjacent proximal end 872 and is configured to receive therethrough a corresponding protrusion 863 that is provided on a bottom surface of mounting member 860 (FIGS. 109-110).

Mounting member 860 includes a generally elongated configuration having opening 862 at a distal end thereof and protrusion 863 at a proximal end thereof to mount locking lever 840 to jaw member 808 (FIG. 109). Specifically, protrusion 840e is positioned within aperture 862 and protrusion 863 is positioned through aperture 876 and through an aperture 844b provided within recess 842 adjacent aperture 844a (see FIG. 109). A slit 865 having a complementary configuration to latch 840d is provided on mounting member 860 adjacent aperture 862 and is configured to accommodate reception of latch 840d therethrough; alignment of latch 840d with slit 865 enables protrusion 840e to be positioned through aperture 862.

Turning now to FIGS. 114-123, actuator 832 is provided at a proximal end of cartridge 812 (FIG. 114) and is configured to selectively disengage lockout assembly 830 from the locked out configuration to allow firing of the working end 801 (FIG. 123). Actuator 832 may be formed from any suitable material including but not limited to metal, plastic, etc. In the illustrated embodiment, actuator 832 is formed from a relatively rigid plastic material and includes a generally elongated configuration having proximal and distal ends 832a, 832b, respectively (FIG. 115).

Referring to FIGS. 116-119, actuator 832 is positioned between a central support wedge member 813a and side wedge member 813b that is positioned to the right of central support wedge member 813a. Actuator 832 is configured to translate a predetermined distance distally within cartridge 812 as actuation sled 815 is moved through cartridge 812 to eject the plurality of fasteners (not shown). In accordance therewith, actuator 832 releasably couples to actuation sled 815 via one or more suitable coupling method. In the illustrated embodiment, for example, an indent/detent configuration is utilized to releasably couple actuator 832 and actuation sled 815 to one another. Specifically, an indent 833a of suitable configuration is provided on a bottom surface 832c of actuator 832 and is configured to releasably couple to a corresponding detent 833b that is provided in between central support wedge 813a and wedge 813b (see FIGS. 119-121).

Actuator 832 includes a pair of generally elongated sidewalls 834a, 834b that extend a predetermined length along actuator 832 (FIG. 119). Sidewalls 834a, 834b are spaced apart from one another to receive therein a corresponding stop member 835 of suitable configuration that is provided an interior sidewall 836 within cartridge 812, see FIG. 115 in combination with 117. Interior sidewall 836 including stop member 835 are positioned within cartridge 812 so as to allow distal translation of actuation sled 815 through cartridge 812. Each of sidewalls 834a, 834b includes a respective groove 837a, 837b that is configured to engage corresponding top and bottom projections 838a, 838b of stop member 835 to form a dovetail joint, as best seen in FIG. 117. In accordance with the instant disclosure, when actuation sled 815 translates a predetermined distance past interior sidewall 836, distal end 832b of actuator 832 contacts interior sidewall 836 and grooves 837a, 837b engage top and bottom projections 838a, 838b to prevent distal translation of actuator 832 past interior sidewall 836. Moreover, with grooves 837a, 837b engaged with top and bottom projections 838a, 838b, actuator 832 is secured and prevented from moving within cartridge 812. It should be noted that detent 833b is configured to disengage from indent 833a after such time that actuator 832 is secured to stop member 835.

Detent 831 is provided at proximal end 832a and extends a predetermined distance inwardly therefrom to move latch 840d of lockout assembly 830 into a pre-fired configuration when cartridge 812 is coupled to jaw member 808, see FIGS. 122-123. Detent 831 may be angled (as in the instant embodiment) or otherwise configured to facilitate contact with latch 840d (FIG. 123). When detent 831 moves out of contact with latch 840d, tip 840c is urged into contact with and slides against a bottom portion (not explicitly shown) of drive beam members 803 (FIGS. 124-125 and 127) until such time that the working end 801 is moved proximally past tip 840c and back to the retracted configuration (as best seen in FIG. 127). Once the working end 801 is moved to the retracted configuration, tip 840c of locking member 840 is moved back to the locked out configuration. The biasing force provided by leg portions 871a, 871b on post 840f prevents the working end 801 from moving past tip portion 840c. That is, the biasing force provided by leg portions 871a, 871b on post 840f is greater than the force utilized to fire and/or translate the working end 801 distally and, therefore, leg portions 871a, 871b do not move apart from one another as a result of contact between the working end 801 and tip portion 840c as the working end 801 is moved distally.

In use, locking lever 840 is, initially, in a locked out configuration with tip 840c positioned across the knife channel 814 to prevent distal translation of the working end 501 (FIGS. 106-108 and 112). Thereafter, cartridge 812 may be coupled to jaw member 808. In doing so, detent 831 contacts and latch 840d proximally to partially rotate locking lever 840 within recess 842. Locking lever 840 rotates within recess 842 until latch 840d contacts trailing edge 864 and tip portion 840c contacts sidewall 842a (FIGS. 111 and 122-123). At this time, post 840f moves leg portions 871a, 871b away from one another and is biased by the force provided therefrom (FIG. 111 for example).

With locking lever 840 and actuator 832 in the pre-fired configuration, the working end 801 including actuation sled 815 may be fired to staple and, subsequently, sever the stapled tissue. When fired, the working end 801 including actuation sled 815 and actuator 832 coupled thereto move distally, which results in actuator 832 contacting stop member 835 in a manner as described hereinabove. Distal translation of actuator 832 causes detent 831 to disengage from latch 840d and allows locking lever 840 to move back to the locked-out configuration (FIGS. 126-127). Specifically, when the working end 801 is moved proximally past locking lever 840 to the retracted configuration, locking lever 840 against the bias of spring clip 870 is moved back to the locked out configuration. Once in the retracted configuration, the working end 801 is locked out from translating distally past tip portion 840c as a result of the biasing force provided on post 840f by leg portions 871a, 871b.

With reference to FIGS. 128-133, a reload 1006 includes a locking mechanism according to an embodiment of the instant disclosure and is configured for use with surgical stapling apparatuses 100, 200 is illustrated.

FIG. 130 illustrates a cartridge 1012 installed on a jaw member 1008 with the working end 1001 in a locked out configuration. Unlike the previously disclosed knives, knife 1005 includes a slot 1005a of suitable configuration that is defined by respective upper and lower interior walls 1005c, 1005d and is positioned adjacent a bottom flange 1018a. Slot 1005a extends horizontally across knife 1005 (FIG. 133) such that knife 1005 can engage and/or disengage from a locking lever 1030 (FIG. 132) and move from a retracted configuration to an extended configuration. A notch 1005b of suitable configuration is defined through lower interior wall 1005d and is configured to selectively engage a corresponding lateral extension 1031 that is provided on locking lever 1030 to lock out knife 1005 and prevent misfiring thereof (see FIGS. 128 and 132-133). Slot 1005a including notch 1005b may be formed via one or more suitable processes, e.g., etching or milling process, during a manufacturing process of knife 1005.

With reference to FIG. 132, locking lever 1030 is illustrated including a generally elongated configuration including proximal and distal ends 1030a, 1030b, respectively. An aperture 1032 of suitable configuration is provided adjacent proximal end 1030a and is configured to couple to a rivet 1009a that is configured along with an opposing rivet 1009b to couple jaw members 1008 and 1010 to one another (FIG. 130). Locking lever 1030 pivots about rivet 1009a so as to allow lateral extension 1031 to selectively engage with and disengage from notch 1005b (see FIGS. 128-129). A spring (not shown) operably couples to locking lever 1030 and is utilized to bias distal end 1030b of locking lever 1030 downwardly and into contact with a blocking member 1040 (FIGS. 128-130).

Blocking member 1040 is provided at a proximal end of an actuation sled (not shown) of the cartridge (not shown) and includes a slanted proximal end 1040a that is configured to engage the distal end 1030b of the locking lever 1030 when the cartridge is coupled to the jaw member. When the proximal end 1040a of the blocking member 1040 engages the distal end 1030b of the locking lever 1030, the locking lever 1030 moves downwardly and the lateral extension 1031 moves out of engagement with the notch 1005b which allows the working end 1001 to advance through the cartridge.

In use, locking lever 1030 is, initially, in a locked out configuration with lateral extension 1031 positioned within the notch 1005b of the knife 1005 to prevent distal translation of the working end 1001 (FIG. 128). Thereafter, the cartridge may be coupled to jaw member which causes the proximal end 1040a of the blocking member 1040 to engage the distal end 1030b of the locking lever 1030 which moves the lateral extension 1031 of the locking lever 1030 out of engagement with the notch 1005b which allows the working end 1001 to advance through the cartridge (FIG. 129).

When fired, the working end 1001 engages the blocking member 1040 of the actuation sled to move the working end 1001 and blocking members 1040 including the actuation sled distally through the cartridge. The locking lever 1030 will move back to upward configuration as a result of the blocking member 1040 being advanced through the cartridge. When the working end 1001 is moved back to the retracted configuration, the working end 1001 is locked out from advancing as a result of engagement between the lateral extension 1031 and notch 1005b of the knife 1005.

With reference to FIGS. 134-137, a reload 1106 includes a locking mechanism according to an embodiment of the instant disclosure and is configured for use with surgical stapling apparatuses 100, 200 is illustrated. The locking mechanisms utilized by reload 1106 and reload 1006 are substantially similar to one another. Accordingly only those features unique to reload 1106 are described in further detail.

Unlike knife 1005 that includes a notch 1005b, a notch 1105b of suitable configuration is defined within a slot 1105a as opposed to a lower interior wall 1105d (see FIG. 137 for example). Slot 1105b is configured to selectively engage a proximal end 1130a that is provided on a locking lever 1130 to lock out knife 1105 and prevent misfiring thereof (see FIGS. 134-135).

Locking lever 1130 is configured to move sideways as opposed to up and down as with locking lever 1030. Accordingly, locking lever 1130 is biased outwardly to the right to urge proximal end 1130a into engagement with notch 1150b to lock out knife 1105 (FIG. 135).

A blocking member 1140 is provided on an actuation sled 1115 (shown in phantom) and is configured to engage a distal end 1130b of locking lever 1130 (FIG. 134). Specifically, a proximal portion 1115a of blocking member 1140 is angled and configured to selectively engage distal end 1130b to move distal end 1130b inwardly to the left such that proximal end 1130a moves out of engagement of notch 1105b (FIG. 134). Once proximal end 1130a is moved out of engagement with notch 1105b, knife 1105 may be fired.

In use, locking lever 1130 is, initially, biased to a locked out configuration so that knife 1105 cannot be fired (FIG. 135). Cartridge 1112 may be coupled to jaw 1108. In doing so, proximal portion 1140a of blocking member 1140 moves into contact with distal end 1130b of locking lever 1130 and moves proximal end 1130a of locking lever 1130 out of engagement with notch 1105b (FIG. 134).

With proximal end 1130a disengaged from notch 1105b, knife 1105 may then be fired. As knife 1105 travels distally, it contacts actuation sled 1115, which, in turn, moves proximal end 1140a of blocking member 1140 out of engagement with distal end 1130b locking lever 1130 so as to allow distal end 1130b to move back to the biased configuration and locking lever 1130 back to the locked out configuration. In the locked out configuration, proximal end 1130a is allowed to engage notch 1105b when knife 1105 is in the retracted configuration (FIG. 135).

With reference to FIGS. 138-140, a reload 1206 includes a locking mechanism according to an embodiment of the instant disclosure and is configured for use with surgical stapling apparatuses 100, 200 is illustrated.

A locking lever 1230 is pivotably coupled to a bottom surface 1208a adjacent a channel 1214 of jaw member 1208 at a proximal end thereof adjacent the working end 1201. A pivot pin 1231 is utilized to couple locking lever 1230 to bottom surface 1208a and is configured to allow locking lever 1230 to pivot thereabout from an activated (or locked out) configuration (FIG. 138), wherein the working end 1201 is locked out, to a deactivated configuration wherein the working end 1201 is allowed to move distally through cartridge 1212 (FIG. 140). A detent or protuberance 1232 of suitable configuration is provided on a bottom surface of locking lever 1230 and is configured to contact bottom flange 1218b of the working end 1201 as the working end 1201 is translated distally through cartridge 1212. Protuberance 1232 includes a proximal portion 1234a and a distal portion 1234b that are configured to cam locking lever 1230 such that the working end 1201 may move distally past locking lever 1230 and configured to cam locking lever 1230 such that the working end 1201 may be moved proximally past locking lever 1230. A spring (not explicitly shown) may be utilized to bias locking lever 1230 into the activated configuration. Specifically, the spring, e.g., a torsion spring, is configured to bias locking lever 1230 such that a proximal edge 1233 serves as a stop and contacts bottom flange 1218b when the working end 1201 is moved distally.

A bottom portion 1212a of cartridge 1212 adjacent an actuation sled 1215 (shown in phantom) includes a removable tab portion 1240 that is configured to urge locking lever 1230 into the deactivated configuration when cartridge 1212 is installed (FIG. 139). Tab portion 1240 may be affixed to bottom portion 1212a via any suitable methods. For example, in the illustrated embodiment, tab portion 1240 is perforated and configured to be removed when contacted by the working end 1201 as the working end 1201 is translated distally through cartridge 1212 (FIG. 140).

In use, locking lever 1230 is, initially, in the activated configuration to lock out the working end 1201 to prevent misfire thereof (FIG. 138). Thereafter, cartridge 1212 may be installed. In doing so, bottom portion 1212a including tab portion 1240 is positioned over locking lever 1240 to urge locking lever 1240 into the deactivated configuration (FIG. 139).

The working end 1201 may then be fired. As the working end 1201 is translated distally, bottom flange 1218b contacts proximal portion 1234a which causes protuberance 1232 to move upwards, which, in turn, breaks off (e.g., removes) tab portion 1240 (FIG. 140) from the bottom surface 1212a of cartridge 1212. When tab portion 1240 is removed, locking lever 1230 is urged back to the activated configuration and into the cartridge 1212 (see FIG. 138). The working end 1201 may then be moved back to the retracted configuration. Specifically, bottom portion 1218b contacts distal portion 1234b and cams locking lever 1230 such that the working end 1201 may slide over protuberance 1232 and back to the retracted configuration. In the retracted configuration, the working end 1201 is locked out and prevented from misfiring.

With reference to FIGS. 141-149, a reload 1306 includes a locking mechanism according to an embodiment of the instant disclosure and is configured for use with surgical stapling apparatuses 100, 200 is illustrated.

With reference to FIGS. 141-143, initially, reload 1306 includes a pivot assembly 1350 that includes top and lower portions 1350a, 1350b. Unlike the previously described pivot assemblies, e.g., pivot assembly 150, lower portion 1350b of pivot assembly 1350 includes two leg members 1353a, 1353b that are not identical. Specifically, leg member 1353a extends distally past leg member 1353b and includes an aperture 1354 of suitable configuration that is configured to receive therein a lockout structure 1330. In the illustrated embodiment, aperture 1354 includes a generally square configuration that complements a configuration of lockout structure 1330 (FIGS. 143-144). Aperture 1354 is configured so as to allow locking structure 1330 to move outwardly from an activated (locked out) configuration (FIGS. 142 and 146) to a deactivated (or non-locked out) configuration (FIGS. 147 and 149).

With continued reference to FIGS. 141-143, a cam block 1340 operably couples to a channel 1341 (FIG. 142) that is provided within jaw member 1308. Cam block 1340 is translatable along channel 1341 and is configured to contact lockout structure 1330 when cartridge 1312 is installed (FIGS. 146-147). Cam block 1340 includes a proximal portion 1340a and a distal portion 1340b. Distal portion 1340b includes a generally rectangular configuration having a distal wall 1342 that is configured to contact a proximal end of an actuation sled (not shown) of cartridge 1312 when cartridge 1312 is installed. This contact between the actuation sled and distal wall 1342 moves cam block 1340 proximally and into contact with lockout structure 1330. Specifically, an outer facing, slanted, sidewall 1343 is provided at proximal portion 1340a and is configured to cam a corresponding inner facing, slanted, sidewall 1331 provided on lockout structure 1330 (FIGS. 144-145).

In embodiments, cam block 1340 may be configured to selectively couple to the actuation sled via one or more suitable coupling methods. For example, in an embodiment an indent/detent configuration may be utilized to couple cam block 1340 to the actuation sled when the actuation sled is installed. In this particular embodiment, for example, cam block 1340 may include a detent (not shown) that is configured to couple to a corresponding indent on the actuation sled. Moreover, cam block 1340 may be configured to translate distally when the actuation sled is contacted by the working end 1301 and moved distally through cartridge 1312.

Alternatively, while cam block 1340 has bee described herein as being a separate component of the actuation sled, it is within the purview of the instant disclosure to provide cam block 1340 at a proximal end of the actuation sled. In this particular embodiment, cam block 1340 may be monolithically formed with the actuation sled; or may be a separate component that is coupled to the actuation sled via one or more coupling methods, e.g. ultrasonic welding.

Referring to FIGS. 144-145, lockout structure 1330 includes a base portion 1334 and a generally upright post portion 1332. Base portion 1334 is configured so as to allow sidewall 1343 of cam block 1340 to move beneath lockout structure 1330 and into contact with sidewall 1331 lockout structure 1330 as cam block 1340 is moved proximally. Sidewall 1331 extends diagonally across a bottom surface 1334a of base portion 1334 and is configured so as to allow cam block 1340 to cam lockout structure 1330 outwardly (FIGS. 146-147) as cam block 1340 is moved proximally. A top surface 1334b of base portion 1334 slidably contacts a bottom surface 1352 of leg member 1353b and slides therealong when lockout structure 1330 is moved outwardly, see FIGS. 146-147).

Post portion 1332 extends orthogonally from top surface 1334b of base portion 1334 and includes a generally rectangular configuration (FIGS. 144-145). Post portion 1332 is received through aperture 1354 and includes a top portion 1336 that extends past a top surface of leg member 1353a so as to contact a top flange 1318a of a knife 1305 prior to cartridge 1312 being installed (FIGS. 141-142). Specifically, top portion 1336 includes a notched corner 1338 of suitable configuration defined by sidewalls 1338a, 1338b that are disposed at a 90 degree angle with respect to one another and a bottom wall 1338c from which sidewalls 1338a, 1338b extend. Notched corner 1338 is configured to contact top flange 1318a of knife 1305 to lock out the working end 1301 and prevent misfiring thereof.

In embodiments, a leading corner edge 1338c (shown in phantom in FIG. 144) may be provided and configured to allow the working end 1301 to move proximally past lockout structure 1330 so that the working end 1301 may be moved back to the retracted configuration. In this particular embodiment, a top flange 1318a is configured to contact and slide against leading corner edge 1338c so as to allow the working end 1301 to be moved to the retracted configuration.

A spring 1367, e.g., a coil spring, (FIG. 1367) of suitable configuration is provided within aperture 1354 and is configured to bias lockout structure 1330 inwardly. More particularly, spring 1367 is provided within aperture 1354 and contacts an outer sidewall (not explicitly show) of post portion 1332 to urge lockout structure 1330 inwardly. Coil spring 1367 may be coupled to the outer sidewall of post portion 1332 via any suitable coupling methods. For example, an annular recess of suitable configuration may be provided on the outer wall of post portion 1332 and configured to receive coil spring 1367 therein.

In use, lockout structure 1330 is, initially, in the activated configuration to lock out the working end 1301 to prevent misfire thereof (FIG. 142). Thereafter, cartridge 1312 may be installed. As noted above, actuation sled 1315 and cam block 1340 may be configured to couple to one another when cartridge 1312 is installed. In this particular embodiment, actuation sled 1315 contacts cam block 1340 and couples thereto to move cam block 1340 proximally such that sidewall 1343 of cam block 1340 contacts sidewall 1331 of lockout structure 1330 to move top portion 1336 including notched corner 1338 outwardly and out of contact (and/or out of a path of translation of the working end 1301) with top flange 1318a of the working end 1301 (FIGS. 148-149).

The working end 1301 may then be fired. As the working end 1301 translates distally, it contacts the actuation sled and moves the actuation sled including cam block 1340 coupled thereto distally. As a result thereof, cam block 1340 moves out of contact with lockout structure 1330 and lockout structure 1330 moves back to the locked out configuration as a result of the biasing force against the outer wall of post portion 1332 provided by spring 1367.

The working end 1301 may then be moved proximally past lockout structure 1330 and back to the retracted configuration. Once the working end 1301 is moved back to the retracted configuration, lockout structure 1330 locks out the working end 1301 in a manner as described above.

In embodiments where the actuation sled and cam block 1340 are not configured to couple to one another, e.g., such as when the working end 1301 is not configured for multiple firing, cam block 1340 may remain in contact with lockout structure 1330 when the working end 1301 is fired. In this particular embodiment, cam block 1340 maintains lockout structure 1330 in an outward configuration, e.g., a deactivated configuration.

With reference to FIGS. 150-156, and initially with reference to FIGS. 150-151, a reload 1406 includes a locking mechanism according to an embodiment of the instant disclosure and is configured for use with surgical stapling apparatuses 100, 200 is illustrated.

Unlike the previously described embodiments of reloads that utilize locking mechanisms that are configured to prevent firing without a cartridge or spent cartridge installed, reload 1406 (FIG. 150) utilizes a locking mechanism that prevents misfiring of the working end 1401 only when a spent cartridge is coupled to a jaw member 1408. To this end, jaw member 1408 is configured to couple to a cartridge 1412 that includes a latch 1440 and a locking pin 1430 that collectively are configured to prevent misfiring of the working end 1401 when a spent cartridge 1412 is coupled to jaw member 1408.

Latch 1440 is provided at a proximal end of cartridge 1412 and is coupled thereto via one or more suitable coupling methods (FIGS. 151-153). In the illustrated embodiment, for example, latch 1440 includes a generally elongated configuration having an aperture 1441 of suitable configuration that is configured to receive therethrough a rivet 1442, pin or the like. Rivet 1442 extends through a tissue contacting surface 1421 of cartridge 1412 and couples latch 1440 to cartridge 1412 such that a bottom surface (not explicitly shown) of latch 1440 rests against a top surface 1421a that lies in the same general plane as tissue contacting surface 1421 of cartridge 1412. Moreover, rivet 1442 couples latch 1440 to cartridge 1412 so as to allow latch 1440 to rotate about rivet 1442 when latch 1440 is contacted by a top flange 1418a of knife 1405 (FIG. 154).

A boss 1444 extends a predetermined distance orthogonally from a top surface 1446 of latch 1440 and is configured to contact a leading edge 1419a of top flange 1418a (FIGS. 151 and 154). Boss 1444 includes a generally circumferential configuration which facilitates contact between leading edge 1419a and boss 1444 as the working end 1401 is translated distally.

In an initial configuration, latch 1440 positioned at least partially over recess 1431 to contact locking pin 1430 and maintain locking pin 1430 in a deactivated configuration (FIG. 151). Moreover, contact between leading edge 1419a and boss 1444 as the working end 1401 translates distally therepast causes latch 1440 to rotate about rivet 1442 and move out of contact with locking pin 1430 so that locking pin 1430 may move into the locked out configuration. (FIGS. 154-156).

Continuing with reference to FIGS. 151-153, locking pin 1430 is provided at a proximal end of cartridge 1412 adjacent latch 1440 and is received within an aperture 1431 that extends through tissue contacting surface 1421 of cartridge 1412. Locking pin 1430 includes a generally circumferential configuration having a flange 1432 at a bottom end thereof configured to contact an interior top wall of cartridge 1412. A tip 1434 of locking pin 1430 includes a distal end 1430a that is chamfered, beveled, slanted, etc., to slidably contact a trailing edge 1419b of top flange 1418a when the working end 1401 is moved back to the retracted configuration; the chamfered configuration of distal end 1430a allows for a smooth transition of the working end 1401 past locking pin 1430 (FIG. 155). Moreover, a proximal end 1430b does not include a chamfer and is configured to contact leading edge 1419a of the working end 1401 to lock out the working end 1401 and prevent misfiring thereof.

Locking pin 1430, e.g., tip 1434, is movable within aperture 1431 from deactivated configuration (FIG. 151), wherein tip 1434 is flush with the tissue contacting surface 1421 of cartridge 1412 (FIG. 151) to an activated (or locked out) configuration, wherein tip 1434 is disposed a predetermined distance above tissue contacting surface 1421 (FIGS. 154 and 156). In the deactivated configuration of locking pin 1434, the working end 1401 including top flange 1418a of the knife 1405 is allowed to translate distally past locking pin 1430.

A spring 1467 (or other suitable device) operably couples to locking pin 1430 adjacent flange 1432 and is configured to upwardly bias locking pin 1430 into the activated configuration (FIGS. 152-153). A protrusion of suitable configuration (not shown) may be provided on a bottom surface of locking pin 1430 and configured to couple to spring 1467 to maintain spring 1467 in contact with locking pin 1430. Alternatively, spring 1467 may be fixedly coupled to locking pin 1430 by one or more suitable fixation methods, e.g., an adhesive.

In use, latch 1440 is, initially, positioned over locking pin 1430 to maintain locking in 1430 in the deactivated configuration (FIG. 151). In the deactivated configuration, the working end 1401 is allowed to move distally past locking pin 1430 to the engage actuation sled.

The working end 1401 may then be fired. As the working end 1401 translates distally, leading edge 1419a contacts boss 1444, which, in turn rotates latch 1440 about rivet 1442 and moves out of contact with locking pin 1430 so that locking pin 1430 may move into the locked out configuration. (FIGS. 154-156).

The working end 1401 may then be moved back to the retracted configuration. As noted above, the chamfered configuration of distal end 1430a allows for a smooth transition of the working end 1401 past locking pin 1430 (FIG. 155).

Once in the retracted configuration, a proximal end 1430b contacts leading edge 1419a of the working end 1401 to lock out the working end 1401 and prevent misfiring thereof (FIG. 156).

With reference to FIGS. 157-158, a cartridge assembly 1512 is configured for use with a reload (not explicitly shown) that includes a locking mechanism according to an embodiment of the instant disclosure and is configured for use with surgical stapling apparatuses 100, 200 is illustrated.

One or more mechanical interfaces are provided on a proximal end of an actuation sled 1515 and are configured to selectively engage one or more mechanical interfaces disposed on a knife (not explicitly shown). In the illustrated embodiment, for example, a female end 1530 of suitable configuration is provided adjacent a bottom surface 1515a of actuation sled 1515 and is configured to selectively engage a corresponding male end (not explicitly shown) that is operably coupled to the knife. Female end 1530 includes a pair of bifurcated posts 1531a, 1531b that extend in a generally orthogonal direction relative to bottom surface 1515a (FIGS. 157-158) and are aligned with the corresponding male end on the knife. Posts 1531a, 1531b are spaced apart from one another so that a press or friction fit may be utilized to selectively couple the knife and actuation sled 1515 to one another as the knife is translated distally through a firing sequence. As can be appreciated, actuation sled 1515 may include the male end and the knife may include female end 1530. Moreover, it is within the purview of the instant disclosure to utilize other mechanical interfaces to selectively couple actuation sled 1515 and the knife to one another.

A lockout clip 1540 of suitable configuration is provided on bottom surface 1515a of actuation sled 1515 and is configured to selectively engage a cover 1561 of cartridge 1512 (FIGS. 157-158) after the knife is fired and moved back to the retracted configuration. Lockout clip 1540 may be monolithically formed with actuation sled 1515 or may be coupled thereto via one or more suitable coupling methods, e.g., adhesive, ultrasonic welding, etc.

In an embodiment, such as the illustrated embodiment, lockout clip 1540 includes a generally elongated portion 1541 that is utilized to couple to bottom surface 1515a of actuation sled 1515; this embodiment is particularly useful when lockout clip 1540 is formed as separate component from actuation sled 1515 and, subsequently, coupled thereto. Alternatively, in embodiments, such as when lockout clip 1540 is monolithically formed with actuation sled 1515, elongated portion 1541 may be eliminated.

A generally arcuate portion 1542 extends distally from elongated portion 1541 to form a living hinge thereabout and includes a lip 1543 that engages cover 1561 (FIG. 158). Alternatively, arcuate portion 1542 including lip 1543 may be formed on bottom surface 1515a during a manufacturing process of actuation sled 1515. In either instance, arcuate portion 1542 including lip 1543 are configured such that in a pre-installed configuration, lip 1543 is biased towards elongated portion 1541 and bottom surface 1515a of actuation sled 1515 so as not to engage cover 1561 (FIG. 157). In accordance with the instant disclosure, locking clip 1540 (and operable components associated therewith) is/are configured not to impede distal translation of the knife through cartridge 1512.

In use, in a pre-installed configuration, actuation sled 1515 is positioned within cartridge 1521 as shown in FIG. 157. In this configuration, locking clip 1540 is not in a locked out configuration and the knife is free to translate distally through a firing sequence.

The knife may then be fired. As the knife translates distally, the male end on the knife engages female end 1530 (FIGS. 154-156) on actuation sled 1515. Thereafter, the knife including actuation sled 1515 now coupled thereto may be moved proximally past a proximal edge 1562 of cartridge 1512 to the retracted configuration. In doing so, lip 1543 is free to flex away from elongated portion 1542 and bottom surface 1515a of actuation sled to a locked out configuration. In the locked out configuration, lip 1543 is positioned to engage proximal edge 1562 of cover 1512, which, in turn, prevents distal translation and, thus, misfiring of the knife (FIG. 158).

The figures show a replaceable loading unit with surgical stapling jaws that has a shaft (such as a shaft 109) that can be attached to a surgical stapling apparatus. Other configurations are contemplated. For example, the replaceable loading unit can itself have a removable and replaceable cartridge assembly. Alternatively, the jaws of the instrument can be permanently attached and configured to receive a removable and replaceable cartridge.

In any of the embodiments disclosed herein, the instrument housing 102 can be manually operated or powered.

While several embodiments of the disclosure have been shown in the drawings, it is not intended that the disclosure be limited thereto, as it is intended that the disclosure be as broad in scope as the art will allow and that the specification be read likewise. Therefore, the above description should not be construed as limiting, but merely as exemplifications of particular embodiments. Those skilled in the art will envision other modifications within the scope and spirit of the claims appended hereto.

Claims

1. A loading unit comprising: a first jaw member configured to receive a staple cartridge;a second jaw member having an anvil;a drive member defining a notch, the drive member movable between a retracted position and an advanced position, the drive member configured to advance a knife between the first and second jaw members as the drive member is advanced distally from the retracted position to the advanced position along a longitudinal axis of the loading unit; anda latch including a lockout member and a protuberance, the lockout member having a locked configuration in which the lockout member is received within the notch to prevent the drive member from advancing from the retracted position and an unlocked configuration in which the drive member is advanceable from the retracted position, the protuberance configured to be engaged by a blocking member of a staple cartridge to transition the latch from the locked configuration to the unlocked configuration.
2. The loading unit according to claim 1, wherein the latch includes an elongate member offset from and extending distally from the lockout member in a direction parallel to the longitudinal axis, the protuberance forming a distal end of the elongate member.
3. The loading unit according to claim 2, wherein the latch includes a lateral extension extending laterally from the elongate member and configured to be urged distally to bias the latch towards the locked configuration.
4. The loading unit according to claim 3, further comprising: a pivot member configured to pivotally support at least one of the first or second jaw member relative to the other jaw member, the pivot member defining a horizontal cavity parallel to the longitudinal axis; anda first biasing member received in the horizontal cavity, the first biasing member engaged with the lateral extension to urge the lateral extension distally.
5. The loading unit according to claim 4, wherein the latch includes a hinge member extending laterally from the elongate member, the hinge member configured to be urged towards the first jaw member.
6. The loading unit according to claim 5, wherein the pivot member defines a vertical cavity perpendicular to the longitudinal axis.
7. The loading unit according to claim 6, further comprising a second biasing member received in the vertical cavity and engaged with the hinge member to urge the latch towards the first jaw member.
8. The loading unit according to claim 1, further comprising a staple cartridge received within the first jaw member, the staple cartridge including a blocking member engaged with the protuberance to move the protuberance in a first direction such that the lockout member is moved in a second direction opposite the first direction towards the unlocked configuration.
9. The loading unit according to claim 8, wherein the first direction is perpendicular to the longitudinal axis and towards the second jaw member.
10. The loading unit according to claim 8, wherein the staple cartridge is releasably received within the first jaw member.
11. The loading unit according to claim 1, wherein the drive member is configured to move the blocking member distally as the drive member is moved from the retracted position towards the advanced position such that the drive member is prevented from subsequent distal movement from the retracted position.
12. A surgical apparatus comprising: a handle assembly;a loading unit supported by and extending distally from the handle assembly, the loading unit including: an elongate member;a first jaw member supported by a distal portion of the elongate member;a second jaw member supported by the distal portion of the elongate member and having an anvil;a drive member defining a notch, the drive member movable between a retracted position and an advanced position, the drive member configured to advance a knife between the first and second jaw members as the drive member is advanced distally from the retracted position to an advanced position along a longitudinal axis of the loading unit;a latch including a lockout member and a protuberance, the lockout member having a locked configuration in which the lockout member is received within the notch to prevent the drive member from advancing from the retracted position and an unlocked configuration in which the drive member is advanceable from the retracted position, the protuberance configured to be engaged by a blocking member of a staple cartridge to transition the latch from the locked configuration to the unlocked configuration; anda staple cartridge disposed within the first jaw member.
13. The surgical apparatus according to claim 12, wherein the staple cartridge is releaseably received within the first jaw member.
14. The surgical apparatus according to claim 12, wherein the staple cartridge includes a blocking member having an unfired position in which the blocking member engages the protuberance to move the protuberance in a first direction such that the lockout member is moved to the unlocked configuration.
15. The surgical apparatus according to claim 14, wherein the blocking member has a fired position in which the blocking member is positioned distal of the protuberance such that the lockout member is in the locked configuration.
16. The surgical apparatus according to claim 14, wherein the staple cartridge includes a sled operably coupled to the drive member such that advancement of the drive member from the retracted position towards the advanced position advances the sled through the staple cartridge to drive a plurality of staples towards the anvil of the second jaw member, the sled including the blocking member.
17. The surgical apparatus according to claim 16, wherein the blocking member is releasably secured to the sled.
18. The surgical apparatus according to claim 12, further comprising: a pivot assembly at a distal end of the elongate member, the pivot assembly pivotally supporting at least one of the first or second jaw members, the pivot assembly including a horizontal cavity defined therein that extends in a direction parallel to a longitudinal axis of the elongate member; anda first biasing member disposed within the horizontal cavity and engaged with a portion of the latch such that the lockout member is biased towards the locked configuration.
19. The surgical apparatus according to claim 18, wherein the pivot assembly defines a vertical cavity that is perpendicular to the longitudinal axis of the elongate member, and wherein a second biasing member is disposed within the vertical cavity, the second biasing member engaged with the latch to bias a portion of the latch towards the first jaw member.
20. The surgical apparatus according to claim 19, wherein the latch includes a lateral extension engaged by the first biasing member and a hinge engaged by the second biasing member, the lateral extension positioned distal of the hinge.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of U.S. patent application Ser. No. 15/043,638, filed Feb. 15, 2016, which is a continuation of U.S. patent application Ser. No. 13/923,970, filed Jun. 21, 2013, now U.S. Pat. No. 9,289,211, which claims the benefit of and priority to U.S. Provisional Patent Application No. 61/779,873, filed Mar. 13, 2013. The entire contents of each of the above applications are hereby incorporated by reference.

US Referenced Citations (1276)

Number	Name	Date	Kind
3079606	Bobrov et al.	Mar 1963	A
3490675	Green et al.	Jan 1970	A
3499591	Green	Mar 1970	A
3777538	Weatherly et al.	Dec 1973	A
3882854	Hulka et al.	May 1975	A
4027510	Hiltebrandt	Jun 1977	A
4086926	Green et al.	May 1978	A
4244372	Kapitanov et al.	Jan 1981	A
4429695	Green	Feb 1984	A
4505414	Filipi	Mar 1985	A
4520817	Green	Jun 1985	A
4589413	Malyshev et al.	May 1986	A
4596351	Fedotov et al.	Jun 1986	A
4602634	Barkley	Jul 1986	A
4605001	Rothfuss et al.	Aug 1986	A
4608981	Rothfuss et al.	Sep 1986	A
4610383	Rothfuss et al.	Sep 1986	A
4633861	Chow et al.	Jan 1987	A
4633874	Chow et al.	Jan 1987	A
4671445	Barker et al.	Jun 1987	A
4700703	Resnick et al.	Oct 1987	A
4703887	Clanton et al.	Nov 1987	A
4728020	Green et al.	Mar 1988	A
4752024	Green et al.	Jun 1988	A
4784137	Kulik et al.	Nov 1988	A
4863088	Redmond et al.	Sep 1989	A
4869415	Fox	Sep 1989	A
4892244	Fox et al.	Jan 1990	A
4955959	Tompkins et al.	Sep 1990	A
4978049	Green	Dec 1990	A
4991764	Mericle	Feb 1991	A
5014899	Presty et al.	May 1991	A
5031814	Tompkins et al.	Jul 1991	A
5040715	Green et al.	Aug 1991	A
5065929	Schulze et al.	Nov 1991	A
5071430	de Salis et al.	Dec 1991	A
5074454	Peters	Dec 1991	A
5083695	Foslien et al.	Jan 1992	A
5084057	Green et al.	Jan 1992	A
5106008	Tompkins et al.	Apr 1992	A
5111987	Moeinzadeh et al.	May 1992	A
5129570	Schulze et al.	Jul 1992	A
5141144	Foslien et al.	Aug 1992	A
5156315	Green et al.	Oct 1992	A
5156614	Green et al.	Oct 1992	A
5163943	Mohiuddin et al.	Nov 1992	A
5170925	Madden et al.	Dec 1992	A
5171247	Hughett et al.	Dec 1992	A
5173133	Morin et al.	Dec 1992	A
5180092	Crainich	Jan 1993	A
5188274	Moeinzadeh et al.	Feb 1993	A
5220928	Oddsen et al.	Jun 1993	A
5221036	Takase	Jun 1993	A
5242457	Akopov et al.	Sep 1993	A
5246156	Rothfuss et al.	Sep 1993	A
5253793	Green et al.	Oct 1993	A
5263629	Trumbull et al.	Nov 1993	A
RE34519	Fox et al.	Jan 1994	E
5275323	Schulze et al.	Jan 1994	A
5282807	Knoepfler	Feb 1994	A
5289963	McGarry et al.	Mar 1994	A
5307976	Olson et al.	May 1994	A
5308576	Green et al.	May 1994	A
5312023	Green et al.	May 1994	A
5318221	Green et al.	Jun 1994	A
5326013	Green et al.	Jul 1994	A
5328077	Lou	Jul 1994	A
5330486	Wilk	Jul 1994	A
5332142	Robinson et al.	Jul 1994	A
5336232	Green et al.	Aug 1994	A
5344061	Crainich	Sep 1994	A
5352238	Green et al.	Oct 1994	A
5356064	Green et al.	Oct 1994	A
5358506	Green et al.	Oct 1994	A
5364001	Bryan	Nov 1994	A
5364002	Green et al.	Nov 1994	A
5364003	Williamson, IV	Nov 1994	A
5366133	Geiste	Nov 1994	A
5376095	Ortiz	Dec 1994	A
5379933	Green et al.	Jan 1995	A
5381943	Allen et al.	Jan 1995	A
5382255	Castro et al.	Jan 1995	A
5383880	Hooven	Jan 1995	A
5389098	Tsuruta et al.	Feb 1995	A
5395033	Byrne et al.	Mar 1995	A
5395034	Allen et al.	Mar 1995	A
5397046	Savage et al.	Mar 1995	A
5397324	Carroll et al.	Mar 1995	A
5403312	Yates et al.	Apr 1995	A
5405072	Zlock et al.	Apr 1995	A
5407293	Crainich	Apr 1995	A
5413268	Green et al.	May 1995	A
5415334	Williamson et al.	May 1995	A
5415335	Knodell, Jr.	May 1995	A
5417361	Williamson, IV	May 1995	A
5423471	Mastri et al.	Jun 1995	A
5425745	Green et al.	Jun 1995	A
5431322	Green et al.	Jul 1995	A
5431323	Smith et al.	Jul 1995	A
5433721	Hooven et al.	Jul 1995	A
5441193	Gravener	Aug 1995	A
5445304	Plyley et al.	Aug 1995	A
5447265	Vidal et al.	Sep 1995	A
5452837	Williamson, IV et al.	Sep 1995	A
5456401	Green et al.	Oct 1995	A
5464300	Crainich	Nov 1995	A
5465895	Knodel et al.	Nov 1995	A
5467911	Tsuruta et al.	Nov 1995	A
5470007	Plyley et al.	Nov 1995	A
5470010	Rothfuss et al.	Nov 1995	A
5472132	Savage et al.	Dec 1995	A
5474566	Alesi et al.	Dec 1995	A
5476206	Green et al.	Dec 1995	A
5478003	Green et al.	Dec 1995	A
5480089	Blewett	Jan 1996	A
5482197	Green et al.	Jan 1996	A
5484095	Green et al.	Jan 1996	A
5484451	Akopov et al.	Jan 1996	A
5485947	Olson et al.	Jan 1996	A
5485952	Fontayne	Jan 1996	A
5486185	Freitas et al.	Jan 1996	A
5487499	Sorrentino et al.	Jan 1996	A
5487500	Knodel et al.	Jan 1996	A
5489058	Plyley et al.	Feb 1996	A
5490856	Person et al.	Feb 1996	A
5497933	DeFonzo et al.	Mar 1996	A
5501689	Green et al.	Mar 1996	A
5505363	Green et al.	Apr 1996	A
5507426	Young et al.	Apr 1996	A
5518163	Hooven	May 1996	A
5518164	Hooven	May 1996	A
5529235	Boiarski et al.	Jun 1996	A
5531744	Nardella et al.	Jul 1996	A
5535934	Boiarski et al.	Jul 1996	A
5535935	Vidal et al.	Jul 1996	A
5535937	Boiarski et al.	Jul 1996	A
5540375	Bolanos et al.	Jul 1996	A
5542594	McKean et al.	Aug 1996	A
5549628	Cooper et al.	Aug 1996	A
5551622	Yoon	Sep 1996	A
5553765	Knodel et al.	Sep 1996	A
5554164	Wilson et al.	Sep 1996	A
5554169	Green et al.	Sep 1996	A
5560530	Bolanos et al.	Oct 1996	A
5560532	DeFonzo et al.	Oct 1996	A
5562239	Boiarski et al.	Oct 1996	A
5562241	Knodel et al.	Oct 1996	A
5562682	Oberlin et al.	Oct 1996	A
5562701	Huitema et al.	Oct 1996	A
5564615	Bishop et al.	Oct 1996	A
5571116	Bolanos et al.	Nov 1996	A
5573169	Green et al.	Nov 1996	A
5573543	Akopov et al.	Nov 1996	A
5575799	Bolanos et al.	Nov 1996	A
5575803	Cooper et al.	Nov 1996	A
5577654	Bishop	Nov 1996	A
5579107	Wright et al.	Nov 1996	A
5584425	Savage et al.	Dec 1996	A
5586711	Plyley et al.	Dec 1996	A
5588580	Paul et al.	Dec 1996	A
5588581	Conlon et al.	Dec 1996	A
5597107	Knodel et al.	Jan 1997	A
5601224	Bishop et al.	Feb 1997	A
5607095	Smith et al.	Mar 1997	A
5615820	Viola	Apr 1997	A
5618291	Thompson et al.	Apr 1997	A
5624452	Yates	Apr 1997	A
5626587	Bishop et al.	May 1997	A
5628446	Geiste et al.	May 1997	A
5630539	Plyley et al.	May 1997	A
5630540	Blewett	May 1997	A
5630541	Williamson, IV et al.	May 1997	A
5632432	Schulze et al.	May 1997	A
5634584	Okorocha et al.	Jun 1997	A
5636780	Green et al.	Jun 1997	A
5645209	Green et al.	Jul 1997	A
5647526	Green et al.	Jul 1997	A
5651491	Heaton et al.	Jul 1997	A
5653373	Green et al.	Aug 1997	A
5653374	Young et al.	Aug 1997	A
5653721	Knodel et al.	Aug 1997	A
5655698	Yoon	Aug 1997	A
5657921	Young et al.	Aug 1997	A
5658300	Bito et al.	Aug 1997	A
5662258	Knodel et al.	Sep 1997	A
5662259	Yoon	Sep 1997	A
5662260	Yoon	Sep 1997	A
5662662	Bishop et al.	Sep 1997	A
5662666	Onuki et al.	Sep 1997	A
5665085	Nardella	Sep 1997	A
5667517	Hooven	Sep 1997	A
5669544	Schulze et al.	Sep 1997	A
5673840	Schulze et al.	Oct 1997	A
5673841	Schulze et al.	Oct 1997	A
5673842	Bittner et al.	Oct 1997	A
5676674	Bolanos et al.	Oct 1997	A
5680938	Rubinstein	Oct 1997	A
5680981	Mililli et al.	Oct 1997	A
5680982	Schulze et al.	Oct 1997	A
5680983	Plyley et al.	Oct 1997	A
5690269	Bolanos et al.	Nov 1997	A
5692668	Schulze et al.	Dec 1997	A
5697542	Knodel et al.	Dec 1997	A
5702409	Raybum et al.	Dec 1997	A
5704534	Huitema et al.	Jan 1998	A
5706997	Green et al.	Jan 1998	A
5709334	Sorrentino et al.	Jan 1998	A
5711472	Bryan	Jan 1998	A
5713505	Huitema	Feb 1998	A
5715988	Palmer	Feb 1998	A
5716366	Yates	Feb 1998	A
5718359	Palmer et al.	Feb 1998	A
5725536	Oberlin et al.	Mar 1998	A
5725554	Simon et al.	Mar 1998	A
5728110	Vidal et al.	Mar 1998	A
5732806	Foshee et al.	Mar 1998	A
5735848	Yates et al.	Apr 1998	A
5743456	Jones et al.	Apr 1998	A
5749893	Vidal et al.	May 1998	A
5752644	Bolanos et al.	May 1998	A
5762255	Chrisman et al.	Jun 1998	A
5762256	Mastri et al.	Jun 1998	A
5769303	Knodel et al.	Jun 1998	A
5769892	Kingwell	Jun 1998	A
5772099	Gravener	Jun 1998	A
5772673	Cuny et al.	Jun 1998	A
5779130	Alesi et al.	Jul 1998	A
5779131	Knodel et al.	Jul 1998	A
5779132	Knodel et al.	Jul 1998	A
5782396	Mastri et al.	Jul 1998	A
5782397	Koukline	Jul 1998	A
5782834	Lucey et al.	Jul 1998	A
5785232	Vidal et al.	Jul 1998	A
5797536	Smith et al.	Aug 1998	A
5797537	Oberlin et al.	Aug 1998	A
5797538	Heaton et al.	Aug 1998	A
5810811	Yates et al.	Sep 1998	A
5810855	Rayburn et al.	Sep 1998	A
5814055	Knodel et al.	Sep 1998	A
5814057	Oi et al.	Sep 1998	A
5816471	Plyley et al.	Oct 1998	A
5817109	McGarry et al.	Oct 1998	A
5820009	Melling et al.	Oct 1998	A
5823066	Huitema et al.	Oct 1998	A
5826776	Schulze et al.	Oct 1998	A
5829662	Allen et al.	Nov 1998	A
5833695	Yoon	Nov 1998	A
5836147	Schnipke	Nov 1998	A
5862972	Green et al.	Jan 1999	A
5865361	Milliman et al.	Feb 1999	A
5871135	Williamson, IV et al.	Feb 1999	A
5873873	Smith et al.	Feb 1999	A
5878938	Bittner et al.	Mar 1999	A
5893506	Powell	Apr 1999	A
5894979	Powell	Apr 1999	A
5897562	Bolanos et al.	Apr 1999	A
5901895	Heaton et al.	May 1999	A
5911352	Racenet et al.	Jun 1999	A
5911353	Bolanos et al.	Jun 1999	A
5918791	Sorrentino et al.	Jul 1999	A
5919198	Graves, Jr. et al.	Jul 1999	A
5922001	Yoon	Jul 1999	A
5931847	Bittner et al.	Aug 1999	A
5941442	Geiste et al.	Aug 1999	A
5954259	Viola et al.	Sep 1999	A
5964774	McKean et al.	Oct 1999	A
5980510	Tsonton et al.	Nov 1999	A
5988479	Palmer	Nov 1999	A
6004335	Vaitekunas et al.	Dec 1999	A
6010054	Johnson et al.	Jan 2000	A
6032849	Mastri et al.	Mar 2000	A
6045560	McKean et al.	Apr 2000	A
6063097	Oi et al.	May 2000	A
6079606	Milliman et al.	Jun 2000	A
6099551	Gabbay	Aug 2000	A
6109500	Alli et al.	Aug 2000	A
6131789	Schulze et al.	Oct 2000	A
6131790	Piraka	Oct 2000	A
6155473	Tompkins et al.	Dec 2000	A
6197017	Brock et al.	Mar 2001	B1
6202914	Geiste et al.	Mar 2001	B1
6241139	Milliman et al.	Jun 2001	B1
6250532	Green et al.	Jun 2001	B1
6264086	McGuckin, Jr.	Jul 2001	B1
6264087	Whitman	Jul 2001	B1
6269977	Moore	Aug 2001	B1
6279809	Nicolo	Aug 2001	B1
6315183	Piraka	Nov 2001	B1
6315184	Whitman	Nov 2001	B1
6325810	Hamilton et al.	Dec 2001	B1
6330965	Milliman et al.	Dec 2001	B1
6391038	Vargas et al.	May 2002	B2
6398797	Bombard et al.	Jun 2002	B2
6436097	Nardella	Aug 2002	B1
6439446	Perry et al.	Aug 2002	B1
6443973	Whitman	Sep 2002	B1
6463623	Ahn et al.	Oct 2002	B2
6478804	Vargas et al.	Nov 2002	B2
6488196	Fenton, Jr.	Dec 2002	B1
6503257	Grant et al.	Jan 2003	B2
6505768	Whitman	Jan 2003	B2
6544274	Danitz et al.	Apr 2003	B2
6554844	Lee et al.	Apr 2003	B2
6565554	Niemeyer	May 2003	B1
6587750	Gerbi et al.	Jul 2003	B2
6592597	Grant et al.	Jul 2003	B2
6594552	Nowlin et al.	Jul 2003	B1
6602252	Mollenauer	Aug 2003	B2
6612053	Liao	Sep 2003	B2
6619529	Green et al.	Sep 2003	B2
D480808	Wells et al.	Oct 2003	S
6644532	Green et al.	Nov 2003	B2
6656193	Grant et al.	Dec 2003	B2
6669073	Milliman et al.	Dec 2003	B2
6681978	Geiste et al.	Jan 2004	B2
6698643	Whitman	Mar 2004	B2
6716232	Vidal et al.	Apr 2004	B1
6722552	Fenton, Jr.	Apr 2004	B2
6731473	Li et al.	May 2004	B2
6755338	Hahnen et al.	Jun 2004	B2
6783524	Anderson et al.	Aug 2004	B2
6786382	Hoffman	Sep 2004	B1
6808262	Chapoy et al.	Oct 2004	B2
6817509	Geiste et al.	Nov 2004	B2
6830174	Hillstead et al.	Dec 2004	B2
6835199	McGuckin, Jr. et al.	Dec 2004	B2
6843403	Whitman	Jan 2005	B2
RE38708	Bolanos et al.	Mar 2005	E
6877647	Green et al.	Apr 2005	B2
6879880	Nowlin et al.	Apr 2005	B2
6889116	Jinno	May 2005	B2
6905057	Swayze et al.	Jun 2005	B2
6945444	Gresham et al.	Sep 2005	B2
6953138	Dworak et al.	Oct 2005	B1
6953139	Milliman et al.	Oct 2005	B2
6959852	Shelton, IV et al.	Nov 2005	B2
6962594	Thevenet	Nov 2005	B1
6964363	Wales et al.	Nov 2005	B2
6978921	Shelton, IV et al.	Dec 2005	B2
6981628	Wales	Jan 2006	B2
6986451	Mastri et al.	Jan 2006	B1
6988649	Shelton, IV et al.	Jan 2006	B2
6991627	Madhani et al.	Jan 2006	B2
6994714	Vargas et al.	Feb 2006	B2
7000818	Shelton, IV et al.	Feb 2006	B2
7000819	Swayze et al.	Feb 2006	B2
7032799	Viola et al.	Apr 2006	B2
7044352	Shelton, IV et al.	May 2006	B2
7044353	Mastri et al.	May 2006	B2
7055730	Ehrenfels et al.	Jun 2006	B2
7055731	Shelton, IV et al.	Jun 2006	B2
7059508	Shelton, IV et al.	Jun 2006	B2
7070083	Jankowski	Jul 2006	B2
7083075	Swayze et al.	Aug 2006	B2
7097089	Marczyk	Aug 2006	B2
7111769	Wales et al.	Sep 2006	B2
7114642	Whitman	Oct 2006	B2
7121446	Arad et al.	Oct 2006	B2
7128253	Mastri et al.	Oct 2006	B2
7128254	Shelton, IV et al.	Oct 2006	B2
7140527	Ehrenfels et al.	Nov 2006	B2
7140528	Shelton, IV	Nov 2006	B2
7143923	Shelton, IV et al.	Dec 2006	B2
7143924	Scirica et al.	Dec 2006	B2
7143925	Shelton, IV et al.	Dec 2006	B2
7143926	Shelton, IV et al.	Dec 2006	B2
7147138	Shelton, IV	Dec 2006	B2
7159750	Racenet et al.	Jan 2007	B2
7168604	Milliman et al.	Jan 2007	B2
7172104	Scirica et al.	Feb 2007	B2
7188758	Viola et al.	Mar 2007	B2
7207471	Heinrich et al.	Apr 2007	B2
7213736	Wales et al.	May 2007	B2
7225963	Scirica	Jun 2007	B2
7225964	Mastri et al.	Jun 2007	B2
7238195	Viola	Jul 2007	B2
7246734	Shelton, IV	Jul 2007	B2
7258262	Mastri et al.	Aug 2007	B2
7278562	Mastri et al.	Oct 2007	B2
7278563	Green	Oct 2007	B1
7287682	Ezzat et al.	Oct 2007	B1
7293685	Ehrenfels et al.	Nov 2007	B2
7296722	Ivanko	Nov 2007	B2
7296724	Green et al.	Nov 2007	B2
7296772	Wang	Nov 2007	B2
7300444	Nielsen et al.	Nov 2007	B1
7303107	Milliman et al.	Dec 2007	B2
7303108	Shelton, IV	Dec 2007	B2
7308998	Mastri et al.	Dec 2007	B2
7326232	Viola et al.	Feb 2008	B2
7328828	Ortiz et al.	Feb 2008	B2
7328829	Arad et al.	Feb 2008	B2
7334717	Rethy et al.	Feb 2008	B2
7354447	Shelton, IV et al.	Apr 2008	B2
7357287	Shelton, IV et al.	Apr 2008	B2
7364061	Swayze et al.	Apr 2008	B2
7367485	Shelton, IV et al.	May 2008	B2
7377928	Zubik et al.	May 2008	B2
7380695	Doll et al.	Jun 2008	B2
7380696	Shelton, IV et al.	Jun 2008	B2
7396356	Mollenauer	Jul 2008	B2
7398907	Racenet et al.	Jul 2008	B2
7399310	Edoga et al.	Jul 2008	B2
7401720	Durrani	Jul 2008	B1
7401721	Holsten et al.	Jul 2008	B2
7404508	Smith et al.	Jul 2008	B2
7404509	Ortiz et al.	Jul 2008	B2
7407074	Ortiz et al.	Aug 2008	B2
7407075	Holsten et al.	Aug 2008	B2
7407077	Ortiz et al.	Aug 2008	B2
7407078	Shelton, IV et al.	Aug 2008	B2
7416101	Shelton, IV et al.	Aug 2008	B2
7419080	Smith et al.	Sep 2008	B2
7419081	Ehrenfels et al.	Sep 2008	B2
7419495	Menn et al.	Sep 2008	B2
7422139	Shelton, IV et al.	Sep 2008	B2
7424965	Racenet et al.	Sep 2008	B2
7431189	Shelton, IV et al.	Oct 2008	B2
7431730	Viola	Oct 2008	B2
7434715	Shelton, IV et al.	Oct 2008	B2
7434717	Shelton, IV et al.	Oct 2008	B2
7438208	Larson	Oct 2008	B2
7438209	Hess et al.	Oct 2008	B1
7441684	Shelton, IV et al.	Oct 2008	B2
7441685	Boudreaux	Oct 2008	B1
7448525	Shelton, IV et al.	Nov 2008	B2
7451904	Shelton, IV	Nov 2008	B2
7455208	Wales et al.	Nov 2008	B2
7455676	Holsten et al.	Nov 2008	B2
7458494	Matsutani et al.	Dec 2008	B2
7461767	Viola et al.	Dec 2008	B2
7462185	Knodel	Dec 2008	B1
7464846	Shelton, IV et al.	Dec 2008	B2
7464847	Viola et al.	Dec 2008	B2
7464848	Green et al.	Dec 2008	B2
7464849	Shelton, IV et al.	Dec 2008	B2
7467740	Shelton, IV et al.	Dec 2008	B2
7472814	Mastri et al.	Jan 2009	B2
7472815	Shelton, IV et al.	Jan 2009	B2
7472816	Holsten et al.	Jan 2009	B2
7473258	Clauson et al.	Jan 2009	B2
7481347	Roy	Jan 2009	B2
7481348	Marczyk	Jan 2009	B2
7481349	Holsten et al.	Jan 2009	B2
7481824	Boudreaux et al.	Jan 2009	B2
7487899	Shelton, IV et al.	Feb 2009	B2
7490749	Schall et al.	Feb 2009	B2
7494039	Racenet et al.	Feb 2009	B2
7500979	Hueil et al.	Mar 2009	B2
7503474	Hillstead et al.	Mar 2009	B2
7506790	Shelton, IV	Mar 2009	B2
7506791	Omaits et al.	Mar 2009	B2
7510107	Timm et al.	Mar 2009	B2
7513408	Shelton, IV et al.	Apr 2009	B2
7517356	Heinrich	Apr 2009	B2
7537602	Whitman	May 2009	B2
7543729	Ivanko	Jun 2009	B2
7543730	Marczyk	Jun 2009	B1
7543731	Green et al.	Jun 2009	B2
7552854	Wixey et al.	Jun 2009	B2
7556185	Viola	Jul 2009	B2
7556186	Milliman	Jul 2009	B2
7559450	Wales et al.	Jul 2009	B2
7559452	Wales et al.	Jul 2009	B2
7559453	Heinrich et al.	Jul 2009	B2
7559937	de la Torre et al.	Jul 2009	B2
7565993	Milliman et al.	Jul 2009	B2
7568603	Shelton, IV et al.	Aug 2009	B2
7568604	Ehrenfels et al.	Aug 2009	B2
7571845	Viola	Aug 2009	B2
7575144	Ortiz et al.	Aug 2009	B2
7584880	Racenet et al.	Sep 2009	B2
7588174	Holsten et al.	Sep 2009	B2
7588175	Timm et al.	Sep 2009	B2
7588176	Timm et al.	Sep 2009	B2
7588177	Racenet	Sep 2009	B2
7597229	Boudreaux et al.	Oct 2009	B2
7597230	Racenet et al.	Oct 2009	B2
7600663	Green	Oct 2009	B2
7604150	Boudreaux	Oct 2009	B2
7604151	Hess et al.	Oct 2009	B2
7607557	Shelton, IV et al.	Oct 2009	B2
7611038	Racenet et al.	Nov 2009	B2
7617961	Viola	Nov 2009	B2
7624902	Marczyk et al.	Dec 2009	B2
7624903	Green et al.	Dec 2009	B2
7631793	Rethy et al.	Dec 2009	B2
7631794	Rethy et al.	Dec 2009	B2
7635073	Heinrich	Dec 2009	B2
7635074	Olson et al.	Dec 2009	B2
7635373	Ortiz	Dec 2009	B2
7637409	Marczyk	Dec 2009	B2
7637410	Marczyk	Dec 2009	B2
7641091	Olson et al.	Jan 2010	B2
7641093	Doll et al.	Jan 2010	B2
7641095	Viola	Jan 2010	B2
7644848	Swayze et al.	Jan 2010	B2
7646055	Marczyk	Jan 2010	B2
7651017	Ortiz et al.	Jan 2010	B2
7654431	Hueil et al.	Feb 2010	B2
7658311	Boudreaux	Feb 2010	B2
7658312	Vidal et al.	Feb 2010	B2
7665646	Prommersberger	Feb 2010	B2
7665647	Shelton, IV et al.	Feb 2010	B2
7669746	Shelton, IV	Mar 2010	B2
7670334	Hueil et al.	Mar 2010	B2
7673780	Shelton, IV et al.	Mar 2010	B2
7673781	Swayze et al.	Mar 2010	B2
7673782	Hess et al.	Mar 2010	B2
7673783	Morgan et al.	Mar 2010	B2
7678121	Knodel	Mar 2010	B1
7681772	Green et al.	Mar 2010	B2
7682367	Shah et al.	Mar 2010	B2
7682368	Bombard et al.	Mar 2010	B1
7690547	Racenet et al.	Apr 2010	B2
7694865	Scirica	Apr 2010	B2
7699205	Ivanko	Apr 2010	B2
7703653	Shah et al.	Apr 2010	B2
7721930	McKenna et al.	May 2010	B2
7721931	Shelton, IV et al.	May 2010	B2
7721933	Ehrenfels et al.	May 2010	B2
7721935	Racenet et al.	May 2010	B2
7726537	Olson et al.	Jun 2010	B2
7726538	Holsten et al.	Jun 2010	B2
7726539	Holsten et al.	Jun 2010	B2
7731072	Timm et al.	Jun 2010	B2
7735703	Morgan et al.	Jun 2010	B2
7740159	Shelton, IV et al.	Jun 2010	B2
7740160	Viola	Jun 2010	B2
7743960	Whitman et al.	Jun 2010	B2
7744628	Viola	Jun 2010	B2
7753245	Boudreaux et al.	Jul 2010	B2
7753248	Viola	Jul 2010	B2
7757924	Gerbi et al.	Jul 2010	B2
7757925	Viola et al.	Jul 2010	B2
7762445	Heinrich et al.	Jul 2010	B2
7766209	Baxter, III et al.	Aug 2010	B2
7766210	Shelton, IV et al.	Aug 2010	B2
7766924	Bombard et al.	Aug 2010	B1
7766928	Ezzat et al.	Aug 2010	B2
7770774	Mastri et al.	Aug 2010	B2
7770775	Shelton, IV et al.	Aug 2010	B2
7776060	Mooradian et al.	Aug 2010	B2
7780055	Scirica et al.	Aug 2010	B2
7784662	Wales et al.	Aug 2010	B2
7789283	Shah	Sep 2010	B2
7789889	Zubik et al.	Sep 2010	B2
7793812	Moore et al.	Sep 2010	B2
7793814	Racenet et al.	Sep 2010	B2
7794475	Hess et al.	Sep 2010	B2
7798385	Boyden et al.	Sep 2010	B2
7798386	Schell et al.	Sep 2010	B2
7799039	Shelton, IV et al.	Sep 2010	B2
7810690	Bilotti et al.	Oct 2010	B2
7810691	Boyden et al.	Oct 2010	B2
7810692	Hall et al.	Oct 2010	B2
7810693	Broehl et al.	Oct 2010	B2
7815090	Marczyk	Oct 2010	B2
7815091	Marczyk	Oct 2010	B2
7815092	Whitman et al.	Oct 2010	B2
7819296	Hueil et al.	Oct 2010	B2
7819297	Doll et al.	Oct 2010	B2
7819298	Hall et al.	Oct 2010	B2
7819299	Shelton, IV et al.	Oct 2010	B2
7819896	Racenet	Oct 2010	B2
7823760	Zemlok et al.	Nov 2010	B2
7823761	Boyden et al.	Nov 2010	B2
7824426	Racenet et al.	Nov 2010	B2
7828186	Wales	Nov 2010	B2
7828187	Green et al.	Nov 2010	B2
7828188	Jankowski	Nov 2010	B2
7828189	Holsten et al.	Nov 2010	B2
7832408	Shelton, IV et al.	Nov 2010	B2
7832611	Boyden et al.	Nov 2010	B2
7832612	Baxter, III et al.	Nov 2010	B2
7837079	Holsten et al.	Nov 2010	B2
7837081	Holsten et al.	Nov 2010	B2
7841503	Sonnenschein et al.	Nov 2010	B2
7845533	Marczyk et al.	Dec 2010	B2
7845534	Viola et al.	Dec 2010	B2
7845535	Scircia	Dec 2010	B2
7845537	Shelton, IV et al.	Dec 2010	B2
7845538	Whitman	Dec 2010	B2
7850703	Bombard et al.	Dec 2010	B2
7857183	Shelton, IV	Dec 2010	B2
7857184	Viola	Dec 2010	B2
7857185	Swayze et al.	Dec 2010	B2
7857186	Baxter, III et al.	Dec 2010	B2
7861906	Doll et al.	Jan 2011	B2
7861907	Green et al.	Jan 2011	B2
7866524	Krehel	Jan 2011	B2
7866525	Scirica	Jan 2011	B2
7866526	Green et al.	Jan 2011	B2
7866527	Hall et al.	Jan 2011	B2
7866528	Olson et al.	Jan 2011	B2
7870989	Viola et al.	Jan 2011	B2
7886952	Scirica et al.	Feb 2011	B2
7891532	Vlastri et al.	Feb 2011	B2
7891533	Green et al.	Feb 2011	B2
7891534	Wenchell et al.	Feb 2011	B2
7896214	Farascioni	Mar 2011	B2
7900805	Shelton, IV et al.	Mar 2011	B2
7901416	Nolan et al.	Mar 2011	B2
7905380	Shelton, IV et al.	Mar 2011	B2
7905381	Baxter, III et al.	Mar 2011	B2
7909039	Hur	Mar 2011	B2
7909220	Viola	Mar 2011	B2
7909221	Viola et al.	Mar 2011	B2
7909224	Prommersberger	Mar 2011	B2
7913891	Doll et al.	Mar 2011	B2
7913893	Mastri et al.	Mar 2011	B2
7914543	Roth et al.	Mar 2011	B2
7918230	Whitman et al.	Apr 2011	B2
7918276	Guignard et al.	Apr 2011	B2
7922061	Shelton, IV et al.	Apr 2011	B2
7922063	Zemlok et al.	Apr 2011	B2
7922064	Boyden et al.	Apr 2011	B2
7926691	Viola et al.	Apr 2011	B2
7926692	Racenet et al.	Apr 2011	B2
7934628	Wenchell et al.	May 2011	B2
7934630	Shelton, IV et al.	May 2011	B2
7934631	Balbierz et al.	May 2011	B2
7942300	Rethy et al.	May 2011	B2
7942303	Shah	May 2011	B2
7950560	Zemlok et al.	May 2011	B2
7950561	Aranyi	May 2011	B2
7950562	Beardsley et al.	May 2011	B2
7954682	Giordano et al.	Jun 2011	B2
7954683	Knodel et al.	Jun 2011	B1
7954684	Boudreaux	Jun 2011	B2
7954685	Viola	Jun 2011	B2
7954686	Baxter, III et al.	Jun 2011	B2
7954687	Zemlok et al.	Jun 2011	B2
7959051	Smith et al.	Jun 2011	B2
7963431	Scirica	Jun 2011	B2
7963432	Knodel et al.	Jun 2011	B2
7963433	Whitman et al.	Jun 2011	B2
7967178	Scirica et al.	Jun 2011	B2
7967179	Olson et al.	Jun 2011	B2
7967180	Scirica	Jun 2011	B2
7975894	Boyden et al.	Jul 2011	B2
7980443	Scheib et al.	Jul 2011	B2
7988026	Knodel et al.	Aug 2011	B2
7988027	Olson et al.	Aug 2011	B2
7988028	Farascioni et al.	Aug 2011	B2
7992758	Whitman et al.	Aug 2011	B2
7997468	Farascioni	Aug 2011	B2
7997469	Olson et al.	Aug 2011	B2
8002795	Beetel	Aug 2011	B2
8006885	Marczyk	Aug 2011	B2
8006887	Marczyk	Aug 2011	B2
8007505	Weller et al.	Aug 2011	B2
8007513	Nalagatla et al.	Aug 2011	B2
8011550	Aranyi et al.	Sep 2011	B2
8011551	Marczyk et al.	Sep 2011	B2
8011552	Ivanko	Sep 2011	B2
8011553	Mastri et al.	Sep 2011	B2
8011555	Tarinelli et al.	Sep 2011	B2
8012170	Whitman et al.	Sep 2011	B2
8015976	Shah	Sep 2011	B2
8016177	Bettuchi et al.	Sep 2011	B2
8016178	Olson et al.	Sep 2011	B2
8020742	Marczyk	Sep 2011	B2
8020743	Shelton, IV	Sep 2011	B2
8028882	Viola	Oct 2011	B2
8028883	Stopek	Oct 2011	B2
8028884	Sniffin et al.	Oct 2011	B2
8033438	Scirica	Oct 2011	B2
8033440	Wenchell et al.	Oct 2011	B2
8033441	Marczyk	Oct 2011	B2
8033442	Racenet et al.	Oct 2011	B2
8034077	Smith et al.	Oct 2011	B2
8038044	Viola	Oct 2011	B2
8038045	Bettuchi et al.	Oct 2011	B2
8052024	Viola et al.	Nov 2011	B2
8056787	Boudreaux et al.	Nov 2011	B2
8056788	Mastri et al.	Nov 2011	B2
8056791	Whitman	Nov 2011	B2
8061577	Racenet et al.	Nov 2011	B2
8066166	Demmy et al.	Nov 2011	B2
8070033	Milliman et al.	Dec 2011	B2
8070035	Holsten et al.	Dec 2011	B2
8074858	Marczyk	Dec 2011	B2
8074859	Kostrzewski	Dec 2011	B2
8074862	Shah	Dec 2011	B2
8083118	Milliman et al.	Dec 2011	B2
8083119	Prommersberger	Dec 2011	B2
8083120	Shelton, IV et al.	Dec 2011	B2
8087563	Milliman et al.	Jan 2012	B2
8091753	Viola	Jan 2012	B2
8091754	Ehrenfels et al.	Jan 2012	B2
8091756	Viola	Jan 2012	B2
8092493	Marczyk	Jan 2012	B2
8096459	Ortiz et al.	Jan 2012	B2
8096460	Blier et al.	Jan 2012	B2
8100309	Marczyk	Jan 2012	B2
8100310	Zemlok	Jan 2012	B2
8102008	Wells	Jan 2012	B2
8113406	Holsten et al.	Feb 2012	B2
8113407	Holsten et al.	Feb 2012	B2
8113408	Wenchell et al.	Feb 2012	B2
8113409	Cohen et al.	Feb 2012	B2
8113410	Hall et al.	Feb 2012	B2
8123101	Racenet et al.	Feb 2012	B2
8127975	Olson et al.	Mar 2012	B2
8127976	Scirica et al.	Mar 2012	B2
8132703	Milliman et al.	Mar 2012	B2
8132705	Viola et al.	Mar 2012	B2
8132706	Marczyk et al.	Mar 2012	B2
8136713	Hathaway et al.	Mar 2012	B2
8141762	Bedi et al.	Mar 2012	B2
8152041	Kostrzewski	Apr 2012	B2
8157148	Scirica	Apr 2012	B2
8157150	Viola et al.	Apr 2012	B2
8157151	Ingmanson et al.	Apr 2012	B2
8157152	Holsten et al.	Apr 2012	B2
8162197	Mastri et al.	Apr 2012	B2
8167185	Shelton, IV et al.	May 2012	B2
8167186	Racenet et al.	May 2012	B2
8172121	Krehel	May 2012	B2
8172124	Shelton, IV et al.	May 2012	B2
8181837	Roy	May 2012	B2
8186555	Shelton, IV et al.	May 2012	B2
8186557	Cohen et al.	May 2012	B2
8186558	Sapienza	May 2012	B2
8186559	Whitman	May 2012	B1
8186560	Hess et al.	May 2012	B2
8196795	Moore et al.	Jun 2012	B2
8196796	Shelton, IV et al.	Jun 2012	B2
8201721	Zemlok et al.	Jun 2012	B2
8205619	Shah et al.	Jun 2012	B2
8205780	Sorrentino et al.	Jun 2012	B2
8205781	Baxter, III et al.	Jun 2012	B2
8210412	Marczyk	Jul 2012	B2
8210416	Milliman et al.	Jul 2012	B2
8216236	Heinrich et al.	Jul 2012	B2
8220688	Laurent et al.	Jul 2012	B2
8220690	Hess et al.	Jul 2012	B2
8225979	Farascioni et al.	Jul 2012	B2
8231040	Zemlok et al.	Jul 2012	B2
8231041	Marczyk et al.	Jul 2012	B2
8235272	Nicholas et al.	Aug 2012	B2
8235273	Olson et al.	Aug 2012	B2
8235274	Cappola	Aug 2012	B2
8236010	Ortiz et al.	Aug 2012	B2
8240536	Marczyk	Aug 2012	B2
8240537	Marczyk	Aug 2012	B2
8241322	Whitman et al.	Aug 2012	B2
8245897	Tzakis et al.	Aug 2012	B2
8245898	Smith et al.	Aug 2012	B2
8245899	Swensgard et al.	Aug 2012	B2
8245901	Stopek	Aug 2012	B2
8252009	Weller et al.	Aug 2012	B2
8256653	Farascioni	Sep 2012	B2
8256654	Bettuchi et al.	Sep 2012	B2
8256655	Sniffin et al.	Sep 2012	B2
8256656	Milliman et al.	Sep 2012	B2
8267300	Boudreaux	Sep 2012	B2
8272551	Knodel et al.	Sep 2012	B2
8272553	Mastri et al.	Sep 2012	B2
8272554	Whitman et al.	Sep 2012	B2
8276594	Shah	Oct 2012	B2
8276801	Zemlok et al.	Oct 2012	B2
8281973	Wenchell et al.	Oct 2012	B2
8286847	Taylor	Oct 2012	B2
8286848	Wenchell et al.	Oct 2012	B2
8292146	Holsten et al.	Oct 2012	B2
8292147	Viola	Oct 2012	B2
8292148	Viola	Oct 2012	B2
8292149	Ivanko	Oct 2012	B2
8292150	Bryant	Oct 2012	B2
8292151	Viola	Oct 2012	B2
8292152	Milliman et al.	Oct 2012	B2
8292153	Jankowski	Oct 2012	B2
8292154	Marczyk	Oct 2012	B2
8292155	Shelton, IV et al.	Oct 2012	B2
8292156	Kostrzewski	Oct 2012	B2
8292158	Sapienza	Oct 2012	B2
8308040	Huang et al.	Nov 2012	B2
8308041	Kostrzewski	Nov 2012	B2
8308042	Aranyi	Nov 2012	B2
8308043	Bindra et al.	Nov 2012	B2
8308044	Viola	Nov 2012	B2
8308046	Prommersberger	Nov 2012	B2
8317070	Hueil et al.	Nov 2012	B2
8317071	Knodel	Nov 2012	B1
8322455	Shelton, IV et al.	Dec 2012	B2
8322589	Boudreaux	Dec 2012	B2
8328061	Kasvikis	Dec 2012	B2
8328065	Shah	Dec 2012	B2
8333313	Boudreaux et al.	Dec 2012	B2
8336751	Scirica	Dec 2012	B2
8336753	Olson et al.	Dec 2012	B2
8336754	Cappola et al.	Dec 2012	B2
8342377	Milliman et al.	Jan 2013	B2
8342378	Marczyk et al.	Jan 2013	B2
8342379	Whitman et al.	Jan 2013	B2
8342380	Viola	Jan 2013	B2
8348123	Scirica et al.	Jan 2013	B2
8348124	Scirica	Jan 2013	B2
8348125	Viola et al.	Jan 2013	B2
8348126	Olson et al.	Jan 2013	B2
8348127	Marczyk	Jan 2013	B2
8348129	Bedi et al.	Jan 2013	B2
8348130	Shah et al.	Jan 2013	B2
8348131	Omaits et al.	Jan 2013	B2
8353437	Boudreaux	Jan 2013	B2
8353440	Whitman et al.	Jan 2013	B2
8356740	Knodel	Jan 2013	B1
8357174	Roth et al.	Jan 2013	B2
8360294	Scirica	Jan 2013	B2
8360297	Shelton, IV et al.	Jan 2013	B2
8360298	Farascioni et al.	Jan 2013	B2
8360299	Zemlok et al.	Jan 2013	B2
8365971	Knodel	Feb 2013	B1
8365972	Aranyi et al.	Feb 2013	B2
8365973	White et al.	Feb 2013	B1
8365976	Hess et al.	Feb 2013	B2
8371491	Huitema et al.	Feb 2013	B2
8371492	Aranyi et al.	Feb 2013	B2
8371493	Aranyi et al.	Feb 2013	B2
8381828	Whitman et al.	Feb 2013	B2
8381961	Holsten et al.	Feb 2013	B2
8387849	Buesseler et al.	Mar 2013	B2
8387850	Hathaway et al.	Mar 2013	B2
8388652	Viola	Mar 2013	B2
8393513	Jankowski	Mar 2013	B2
8393514	Shelton, IV et al.	Mar 2013	B2
8393516	Kostrzewski	Mar 2013	B2
8397971	Yates et al.	Mar 2013	B2
8397972	Kostrzewski	Mar 2013	B2
8403195	Beardsley et al.	Mar 2013	B2
8403196	Beardsley et al.	Mar 2013	B2
8403197	Vidal et al.	Mar 2013	B2
8403198	Sorrentino et al.	Mar 2013	B2
8403956	Thompson et al.	Mar 2013	B1
8408439	Huang et al.	Apr 2013	B2
8408440	Olson et al.	Apr 2013	B2
8408442	Racenet et al.	Apr 2013	B2
8413868	Cappola	Apr 2013	B2
8413869	Heinrich	Apr 2013	B2
8413871	Racenet et al.	Apr 2013	B2
8418904	Wenchell et al.	Apr 2013	B2
8418905	Milliman	Apr 2013	B2
8418906	Farascioni et al.	Apr 2013	B2
8418907	Johnson et al.	Apr 2013	B2
8418908	Beardsley	Apr 2013	B1
8419768	Marczyk	Apr 2013	B2
8424735	Viola et al.	Apr 2013	B2
8424736	Scirica et al.	Apr 2013	B2
8424737	Scirica	Apr 2013	B2
8424739	Racenet et al.	Apr 2013	B2
8424740	Shelton, IV et al.	Apr 2013	B2
8439244	Holcomb et al.	May 2013	B2
8439245	Knodel et al.	May 2013	B2
8439246	Knodel	May 2013	B1
8444036	Shelton, IV	May 2013	B2
8444037	Nicholas et al.	May 2013	B2
8444038	Farascioni et al.	May 2013	B2
8448832	Viola et al.	May 2013	B2
8453652	Stopek	Jun 2013	B2
8453905	Holcomb et al.	Jun 2013	B2
8453906	Huang et al.	Jun 2013	B2
8453907	Laurent et al.	Jun 2013	B2
8453908	Bedi et al.	Jun 2013	B2
8453909	Olson et al.	Jun 2013	B2
8453910	Bettuchi et al.	Jun 2013	B2
8453912	Mastri et al.	Jun 2013	B2
8453913	Milliman	Jun 2013	B2
8453914	Laurent et al.	Jun 2013	B2
8459520	Giordano et al.	Jun 2013	B2
8459521	Zemlok et al.	Jun 2013	B2
8459522	Marczyk	Jun 2013	B2
8459523	Whitman	Jun 2013	B2
8459524	Pribanic et al.	Jun 2013	B2
8459525	Yates et al.	Jun 2013	B2
8469252	Holcomb et al.	Jun 2013	B2
8474677	Woodard, Jr. et al.	Jul 2013	B2
8479967	Marczyk	Jul 2013	B2
8479968	Hodgkinson et al.	Jul 2013	B2
8479969	Shelton, IV	Jul 2013	B2
8496152	Viola	Jul 2013	B2
8496156	Sniffin et al.	Jul 2013	B2
8496683	Prommersberger et al.	Jul 2013	B2
8499993	Shelton, IV et al.	Aug 2013	B2
8505799	Viola et al.	Aug 2013	B2
8505802	Viola et al.	Aug 2013	B2
8511575	Cok	Aug 2013	B2
8512359	Whitman et al.	Aug 2013	B2
8517241	Nicholas et al.	Aug 2013	B2
8517244	Shelton, IV et al.	Aug 2013	B2
8523043	Ullrich et al.	Sep 2013	B2
9289211	Williams et al.	Mar 2016	B2
9566064	Williams	Feb 2017	B2
9888921	Williams	Feb 2018	B2
10182815	Williams et al.	Jan 2019	B2
20040108357	Milliman et al.	Jun 2004	A1
20040199180	Knodel et al.	Oct 2004	A1
20040199181	Knodel et al.	Oct 2004	A1
20040232201	Wenchell et al.	Nov 2004	A1
20040243151	Demmy et al.	Dec 2004	A1
20040267310	Racenet et al.	Dec 2004	A1
20050103819	Racenet et al.	May 2005	A1
20050119669	Demmy	Jun 2005	A1
20050189397	Jankowski	Sep 2005	A1
20050216055	Scirica et al.	Sep 2005	A1
20060049229	Milliman et al.	Mar 2006	A1
20060151569	Ehrenfels et al.	Jul 2006	A1
20060180634	Shelton et al.	Aug 2006	A1
20060289602	Wales et al.	Dec 2006	A1
20070027469	Smith et al.	Feb 2007	A1
20070073341	Smith et al.	Mar 2007	A1
20070084897	Shelton et al.	Apr 2007	A1
20070084899	Taylor	Apr 2007	A1
20070102472	Shelton	May 2007	A1
20070106317	Shelton et al.	May 2007	A1
20070119901	Ehrenfels et al.	May 2007	A1
20070145096	Viola et al.	Jun 2007	A1
20070170225	Shelton et al.	Jul 2007	A1
20070175949	Shelton et al.	Aug 2007	A1
20070175950	Shelton et al.	Aug 2007	A1
20070175951	Shelton et al.	Aug 2007	A1
20070175955	Shelton et al.	Aug 2007	A1
20070179528	Soltz et al.	Aug 2007	A1
20070194079	Hueil et al.	Aug 2007	A1
20070194081	Hueil et al.	Aug 2007	A1
20070194082	Morgan et al.	Aug 2007	A1
20070221700	Ortiz et al.	Sep 2007	A1
20070295780	Shelton et al.	Dec 2007	A1
20080029570	Shelton et al.	Feb 2008	A1
20080029573	Shelton et al.	Feb 2008	A1
20080029574	Shelton et al.	Feb 2008	A1
20080029575	Shelton et al.	Feb 2008	A1
20080078800	Hess et al.	Apr 2008	A1
20080078802	Hess et al.	Apr 2008	A1
20080078803	Shelton et al.	Apr 2008	A1
20080078804	Shelton et al.	Apr 2008	A1
20080078806	Omaits et al.	Apr 2008	A1
20080078808	Hess et al.	Apr 2008	A1
20080110961	Voegele et al.	May 2008	A1
20080149685	Smith et al.	Jun 2008	A1
20080169328	Shelton	Jul 2008	A1
20080169329	Shelton et al.	Jul 2008	A1
20080169330	Shelton et al.	Jul 2008	A1
20080169331	Shelton et al.	Jul 2008	A1
20080169332	Shelton et al.	Jul 2008	A1
20080169333	Shelton et al.	Jul 2008	A1
20080287987	Boyden et al.	Nov 2008	A1
20080296344	Cropper et al.	Dec 2008	A1
20080296346	Shelton, IV et al.	Dec 2008	A1
20080308602	Timm et al.	Dec 2008	A1
20080308603	Shelton et al.	Dec 2008	A1
20090001121	Hess et al.	Jan 2009	A1
20090001124	Hess et al.	Jan 2009	A1
20090001130	Hess et al.	Jan 2009	A1
20090005808	Hess et al.	Jan 2009	A1
20090065549	Viola	Mar 2009	A1
20090078739	Viola	Mar 2009	A1
20090090763	Zemlok et al.	Apr 2009	A1
20090090766	Knodel	Apr 2009	A1
20090209946	Swayze et al.	Aug 2009	A1
20090209990	Yates et al.	Aug 2009	A1
20090236395	Scirica	Sep 2009	A1
20090242610	Shelton, IV et al.	Oct 2009	A1
20090255974	Viola	Oct 2009	A1
20090272787	Scirica	Nov 2009	A1
20090277946	Marczyk	Nov 2009	A1
20090277949	Viola et al.	Nov 2009	A1
20090283568	Racenet et al.	Nov 2009	A1
20090306708	Shah	Dec 2009	A1
20090308907	Nalagatla et al.	Dec 2009	A1
20100012703	Calabrese et al.	Jan 2010	A1
20100012704	Tarinelli Racenet et al.	Jan 2010	A1
20100069942	Shelton, IV	Mar 2010	A1
20100072254	Aranyi et al.	Mar 2010	A1
20100076429	Heinrich	Mar 2010	A1
20100076459	Farascioni	Mar 2010	A1
20100089970	Smith et al.	Apr 2010	A1
20100127041	Morgan et al.	May 2010	A1
20100127042	Shelton, IV	May 2010	A1
20100133317	Shelton, IV et al.	Jun 2010	A1
20100133318	Boudreaux	Jun 2010	A1
20100147921	Olson	Jun 2010	A1
20100147922	Olson	Jun 2010	A1
20100155453	Bombard et al.	Jun 2010	A1
20100170931	Viola	Jul 2010	A1
20100193566	Scheib et al.	Aug 2010	A1
20100213241	Bedi	Aug 2010	A1
20100224668	Fontayne et al.	Sep 2010	A1
20100230468	Viola	Sep 2010	A1
20100237130	Scirica	Sep 2010	A1
20100243709	Hess et al.	Sep 2010	A1
20100249802	May et al.	Sep 2010	A1
20100252611	Ezzat et al.	Oct 2010	A1
20100252612	Viola	Oct 2010	A1
20100264192	Marczyk	Oct 2010	A1
20100264193	Huang et al.	Oct 2010	A1
20100264194	Huang et al.	Oct 2010	A1
20100294828	Bindra et al.	Nov 2010	A1
20100294829	Giordano et al.	Nov 2010	A1
20100301095	Shelton, IV et al.	Dec 2010	A1
20100305552	Shelton, IV et al.	Dec 2010	A1
20100308100	Boudreaux	Dec 2010	A1
20100320252	Viola et al.	Dec 2010	A1
20100320254	Zemlok et al.	Dec 2010	A1
20110006099	Hall et al.	Jan 2011	A1
20110006101	Hall et al.	Jan 2011	A1
20110006103	Laurent et al.	Jan 2011	A1
20110011914	Baxter, III et al.	Jan 2011	A1
20110011915	Shelton, IV	Jan 2011	A1
20110017801	Zemlok et al.	Jan 2011	A1
20110024477	Hall	Feb 2011	A1
20110024478	Shelton, IV	Feb 2011	A1
20110036887	Zemlok et al.	Feb 2011	A1
20110036888	Pribanic et al.	Feb 2011	A1
20110036890	Ma	Feb 2011	A1
20110036891	Zemlok et al.	Feb 2011	A1
20110036892	Marczyk et al.	Feb 2011	A1
20110036895	Marczyk et al.	Feb 2011	A1
20110042439	Johnson et al.	Feb 2011	A1
20110042441	Shelton, IV et al.	Feb 2011	A1
20110062213	Scirica et al.	Mar 2011	A1
20110068145	Bedi et al.	Mar 2011	A1
20110068148	Hall et al.	Mar 2011	A1
20110084114	Marczyk et al.	Apr 2011	A1
20110084115	Bedi et al.	Apr 2011	A1
20110087276	Bedi et al.	Apr 2011	A1
20110089221	Masiakos et al.	Apr 2011	A1
20110095067	Ohdaira	Apr 2011	A1
20110101067	Johnson et al.	May 2011	A1
20110101069	Bombard et al.	May 2011	A1
20110108603	Racenet et al.	May 2011	A1
20110114702	Farascioni	May 2011	A1
20110121049	Malinouskas et al.	May 2011	A1
20110132961	Whitman et al.	Jun 2011	A1
20110132963	Giordano et al.	Jun 2011	A1
20110132964	Weisenburgh, II et al.	Jun 2011	A1
20110132965	Moore et al.	Jun 2011	A1
20110139851	McCuen	Jun 2011	A1
20110144640	Heinrich et al.	Jun 2011	A1
20110147433	Shelton, IV et al.	Jun 2011	A1
20110147434	Hueil et al.	Jun 2011	A1
20110155781	Swensgard et al.	Jun 2011	A1
20110155784	Shelton, IV et al.	Jun 2011	A1
20110155786	Shelton, IV	Jun 2011	A1
20110155787	Baxter, III et al.	Jun 2011	A1
20110155788	Hillstead et al.	Jun 2011	A1
20110163146	Ortiz et al.	Jul 2011	A1
20110163147	Laurent et al.	Jul 2011	A1
20110163149	Viola	Jul 2011	A1
20110163150	Farascioni	Jul 2011	A1
20110168757	Viola et al.	Jul 2011	A1
20110168760	Viola et al.	Jul 2011	A1
20110174862	Shelton, IV et al.	Jul 2011	A1
20110174863	Shelton, IV et al.	Jul 2011	A1
20110180585	Czernik et al.	Jul 2011	A1
20110186614	Kasvikis	Aug 2011	A1
20110192881	Balbierz et al.	Aug 2011	A1
20110192882	Hess et al.	Aug 2011	A1
20110192883	Whitman et al.	Aug 2011	A1
20110198385	Whitman et al.	Aug 2011	A1
20110198386	Viola	Aug 2011	A1
20110204119	McCuen	Aug 2011	A1
20110204120	Crainich	Aug 2011	A1
20110210157	Knodel et al.	Sep 2011	A1
20110215132	Aranyi et al.	Sep 2011	A1
20110215133	Aranyi	Sep 2011	A1
20110226837	Baxter, III et al.	Sep 2011	A1
20110233258	Boudreaux	Sep 2011	A1
20110233259	Olson	Sep 2011	A1
20110240713	Scirica et al.	Oct 2011	A1
20110240714	Whitman et al.	Oct 2011	A1
20110253765	Nicholas et al.	Oct 2011	A1
20110257679	Ishitsuki et al.	Oct 2011	A1
20110272448	Scirica et al.	Nov 2011	A1
20110278343	Knodel et al.	Nov 2011	A1
20110288573	Yates et al.	Nov 2011	A1
20110290851	Shelton, IV	Dec 2011	A1
20110290853	Shelton, IV et al.	Dec 2011	A1
20110290854	Timm et al.	Dec 2011	A1
20110290855	Moore et al.	Dec 2011	A1
20110290856	Shelton, IV et al.	Dec 2011	A1
20110295269	Swensgard et al.	Dec 2011	A1
20110309127	Knodel et al.	Dec 2011	A1
20110309128	Okoniewski	Dec 2011	A1
20120012636	Beckman et al.	Jan 2012	A1
20120016362	Heinrich et al.	Jan 2012	A1
20120037683	Lee	Feb 2012	A1
20120053406	Conlon et al.	Mar 2012	A1
20120055972	Marczyk	Mar 2012	A1
20120061446	Knodel et al.	Mar 2012	A1
20120061450	Kostrzewski	Mar 2012	A1
20120071866	Kerr et al.	Mar 2012	A1
20120074196	Shelton, IV et al.	Mar 2012	A1
20120074200	Schmid et al.	Mar 2012	A1
20120080474	Farascioni	Apr 2012	A1
20120080475	Smith et al.	Apr 2012	A1
20120080476	Whitman et al.	Apr 2012	A1
20120080477	Leimbach et al.	Apr 2012	A1
20120080478	Morgan et al.	Apr 2012	A1
20120080479	Shelton, IV	Apr 2012	A1
20120080480	Woodard, Jr. et al.	Apr 2012	A1
20120080481	Widenhouse et al.	Apr 2012	A1
20120080482	Schall et al.	Apr 2012	A1
20120080483	Riestenberg et al.	Apr 2012	A1
20120080484	Morgan et al.	Apr 2012	A1
20120080485	Woodard, Jr. et al.	Apr 2012	A1
20120080486	Woodard, Jr. et al.	Apr 2012	A1
20120080488	Shelton, IV et al.	Apr 2012	A1
20120080489	Shelton, IV et al.	Apr 2012	A1
20120080490	Shelton, IV et al.	Apr 2012	A1
20120080491	Shelton, IV et al.	Apr 2012	A1
20120080493	Shelton, IV et al.	Apr 2012	A1
20120080494	Thompson et al.	Apr 2012	A1
20120080495	Holcomb et al.	Apr 2012	A1
20120080496	Schall et al.	Apr 2012	A1
20120080498	Shelton, IV et al.	Apr 2012	A1
20120080499	Schall et al.	Apr 2012	A1
20120080500	Morgan et al.	Apr 2012	A1
20120080501	Morgan et al.	Apr 2012	A1
20120080502	Morgan et al.	Apr 2012	A1
20120080503	Woodard, Jr. et al.	Apr 2012	A1
20120091183	Manoux et al.	Apr 2012	A1
20120100200	Belcheva et al.	Apr 2012	A1
20120138659	Marczyk et al.	Jun 2012	A1
20120138660	Shelton, IV	Jun 2012	A1
20120150176	Weizman	Jun 2012	A1
20120160892	Scirica	Jun 2012	A1
20120168484	Scirica et al.	Jul 2012	A1
20120168486	Ingmanson et al.	Jul 2012	A1
20120175399	Shelton et al.	Jul 2012	A1
20120181322	Whitman et al.	Jul 2012	A1
20120187179	Gleiman	Jul 2012	A1
20120193390	Racenet et al.	Aug 2012	A1
20120193394	Holcomb et al.	Aug 2012	A1
20120193399	Holcomb et al.	Aug 2012	A1
20120199630	Shelton, IV	Aug 2012	A1
20120199631	Shelton, IV et al.	Aug 2012	A1
20120199632	Spivey et al.	Aug 2012	A1
20120199633	Shelton, IV et al.	Aug 2012	A1
20120203247	Shelton, IV et al.	Aug 2012	A1
20120205421	Shelton, IV	Aug 2012	A1
20120211542	Racenet	Aug 2012	A1
20120217282	Beetel	Aug 2012	A1
20120217283	Cohen et al.	Aug 2012	A1
20120223121	Viola et al.	Sep 2012	A1
20120223122	Roy	Sep 2012	A1
20120223123	Baxter, III et al.	Sep 2012	A1
20120228358	Zemlok et al.	Sep 2012	A1
20120234893	Schuckmann et al.	Sep 2012	A1
20120234895	O'Connor et al.	Sep 2012	A1
20120234896	Ellerhorst et al.	Sep 2012	A1
20120234897	Shelton, IV et al.	Sep 2012	A1
20120234899	Scheib et al.	Sep 2012	A1
20120234900	Swayze	Sep 2012	A1
20120239009	Mollere et al.	Sep 2012	A1
20120241491	Aldridge et al.	Sep 2012	A1
20120241492	Shelton, IV et al.	Sep 2012	A1
20120241493	Baxter, III et al.	Sep 2012	A1
20120241496	Mandakolathur Vasudevan et al.	Sep 2012	A1
20120241497	Mandakolathur Vasudevan et al.	Sep 2012	A1
20120241498	Gonzalez et al.	Sep 2012	A1
20120241499	Baxter, III et al.	Sep 2012	A1
20120241500	Timmer et al.	Sep 2012	A1
20120241501	Swayze et al.	Sep 2012	A1
20120241502	Aldridge et al.	Sep 2012	A1
20120241503	Baxter, III et al.	Sep 2012	A1
20120241504	Soltz et al.	Sep 2012	A1
20120241505	Alexander, III et al.	Sep 2012	A1
20120248169	Widenhouse et al.	Oct 2012	A1
20120248170	Marczyk	Oct 2012	A1
20120255985	Ma et al.	Oct 2012	A1
20120255986	Petty et al.	Oct 2012	A1
20120273546	Whitman et al.	Nov 2012	A1
20120273547	Hodgkinson et al.	Nov 2012	A1
20120273550	Scirica	Nov 2012	A1
20120286019	Hueil et al.	Nov 2012	A1
20120286020	Smith et al.	Nov 2012	A1
20120286021	Kostrzewski	Nov 2012	A1
20120286022	Olson et al.	Nov 2012	A1
20120292369	Munro, III et al.	Nov 2012	A1
20120298719	Shelton, IV et al.	Nov 2012	A1
20120298722	Hess et al.	Nov 2012	A1
20120312858	Patankar et al.	Dec 2012	A1
20120312859	Gupta et al.	Dec 2012	A1
20120312860	Ming et al.	Dec 2012	A1
20120312861	Gurumurthy et al.	Dec 2012	A1
20120318842	Anim et al.	Dec 2012	A1
20120318843	Henderson et al.	Dec 2012	A1
20120318844	Shelton, IV et al.	Dec 2012	A1
20120318846	Wazer et al.	Dec 2012	A1
20120318847	Zemlok et al.	Dec 2012	A1
20120325891	Farascioni et al.	Dec 2012	A1
20120325893	Pastorelli et al.	Dec 2012	A1
20130001270	Kostrzewski	Jan 2013	A1
20130008937	Viola	Jan 2013	A1
20130012983	Kleyman	Jan 2013	A1
20130015231	Kostrzewski	Jan 2013	A1
20130015233	Viola	Jan 2013	A1
20130020374	Ivanko	Jan 2013	A1
20130020375	Shelton, IV et al.	Jan 2013	A1
20130020376	Shelton, IV et al.	Jan 2013	A1
20130026208	Shelton, IV et al.	Jan 2013	A1
20130026210	Shelton, IV et al.	Jan 2013	A1
20130032626	Smith et al.	Feb 2013	A1
20130032627	Viola	Feb 2013	A1
20130032629	Viola	Feb 2013	A1
20130037594	Dhakad et al.	Feb 2013	A1
20130037595	Gupta et al.	Feb 2013	A1
20130037596	Bear et al.	Feb 2013	A1
20130037597	Katre et al.	Feb 2013	A1
20130037598	Marczyk	Feb 2013	A1
20130037600	(Prommersberger) Stopek et al.	Feb 2013	A1
20130041406	Bear et al.	Feb 2013	A1
20130048697	Shelton, IV et al.	Feb 2013	A1
20130056518	Swensgard	Mar 2013	A1
20130056520	Swensgard	Mar 2013	A1
20130056521	Swensgard	Mar 2013	A1
20130056522	Swensgard	Mar 2013	A1
20130062391	Boudreaux et al.	Mar 2013	A1
20130062393	Bruewer et al.	Mar 2013	A1
20130062394	Smith et al.	Mar 2013	A1
20130068815	Bruewer et al.	Mar 2013	A1
20130068816	Mandakolathur Vasudevan et al.	Mar 2013	A1
20130068818	Kasvikis	Mar 2013	A1
20130068820	Miller et al.	Mar 2013	A1
20130068821	Huitema et al.	Mar 2013	A1
20130075443	Giordano et al.	Mar 2013	A1
20130075444	Cappola et al.	Mar 2013	A1
20130075445	Balek et al.	Mar 2013	A1
20130075446	Wang et al.	Mar 2013	A1
20130075447	Weisenburgh, II et al.	Mar 2013	A1
20130075448	Schmid et al.	Mar 2013	A1
20130075449	Schmid et al.	Mar 2013	A1
20130075450	Schmid et al.	Mar 2013	A1
20130075451	Balek et al.	Mar 2013	A1
20130082086	Hueil et al.	Apr 2013	A1
20130087597	Shelton, IV et al.	Apr 2013	A1
20130087599	Krumanaker et al.	Apr 2013	A1
20130087600	Scirica	Apr 2013	A1
20130087601	Farascioni	Apr 2013	A1
20130087602	Olson et al.	Apr 2013	A1
20130087603	Viola	Apr 2013	A1
20130092717	Marczyk et al.	Apr 2013	A1
20130098964	Smith et al.	Apr 2013	A1
20130098965	Kostrzewski et al.	Apr 2013	A1
20130098966	Kostrzewski et al.	Apr 2013	A1
20130098968	Aranyi et al.	Apr 2013	A1
20130098969	Scirica et al.	Apr 2013	A1
20130098970	Racenet et al.	Apr 2013	A1
20130105545	Burbank	May 2013	A1
20130105548	Hodgkinson et al.	May 2013	A1
20130105549	Holsten et al.	May 2013	A1
20130105550	Zemlok et al.	May 2013	A1
20130105552	Weir et al.	May 2013	A1
20130105553	(Tarinelli) Racenet et al.	May 2013	A1
20130112729	Beardsley et al.	May 2013	A1
20130112730	Whitman et al.	May 2013	A1
20130112731	Hodgkinson	May 2013	A1
20130112732	Aranyi et al.	May 2013	A1
20130112733	Aranyi et al.	May 2013	A1
20130112734	Aranyi et al.	May 2013	A1
20130119109	Farascioni et al.	May 2013	A1
20130119110	Scirica	May 2013	A1
20130126581	Yates et al.	May 2013	A1
20130126582	Shelton, IV et al.	May 2013	A1
20130126583	Hueil et al.	May 2013	A1
20130126586	Zhang et al.	May 2013	A1
20130140342	Milliman et al.	Jun 2013	A1
20130140343	Knodel	Jun 2013	A1
20130144333	Viola	Jun 2013	A1
20140263545	Williams et al.	Sep 2014	A1
20140263559	Williams et al.	Sep 2014	A1
20140263566	Williams et al.	Sep 2014	A1
20140263567	Williams et al.	Sep 2014	A1
20140263568	Williams et al.	Sep 2014	A1

Foreign Referenced Citations (79)

Number	Date	Country
198654765	Sep 1986	AU
2002300129	Jun 2005	AU
2744824	Apr 1978	DE
2903159	Jul 1980	DE
3114135	Oct 1982	DE
4213426	Oct 1992	DE
4300307	Jul 1994	DE
0041022	Dec 1981	EP
0136950	Apr 1985	EP
0140552	May 1985	EP
0156774	Oct 1985	EP
0213817	Mar 1987	EP
0216532	Apr 1987	EP
0220029	Apr 1987	EP
0273468	Jul 1988	EP
0324166	Jul 1989	EP
0324635	Jul 1989	EP
0324637	Jul 1989	EP
0324638	Jul 1989	EP
0365153	Apr 1990	EP
0369324	May 1990	EP
0373762	Jun 1990	EP
0380025	Aug 1990	EP
0399701	Nov 1990	EP
0449394	Oct 1991	EP
0484677	May 1992	EP
0489436	Jun 1992	EP
0503662	Sep 1992	EP
0514139	Nov 1992	EP
0536903	Apr 1993	EP
0537572	Apr 1993	EP
0539762	May 1993	EP
0545029	Jun 1993	EP
0552050	Jul 1993	EP
0552423	Jul 1993	EP
0579038	Jan 1994	EP
0589306	Mar 1994	EP
0591946	Apr 1994	EP
0592243	Apr 1994	EP
0593920	Apr 1994	EP
0598202	May 1994	EP
0598579	May 1994	EP
0600182	Jun 1994	EP
0621006	Oct 1994	EP
0621009	Oct 1994	EP
0648476	Apr 1995	EP
0656188	Jun 1995	EP
0666057	Aug 1995	EP
0705571	Apr 1996	EP
0760230	Mar 1997	EP
2090233	Aug 2009	EP
2090245	Aug 2009	EP
2090247	Aug 2009	EP
2236098	Oct 2010	EP
2329773	Jun 2011	EP
2586382	May 2013	EP
2653114	Oct 2013	EP
2542188	Sep 1984	FR
2660851	Oct 1991	FR
2681775	Apr 1993	FR
1352554	May 1974	GB
1452185	Oct 1976	GB
1555455	Nov 1979	GB
2048685	Dec 1980	GB
2070499	Sep 1981	GB
2141066	Dec 1984	GB
2165559	Apr 1986	GB
51149985	Dec 1976	JP
2001087272	Apr 2001	JP
659146	Apr 1979	SU
728848	Apr 1980	SU
980703	Dec 1982	SU
990220	Jan 1983	SU
2008302247	Jul 1983	WO
8910094	Nov 1989	WO
9210976	Jul 1992	WO
9308754	May 1993	WO
9314706	Aug 1993	WO
2004032760	Apr 2004	WO

Non-Patent Literature Citations (13)

Entry
European Search Report dated Jul. 24, 2014 issued in European Appln. No. EP 14 15 9099.
European Search Report dated Jul. 25, 2014 issued in European Appln. No. EP 14 15 9037.
European Search Report dated Jul. 25, 2014 issued in European Appln. No. EP 14 15 9073.
European Search Report dated Jul. 25, 2014 issued in European Appln. No. EP 14 15 9075.
European Search Report dated Jul. 29, 2014 issued in European Appln. No. EP 14 15 9118.
Partial European Search Report dated Aug. 18, 2014 issued in European Appln. No. EP 14 15 9032.
European Office Action dated Jun. 22, 2015, issued in European Application No. 14159075.
European Office Action dated Nov. 16, 2015, issued in EP Application No. 14 159 073.
European Office Action dated Feb. 24, 2016, issued in EP Application No. 14159118.
Chinese Office Action dated Mar. 1, 2017, issued in Chinese Application No. 201410093135.
Chinese Office Action dated Mar. 14, 2017, issued in CN Application No. 201410093286.
Chinese Office Action dated Mar. 14, 2017, issued in CN Application No. 2014100932839.
Chinese Office Action dated Dec. 12, 2017, issued in CN Application No. 2014100932839.

Related Publications (1)

	Number	Date	Country
	20190150919 A1	May 2019	US

Provisional Applications (1)

	Number	Date	Country
	61779873	Mar 2013	US

Continuations (2)

	Number	Date	Country
Parent	15043638	Feb 2016	US
Child	16251280		US
Parent	13923970	Jun 2013	US
Child	15043638		US

Surgical stapling apparatus

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