Device and method of treating heart valve malfunction

Information

  • Patent Grant
  • 10159571
  • Patent Number
    10,159,571
  • Date Filed
    Thursday, August 15, 2013
    11 years ago
  • Date Issued
    Tuesday, December 25, 2018
    5 years ago
Abstract
An assembly and method for treating heart valve malfunction including mitral regurgitation wherein an elongated chord is movably disposed within an introductory sheath and an anchor is secured to a distal end thereof. The sheath and the chord are introduced into the heart chamber and penetrate and pass through the anterior mitral valve leaflet and preferably through the mitral valve orifice. The sheath and the chord are then extended transversely across the heart chamber and the distal end of the chord is anchored to an opposing portion of the heart wall. The sheath is withdrawn back along the length of the anchored chord through the anterior mitral valve leaflet and the proximal end of the chord is secured to the valve leaflet. The chord is secured under sufficient tension to maintain an intended positioning of the valve leaflet to overcome mitral regurgitation.
Description
BACKGROUND OF THE INVENTION

Field of the Invention


The present invention is directed to an instrument assembly and method of use and application in the treatment of heart valve malfunction. In more specific terms the instrument assembly is specifically adapted to treat mitral regurgitation by means of a direct entry of the instrument through the atrial wall rather than through the vascular system, in order to apply sufficient tension to a prolapsing leaflet, including the anterior leaflet and/or the posterior leaflet of the mitral valve, in order to overcome mitral regurgitation.


Description of the Related Art


The human heart is a four chambered pump that moves blood efficiently through the vascular system. During normal operation, blood enters the heart through the vena cava and flows into the right atrium. Thereafter, blood flows from the right atrium through the tricuspid valve and into the right ventricle. Upon contraction of the right ventricle, blood is forced through the pulmonic valve and into the lungs for oxygenation. The oxygenated blood returns from the lungs and enters the heart through the left atrium and passes through the mitral valve into the left ventricle. Upon contraction of the left ventricle the blood therein flows through the aortic valve and into the aorta and throughout the vascular system.


The mitral valve is disposed in flow regulating communication between the left atrium and the left ventricle. It is composed of two valve leaflets, the mitral valve annulus, which forms a ring that supports the valve leaflets; papillary muscles, which tether the valve leaflets to the left ventricle wall, by preventing them from prolapsing back into the left atrium. Chordae tendineae serve to connect the mitral valve leaflets to the papillary muscles thereby further preventing the leaflets from prolapsing back into the left atrium. A dysfunction of any of these components of the mitral valve can cause “mitral regurgitation”. Mitral regurgitation is a disorder of the heart in which the mitral valve does not close properly when the heart pumps out blood. This results in abnormal leaking of blood from the left ventricle back into the left atrium, through the mitral valve, when the left ventricle contracts and is a condition known as “mitral regurgitation”. It is generally recognized in the medical profession that mitral regurgitation is the second most common form of valvular heart disease.


As generally set forth above, when properly functioning, the anterior and posterior valve leaflets of the mitral valve overlap during contraction of the left ventricle and prevent blood from flowing back into the left atrium. This overlap of the 2 leaflets leaning upon each other is called the coaptation and absorbs most of the strain on the mitral apparatus during the ventricular contraction. However, when the mitral valve malfunctions, due to various cardiac diseases, the leaflets are no longer coapting resulting in the mitral valve remaining partially open during ventricular contraction. In turn this allows the “regurgitation” of the blood back into the left atrium, as generally set forth above. When the mitral valve does not close hermetically during the ventricular contraction, the aforementioned back flow of blood to the atrium and the pulmonary vasculature, results in a deleterious condition. More specifically, this condition increases the work load to the heart and may lead to heart failure.


Methods of treating conditions relating to the malfunctioning of the heart valve specifically including valve incompetencies, mitral valve leakage and other heart failure conditions may be in various stages of development, such as the extending of an elongate member transverse across a corresponding or affected heart chamber. Each end of the elongate member extends through a wall of the heart such as the septum wall and an oppositely disposed wall portion, wherein first and second anchoring members are connected to corresponding ends of the elongate member but are disposed external of the heart chamber. Connecting clips or the like are applied to the corresponding exterior ends of the elongate member, resulting in the papillary muscles within the chamber to be effectively re-shaped or repositioned. A predetermined force is applied to the heart itself and/or the affected portions of the heart chamber.


Other specific treatments associated with mitral regurgitation sometimes may include the surgical repair or replacement of the mitral valve, resulting in traumatic and frequently dangerous surgical procedures being performed on a patient.


Accordingly, there is a need in the medical arts for appropriate instrumentation and attendant methods of overcoming heart valve malfunctions, specifically including mitral regurgitation.


SUMMARY OF THE INVENTION

The present invention is directed to an instrument assembly and attendant method for treating heart valve malfunction. In more specific terms, the instrumentation and method are specifically, but not exclusively, adapted for the treatment of mitral regurgitation. However, for purposes of clarity and in order to emphasize the versatility of the various embodiments of the present invention, the subject instrument assembly and method will be described generically regarding treatment of a predetermined heart valve. In addition, the present invention will be more specifically described in regard to a procedure involving correction of a prolapsing mitral valve leaflet, which may include the anterior mitral valve leaflet and/or the posterior valve leaflet correcting of mitral regurgitation.


Accordingly, the instrument assembly of the present invention includes an introductory sheath formed of a material of sufficient rigidity to facilitate the penetration and passage through various portions of the heart and mitral valve. As such, the introductory sheath may be said to be formed of at least a “semi-rigid” material. However, this term is to be understood to include material having sufficient flexibility to be manipulated or “steered” through and/or along a predetermined path during the delivery of the sheath and associated components of the instrument assembly to predetermined portions of the heart. Moreover, in one preferred embodiment the sheath will be sufficiently maneuverable to pass through the atrial wall into interior portions of the heart such as the left atrium and left ventricle. In addition and as described in greater detail hereinafter, an introduction assembly and a delivery catheter will be used to facilitate the positioning the introductory sheath into the thoracic cavity and through the atrial wall or other preferred exterior locations of the heart wall.


Additional structural operative features of the instrument assembly include the provision and utilization of at least one, or under required circumstances, more than one elongated chord formed of a biocompatible material and being at least partially flexible. The material from which the chord is formed should have sufficient and/or predetermined tensile strength to exert a predetermined tension on the predetermined, prolapsing valve leaflet as the chord extends between a corresponding portion of the heart wall, such as the ventricular wall, as also more fully described hereinafter. The chord is initially housed concentrically within the interior of the introductory sheath, wherein the sheath and the chord are concurrently movable relative to the heart as well as throughout a portion of the interior thereof. As set forth above, the introductory sheath is formed of a material having physical characteristics that allow it to be accurately manipulated so as to be steerable in such a manner that its tip can aim towards the different designated portions of the anterior or posterior mitral valve leaflets that are in the siege of the prolapse.


Also, the exteriorly concentric introductory sheath is movable relative to and along the length of the chord so as to accommodate proper and intended placement and anchoring of the chord within the heart chamber. Therefore, the sheath is movable with the chord into and through predetermined portions of the heart chamber and movable relative to the chord after proper anchoring, securing and/or intended placement of the chord within the heart chamber. Accordingly, the instrument assembly of the present invention also includes an anchor secured to an outer or distal end of the chord. The anchor may also be sufficiently sharpened, pointed or otherwise configured to penetrate an intended heart valve leaflet, such as a prolapsing leaflet of the mitral valve. Further, the penetration and passage of the anchor, the chord, and the introductory sheath substantially through the predetermined valve leaflet may thereby be facilitated.


When properly positioned, the anchor is structured to be secured to a substantially opposing portion of the heart wall, such as the ventricular wall associated with the left ventricle and/or the papillary muscles associated therewith. In order to assure secure anchoring of the distal end of the chord with the corresponding ventricular wall, a gripping structure may be operatively attached to a remainder of the anchor and disposable into an outwardly and/or radially extending orientation. When so disposed, the gripping structure, in combination with the remainder of the anchor, eliminates or significantly restricts the inadvertent detachment of the anchor, and the distal end of the chord attached thereto, from the corresponding ventricular wall portion. In at least one preferred embodiment of the present invention, the anchor and the gripping structure are disposed and applied so as to penetrate the corresponding portion of the ventricular wall but not extend there through. Therefore, the anchored relation of the gripping structure, anchor and the connected distal end of the chord may be defined by a penetration into the interior of the ventricular wall rather than a passage completely there through. Complications associated with sealing and exterior attachment of the chord to the exterior of the ventricular wall are thereby eliminated.


As provided, the present invention further comprises a method of treating heart and valve malfunction utilizing the instrument as generally set forth above. Accordingly, the attendant method comprises, at least in more generic terms, the passing of a portion of the instrument assembly into an intended heart chamber and into penetrating relation to a predetermined valve leaflet, such as a prolapsing leaflet. The sheath, with the chord concentrically disposed on the interior thereof, is passed through the predetermined valve leaflet. Therefore, by virtue of the enclosed disposition of the chord, the chord and sheath will concurrently enter and extend through the predetermined valve leaflet. By manipulation and the application of a positioning force on the sheath, the sheath and the chord will extend across a corresponding heart chamber and into an anchored relation with a substantially opposing portion of the heart wall.


Once the anchor and the connected distal end of the chord are secured to the opposing heart wall portion, the sheath, still concentrically mounted exteriorly of and in enclosing relation to the chord, is withdrawn from heart chamber in which the chord is anchored. More specifically, the sheath is withdrawn by moving relative to and back along the length of the anchored chord in a direction away from the anchor and connected distal end of the chord. The introductory sheath is further withdrawn back through the predetermined valve leaflet while the proximal portion of the chord remains within the valve leaflet. Once the sheath is disposed exteriorly of the valve leaflet and possibly on the exterior of the heart itself, a securing assembly is operatively disposed within the heart chamber in interconnecting relation between a proximal extremity of the chord and the predetermined valve leaflet.


In more specific terms, the securing assembly may include a securing member, which will be mounted on or connected to a proximal portion of the chord and moved along the length thereof into a predetermined, interconnecting position relative to the prolapsing valve leaflet. The position of the securing member will be tailored to and disposed at the exact position needed to achieve correction of the mitral regurgitation, which may be determined by preoperative transoesopageal echography or other preoperative manner, to quantify the occurring mitral regurgitation preoperatively. The securing member then securely interconnects the proximal extremity of the chord to the predetermined valve leaflet and any excess length of the chord will be severed or detached from the proximal extremity of the chord, which is secured to the surface of the leaflet associated with the atrium. The chord is thereby properly tensioned between the opposing, interior corresponding wall portion of the heart and the predetermined valve leaflet so as to overcome the malfunction of the predetermined valve leaflet as explained in more specific details hereinafter.


As emphasized throughout this description, the instrument assembly and attendant method of the present invention is specifically adapted for the treatment of mitral regurgitation. As such, the introductory sheath and the chord, substantially concurrently enter the atrial wall of the left atrium and pass into the interior thereof. Further, the sheath and the chord penetrate and are passed, substantially concurrently, through a prolapsing (flail) anterior or posterior leaflet of the mitral valve into the left ventricle of the heart chamber. Thereafter the sheath and chord are concurrently extended transversely across the left ventricle, wherein the anchor penetrates and is thereby secured in an anchored relation with a substantially opposing portion of the ventricular wall and/or corresponding papillary muscles. The distal end of the chord is connected to the anchor and is thereby secured in an anchored relation to the ventricular wall, by virtue of the penetrating anchor.


Once the distal end of the chord and anchor are in the anchored relation to the ventricular wall, the sheath is withdrawn back along the length of the chord, away from the anchor and the ventricular wall to which the distal portion of the chord is secured. Moreover, the introductory sheath continues to travel back along the length of the chord through the prolapsing anterior or posterior mitral valve leaflet to a location at least exterior to the leaflet, such as within the left atrium and possibly exteriorly of the heart itself.


A securing assembly is then operatively associated with the instrument and is movably disposed along the length of a proximal portion of the chord. In even more specific terms, the movement of the securing assembly and its associated securing member are disposed into an interconnecting position between a proximal extremity of the chord and the mitral valve leaflet penetrated by the chord. As indicated above, proper tensioning is thereby placed on the prolapsing mitral valve leaflet in order to restore a sufficient surface of coaptation between its counterpart, opposing leaflet and maintain the suppressed leaflet in an operative position sufficient to overcome the mitral regurgitation.


Yet another preferred embodiment of the present invention is directed to an instrument assembly and attendant method for treating heart valve malfunction, including mitral valve regurgitation, wherein one of the mitral valves is prolapsing. As further described herein, the treatment procedure of this embodiment involves the positioning of a tensioning cord into the chamber of the heart, preferably through the left atrium. Moreover, the tensioning cord is preferably positioned, using a catheter, sheath and/or other positioning instrument such as, but not limited to, the type set forth above. More specifically, the chord will pass through the mitral valve, preferably through the mitral orifice and between the mitral valve leaflets, into the left ventricle. The distal end of the chord is anchored into the ventricular wall in a position generally opposing the mitral valve being treated. Concurrently, a proximal portion of the synthetic chord remains in a position through the mitral orifice exteriorly of the mitral valve, including at least a part of the proximal portion thereof being disposed in the left atrium.


In order to properly treat a prolapse of affected valve leaflet, the chord is connected to the valve leaflet by securing the proximal portion, more specifically the proximal end thereof to the predetermined mitral valve leaflet. In order to efficiently and effectively accomplish such attachment, this preferred embodiment of the present invention comprises a securing assembly structured to dispose a securing member in interconnecting relation between the proximal end of the chord and the predetermined valve leaflet. Accordingly, the securing assembly comprises a housing including a head portion and a base connected to the housing in a manner which facilitates relative movement of the head portion and the base between an open position and a closed position. Moreover, a capturing area is formed and/or disposed between the head portion and the base when they are in the open position. The disposition, dimension and configuration of the capturing area are such as to facilitate the gripping or other removable but secure engagement of the predetermined leaflet there between. As such, when “gripped” or otherwise removably retained between the head portion and the base as they are moved from the open position towards or into the closed position, the leaflet is disposed and maintained in a “connecting orientation”, as described in greater detail hereinafter. It is further emphasized that the term “closed position” is meant to describe the relative positions of the head portion and the base when they are gripping, engaging or otherwise removably but securely retaining the predetermined leaflet there between. Accordingly, it is recognized the closed position may be used to include the head portion and the base not being disposed in direct confronting or engaging relation to one another.


Additional details of the securing assembly include a positioning member, which may be in the form of a plunger or like structure, capable of being disposed in driving engagement with the head portion. As a result, manipulation of the housing to the extent of moving the positioning member it into a driving engagement with the head portion forces the head portion towards the base and into or towards the closed position and/or in gripping and removably retaining relation to the predetermined valve leaflet disposed within the capturing area. In order to facilitate return orientation of the head portion and base into the open position, when it is intended to release of the predetermined leaflet, a biasing structure is disposed to normally bias head portion into or towards the open position.


The securing assembly also includes a retaining assembly disposed on both the head portion and the base. As such, the retaining assembly is structured to removeably retain the securing member in a position which facilitates the connection of the securing member to the predetermined valve leaflet, before relative movement of the head portion and base and subsequently, as the head portion and base are relatively disposed from the open position and into or towards the closed position.


In more specific terms, the retaining assembly comprises first and second retaining segments each disposed on a different one of the head portion and base. Further, the first and second retaining segments are disposed and structured to removeably retain the first and second segments of the securing member, at least initially in spaced relation to one another, when the head portion and the base are in the open position. As also discussed in greater detail hereinafter, at least one embodiment comprises the first and second securing segments being respectively defined by a penetrating segment and a receiving segment. Therefore, when the penetrating and receiving segments are appropriately disposed in the first and second retaining segments, when in the open position, a proximal portion of the chord is connected to the base, as well as to the second retaining segment associated with the base. Accordingly, an “interconnecting relation” of the securing member relative to the predetermined leaflet comprises the penetrating segment disposed in penetrating relation through the valve leaflet, retained within the capturing area, when the head portion and base are disposed into the closed position.


Moreover, the accompanying method for treating mitral valve regurgitation using the instrument assembly, as generally set forth above, includes connecting the proximal portions of the chord to the securing member and the securing assembly, once the distal end of the chord is anchored in the ventricular wall. As indicated, when the distal end of the chord is anchored to the ventricular wall, the proximal portion of the chord will extend through the mitral orifice, between the valve leaflets, rather than penetrating through a valve leaflet, as with at least some of the preferred embodiments of the present invention, as described above. As such, the proximal portion of the chord is then connected to the valve leaflet by the securing member. Moreover, the proximal portion of the chord is connected to the securing assembly and the penetrating segment and the receiving segment are removably disposed within the corresponding first and second retaining segments, while the head portion and base are in the open position.


Accordingly, the chord will be properly tensioned and connected to the valve leaflet when its distal end is anchored to the ventricular wall and a proximal end of the proximal portion is connected to the predetermined valve leaflet. Such connection comprises the penetration of the penetrating segment through the predetermined valve leaflet and the receiving segment concurrently to the proximal end of the chord be being connected to the receiving segment and the base.


These and other objects, features and advantages of the present invention will become clearer when the drawings as well as the detailed description are taken into consideration.





BRIEF DESCRIPTION OF THE DRAWINGS

For a fuller understanding of the nature of the present invention, reference should be had to the following detailed description taken in connection with the accompanying drawings in which:



FIG. 1 is a perspective view of one preferred embodiment of the instrument assembly of the present invention used in the treatment of heart valve malfunction.



FIG. 1A is a perspective view of the instrument assembly of the embodiment of FIG. 1 in an initially introductory position.



FIGS. 2 through 9 are schematic representations of successive steps in the attendant method of utilizing and applying the instrument assembly of the embodiment of FIGS. 1 and 1A specifically for the treatment and correction of mitral regurgitation.



FIG. 10 is a schematic representation of yet another preferred embodiment of the present invention directed to a securing assembly for connecting a proximal end of a tensioned chord to a valve leaflet.



FIG. 10A is a sectional view in partial cutaway of a portion of the embodiment of FIG. 10.



FIG. 11 is a schematic representation of the embodiment of FIG. 10 in a successive, operative position.



FIG. 12 is a schematic representation of the embodiment of FIGS. 10 through 11 in a successive operative position.



FIG. 13 is a schematic representation of the embodiment of FIGS. 10 through 12 in a successive operative position.



FIG. 14 is a schematic representation of the embodiment of FIGS. 10 through 13 in a successive operative position.



FIG. 15 is a schematic representation of the embodiment of FIGS. 10 through 14 in a successive operative position.



FIG. 16 is a schematic representation of the embodiment of FIGS. 10 through 15 in a successive operative position.



FIG. 17 is a schematic representation of another embodiment of the present invention similar to but distinguishable from the embodiment of FIGS. 10 through 16.



FIG. 18 is a schematic representation of another embodiment of the present invention similar to but distinguishable from the embodiment of FIGS. 10 through 16.





Like reference numerals refer to like parts throughout the several views of the drawings.


DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

As represented in the accompanying drawings and with specific reference to FIGS. 1 and 1A, the instrument assembly of the present invention is schematically and generally indicated as 10 and is used for the treatment of heart valve malfunction generally and more specifically for the treatment of mitral regurgitation. As such, the instrument assembly 10 includes an elongated delivery catheter or tube 12 having a hollow interior and structured to deliver operative portions of the instrument assembly 10 to the treatment site within the heart of a patient. As such, the elongated delivery catheter or tube 12 is dimensioned and configured to enter the chest cavity through appropriate introduction instrumentation. The delivery tube 12 is formed of a material and/or includes positioning structure or linkage incorporated therein which facilitates the maneuvering or steering thereof to a point at least generally exterior the heart and more specifically the atrial wall of the left atrium. However, the at least semi-rigid material of the delivery tube 12 should be sufficient to also facilitate proper manipulation so as to position or “steer” the remainder of the instrument assembly 10 to the intended location within the interior thereof, as well as facilitate penetration of and anchoring to intended tissue portions.


The instrument assembly 10 also includes an introductory sheath 14 movable within the delivery tube 12 and an elongated flexible material chord 16. The introductory sheath 14 is concentrically and movably enclosed within the delivery tube 12 and the sheath 14 is movably disposed concentrically about the chord 16. It is emphasized that FIG. 1 represents a completely assembled instrument assembly 10. However, as will be described in detail with the schematic representations of FIGS. 1 through 9, the various portions of the instrument assembly 10 are used in successive steps to accomplish installation relative to the affected portions of the heart valve being treated.


Accordingly, the instrument assembly 10 further includes the elongated flexible material chord 16 which may be formed of a synthetic, biocompatible material. An anchor 18 is fixedly secured to the outer or distal end of the chord 16 and is movable therewith relative to the introductory sheath 14. As clearly represented in FIG. 1A chord 16 is at least initially enclosed concentrically within the interior of the introductory sheath 14, wherein the sheath 14 is movable along the length of the chord 16. Further, the sheath includes an open distal end 14′ serving to at least partially encloses or be registered alignment with the anchor 18. Therefore, FIG. 1A represents cooperative portions of the instrument assembly 10 at least upon initial entry of the introductory sheath 14 and anchor 18 into the interior of the heart 30, as specifically described in detail in FIGS. 2 through 9, hereinafter described.


Therefore, with further regard to FIG. 1A, the positioning of the anchor 18, the introductory sheath 14 and the chord 16 is such that the chord 16 is disposed within the interior of the introductory sheath 14. Further, the anchor 18 is disposed at least partially within and/or in an exposed relation to the open distal end 14′ of the sheath 14. In addition, the anchor 18 has a sharpened, pointed or other appropriate configuration for penetrating portions of the heart. The anchor 18 may also include a gripping structure 20 which may be initially disposed in a collapsed position when the anchor 18 is in registry with the distal opening 14′ of the sheath 14. However, upon removal or exposure of the anchor 18 and a length of the chord 16 from an interior of the sheath 14, the gripping structure 20 may include an inherent bias causing it to expand outwardly and/or radially from the remainder of the anchor 18. This gripping structure 20 is provided to facilitate a secure engagement of the anchor 18 with predetermined heart wall portions, when the instrument assembly 10 is properly applied in the treatment of the heart valve malfunction.


With further reference to FIG. 1 the assembled representation of the instrument assembly 10 further includes the provision of a securing member 22 which may travel along the length of the chord 16. The securing member may be forcibly positioned into an intended interconnecting location relative to a heart valve leaflet in order to accomplish a secure attachment of the chord 16 to the leaflet as will be explained in greater detail hereinafter. Such an interconnecting placement of the securing member 22 relative to both the chord 16 and the affected valve leaflet serves to establish and maintain a sufficient tension and/or positioning force on the predetermined valve leaflet to suppress movement thereof, as explained hereinafter with regard to FIGS. 2 through 9.


As schematically represented in FIGS. 2 through 9, the heart is generally indicated as 30 and includes the representative portions including the left atrium 32, the left ventricle 34 and the mitral valve 36, including the anterior and posterior mitral valve leaflets 38 and 38′, respectively. As additionally represented, the left ventricle 34 is at least partially bordered or surrounded by ventricular wall 40 which may be directly associated with corresponding papillary muscles (not shown) facilitating the proper positioning of the mitral valve leaflets 38 and 38′ through organic tissue tethering, as generally outlined above.


For purposes of clarity, FIGS. 2-9 schematically represent the instrument assembly 10 used on the anterior leaflet 38 of the mitral valve 30 in order to treat and correct mitral regurgitation. However, it is emphasized the instrument assembly 10 and the attendant method of the present invention may be applied to an anterior and/or the posterior prolapsing leaflet in the manner described herein, in correcting a mitral regurgitation condition of the heart. Moreover, while the various embodiments of the present invention are described using a single chord 16, a plurality of chords 16 may be used with the cooperative instrument components of the instrument assembly 10.


With initial reference to FIGS. 2 and 3, the instrument assembly 10 is introduced into the interior of the heart 30 and more specifically into the left atrium 32, through the atrium wall 33, using an appropriate introduction assembly 42. Therefore, the introductory sheath 14 and the chord 16 located concentrically within the sheath 14 will concurrently pass through the atrial wall 33 of the heart into the left atrium 32, as it is directed towards the anterior leaflet 38 of the mitral valve 36. It should be further noted that the anchor 18 is at least initially in the position generally represented in FIG. 1A. Due to its predetermined configuration the anchor 18 will serve to approach and penetrate the anterior leaflet 38 of the mitral valve 36 as clearly represented in FIG. 3.


In addition, the penetration of the anterior leaflet 38 initially by the anchor 18 will facilitate the penetration and passage, substantially concurrently, of the chord 16 and the introductory sheath 14 through the anterior leaflet 38 as schematically represented. As further represented in FIG. 3, a continued force will be applied to the introductory sheath 14 causing the sheath 14 and interiorly disposed chord 16, as well as the anchor 18 to continue concurrent passage through the anterior valve leaflet 38 until the anchor 18 reaches, penetrates and is secured to the ventricular wall 40 and/or correspondingly disposed papillary muscles associated therewith.


As best represented in FIGS. 4 and 5, once the anchor 18 is secured to the ventricular wall 40 and/or the corresponding papillary muscles, the distal end of the chord 16 will be affixed to the ventricular wall 40 and remain in place as the introductory sheath 14 is withdrawn back along the length of the chord 16, as indicated by the directional arrows. As the introductory sheath 14 is withdrawn back along the length of the chord 16, the aforementioned gripping structure 20 will have been expanded into a gripping orientation. When the gripping structure 20 is so oriented, the anchor 18 and the distal end of the chord 16 connected thereto will be reliably anchored or connected to the ventricular wall 40. Continued withdrawal of the introductory sheath 14 will result in its passage back through the initially penetrated and suppressed mitral valve leaflet 38, as clearly represented in FIG. 5. As such, the majority of the length of the chord 16 will thereby be exposed and maintained in the represented position within the left ventricle and between the ventricular wall 40 and the penetrated (suppressed) leaflet 38, while the introductory sheath 14 passes back through the introduction assembly 42 and out of the interior of the left atrium 32, through the atrium wall 33. Therefore, the proximal portion 16′ of the chord 16 remains in place, within the left atrium 32, and may serve effectively as a guide or otherwise facilitate the placement of the securing member 22, as represented in FIGS. 6 through 9.


More specifically, once the introductory sheath 14 is removed from the left atrium 32, through the introduction assembly 42, the securing assembly, including securing member 22, will move along the length of the chord 16 as it is introduced into the left atrium 32 such as through the atrium wall via, the introduction assembly 42. As schematically represented, the securing member 22 will be forced, moved, positioned, etc. along the proximal portion or length 16′ of the chord 16 by any appropriate technique and/or appropriate positioning instrument/device, which may be incorporated or operatively associated with the chord 16. Positioning of the securing member 22 will continue until it is disposed in engaging, interconnecting and at least partially protective or sealing engagement with an exterior surface portion of the suppressed anterior mitral valve leaflet 38 located within the left atrium 32. The position of the securing member 22 will be disposed in the exact position, on and along the length of the chord 16 needed to position and or suppress movement of the leaflet 38 to achieve correction of the mitral regurgitation. Such exact positioning may be determined by preoperative transoesopageal echography or other preoperative manner to quantify online mitral regurgitation preoperatively.


With further regard to the positioning of the securing member 22 into the interconnecting relation between the proximal extremity of chord 16 and the anterior leaflet 38. One embodiment may also include a guiding element or sleeve 25, as represented in FIG. 1. When utilized, the element 25 will be disposed at a predetermined position along the length on the artificial chord 16 and be mounted concentrically about and/or along a portion of the chord 16. As applied, the guiding element 25 may assume and or be at least partially defined by a variety of different structures, devices and/or mechanisms other than, but possibly including, the schematically represented sleeve. Accordingly, the guiding element is operative to accurately center or otherwise dispose the securing member 22 in sealing and/or covering relation to the aperture or area where the chord 16 remains in its extended position through the anterior leaflet 38. Further, the securing member 22 securely connects the proximal extremity 16″ of the chord 16 to the valve leaflet 38 and any excess length of the proximal portion 16′ of the chord 16 will be severed or detached from the extremity 16″ of the chord 16 and the securing member 22, which interconnects the proximal extremity 16″ to the “exterior” surface of the leaflet 38 exposed to the left atrium 32.


With continued reference to FIGS. 5 through 8, manipulation of the instrument of the assembly 10, such as by medical personnel manipulating the delivery catheter 12 causes a severing of the proximal extremity from a remainder of the chord 16. As a result, the securing member 22 serves to securely connect and fasten the chord 16 to the exterior of the anterior leaflet 38, disposed within the left atrium 32. Upon a secure connection of the securing member 22 to the exterior side or surface of the anterior leaflet 38, the introductory sheath 14 passes back through the introduction assembly 42 so as to exit the left atrium 32 and the remainder of the heart. Thereafter, the introduction assembly 42 is also removed from its initial operative position.


Therefore, as represented in FIG. 9 the heart 30 is represented with the synthetic chord 16 properly anchored between the ventricular wall 40 and the penetrated anterior leaflet 38. In this position, proper tensioning or positioning forces are applied to the anterior leaflet 38 causing it to be positioned in a manner which effectively overcomes mitral regurgitation, as set forth above.


As schematically represented in FIGS. 10 through 16, the present invention comprises yet another preferred embodiment directed to a securing assembly generally indicated as 50. The securing assembly 50 and its method of use is directed to the attachment of the proximal portion or proximal end of a cord 116, subsequent to it being anchored, as at 18 in the ventricular wall 40 of the heart 30. Similar to the embodiments represented in FIGS. 2 through 5, as set forth above, the synthetic cord 116 is operatively positioned within the left ventricle 34 by means of a sheath 14 or alternatively structured “spear” or like instrument introduced into the left atrium 32 through a heart wall, 33 utilizing an introduction assembly 42. The introduction assembly 42 may be, but is not limited to, the type of introduction assembly represented in the currently pending U.S. patent application Ser. No. 13/691,087 to the inventor herein. One distinguishing feature of the present invention includes the introduction of the cord 116 into the left ventricle 34 through the mitral orifice and/or between the interior and posterior mitral valve leaflets 38 and 38′ respectively. This differs from the embodiments 2 through 5 wherein the sheath 14 and/or substantially equivalent spear or like structure penetrates one of the leaflets 38, 38′ under treatment, such that a proximal portion of the cord 16 extends through the predetermined leaflet under treatment.


Moreover, the securing assembly 50 of this additional preferred embodiment of the present invention is intended to secure a securing member in attached, interconnecting relation between a proximal portion 116′ or a proximal end 116″ of the cord 116 to the predetermined valve leaflet being treated. Accordingly, the securing assembly 50 includes a housing generally indicated as 52 having a head portion 54 and a base 56 moveably disposed relative to one another between an open position, as represented in FIGS. 10 and 11 and a substantially closed position, as successively represented in FIGS. 12 and 13. In accomplishing the disposition of the head portion 54 and base 56 between the open and closed positions, a positioning member and/or plunger 58 is mounted on and/or within the housing 52. As such the positioning member 58 is capable of being manipulated so as to force the head portion 54 from the open position, as represented in FIGS. 10 and 11, into the closed position, as generally represented in FIGS. 12 and 13. Therefore, the positioning member 58 may be in the form of a plunger type structure, which may be activated, controlled and/or operated by appropriate manipulation of the end 53 or other appropriate portion of the housing 52.


It is of further note that the housing 50, including all of the operative and structural components associated therewith, is sufficiently dimensioned to pass through an appropriately disposed and dimensioned introduction assembly 42 of the type at least generally described above.


Other structural and operative features of the securing assembly 50 includes a biasing structure 60 mounted on the housing 52 in substantially biasing relation to at least the head portion 54 and at least a portion of a retaining assembly generally indicated as 62. As will be explained in greater detail hereinafter with regard to the method of use or operation of the securing assembly 50, the retaining assembly 62 includes a first retaining segment 64 connected to and moveable with the head portion 54, as well as a second retaining segment 66 connected to or mounted to the base 56. As such, retaining assembly 62 is disposed on or connected to both the head portion 54 and base 56 is structured to initially and removeably retain a securing member 68 thereon. Moreover, the securing member 68, as used in combination with the securing assembly 50, includes a multi-part structure, comprising a first or penetrating securing segment 70 and a second or receiving securing segment 72. Each of the first and second securing segments 70 and 72 is structured to assume an interconnecting relation between the cord 116 and more specifically a proximal end 116″ thereof and a predetermined valve leaflet 100 involved in the procedure.


Yet additional features of the securing assembly 50 includes a connecting linkage 74 mounted on the housing 52 and serving to moveably support at least the head portion 54 and structured for the movement of the positioning member or plunger 58. As such, the head portion 54 and/or plunger 58 are collectively disposed from the open position into the closed position.


In addition a severing or disconnecting member 76 is also mounted on the housing in interconnected relation to the head portion 54. The severing member is moveable with the head portion 54 when it is disposed between the open and closed positions. As described with specific reference to FIGS. 13 and 14, the disconnecting or severing structure 76 may include a severing blade or like member 78 connected to the severing structure 76 and moveable therewith and with the head portion 54 as it is forced by the positioning member or plunger 58 from the open position of FIGS. 10 and 11 into the closed position of FIGS. 12 and 13. As indicated, the blade 78 will serve to cut or otherwise disconnect a remainder of the proximal portion 116′ of the cord 116 from what may be accurately referenced to as a proximal end 116″ of the cord 116.


The primary reference to FIG. 10 A and as further represented throughout the remaining FIGS. 10 through 16, the base 56 as well as connecting linkage 74 includes an at least partially slotted or apertured construction, such as at 57 and 75 respectively. Accordingly, prior to disposition of the first and second securing segments 70 and 72 in an interconnecting relation to both the cords 116 and leaflet 100, a proximal portion 116′ of the cord 116, including the proximal end 116″, is connected to the base 56, receiving segment 72 and the connecting linkage 74. Such connection may occur by an at least partial “threading” thereof through the respective slots or openings 57, 72′, and 75 respectively. As clearly represented in FIG. 10A, the structure of the base 56, receiving securing segment 72 and the connecting linkage 74 may have an at least partially open, apertured or otherwise appropriately configured structure which facilitates the “threading” or other type of connection of the proximal portion 116′ of the cord 116 and/or proximal end 116″ to and/or through the base 56, the receiving securing segments 72 and the linkage 74.


As represented throughout FIGS. 1 through 16 and with reference to FIGS. 2 through 5 as well as 11 through 16, a method of use and/or application of the securing assembly 60 may be directed to a method of treating a heart valve malfunction specifically including, but not limited to, the treatment of mitral valve regurgitation. As such, a tensioning cord 116 is introduced into the heart chamber through the left atrium and is directed through the mitral orifice to an anchored relation to the ventricular wall 34. Subsequent to the anchoring of the distal end, as at 18, the proximal portion and/or more specifically, the proximal end 116 Prime of the cord 116 threaded or otherwise connected to the base 56, receiving securing segment 72 and a remainder of the housing 50 such as through the aperture or slot 75 and the connecting linkage 74. Once the cord 116 and/or distal end 116″ is connected in the manner described, the leaflet 100, which may be under the siege of prolapse, is disposed in a connecting orientation, within the interior of a capturing area 80 between the head portion 54 and the base 56 when in an open or at least partially open position. Hence, when the predetermined valve leaflet 100 is disposed in the connecting orientation, within the capturing area 80, the housing 52 or other appropriate portions thereof, such as end 53, are manipulated to force the positioning member or plunger 58 into driving relation to the head portion 54. This in turn will lower and/or dispose the first retaining segment 64 into engaging, gripping and or at least partially clamping relation to the predetermined valve leaflet 100. Further forced downward travel of the head portion 54, through activation of the plunger 58, will force the penetrating segment 70 of the securing member 68 into penetrating relation with the valve leaflet 100 and there through into connected, penetrating relation with the second or receiving segment 72, as clearly demonstrated in a comparison in the FIGS. 12 and 13. Once the securing member 68 is disposed in interconnecting relation between the proximal end 116″ and the valve leaflet 100, as represented in FIG. 16, the securing assembly 50 will be operated or manipulated to facilitate the disposition of the head portion 54 into the open orientation relative to the base 56, as clearly represented in FIGS. 14 and 15. Once in the open position, the securing member 68 upon selective movement into the closed position, will be positioned in penetrating relation to the valve leaflet 100 and will thereby be disposed into the interconnecting relation between the valve leaflet 100, the proximal end 116″ and the interconnected penetrating and receiving segments 70 and 72.


Therefore the interconnecting relation of the securing member 68 relative to the predetermined valve leaflet 100 will be such as to effectively grip and or sandwich it between the penetrating securing segment 70 and the receiving securing segment 72. As such, the distal end 116″ of the cord 116 is also at least partially disposed in effectively connected relation with the penetrating segment 70 and receiving segment 72 as also clearly represented in FIGS. 15 and 16.



FIG. 17 represents yet another embodiment of the present invention, wherein the proximal portion of the chord 116 is connected to the valve leaflet 100 so as to apply adequate tension thereto by passing between the penetrating and receiving segment 70 and 72 respectively. As such, the distal end 116″ of the cord 116 is not threaded through the receiving segment 72, as in the embodiment of FIG. 16, but is clamped, gripped and/or sandwiched between the penetrating and receiving segments 70 and 72 in interconnected, but not penetrating relation to the leaflet 100.



FIG. 18 schematically represents yet another embodiment of the securing member 168 comprising a clip-like structure including first segment 170 and a second segment 172 movably connected as by an integral connection and/or appropriate hinge portion 174. In this embodiment, the securing member 168 is operable to clamp the proximal end 116″ of the proximal portion of the tensioning chord to the leaflet 100 as the proximal end is sandwiched between the first and second segments 170 and 172, when they are in a closed relation to one another and gripping or clamping engagement with the leaflet. Moreover, the material from which the securing member 168 is formed is structured to remain in the closed relation and gripping or clamping engagement with the leaflet 100 and proximal end 116″, when a closing or gripping force is applied thereto as schematically represented by directional arrows 104.


In addition, the securing member 168 can be disposed in the aforementioned closed relation or gripping engagement relative to the leaflet 100 and proximal end 116″ by the securing assembly 50, substantially as described above, with little or no structural or operational modifications be required.


Since many modifications, variations and changes in detail can be made to the described preferred embodiment of the invention, it is intended that all matters in the foregoing description and shown in the accompanying drawings be interpreted as illustrative and not in a limiting sense. Thus, the scope of the invention should be determined by the appended claims and their legal equivalents.


Now that the invention has been described,

Claims
  • 1. An instrument assembly for treating heart valve malfunction by securing a chord, pre-anchored at a distal end thereof to a heart, to a valve leaflet of the heart under sufficient tension to restrict prolapsing of the valve leaflet, said instrument assembly comprising; a securing assembly structured to dispose a securing member in interconnecting relation between a proximal portion of the chord and the valve leaflet,said securing assembly including a head portion and a base relatively disposable between open and closed positions and structured to retain said securing member in an operative position,said securing assembly structured to moveably retain said chord relative to said securing member, a position of said securing assembly relative to the distal end of the chord varying an operative length of the chord,a capturing area disposed between said head portion and said base, at least when said head portion and said base are in said open position,said capturing area configured to receive and removably retain the valve leaflet therein in a connecting orientation to said securing member, andsaid securing member being structured to penetrate and pass through the valve leaflet into said interconnecting relation between the chord and the valve leaflet when said head portion and said base are disposed into said closed position, anda severing member connected to and moveable with said securing assembly, said severing member disposable in severing relation to a proximal portion of the chord concurrent to disposition of said head portion and said base into said closed position and interconnection of said proximal portion of the chord with said securing member.
  • 2. An instrument assembly as recited in claim 1 further comprising a positioning member movable with said head portion between said open and closed positions.
  • 3. An instrument assembly as recited in claim 2 wherein said positioning member is connected to a housing and disposed in driving relation to said head portion when moving from said open position to said closed position.
  • 4. An instrument assembly as recited in claim 2 further comprising a biasing structure disposed to normally bias said head portion from said open position to said closed position.
  • 5. An instrument assembly as recited in claim 1 further comprising a retaining assembly disposed on both said head portion and said base and structured to removably retain the securing member in predetermined relation to the valve leaflet, at least prior to disposition of said securing member into said interconnecting relation.
  • 6. An instrument assembly recited in claim 5 wherein said retaining assembly comprises a first retaining segment, disposed on the head portion and disposed and structured to removably retain and position a first securing segment into said closed position, and a second retaining segment, disposed on the base and disposed and structured to removably retain and position a second securing segment into said closed position.
  • 7. An instrument assembly recited in claim 6 wherein at least one of said first and second retaining segments is structured to receive the chord in connected relation thereto and to a corresponding one of the first or second securing segments.
  • 8. An instrument assembly recited in claim 6 wherein said first retaining segment is connected to said head portion and structured to position said first securing segment into said closed position; said second retaining segment connected to said base and structured to position said second securing segment into said closed position; wherein said first securing segment comprises a penetrating segment; and wherein said second securing segment comprises a receiving segment.
  • 9. An instrument assembly recited in claim 8 wherein said penetrating segment is structured to be disposed in penetrating relation through the valve leaflet retained within said capturing area when the securing member is in said interconnecting relation.
  • 10. An instrument assembly recited in claim 8 wherein said penetrating segment and said receiving segment are structured to be disposed in interconnecting relation to said chord and the valve leaflet when the securing member is in said interconnecting relation.
  • 11. An instrument assembly recited in claim 8 wherein the chord is structured to be connected to the valve leaflet substantially between said penetrating and receiving segments when the securing member is in said interconnecting relation.
  • 12. An instrument assembly for treating heart valve malfunction by securing a chord, that has a distal end thereof pre-anchored to a heart, to a valve leaflet under sufficient tension to restrict prolapsing of the valve leaflet, said instrument assembly comprising: a chord having a distal end disposable in anchored relation with a heart,a securing assembly structured to dispose a securing member in an interconnecting relation between a proximal portion of the chord and the valve leaflet,said securing assembly including a head portion and a base relatively disposable between open and closed positions and structured to removably retain said securing member in an operative position, said securing member being within said securing assembly prior to said securing member being disposed in said interconnecting relation,said securing assembly structured to moveably retain said chord relative to said securing member during positioning of said securing member, a position of said securing assembly relative to the distal end of the chord setting an operative length of the chord at the securing member,said base comprising a slot or aperture, the chord passing through the base via the slot or aperture for movably retaining said chord relative to said securing member during positioning of said securing member,a capturing area disposed between said head portion and said base, at least when said head portion and said base are in said open position,said capturing area configured to receive and removably retain the valve leaflet therein in a connecting orientation to said securing member,
CLAIM OF PRIORITY

The present application is a continuation in part of U.S. patent application Ser. No. 13/691,087, filed Nov. 30, 2012, which claims the benefit under 35 U.S.C. Section 119(e) of Provisional Patent Application Ser. No. 61/729,152, filed Nov. 21, 2012, and which is incorporated herein by reference in its entirety.

US Referenced Citations (468)
Number Name Date Kind
3587567 Schiff Jun 1971 A
4536893 Parravicini Aug 1985 A
4690134 Snyders Sep 1987 A
5201742 Hasson Apr 1993 A
5591170 Spievack et al. Jan 1997 A
5702421 Schneidt Dec 1997 A
6063070 Eder May 2000 A
6206907 Marino et al. Mar 2001 B1
6328757 Matheny Dec 2001 B1
6425911 Akerfeldt et al. Jul 2002 B1
6508828 Akerfeldt et al. Jan 2003 B1
6537290 Adams et al. Mar 2003 B2
6596012 Akerfeldt et al. Jul 2003 B2
6616596 Milbocker Sep 2003 B1
6641592 Sauer Nov 2003 B1
6682489 Tenerz et al. Jan 2004 B2
6712837 Akerfeldt et al. Mar 2004 B2
6902522 Walsh Jun 2005 B1
6929655 Egnelöv et al. Aug 2005 B2
6960220 Marino et al. Nov 2005 B2
7044916 Tenerz et al. May 2006 B2
7445626 Songer Nov 2008 B2
8092363 Leinsing Jan 2012 B2
8133168 Monnet Mar 2012 B2
8147542 Maisano et al. Apr 2012 B2
8408214 Spenser Apr 2013 B2
8506624 Vidlund Aug 2013 B2
8758393 Zentgraf Jun 2014 B2
8790394 Miller Jul 2014 B2
9566443 de Canniere Feb 2017 B2
20020100485 Stevens et al. Aug 2002 A1
20020161378 Downing Oct 2002 A1
20030120337 Van Tassel et al. Jun 2003 A1
20040087831 Michels et al. May 2004 A1
20040102804 Chin May 2004 A1
20040106945 Thramann et al. Jun 2004 A1
20040116897 Aboul-Hosn Jun 2004 A1
20040138526 Guenst Jul 2004 A1
20050137700 Spence Jun 2005 A1
20050149108 Cox Jul 2005 A1
20060074484 Huber Apr 2006 A1
20060135962 Kick et al. Jun 2006 A1
20060241655 Viola Oct 2006 A1
20060247672 Vidlund et al. Nov 2006 A1
20070055206 To Mar 2007 A1
20070135826 Zaver et al. Jun 2007 A1
20070162066 Lyon Jul 2007 A1
20070239108 Albrecht et al. Oct 2007 A1
20070265643 Beane et al. Nov 2007 A1
20080033241 Peh et al. Feb 2008 A1
20080114342 Whayne et al. May 2008 A1
20080140116 Bonutti Jun 2008 A1
20080275295 Gertner Nov 2008 A1
20090005800 Franer Jan 2009 A1
20090105751 Zentgraf Apr 2009 A1
20090192598 Lattouf Jul 2009 A1
20100042147 Janovsky Feb 2010 A1
20100161042 Maisano et al. Jun 2010 A1
20100161043 Maisano Jun 2010 A1
20100179574 Longoria et al. Jul 2010 A1
20100228077 Lenker et al. Sep 2010 A1
20100274091 Rothstein et al. Oct 2010 A1
20110029071 Zlotnick et al. Feb 2011 A1
20110060182 Kassab et al. Mar 2011 A1
20110166413 Alferness Jul 2011 A1
20110190811 Shanley Aug 2011 A1
20120276928 Shutter Jan 2012 A1
20120143209 Brecheen et al. Jun 2012 A1
20120272452 Schultz Nov 2012 A1
20120272495 Hildebrandt et al. Nov 2012 A1
20120272497 Smith Nov 2012 A1
20120272499 Schley et al. Nov 2012 A1
20120272523 Calla et al. Nov 2012 A1
20120272555 Heath Nov 2012 A1
20120272556 Brown Nov 2012 A1
20120272595 Gallant Nov 2012 A1
20120272603 Carbines Nov 2012 A1
20120272611 Tsukimoto et al. Nov 2012 A1
20120272624 Argeriou et al. Nov 2012 A1
20120272632 Lans Nov 2012 A1
20120272637 Holland et al. Nov 2012 A1
20120272652 Nicholls et al. Nov 2012 A1
20120272653 Merrill et al. Nov 2012 A1
20120272660 Garrett Nov 2012 A1
20120272661 Milburn Nov 2012 A1
20120272662 Milburn Nov 2012 A1
20120272667 Ferraro et al. Nov 2012 A1
20120272670 Choi et al. Nov 2012 A1
20120272705 Hlrane Nov 2012 A1
20120272738 Klessel et al. Nov 2012 A1
20120272741 Xiao et al. Nov 2012 A1
20120272768 Schmidt et al. Nov 2012 A1
20120272780 Schimings et al. Nov 2012 A1
20120272815 Lingel et al. Nov 2012 A1
20120272817 Lindh, Sr. et al. Nov 2012 A1
20120272841 Heymanns et al. Nov 2012 A1
20120272843 Graff Nov 2012 A1
20120272845 Loiret-Bernal et al. Nov 2012 A1
20120272846 Fleischer et al. Nov 2012 A1
20120272876 Bergeron et al. Nov 2012 A1
20120272893 Lauerhaas et al. Nov 2012 A1
20120272968 Kirschner Nov 2012 A1
20120272996 Jimenez et al. Nov 2012 A1
20120273014 Tadayon Nov 2012 A1
20120273064 Ismert et al. Nov 2012 A1
20120273078 Hawwa et al. Nov 2012 A1
20120273079 Guclucan Nov 2012 A1
20120273141 Miller et al. Nov 2012 A1
20120273142 Miller et al. Nov 2012 A1
20120273143 Fillmore et al. Nov 2012 A1
20120273161 Raver Nov 2012 A1
20120273174 Barnes Nov 2012 A1
20120273178 Wanni et al. Nov 2012 A1
20120273209 Austin et al. Nov 2012 A1
20120273210 Arizmendi, Jr. et al. Nov 2012 A1
20120273214 Donald et al. Nov 2012 A1
20120273219 Hoffman et al. Nov 2012 A1
20120273220 Ezekiel et al. Nov 2012 A1
20120273228 Allouche Nov 2012 A1
20120273230 Patterson et al. Nov 2012 A1
20120273231 Whiddon Nov 2012 A1
20120273232 O'Blenes Nov 2012 A1
20120273328 Sejourne Nov 2012 A1
20120273358 Larnoy et al. Nov 2012 A1
20120273389 Aziz et al. Nov 2012 A1
20120273399 Daboub et al. Nov 2012 A1
20120273438 Nordin et al. Nov 2012 A1
20120273439 Beavers et al. Nov 2012 A1
20120273458 Bret et al. Nov 2012 A1
20120273467 Baxter et al. Nov 2012 A1
20120273470 Zediker et al. Nov 2012 A1
20120273513 Greer, Jr. Nov 2012 A1
20120273555 Flak et al. Nov 2012 A1
20120273580 Warren et al. Nov 2012 A1
20120273641 Gorman et al. Nov 2012 A1
20120273647 Moruzzi Nov 2012 A1
20120273680 Furry Nov 2012 A1
20120273843 Kim Nov 2012 A1
20120273860 Chen et al. Nov 2012 A1
20120273880 Tenet et al. Nov 2012 A1
20120273902 Lin et al. Nov 2012 A1
20120273955 Or-Bach et al. Nov 2012 A1
20120273987 Belcher et al. Nov 2012 A1
20120273989 Graf Nov 2012 A1
20120273993 Shoseyov et al. Nov 2012 A1
20120274001 Prabhu Nov 2012 A1
20120274020 Daboub Nov 2012 A1
20120274061 Wilkinson Nov 2012 A1
20120274065 Knapp Nov 2012 A1
20120274066 Hanbeck Nov 2012 A1
20120274076 Kelaiditis et al. Nov 2012 A1
20120274145 Taddeo Nov 2012 A1
20120274198 Jenek Nov 2012 A1
20120274202 Komatsu Nov 2012 A1
20120274212 Yu et al. Nov 2012 A1
20120274256 O'Rourke Nov 2012 A1
20120274266 Yip Nov 2012 A1
20120274279 Banos et al. Nov 2012 A1
20120274280 Yip et al. Nov 2012 A1
20120274281 Kim Nov 2012 A1
20120274288 Wegener Nov 2012 A1
20120274332 Sinha et al. Nov 2012 A1
20120274391 Kim Nov 2012 A1
20120274395 Deam Nov 2012 A1
20120274440 Meadows et al. Nov 2012 A1
20120274470 Sandvick Nov 2012 A1
20120274477 Prammer Nov 2012 A1
20120274769 Lee Nov 2012 A1
20120274770 Lee Nov 2012 A1
20120274772 Fosburgh et al. Nov 2012 A1
20120274870 Liu Nov 2012 A1
20120274937 Hays et al. Nov 2012 A1
20120274962 Thomas et al. Nov 2012 A1
20120275056 McGuire, Jr. Nov 2012 A1
20120275057 McGuire, Jr. Nov 2012 A1
20120275085 Wilson et al. Nov 2012 A1
20120275128 Takada et al. Nov 2012 A1
20120275140 Feinbloom et al. Nov 2012 A1
20120275236 Hess et al. Nov 2012 A1
20120275244 Do Nov 2012 A1
20120275247 Hwang et al. Nov 2012 A1
20120275248 Won Nov 2012 A1
20120275249 Yang et al. Nov 2012 A1
20120275298 Bryant et al. Nov 2012 A1
20120275299 Taylor et al. Nov 2012 A1
20120275338 Filsfils et al. Nov 2012 A1
20120275356 Aharony et al. Nov 2012 A1
20120275670 Joglekar Nov 2012 A1
20120275754 Krampotich et al. Nov 2012 A1
20120275841 Jimenez et al. Nov 2012 A1
20120275843 Jimenez et al. Nov 2012 A1
20120275845 Etling Nov 2012 A1
20120275860 Exline Nov 2012 A1
20120275861 Myslowski et al. Nov 2012 A1
20120275862 Vitale Nov 2012 A1
20120275881 Mueller Nov 2012 A1
20120275913 Robertson, Jr. et al. Nov 2012 A1
20120275924 Perkinson Nov 2012 A1
20120275927 Rhin Nov 2012 A1
20120275970 Nash et al. Nov 2012 A1
20120275999 Bell et al. Nov 2012 A1
20120276005 Yang et al. Nov 2012 A1
20120276008 Walkenhorst et al. Nov 2012 A1
20120276009 Pfeifer et al. Nov 2012 A1
20120276011 Kupussamy et al. Nov 2012 A1
20120276021 Kumar et al. Nov 2012 A1
20120276025 Florence et al. Nov 2012 A1
20120276041 Salamone et al. Nov 2012 A1
20120276053 Kim Nov 2012 A1
20120276061 Grazia et al. Nov 2012 A1
20120276062 Kellar et al. Nov 2012 A1
20120276064 Blau et al. Nov 2012 A1
20120276067 Westenfelder Nov 2012 A1
20120276068 Sabaawy Nov 2012 A1
20120276069 Karperien et al. Nov 2012 A1
20120276071 Fraser, Jr. Nov 2012 A1
20120276073 Schachner et al. Nov 2012 A1
20120276074 Scharenberg et al. Nov 2012 A1
20120276080 Kinoshita et al. Nov 2012 A1
20120276084 Schaumberg et al. Nov 2012 A1
20120276087 Schafer et al. Nov 2012 A1
20120276088 El-Deiry et al. Nov 2012 A1
20120276089 Lee et al. Nov 2012 A1
20120276101 Kwak et al. Nov 2012 A1
20120276103 Karperien et al. Nov 2012 A1
20120276104 Woisetschlager Nov 2012 A1
20120276110 Simard Nov 2012 A1
20120276111 Hafezi-Moghadam Nov 2012 A1
20120276126 Varadhachary et al. Nov 2012 A1
20120276130 Margarit Y Ros et al. Nov 2012 A1
20120276139 Moormann et al. Nov 2012 A1
20120276143 O'Mahony et al. Nov 2012 A1
20120276144 Kernodle et al. Nov 2012 A1
20120276149 Littman et al. Nov 2012 A1
20120276150 Lauritzen et al. Nov 2012 A1
20120276151 Lewis et al. Nov 2012 A1
20120276152 Hossainy et al. Nov 2012 A1
20120276161 Gravagna et al. Nov 2012 A1
20120276164 Tuominen et al. Nov 2012 A1
20120276169 Kang et al. Nov 2012 A1
20120276173 Marcum et al. Nov 2012 A1
20120276182 Baker, Jr. et al. Nov 2012 A1
20120276185 Hossainy et al. Nov 2012 A1
20120276188 Barrows Nov 2012 A1
20120276189 Johnson Nov 2012 A1
20120276193 Graversen et al. Nov 2012 A1
20120276201 Trachtman Nov 2012 A1
20120276202 Selim et al. Nov 2012 A1
20120276203 Selim et al. Nov 2012 A1
20120276204 Remington et al. Nov 2012 A1
20120276213 Chen Nov 2012 A1
20120276218 Jung et al. Nov 2012 A1
20120276232 Marczyk et al. Nov 2012 A1
20120276237 Heymanns et al. Nov 2012 A1
20120276278 Qiu et al. Nov 2012 A1
20120276286 Vijayakumar Nov 2012 A1
20120276296 Fieberg et al. Nov 2012 A1
20120276297 Cypcar et al. Nov 2012 A1
20120276304 Derrien Nov 2012 A1
20120276330 Durney et al. Nov 2012 A1
20120276365 Petuskey et al. Nov 2012 A1
20120276375 Colgan et al. Nov 2012 A1
20120276381 Cypcar Nov 2012 A1
20120276427 Kim Nov 2012 A1
20120276463 Grannell et al. Nov 2012 A1
20120276465 Paganelli Nov 2012 A1
20120276469 Shizuku Nov 2012 A1
20120276509 Iannotti et al. Nov 2012 A1
20120276518 Gillis Nov 2012 A1
20120276522 Huang et al. Nov 2012 A1
20120276528 Cargill et al. Nov 2012 A1
20120276529 Galisson et al. Nov 2012 A1
20120276537 Kühn et al. Nov 2012 A1
20120276552 Lu Nov 2012 A1
20120276553 Gronthoe et al. Nov 2012 A1
20120276554 Gutteridge et al. Nov 2012 A1
20120276555 Kuhn et al. Nov 2012 A1
20120276558 Soper et al. Nov 2012 A1
20120276572 Shekdar et al. Nov 2012 A1
20120276581 Arav et al. Nov 2012 A1
20120276588 Hallen-Adams et al. Nov 2012 A1
20120276591 Kneissel et al. Nov 2012 A1
20120276618 Dayton et al. Nov 2012 A1
20120276626 Shogbon et al. Nov 2012 A1
20120276627 Kelnar et al. Nov 2012 A1
20120276628 Khan et al. Nov 2012 A1
20120276632 Strunk et al. Nov 2012 A1
20120276679 Wu Nov 2012 A1
20120276694 Koezuka et al. Nov 2012 A1
20120276754 Cordingley et al. Nov 2012 A1
20120276887 Romine et al. Nov 2012 A1
20120277006 Kim Nov 2012 A1
20120277008 Kitchen et al. Nov 2012 A1
20120277051 Cooper et al. Nov 2012 A1
20120277073 Bartsch Nov 2012 A1
20120277093 Andrew et al. Nov 2012 A1
20120277110 Andre et al. Nov 2012 A1
20120277111 Crabtree et al. Nov 2012 A1
20120277112 Linn et al. Nov 2012 A1
20120277118 Bhati et al. Nov 2012 A1
20120277120 Serber et al. Nov 2012 A1
20120277144 Duckers Nov 2012 A1
20120277152 Ringeisen et al. Nov 2012 A1
20120277155 VanAntwerp et al. Nov 2012 A1
20120277156 Gross et al. Nov 2012 A1
20120277157 Hillman Nov 2012 A1
20120277161 Agrez et al. Nov 2012 A1
20120277162 Krasnoperov et al. Nov 2012 A1
20120277173 Eidenberger Nov 2012 A1
20120277179 Bhargava Nov 2012 A1
20120277195 Banov et al. Nov 2012 A1
20120277203 Lasley et al. Nov 2012 A1
20120277204 Taniguchi et al. Nov 2012 A1
20120277205 Badorc et al. Nov 2012 A1
20120277210 Catron et al. Nov 2012 A1
20120277215 Ksander et al. Nov 2012 A1
20120277228 Sutton et al. Nov 2012 A1
20120277229 Bearss et al. Nov 2012 A1
20120277251 Palladino et al. Nov 2012 A1
20120277265 Deraeve et al. Nov 2012 A1
20120277269 Reilly Nov 2012 A1
20120277271 Nadeson et al. Nov 2012 A1
20120277277 Wallace et al. Nov 2012 A1
20120277279 Barnett et al. Nov 2012 A1
20120277282 Gotthardt et al. Nov 2012 A1
20120277288 Drumm et al. Nov 2012 A1
20120277307 Waddell Nov 2012 A1
20120277309 Severa et al. Nov 2012 A1
20120277312 Mink et al. Nov 2012 A1
20120277316 Tillman et al. Nov 2012 A1
20120277319 Steigerwald et al. Nov 2012 A1
20120277324 Burk et al. Nov 2012 A1
20120277364 Lolli et al. Nov 2012 A1
20120277376 Baker, Jr. et al. Nov 2012 A1
20120277382 Booth et al. Nov 2012 A1
20120277412 Furusako et al. Nov 2012 A1
20120277430 Taniguchi et al. Nov 2012 A1
20120277431 Taniguchi et al. Nov 2012 A1
20120277451 Ochiai Nov 2012 A1
20120277453 Franklin et al. Nov 2012 A1
20120277517 Ivkov et al. Nov 2012 A1
20120277521 Chamberlin Nov 2012 A1
20120277522 Shalon et al. Nov 2012 A1
20120277523 Shalon et al. Nov 2012 A1
20120277537 Kucklick et al. Nov 2012 A1
20120277544 Fernandes et al. Nov 2012 A1
20120277546 Soykan et al. Nov 2012 A1
20120277567 Harlev et al. Nov 2012 A1
20120277572 Hubbard Nov 2012 A1
20120277574 Panescu Nov 2012 A1
20120277576 Lui Nov 2012 A1
20120277578 Gunday et al. Nov 2012 A1
20120277582 Mafi Nov 2012 A1
20120277584 Tanaka et al. Nov 2012 A1
20120277592 Zelenka et al. Nov 2012 A1
20120277599 Greenhut Nov 2012 A1
20120277600 Greenhut Nov 2012 A1
20120277618 Giftakis et al. Nov 2012 A1
20120277621 Gerber et al. Nov 2012 A1
20120277624 Cucin Nov 2012 A1
20120277626 Burbank et al. Nov 2012 A1
20120277638 Skelton et al. Nov 2012 A1
20120277639 Pollock et al. Nov 2012 A1
20120277642 Smith et al. Nov 2012 A1
20120277668 Chawla Nov 2012 A1
20120277671 Fuentes Nov 2012 A1
20120277672 Pepper et al. Nov 2012 A1
20120277674 Clark, III et al. Nov 2012 A1
20120277693 Bailey Nov 2012 A1
20120277716 Ali et al. Nov 2012 A1
20120277718 Campbell et al. Nov 2012 A1
20120277720 Humes et al. Nov 2012 A1
20120277725 Kassab et al. Nov 2012 A1
20120277729 Melsheimer Nov 2012 A1
20120277730 Salahieh et al. Nov 2012 A1
20120277736 Francischelli Nov 2012 A1
20120277740 Wamking et al. Nov 2012 A1
20120277741 Davalos et al. Nov 2012 A1
20120277743 Vallittu Nov 2012 A1
20120277746 Morgan et al. Nov 2012 A1
20120277749 Mootien et al. Nov 2012 A1
20120277752 Wasielewski Nov 2012 A1
20120277753 Linderman et al. Nov 2012 A1
20120277756 Ray et al. Nov 2012 A1
20120277766 Ferree Nov 2012 A1
20120277770 Fenton et al. Nov 2012 A1
20120277771 Vaz et al. Nov 2012 A1
20120277772 Aben et al. Nov 2012 A1
20120277773 Sargeant et al. Nov 2012 A1
20120277774 Guo Nov 2012 A1
20120277776 Kraemer et al. Nov 2012 A1
20120277781 Gertner Nov 2012 A1
20120277784 Berez et al. Nov 2012 A1
20120277785 Aggerholm et al. Nov 2012 A1
20120277786 Mohl Nov 2012 A1
20120277791 Abo-Auda et al. Nov 2012 A1
20120277792 Teeslink et al. Nov 2012 A1
20120277793 Marczyk et al. Nov 2012 A1
20120277798 Benson et al. Nov 2012 A1
20120277800 Jackson Nov 2012 A1
20120277807 Myung et al. Nov 2012 A1
20120277811 Lauchner et al. Nov 2012 A1
20120277812 Kraus Nov 2012 A1
20120277814 Schuler Nov 2012 A1
20120277820 Wu et al. Nov 2012 A1
20120277823 Gerber et al. Nov 2012 A1
20120277825 Mawson et al. Nov 2012 A1
20120277833 Gerber et al. Nov 2012 A1
20120277835 Della Santina et al. Nov 2012 A1
20120277837 Schuler Nov 2012 A1
20120277843 Weber et al. Nov 2012 A1
20120277845 Bowe Nov 2012 A1
20120277846 Schreck et al. Nov 2012 A1
20120277852 Shukla et al. Nov 2012 A1
20120277853 Rothstein Nov 2012 A1
20120277854 Ryan Nov 2012 A1
20120277855 Lashinski et al. Nov 2012 A1
20120277856 Spenser et al. Nov 2012 A1
20120277862 Tornier et al. Nov 2012 A1
20120277864 Brodke et al. Nov 2012 A1
20120277865 Trieu et al. Nov 2012 A1
20120277867 Kana et al. Nov 2012 A1
20120277872 Kana et al. Nov 2012 A1
20120277873 Kana et al. Nov 2012 A1
20120277879 Ripamonti Nov 2012 A1
20120277880 Winslow et al. Nov 2012 A1
20120277882 Huang et al. Nov 2012 A1
20120277896 Uekita et al. Nov 2012 A1
20120277903 Schaefer Nov 2012 A1
20120277939 Kumar Nov 2012 A1
20120277940 Kumar et al. Nov 2012 A1
20120277949 Ghimire et al. Nov 2012 A1
20120277979 Kato et al. Nov 2012 A1
20120277998 Bevilacqua et al. Nov 2012 A1
20120277999 Somogyi et al. Nov 2012 A1
20120278032 Chen Nov 2012 A1
20120278098 Vovan et al. Nov 2012 A1
20120278099 Kelly et al. Nov 2012 A1
20120278123 Houle Nov 2012 A1
20120278144 Popllock et al. Nov 2012 A1
20120278195 Joseph Nov 2012 A1
20120278200 van Coppenolle et al. Nov 2012 A1
20120278236 Jain et al. Nov 2012 A1
20120278242 Griffith Nov 2012 A1
20120278411 Lavine Nov 2012 A1
20120278439 Ahiska et al. Nov 2012 A1
20120278454 Stewart et al. Nov 2012 A1
20120278484 Westphal Nov 2012 A1
20120278520 Barrenscheen et al. Nov 2012 A1
20120278554 Eilert Nov 2012 A1
20120278592 Tran Nov 2012 A1
20120278597 De Atley et al. Nov 2012 A1
20120278654 Shen et al. Nov 2012 A1
20120278657 Baker et al. Nov 2012 A1
20120278676 Teraura Nov 2012 A1
20120278684 Eldredge et al. Nov 2012 A1
20120278689 Tamo et al. Nov 2012 A1
20120278760 Cerny et al. Nov 2012 A1
20120278771 Ren Nov 2012 A1
20120278799 Starks et al. Nov 2012 A1
20120278865 Sawdy Nov 2012 A1
20120278913 Fraser Nov 2012 A1
20120278947 Guo Nov 2012 A1
20120278957 Phan et al. Nov 2012 A1
20120283758 Miller Nov 2012 A1
20130041395 De Canniere Feb 2013 A1
20130066275 De Canniere Mar 2013 A1
20150148590 de Canniere May 2015 A1
Foreign Referenced Citations (14)
Number Date Country
0577400 Oct 1999 EP
1147743 Oct 2001 EP
1169968 Jan 2002 EP
1222896 Jul 2002 EP
1266626 Dec 2002 EP
1269919 Jan 2003 EP
1254634 Jul 2003 EP
1244725 Jul 2005 EP
1773239 Mar 2010 EP
WO 2012 040865 Apr 2012 WO
WO2012016398 Sep 2012 WO
WO2013023016 Feb 2013 WO
WO 2013036742 Mar 2013 WO
WO2015081053 Jun 2015 WO
Non-Patent Literature Citations (1)
Entry
Mike Blaber, Metals, Non-Metals, and Metalloids, http://www.mikeblaber.org/oldwine/chm 1045/notes/Periodic/Metals/Period06.htm, 1996, accessed May 14, 2015.
Related Publications (1)
Number Date Country
20140142687 A1 May 2014 US
Provisional Applications (1)
Number Date Country
61729152 Nov 2012 US
Continuation in Parts (1)
Number Date Country
Parent 13691087 Nov 2012 US
Child 13967647 US