Patent Application
20180110505
The invention relates to a surgical retraction systems, and more particularly to securing surgical retractors to a retractor frame.
Surgical retraction systems may be used during surgical procedures to access internal organs and bone structures (e.g., a hip joint). Such retraction systems may include surgical retractors that retract soft tissue of the patient. Retractors may be hand held or attached to a surgical retraction frame. Some retractors operate as levers. For example, a distal end of the retractor may pass through an incision in the patient, and the distal end may be placed behind a bone structure. Then, by levering a handle at a proximal end of the retractor, the retractor may retract the soft tissue and hold the incision open in order for a surgeon to access organs and other biological structures via the incision.
Various aspects of this disclosure are directed to adaptor handles and surgical retraction systems having adaptor handles that secure surgical retractors to a frame of the surgical retraction system. For example and without limitation, various aspects of this disclosure describe a universal adaptor handle suitable for securing different types of surgical retractors to a surgical retraction system frame. Various other aspects of this disclosure provide an adaptor handle that secures a surgical retractor to a surgical retraction system frame in an adjustable manner.
The following discussion presents various aspects of the present disclosure by way of one or more examples. Such examples are non-limiting, and thus the scope of various aspects of the present disclosure should not necessarily be limited by any particular characteristics of the provided examples. In the following discussion, the phrases “for example,” “e.g.,” and “exemplary” are non-limiting and are generally synonymous with “by way of example and not limitation,” “for example and not limitation,” and the like.
As utilized herein, “and/or” means any one or more of the items in the list joined by “and/or”. As an example, “x and/or y” means any element of the three-element set {(x), (y), (x, y)}. In other words, “x and/or y” means “one or both of x and y.” As another example, “x, y, and/or z” means any element of the seven-element set {(x), (y), (z), (x, y), (x, z), (y, z), (x, y, z)}. In other words, “x, y and/or z” means “one or more of x, y, and z.”
The terminology used herein is for the purpose of describing particular examples only and is not intended to be limiting of the disclosure. As used herein, the singular forms are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprises,” “includes,” “comprising,” “including,” “has,” “have,” “having,” and the like when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It will be understood that, although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. Thus, for example, a first element, a first component or a first section discussed below could be termed a second element, a second component or a second section without departing from the teachings of the present disclosure. Similarly, various spatial terms, such as “upper,” “lower,” “side,” and the like, may be used in distinguishing one element from another element in a relative manner. It should be understood, however, that components may be oriented in different manners, for example a component may be turned sideways so that its “top” surface is facing horizontally and its “side” surface is facing vertically, without departing from the teachings of the present disclosure.
In the drawings, various dimensions (e.g., layer thickness, width, etc.) may be exaggerated for illustrative clarity. Additionally, like reference numbers are utilized to refer to like elements through the discussions of various examples.
The discussion will now refer to various example illustrations provided to enhance the understanding of the various aspects of the present disclosure. It should be understood that the scope of this disclosure is not limited by the specific characteristics of the examples provided and discussed herein.
A surgical retraction system 10 is shown in
As depicted, the retraction system 10 may include one or more rail clamps 60. Each rail clamp 60 may be secured to a horizontal rail 62 located on each side of a conventional operating table. A post 70 may extend vertically from a secured rail clamp 60 to provide support for a cross bar 80. The cross bar 80 may be secured to one of the posts 70 by a universal joint clamp 82. In addition, one or more lateral arms 90 may be secured to post 70 via another universal clamp 82. The cross bar 80 and the one or more lateral arms 90 generally define a frame 92 to which retractors 30 may be secured.
Referring now to
As shown, the blade 50 may comprise a blade body 56 having a proximal end 54 to which the handle 40 is attached and a distal end 52 to be inserted into the patient 20. The blade body 56 and distal end 52 are configured to contact a patient. In particular, as noted above, the distal end 52 may engage a bone structure or another internal, anatomical feature of the patient 20. The blade body 56 may provide a bottom surface 58 configured to engage and retract anatomy tissue proximate incision 22.
In the embodiment depicted, the proximal end 54 of the blade 50 is integrally attached to the handle 40. In other embodiments, the handle 40 may be a separate component that has been permanently attached to the proximal end 54 of the blade 50. In yet other embodiments, the proximal end 54 may include a connector (not shown) such as, for example, a connection nipple. The connection nipple may permit detachably securing the handle 40 to the proximal end 54 of the blade 50.
The blade body 56 may include a lower blade portion 60 and an upper blade portion 70. The lower blade portion 60 may be hook-shaped, which aids in engaging and/or securing the distal end 52 of the blade 50 to a bone structure or other internal structure of the patient 20. In particular, the lower blade portion 60 may be curved upwardly and the distal end 52 may be pointed such that the distal end 52 and an upper surface 62 of the lower blade portion 60 may engage and hook under a bone structure or other internal structure of the patient 20.
The upper blade portion 70 may be curved downwardly. Thus, the upper blade portion 70 is curved in the opposite direction as the lower blade portion 60. Such opposite curvature of the lower and upper blade portions 60, 70 results in the blade body 56 have a generally S-shaped side profile as best shown in
As shown, the handle 40 may include a proximal end 42 and a distal end 44. The distal end 44 may be attached to the proximal end 54 of the blade 50 as discussed above. The proximal end 52 may be configured in a manner that permits attaching or otherwise securing the retractor 30 to the frame of the retraction system 10. To this end, the proximal end 42 may include one or more holes 44 that pass between a top surface 45 and a bottom surface 46 of the handle 40. A screw or other type of fastener may pass through such holes 44 to secure the handle 40 of the retractor 30 directly to the frame of the retraction system 10 or to secure the handle 40 to the frame of the retraction system 10 via an adapter or other connector.
Referring now to
In view of
Referring now to
As shown, the handle adaptor 100 may include an extension arm 110, a hinge 120, a swivel clamp 130, and a stop 140. As depicted in
As shown, the extension arm 110 may pass through a clamp 83 of a universal joint 82 that is used to secure the handle adaptor 100 to the surgical retraction system frame. The clamp 83 may be loosened or disengaged to permit the extension arm 100 to slide and/or rotate with respect to the clamp 83. In particular, when the clamp 83 is disengaged, the extension arm 110 may be pulled away from the clamp 83 in direction D1 to extend a distal end 112 of the arm 110 further from the frame. Furthermore, the extension arm 110 may be pushed toward the clamp 83 in direction D2 to retract the distal end 112 of the arm 110 closer to the frame.
As noted above, the extension arm 110 may have a circular, cross-section. The clamp 83 may likewise have a circular, cross-section. The cross-sections of the extension arm 110 and clamp 83 may permit the extension arm 110 to be rotated freely about axis A1. Such rotation may be used to adjust an orientation of a pivot axis A2 provided by the hinge 120. The extension arm 100 and/or clamp 83 in other embodiments may have non-circular, cross-sections, which permit limited rotation of extension arm 100 about axis A1. For example, an octagonal cross-section may provide eight distinct orientations of the extension arm 110 with respect to the clamp 8 about axis A1.
Thus, while the clamp 83 is disengaged, the orientation of the extension arm 110 with respect to the clamp 83 may be adjusted. Conversely, when the clamp 83 is engaged, the clamp 83 may prevent further extending, retracting, and/or rotating of the extension arm 110. Suitable embodiments of universal joints or clamps for universal joint 82 are described in detail in U.S. Pat. No. 5,897,087 and U.S. Pat. No. 6,033,363, which are incorporated herein by reference.
As shown, the stop 140 may be affixed to a proximal end 114 of the extension arm 110. The stop 140 is generally configured to prevent the extension arm 110 from being inadvertently pulled too far from a disengaged, clamp 83 as the extension arm 110 is extended from the clamp 83. To this end, the stop 140 may have a greater outer circumference than an outer circumference of the extension arm 110 and an inner circumference of the disengaged, clamp 83.
The hinge 120 may be affixed to the distal end 112 of the extension arm 110. In particular, the hinge 120 may comprise a first leaf 122 providing a barrel 124 and a second leaf 126 providing a pin 128. The first leaf 122 may be affixed to the distal end 112 of the extension arm 110 such that the barrel 124 projects from the distal end 112. In one embodiment, the first leaf 122 has an outer circumference that is greater than the outer circumference of the extension arm 110 and the inner circumference of the disengaged, clamp 83. In this manner, the first leaf 122 may function as another stop that prevents the extension arm 110 from being inadvertently pushed too far into the disengaged, clamp 83 as the extension arm 110 is retracted toward the clamp 83.
The pin 128 of the second leaf 126 may pass through the barrel 124 of the first leaf 122. The pin 128 and barrel 124 may cooperate to provide a pivot point that permits the second leaf 126 to rotate about an axis A2 that extends longitudinally along the pin 128 and barrel 124. In this manner, the first and second leaves 122, 126 may form the hinge 120 that permits movement of the clamp 130 in relation to the extension arm 110 about the axis A2. In the depicted embodiment, the first leaf 122 provides the barrel 124 of the hinge 120 and the second leaf 126 provides the pin 128 of the hinge 120. However, in other embodiments, the first leaf 122 may provide the pin 128 and the second leaf 126 may provide the barrel 124.
As shown, the handle adapter 100 further includes the clamp 130. The clamp 130 is generally configured to receive and secure the handle 40, 40′ of a retractor 30, 30′ to the frame via hinge 120 and extension arm 110. To this end, the clamp 130 may include a clamp body 131 having a slot 132 configured to receive a handle 40, 40′ of a retractor 30, 30′ and a screw 135 configured to engage a surface of the handle 40, 40′. In particular, the slot 132 of the clamp body 131 may be defined by an proximal surface 133 and a distal surface 134 that respectively align with an upper surface and lower surface of the handle 40, 40′ when such a handle is inserted into the slot 132. The screw 135 may extend through a distal end 138 of the clamp body 131 such that the screw 135 passes through the proximal surface 133 of the slot 132. Tightening the screw 135 may cause a tip 136 of the screw 135 to advance into the slot 132, engage an upper surface of the handle 40, 40′, and clamp the handle 40, 40′ between the tip 136 and the distal surface 134 of the slot 132.
As shown, the screw 135 may include an enlarged head or knob 137 opposite its tip 136, which may permit hand tightening and loosening of the screw 135. As such, the handle 40, 40′ may be secured in the clamp 130 without the need of an external tool such as a screwdriver or wrench.
While the knob 137 of screw extends beyond the distal end 138 of the clamp body 131, the proximal end 139 of the clamp body 131 is secured to the second leaf 126 of the hinge 120. In this manner, the clamp body 131 may pivot with respect to the extension arm 110 about the axis A2. In order to permit greater flexibility in positioning the retractor 30, 30′, the proximal end 139 of the clamp body 131 is secured to the second leaf 126 via a swivel connection 140 as best shown in
While the foregoing has been described with reference to certain aspects and examples, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the scope of the disclosure. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the disclosure without departing from its scope. Therefore, it is intended that the disclosure not be limited to the particular example(s) disclosed, but that the disclosure will include all examples falling within the scope of the appended claims.
