SOFT TISSUE RETENTION DEVICES, INSTRUMENTATION AND RELATED METHODS
Soft tissue retention devices, instrumentation and related methods are disclosed. The devices include a first member having a first head portion and a first shaft portion, the first head portion and the first shaft portion defining a cannulated opening that extends at least partially through the first member, and a second member having a second head portion and a second shaft portion extending from an inner side of the second head portion, the second head portion and the second shaft portion defining a cannulated opening that extends at least partially through the second member.
1 . A device for retaining soft tissue to a bone, the device comprising:
a first member comprising a washer portion, a first head portion and a first shaft portion, the first head portion and the first shaft portion are received by the washer portion and define a cannulated opening that extends at least partially through the first member; and
a second member comprising a second head portion and a second shaft portion extending from an inner side of the second head portion, the second head portion and the second shaft portion define a cannulated opening that extends at least partially through the second member.
2 . The device of claim 1 , wherein the first and second shaft portions each comprise threading and are configured to threadably engage with one another.
3 . The device of claim 2 , wherein the first shaft portion comprises a threading on an exterior surface thereof.
4 . The device of claim 2 , wherein the second shaft portion comprises a threading on an interior surface of the cannulated opening.
5 . The device of claim 2 , wherein the first and second shaft portions share a common longitudinal axis when threadably engaged with one another.
6 . The device of claim 1 , wherein the washer portion comprises a plurality of projections disposed about a perimeter thereof
7 . The device of claim 1 , wherein the washer portion is movably coupled with the first shaft portion.
8 . The device of claim 1 , wherein the washer portion comprises a central opening configured to receive the first shaft portion.
9 . The device of claim 8 , wherein the first shaft portion comprises a first lateral dimension at a first end thereof, wherein the first lateral dimension is greater than a lateral dimension of the central opening of the washer portion.
10 . The device of claim 9 , wherein the washer portion comprises a range of motion of approximately 70-110 degrees defined by a longitudinal axis of the first shaft portion and a plane defined by a top surface of the washer portion.
11 . The device of claim 6 , wherein each of the plurality of projections are substantially equidistant from a central opening of the head portion.
12 . The device of claim 11 , wherein each of the plurality of projections extend from and in a direction substantially orthogonal relative to a bottom surface of the head portion.
13 . The device of claim 8 , wherein the washer portion comprises a plurality of apertures disposed between the perimeter and the central opening.
14 . The device of claim 1 , wherein the second head portion comprises a first protuberance and a second protuberance disposed and extending laterally from substantially opposite sides of the second head portion.
15 . The device of claim 14 , wherein the first and second protuberances extend from the second head portion at an angle substantially orthogonal relative to the second shaft portion.
16 . The device of claim 15 , wherein each of the first and second protuberances comprises an angulation in the direction of the second shaft portion.
17 . The device of claim 14 , wherein each of the first and second protuberances comprise a pair of projections disposed at substantially opposite ends of the first and second protuberances.
18 . The device of claim 17 , wherein each projection of the pair of projections extends toward the first member in a direction substantially orthogonal relative to the first and second protuberances.
19 . The device of claim 1 , wherein the second head portion is integral with the second shaft portion.
20 . A surgical kit, comprising:
a device for retaining soft tissue to a bone, the device comprising:
a first member comprising a first head portion and a first shaft portion, the first head portion and the first shaft portion defining a cannulated opening that extends at least partially through the first member; and
a second member comprising a second head portion and a second shaft portion extending from an inner side of the second head portion, the second head portion and the second shaft portion defining a cannulated opening that extends at least partially through the second member; and
an instrument configured to couple to the device and facilitate implantation of the device to attach soft tissue to bone.