Quadriceps tendon stripper
View Patent ↗A cutting implement includes a V-shaped blade portion that defines an aperture through which a quadriceps tendon may pass as a doctor harvests the tendon through a minimally invasive procedure.
1. A surgical instrument comprising:
a handle portion; and
a blade portion joined to the handle portion, the blade portion comprising:
a first cutting surface;
a second cutting surface joined to the first cutting surface to form a V-shape having a point and a wide portion, such that the cutting surfaces slant up and back from the point, the first and second cutting surfaces defining an aperture extending through the blade portion; and
a top portion extending across the wide portion of the V-shape, the top portion having a handle side proximate the handle portion, the top portion having a front edge opposite the handle side, and the point of the blade portion extending away from the handle portion past the front edge of the top portion; and
a spacer selectively positionable beneath the top portion to space the top portion from a work piece being cut by the first and second cutting surfaces.
2. The surgical instrument of claim 1 wherein the blade portion comprises a steel blade portion.
3. The surgical instrument of claim 1 wherein the first and second cutting surfaces comprise serrated cutting surfaces.
4. The surgical instrument of claim 1 further comprising a third cutting surface movably positioned on the top portion such that in a first position the third cutting surface extends past the front edge of the top portion and is available to cut and in a second position the third cutting surface is retracted and not available to cut.
5. The surgical instrument of claim 1 wherein the first and second cutting surfaces are adapted to cut a quadriceps tendon and in so doing, pass a cut portion of the quadriceps tendon through the aperture.
6. The surgical instrument of claim 1 wherein the top portion does not include a cutting surface.
7. The surgical instrument of claim 1 further comprising a second cutting element positioned within the blade portion and adapted to reciprocate along a longitudinal axis of the surgical instrument.
8. The surgical instrument of claim 1 wherein the aperture through the blade portion is configured such that a workpiece may pass through the blade portion and out underneath the handle portion.
9. A surgical kit comprising:
a spacer;
a guide adapted to assist a surgeon in creating a bone plug extract from a patella; and
a cutting instrument comprising:
a handle portion; and
a blade portion joined to the handle portion, the blade portion comprising:
a first cutting surface;
a second cutting surface joined to the first cutting surface to form a V-shape having a point and a wide portion, such that the cutting surfaces slant up and back from the point, the first and second cutting surfaces defining an aperture extending through the blade portion; and
a top portion extending across the wide portion of the V-shape, the top portion having a handle side proximate the handle portion, the top portion having a front edge opposite the handle side, and the point of the blade portion extending away from the handle portion past the front edge of the top portion; and
wherein the spacer is selectively positionable beneath the top portion to space the top portion from a work piece being cut by the first and second cutting surfaces.
10. The surgical kit of claim 9 wherein the first and second cutting surfaces are serrated.
11. The surgical kit of claim 9 wherein the spacer is adapted to fit underneath the top portion and space the top portion from a quadriceps tendon while the cutting surfaces are cutting the quadriceps tendon.
12. The surgical kit of claim 9 wherein the guide comprises at least one post adapted to be positioned within a hole in the patella.
13. The surgical kit of claim 9 wherein the spacer comprises a polymeric material.
14. A surgical instrument comprising:
a handle portion;
a blade portion joined to the handle portion, the blade portion comprising:
a first cutting surface;
a second cutting surface joined to the first cutting surface to form a V-shape having a point and a wide portion, such that the cutting surfaces slant up and back from the point, the first and second cutting surfaces defining an aperture extending through the blade portion; and
a top portion extending across the wide portion of the V-shape; and
a second cutting element positioned within the blade portion and adapted to reciprocate along a longitudinal axis of the surgical instrument.
15. The surgical instrument of claim 14 wherein the blade portion comprises a steel blade portion.
16. The surgical instrument of claim 14 wherein the first and second cutting surfaces comprise serrated cutting surfaces.
17. The surgical instrument of claim 14 wherein the first and second cutting surfaces are adapted to cut a quadriceps tendon and in so doing, pass a cut portion of the quadriceps tendon through the aperture.
18. The surgical instrument of claim 14 wherein the top portion does not include a cutting surface.
19. A surgical instrument comprising:
a handle portion; and
a blade portion joined to the handle portion, the blade portion comprising:
a first cutting surface;
a second cutting surface joined to the first cutting surface to form a V-shape having a point and a wide portion, such that the cutting surfaces slant up and back from the point, the first and second cutting surfaces defining an aperture extending through the blade portion; and
a top portion extending across the wide portion of the V-shape; and
a third cutting surface movably positioned on the top portion, such that in a first position the third cutting surface extends past the front edge of the top portion and is available to cut and in a second position the third cutting surface is retracted and not available to cut.
20. The surgical instrument of claim 19 wherein the blade portion comprises a steel blade portion.