Device and method of fastening a graft to a bone

• US 20040260296A1
• Filed: 06/18/2003
• Published: 12/23/2004
• Est. Priority Date: 06/18/2003
• Status: Active Grant

• Current Assignee: Biomet Manufacturing, LLC (Zimmer Biomet Holdings, Inc.)
• Original Assignee: Biomet Sports Medicine LLC (Zimmer Biomet Holdings, Inc.)
• Inventors: Meridew, Jason D., Kaiser, Ryan A.
• Granted Patent: US 7,255,700 B2
• Time in Patent Office: Days
• US Class Current: 623/13.11
• CPC Class Codes: A61F 2/0811 Fixation devices for tendons or ligaments
• CPC Class Codes: A61F 2002/0829 without deformation of anchor parts, e.g. fixation screws on bone surface, extending barbs, cams, butterflies, spring-loaded pins
• CPC Class Codes: A61F 2002/0864 Fixation of tendon or ligament between anchor elements, e.g. by additional screws in the anchor, anchor crimped around tendon
• CPC Class Codes: A61F 2002/0882 Anchor in or on top of a bone tunnel, i.e. a hole running through the entire bone

Abstract

A device and method for fastening one or more graft strands to a bone. The device may include a first member having a first opening and a second member having a second opening. The first member may include a plurality of radial projections defining recesses, wherein each graft is separately received in a corresponding recess. The device may also include a fastener passing through the first and second openings. The fastener may have a first portion engaging the first member and a second portion received into the bone, such that tightening the fastener against the first member compresses the graft strands between opposing faces of the first and second members.

Claims

1. A device for fastening one or more graft strands to a bone, the device comprising:

a first member having a first opening, the first member including a plurality of radial projections defining recesses therebetween, wherein each graft is operable to be separately received in a corresponding recess;

a second member having a second opening; and

a fastener passing through the first and second openings, the fastener having a first portion engaging the first member and a second portion received into the bone, such that tightening the fastener against the first member compresses the graft strands between opposing faces of the first and second members.

2. The device of claim 1, wherein the first portion of the fastener threadably engages the radial projections of the first member.

3. The device of claim 2, wherein the first portion of the fastener engages the second member.

4. The device of claim 1, wherein the opposing faces of the first and second members include protuberances extending therefrom.

5. The device of claim 4, wherein another face of the first member includes protuberances extending therefrom.

6. The device of claim 5, wherein the protuberances of the first and second members are wedge-shaped.

7. The device of claim 1, wherein the fastener comprises a resorbable material.

8. The device of claim 7, wherein the resorbable material is selected from the group consisting of metal, LactoSorb®

and bone.

9. The device of claim 8, wherein the first and second members comprise a second resorbable material.

10. The device of claim 9, wherein the resorbable material is selected from one of metal, LactoSorb®

and bone.

11. The device of claim 1, wherein the fastener includes a head.

12. The device of claim 11, wherein a top portion of the head is removable.

13. The device of claim 11, wherein the second member includes a countersunk portion engaging a portion of the fastener'"'"'s head.

14. The device of claim 1, wherein the first and second portions of the fastener are received in a tunnel in the bone.

15. The device of claim 14, wherein the first and second members are countersunk in the tunnel.

16. The device of claim 14, wherein the fastener is sized for positioning co-axially in the tunnel.

17. The device of claim 14, wherein the first and second members are substantially perpendicular to the tunnel.

18. The device of claim 1, wherein the second member is integral with the fastener.

19. The device of claim 1, wherein the first and second members are substantially planar.

20. The device of claim 1, wherein the graft is an ACL replacement graft.

21. The device of claim 1, wherein the first member has a profile selected from the group consisting of flat, curved, tapered, L-shaped and U-shaped.

22. The device of claim 1, wherein the fastener is fully threaded.

23. The device of claim 1, wherein at least a portion of the fastener is threaded.

24. The device of claim 1, wherein the second portion of the fastener is cannulated and includes holes therethrough.

25. The device of claim 1, wherein each radial projection includes a slot engaging a rib that extends radially from the first portion of the fastener.

50. The device of claim 1, wherein at least a portion of the fastener is cannulated.

51. The device of claim 1, wherein the second member has at least one aperture therethrough.

26. A device for fastening one or more graft strands to a bone, the device comprising:

an annular member having a central opening, the annular member including a plurality of radial projections defining recesses therebetween, wherein each graft is operable to be separately received in a corresponding recess; and

a fastener having a head and a body, the body passing through the central opening of the annular member, the body having a first portion engaging the annular member and a second portion received into the bone, such that tightening the fastener against the annular member compresses the graft strands between opposing faces of the annular member and the head of the fastener.

27. The device of claim 26, wherein the head of the fastener includes a break-away portion.

28. The device of claim 26, wherein a face of the annular member includes protuberances.

29. The device of claim 26, wherein the annular member includes at least one outer peripheral formation.

30. The device of claim 26, wherein the annular member includes an outer tab.

31. The device of claim 26, wherein the annular member includes at least one top spike.

32. The device of claim 31, wherein the top spike is received in an aperture of the head of the fastener.

33. The device of claim 26, wherein the annular member includes at least one bottom spike.

34. The device of claim 26, wherein the fastener is entirely received into a tunnel in the bone.

35. The device of claim 26, wherein the head of the fastener includes protuberances facing the annular member.

36. The device of claim 26, wherein the annular member has a circular shape.

37. The device of claim 26, wherein the annular member has a non-circular shape.

52. The device of claim 26, wherein the head of the fastener has at least one aperture therethrough.

38. A method for fastening a plurality of graft strands to a tunnel in a bone, the method comprising:

pulling the graft strands through the tunnel and into a central opening of a first member;

inserting the graft strands into corresponding recesses radiating from the central opening;

inserting a fastener through the first member and into the tunnel; and

compressing the graft strands between the first member and the fastener.

39. The method of claim 38, further comprising pulling the first member up the graft strands to position the first member in a countersunk portion of the tunnel.

40. The method of claim 38, where inserting the fastener includes threadably engaging the fastener with the first member.

41. The method of claim 38, further comprising inserting the fastener through an opening of a second member prior to inserting through the first member.

42. The method of claim 41, wherein compressing includes holding the graft strands between a plurality of protuberances in opposing faces of the first and second members.

43. The method of claim 41, further comprising engaging the second member with the fastener.

44. A method for fastening a plurality of graft strands to a bone, the method comprising:

drilling a bore for a fastener into the bone;

pulling the graft strands through a first opening in the first member and into corresponding radial recesses that extend from the first opening;

positioning the first member into the counter bore;

inserting the fastener through a second opening of the second member into the bore;

engaging a threaded portion of the fastener with a portion of the first member; and

compressing the graft strands between the first and second members.

45. The method of claim 44, further comprising drilling a counter bore for receiving first and second members into the bone.

46. The method of claim 44, wherein inserting includes coaxially aligning the fastener with the bore.

47. The method of claim 44, further comprising plugging a portion of the tunnel with an unthreaded portion of the fastener.

48. The method of claim 47, wherein inserting includes inserting the threaded and unthreaded portions of the fastener into the tunnel.

49. The method of claim 48, wherein inserting includes inserting a portion of the head of the fastener into a countersunk portion of the second member.