METHOD AND APPARATUS FOR RE-ATTACHING THE LABRUM OF A HIP JOINT

• US 20090198274A1
• Filed: 09/22/2008
• Published: 08/06/2009
• Est. Priority Date: 09/20/2007
• Status: Abandoned Application

• Current Assignee: Stryker Corporation
• Original Assignee: Stryker Corporation
• Inventors: Pamichev, Chris, Dewey, Jonathan, Kelly, Bryan, Flom, James R., Frushell, Matthew
• Application Number:
  US12/235,416
• Publication Number:
  US 20090198274A1
• Time in Patent Office: Days
• US Class Current: 606/232
• CPC Class Codes: A61B 17/0401 Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors A61B17/0642 takes precedence; fixation devices for tendons or ligaments A61F2/0811
• CPC Class Codes: A61B 2017/0414 having a suture-receiving opening, e.g. lateral opening lateral eyelet for attaching suture to needle A61B2017/06019
• CPC Class Codes: A61B 2017/0446 Means for attaching and blocking the suture in the suture anchor
• CPC Class Codes: A61B 2017/0448 Additional elements on or within the anchor
• CPC Class Codes: A61B 2017/0453 threaded elements, e.g. set screws
• CPC Class Codes: A61B 2017/0456 Surface features on the anchor, e.g. ribs increasing friction between the suture and the anchor
• 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 2002/0888 Anchor in or on a blind hole or on the bone surface without formation of a tunnel

Abstract

A system for securing soft tissue to bone, the system comprising:

• • a center post anchor comprising a body adapted for disposition in bone and having a retention element thereon for retaining the body in bone, the center post anchor comprising a suture having a first portion secured to the body and a second portion residing free of the body and adapted to be passed through the soft tissue which is to be secured to the bone; and
  • a bridge post anchor comprising a body adapted for disposition in bone and having a retention element thereon for retaining the body in bone, the bridge post anchor including a capture element for capturing the second portion of the suture to the bone, such that when the center post anchor is disposed in bone and the second portion of the suture extends through in bone can secure the soft tissue to the bone.

Claims

1. A system for securing soft tissue to bone, the system comprising:

a center post anchor comprising a body adapted for disposition in bone and having a retention element thereon for retaining the body in bone, the center post anchor comprising a suture having a first portion secured to the body and a second portion residing free of the body and adapted to be passed through the soft tissue which is to be secured to the bone; and

a bridge post anchor comprising a body adapted for disposition in bone and having a retention element thereon for retaining the body in bone, the bridge post anchor including a capture element for capturing the second portion of the suture to the bone, such that when the center post anchor is disposed in bone and the second portion of the suture extends through the soft tissue, disposition of the bridge post anchor in bone can secure the soft tissue to the bone.

2. A system according to claim 1 wherein the soft tissue comprises the labrum.

3. A system according to claim 1 wherein the bone comprises the acetabulum.

4. A system according to claim 1 wherein the retention element of the center post anchor comprises a pair of legs extending from the body, wherein the legs taper outwardly along their length so that the center post anchor has a diameter at the legs which is larger than the diameter of the body, and further wherein the legs are inwardly compressible.

5. A system according to claim 4 wherein the legs of the center post anchor extend distally from the body.

6. A system according to claim 4 wherein the legs of the center post anchor extend proximally from the body.

7. A system according to claim 1 wherein the retention element of the bridge post anchor comprises a pair of legs extending from the body, wherein the legs taper outwardly along their length so that the bridge post anchor has a diameter at the legs which is larger than the diameter of the body, and further wherein the legs are inwardly compressible.

8. A system according to claim 7 wherein the legs of the bridge post anchor extend distally from the body.

9. A system according to claim 7 wherein the legs of the bridge post anchor extend proximally from the body.

10. A system according to claim 1 wherein the capture element of the bridge post anchor comprises a slot formed in the bridge post anchor.

11. A system according to claim 1 wherein the second portion of the suture has a needle attached thereto.

12. A system according to claim 1 wherein the suture comprises a third portion secured to the body and a fourth portion residing free of the body and adapted to be passed soft tissue which is to be secured to the bone, and further wherein the system further comprises a second bridge post anchor for securing the fourth portion of the suture to the bone.

13. A system according to claim 1 wherein the capture element of the bridge post anchor comprises a suture spool movably mounted to the body of the bridge post anchor.

14. A system according to claim 13 wherein the suture spool is rotatable so as to cinch the suture.

15. A system according to claim 13 wherein the suture spool is longitudinally movable relative to the body so as to cinch the suture.

32. A system according to claim 12 wherein the first portion of the suture, the second portion of the suture, the third portion of the suture and the fourth portion of the suture are all formed integral with one another so as to constitute a single filament.

33. A system according to claim 12 wherein the first portion of the suture and the second portion of the suture are formed integral with one another so as to constitute a first filament, and further wherein the third portion of the suture and the fourth portion of the suture are formed integral with one another so as to constitute a second filament, with the first filament and the second filament being separate from one another.

16. A method for securing soft tissue to bone, the method comprising:

providing a system comprising;

a center post anchor comprising a body adapted for disposition in bone and having a retention element thereon for retaining the body in bone, the center post anchor comprising a suture having a first portion secured to the body and a second portion residing free of the body and adapted to be passed through the soft tissue which is to be secured to the bone; and

a bridge post anchor comprising a body adapted for disposition in bone and having a retention element thereon for retaining the body in bone, the bridge post anchor including a capture element for capturing the second portion of the suture to the bone, such that when the center post anchor is disposed in bone and the second portion of the suture extends through the soft tissue, disposition of the bridge post anchor in bone can secure the soft tissue to the bone;

inserting the center post anchor into the bone;

passing the second portion of the suture through the soft tissue;

cinching the suture so as to draw the soft tissue against the bone; and

securing the second portion of the suture to the bone by inserting the bridge post anchor into the bone, with the capture element capturing the second portion of the suture to the bone.

17. A method according to claim 16 wherein the soft tissue comprises the labrum.

18. A method according to claim 16 wherein the bone comprises the acetabulum.

19. A method according to claim 16 wherein the retention element of the center post anchor comprises a pair of legs extending from the body, wherein the legs taper outwardly along their length so that the center post anchor has a diameter at the legs which is larger than the diameter of the body, and further wherein the legs are inwardly compressible.

20. A method according to claim 19 wherein the legs of the center post anchor extend distally from the body.

21. A method according to claim 19 wherein the legs of the center post anchor extend proximally from the body.

22. A method according to claim 16 wherein the retention element of the bridge post anchor comprises a pair of legs extending from the body, wherein the legs taper outwardly along their length so that the bridge post anchor has a diameter at the legs which is larger than the diameter of the body, and further wherein the legs are inwardly compressible.

23. A method according to claim 22 wherein the legs of the bridge post anchor extend distally from the body.

24. A method according to claim 22 wherein the legs of the bridge post anchor extend proximally from the body.

25. A method according to claim 16 wherein the capture element of the bridge post anchor comprises a slot formed in the bridge post anchor.

26. A method according to claim 16 wherein the second portion of the suture has a needle attached thereto.

27. A method according to claim 16 wherein the suture comprises a third portion secured to the body and a fourth portion residing free of the body and adapted to be passed soft tissue which is to be secured to the bone, and further wherein the system further comprises a second bridge post anchor for securing the fourth portion of the suture to the bone.

28. A method according to claim 16 wherein the capture element of the bridge post anchor comprises a suture spool movably mounted to the body of the bridge post anchor.

29. A method according to claim 28 wherein the suture spool is rotatable so as to cinch the suture.

30. A method according to claim 28 wherein the suture spool is longitudinally movable relative to the body so as to cinch the suture.

34. A method according to claim 16 wherein the first portion of the suture, the second portion of the suture, the third portion of the suture and the fourth portion of the suture are all formed integral with one another so as to constitute a single filament.

31. A system for attaching soft tissue to bone, the system comprising:

a center post anchor comprising a body having a distal end and a proximal end, a pair of legs extending distally from the distal end of the body and separated by a slot, the legs tapering outwardly along their length so that the center post anchor has a diameter at the legs which is larger than the diameter at the body, with the legs being inwardly compressible, and a suture attached to the proximal end of the body, the suture having at least one free end associated therewith; and

at least one bridge post anchor comprising a body having a distal end and a proximal end, and a pair of legs extending from the distal end of the body and separated by a slot, the legs tapering outwardly along their length so that the bridge post anchor has a diameter at the legs which is larger than the diameter at the body, with the legs being inwardly compressible;

such that the center post anchor can be secured in a hole in a bone by compressing its legs inwardly, deploying the center post anchor in the bone and releasing its legs so that they thereafter engage the bone, whereby to secure the suture to the bone;

and further such that the bridge post anchor can capture the free end of the suture to bone by positioning the free end of the suture in the slot, compressing the legs of the bridge post anchor inwardly, positioning the bridge post anchor in a hole in the bone, and releasing its legs so that they thereafter engage the bone.

35. A system according to claim 31 wherein the first portion of the suture and the second portion of the suture are formed integral with one another so as to constitute a first filament, and further wherein the third portion of the suture and the fourth portion of the suture are formed integral with one another so as to constitute a second filament, with the first filament and the second filament being separate from one another.