Rotational securing of a suture

• US 20080086138A1
• Filed: 10/06/2006
• Published: 04/10/2008
• Est. Priority Date: 10/06/2006
• Status: Active Grant

• Current Assignee: Biomet Manufacturing, LLC (Zimmer Biomet Holdings, Inc.)
• Original Assignee: Arthrotek Incorporated (Zimmer Biomet Holdings, Inc.)
• Inventors: Sauer, Julie L., Denham, Gregory J., Stone, Kevin T.
• Granted Patent: US 7,674,276 B2
• 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 2017/00407 Ratchet means
• CPC Class Codes: A61B 2017/044 with a threaded shaft, e.g. screws
• CPC Class Codes: A61B 2017/045 snug fit within the anchor
• CPC Class Codes: A61B 2017/0453 threaded elements, e.g. set screws
• CPC Class Codes: Y10T 24/3967 Bolt perpendicular to cable axis

Abstract

A suture fixation apparatus having a first body portion having a bone engaging feature to fixedly engage a bony tissue and a second body portion defining an eyelet for receipt of a suture. The second body portion is rotatable with respect to the first body portion. Rotating the second body portion causes the suture to form a twist to frictionally secure the suture.

Claims

1. A suture anchor, comprising:

a first body portion having a bone engaging feature to fixedly engage a bony tissue; and

a second body portion defining an eyelet for receipt of a suture where engaging the second body portion rotates the eyelet with respect to the first body portion;

wherein rotation of the second body portion causes the suture to form a twist to frictionally secure the suture.

2. The suture anchor according to claim 1, wherein the second body portion is located at a proximal end of the suture anchor.

3. The suture anchor according to claim 1, wherein the first body portion defines a recess.

4. The suture anchor according to claim 3, wherein the second body portion is at least partially contained in the recess.

5. The suture anchor according to claim 3, wherein the second body portion is fully contained in the recess.

6. The suture anchor according to claim 3, wherein the second body portion is contained in the recess such that a proximal end of the second body portion and a proximal end of the first body portion are substantially flush.

7. The suture anchor according to claim 3, wherein the recess provides a clearance to receive the twist.

8. The suture anchor according to claim 1, wherein the suture anchor comprises a drive end to receive a driver and advance the suture anchor by a technique selected from the group consisting of:

impacting, screwing, pushing, and combinations thereof.

9. The suture anchor according to claim 1, further comprising a ratcheting mechanism to provide one-directional movement of the second body portion with respect to the first body portion.

10. The suture anchor according to claim 9, wherein the ratcheting mechanism comprises at least one ridge located on one of the first body portion and said second body portion and at least one pawl disposed opposite the ridge located on the other of the first body portion and the second body portion.

11. The suture anchor according to claim 10, further comprising a plurality of ridges and a plurality of pawls.

12. The suture anchor according to claim 1, wherein the first body portion comprises a suture receiving opening in communication with the eyelet.

13. A suture anchor comprising:

a first body portion having a first suture receiving channel; and

a second body portion having a second suture receiving channel;

wherein the first suture receiving channel and the second suture receiving channel have an aligned position to provide a continuous passage for movement of a suture therebetween and the first suture receiving channel with respect to the second suture receiving channel are adapted to be rotated into a deployed position to misalign the first suture receiving channel and the second suture receiving channel to prevent movement of the suture therebetween.

14. The suture anchor according to claim 13, further comprising an interface wherein a first mating surface of the first body portion engages a second mating surface of the second body portion.

15. The suture anchor according to claim 14, wherein the first mating surface comprises a first threaded region having a first thread and the second mating surface comprises a second threaded region having a second thread mated to the first thread;

wherein engaging the first threaded region and the second threaded region moves the suture anchor into a deployed position and lodges the suture between the first mating surface and the second mating surface.

16. The suture anchor according to claim 15, wherein the first body portion threaded region is offset from the first body suture receiving channel and the second body threaded region is offset from the second body suture receiving channel.

17. The suture anchor according to claim 13, where in the continuous suture receiving channel is aligned along the longitudinal axis of the suture anchor.

18. The suture anchor according to claim 13, wherein the first body portion comprises an eyelet.

19. The suture anchor according to claim 13, wherein the continuous suture receiving channel is aligned along the transverse axis of the suture anchor.

20. A suture anchor comprising:

a threaded suture anchor body having a bone engaging surface feature to fixedly engage a bony tissue where the suture anchor body has a proximal end and a distal end; and

a rotatable base having an eyelet where the rotatable base and the eyelet are located on an interior region of the threaded suture anchor body and are distal to the suture anchor body proximal end;

wherein rotation of the rotatable base causes the suture to form a twist to frictionally secure the suture.