Threaded suture anchor and method of use

• US 7,883,529 B2
• Filed: 10/17/2003
• Issued: 02/08/2011
• Est. Priority Date: 01/25/2002
• Status: Active Grant

• Current Assignee: Stryker Corporation
• Original Assignee: Stryker Orthopaedics (Stryker Corporation)
• Inventors: Chervitz, Alan, Sinnott, M. Mary
• Primary Examiner(s): Manahan; Todd E
• Assistant Examiner(s): BLATT, ERIC D
• Application Number:
  US10/688,746
• Publication Number:
  US 20040093032A1
• Time in Patent Office: 2,671 Days
• Field of Search: 606 72- 74, 606232-233, 606300-331
• 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 2017/0409 Instruments for applying suture anchors for applying suture clamps, clips or locks A61B2017/0488
• 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 2017/044 with a threaded shaft, e.g. screws
• CPC Class Codes: A61B 2017/0445 cannulated, e.g. with a longitudinal through-hole for passage of an instrument
• CPC Class Codes: A61B 2017/0458 Longitudinal through hole, e.g. suture blocked by a distal suture knot
• CPC Class Codes: A61B 2017/0459 Multiple holes in the anchor through which the suture extends and locking the suture when tension is applied
• CPC Class Codes: A61F 2/0811 Fixation devices for tendons or ligaments
• 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 suture anchor includes an elongated shaft having an exterior sidewall extending between a proximal end and an opposing distal end. A helical first thread is wound about and outwardly projects from the exterior sidewall of the shaft so as to extend between the proximal end and the distal end of the shaft. A first suture port transversely extends through at least a portion of the first thread at the proximal end of the shaft. The suture port is configured to receive a suture line.

Claims

1. A tissue retention system comprising:

a suture anchor comprising;

an elongated body having an exterior sidewall, a proximal end and an opposing distal end displaced from the proximal end along a longitudinal axis, wherein a first suture port and a separate second suture port extend through at least a portion of the body and the first suture port is independently fully encircled and uninterrupted by a first interior surface along a portion of its length and the second suture port is independently fully encircled and uninterrupted by a second interior surface along a portion of its length;

a channel near the proximal end of the elongated body, wherein the channel is formed within the exterior sidewall of the elongated body; and

a helical thread wound about and outwardly projecting from the elongated body;

wherein the channel is proximally recessed from the helical thread such that a suture may pass through a path defined by the first suture port, the channel, and the second suture port without intersecting the helical thread;

wherein at least a first portion of the first suture port extends substantially parallel to the longitudinal axis;

wherein the first suture port is spaced apart from the longitudinal axis so as to not intersect the longitudinal axis;

wherein the elongated body is formed as a single, unitary piece.

2. The tissue retention system of claim 1, wherein the first suture port extends distally of a proximal end of the helical thread.

3. The tissue retention system of claim 1, wherein at least a second portion of the first suture port extends nonparallel to the longitudinal axis.

4. The tissue retention system of claim 1, wherein the first and second suture ports are symmetrically arranged about the longitudinal axis.

5. The tissue retention system of claim 1, wherein a bore extends fully through the body along the longitudinal axis, wherein the first suture port is positioned such that the first suture port is not in communication with the bore.

6. The tissue retention system of claim 1, further comprising at least one suture positionable through at least the first suture port.

7. The tissue retention system of claim 1, further comprising a tool configured to interface with the suture anchor to facilitate driving the suture anchor into bone.

8. A tissue retention system comprising:

a suture anchor comprising;

an elongated body having an exterior sidewall, a proximal end and an opposing distal end displaced from the proximal end along a longitudinal axis;

a first suture port and a separate second suture port near the proximal end, wherein the first suture port is independently fully encircled and uninterrupted by a first interior surface along a portion of its length and the second suture port is independently fully encircled and uninterrupted by a second interior surface along a portion of its length, wherein each of the first and second suture ports extends through an exterior sidewall of the elongated body distal to the location;

a channel near the proximal end of the elongated body, wherein the channel is formed within the exterior sidewall of the elongated body; and

a helical thread wound about and outwardly projecting from the elongated body;

wherein the channel is proximally recessed from the helical thread such that a suture may pass through a path defined by the first suture port, the channel, and the second suture port without intersecting the helical thread;

wherein the first and second suture ports are positioned on either side of the longitudinal axis to independently retain first and second suture portions;

wherein the elongated body is formed as a single, unitary piece.

9. The tissue retention system of claim 8, further comprising the first and second suture portions, wherein the first and second suture portions are separate pieces from each other.

10. The tissue retention system of claim 8, wherein at least a portion of each of the first and second suture ports extends distally of a proximal end of the helical thread.

11. The tissue retention system of claim 8, wherein each of the first and second suture ports is displaced from the longitudinal axis so as not to intersect the longitudinal axis.

12. The tissue retention system of claim 11, wherein a bore extends fully through the body along the longitudinal axis, wherein the first and second suture ports are positioned such that the first and second suture ports are not in communication with the bore.

13. The tissue retention system of claim 8, wherein at least one portion of each of the first and second suture ports extends nonparallel to the longitudinal axis, wherein the at least one portion of the first and second suture ports is recessed within the exterior wall of the elongated body.

14. The tissue retention system of claim 8, further comprising at least one suture positionable through at least the first suture port.

15. The tissue retention system of claim 8, further comprising a tool configured to interface with the suture anchor to facilitate driving the suture anchor into bone.

16. A tissue retention system comprising:

a suture anchor comprising;

an elongated body having an exterior sidewall, a proximal end and an opposing distal end displaced from the proximal end along a longitudinal axis, wherein a bore extends along the longitudinal axis through a portion of a longitudinal length of the body, wherein a first suture port extends through at least a portion of the body to receive a suture, wherein the first suture port is positioned such that the first suture port is not in communication with the bore;

a channel near the proximal end of the elongated body, wherein the channel is formed within the exterior sidewall of the elongated body; and

a helical thread wound about and outwardly projecting from the elongated body;

wherein the channel is proximally recessed from the helical thread such that a suture may pass through a path defined by the first suture port, the channel, and the second suture port without intersecting the helical thread;

wherein at least a portion of the bore is shaped to receive a distal end of a driver to facilitate transmission of torque from the driver to the suture anchor;

wherein the elongated body is formed as a single, unitary piece.

17. The tissue retention system of claim 16, wherein the first suture port extends distally of a proximal end of the helical thread.

18. The tissue retention system of claim 16, wherein at least a second portion of the first suture port extends nonparallel to the longitudinal axis.

19. The tissue retention system of claim 16, wherein a second suture port extends through at least the portion of the body, wherein the first and second suture ports are symmetrically arranged about the longitudinal axis.

20. The tissue retention system of claim 16, wherein the bore extends fully through the body along the longitudinal axis.

21. The tissue retention system of claim 16, further comprising at least one suture positionable through at least the first suture port.

22. The tissue retention system of claim 16, further comprising a tool configured to interface with the suture anchor to facilitate driving the suture anchor into bone.

32. The tissue retention system of claim 16, wherein the bore terminates proximal to the distal end.

23. A tissue retention system comprising:

a suture anchor comprising;

an elongated body having an exterior sidewall, a proximal end and an opposing distal end displaced from the proximal end along a longitudinal axis, wherein a first suture port and a second suture port each extend through at least a portion of the elongated body;

a channel near the proximal end of the elongated body, wherein the channel is formed within the exterior sidewall of the elongated body; and

a helical thread wound about and outwardly projecting from the elongated body;

wherein the channel is proximally recessed from the helical thread such that a suture may pass through a path defined by the first suture port, the channel, and the second suture port without intersecting the helical thread;

wherein each of the first and second suture ports is configured to receive an intermediate suture portion such that the first and second suture ports cooperate to provide four parallel suture lengths extending proximally from four apertures of the proximal end, wherein each aperture is fully encircled by an interior surface of the elongated body;

wherein the elongated body is formed as a single, unitary piece.

24. The tissue retention system of claim 23, wherein the first suture port intersects an exterior sidewall of the elongated body so as to communicate with a first opening of the exterior sidewall;

wherein the second suture port intersects the exterior sidewall so as to communicate with a second opening of the exterior sidewall.

25. The tissue retention system of claim 23, wherein a first portion of each of the first and second suture ports extends parallel to the longitudinal axis;

wherein a second portion of each of the first and second suture ports extends nonparallel to the longitudinal axis.

26. The tissue retention system of claim 23, wherein the elongated body has a proximal end face, wherein the first suture port intersects the proximal end face so as to communicate with a first opening of the proximal end face;

wherein the second suture port intersects the proximal end face so as to communicate with a second opening of the proximal end face.

27. The tissue retention system of claim 26, wherein a third suture port intersects the proximal end face so as to communicate with a third opening of the proximal end face, wherein the third suture port adjoins the first suture port so as to facilitate positioning a first intermediate suture portion within the first and third suture ports;

wherein a fourth suture port intersects the proximal end face so as to communicate with a fourth opening of the proximal end face, wherein the fourth suture port adjoins the second suture port so as to facilitate positioning a second intermediate suture portion within the second and fourth suture ports.

28. The tissue retention system of claim 23, wherein the first and second suture ports are symmetrically arranged about the longitudinal axis.

29. The tissue retention system of claim 23, wherein the suture anchor comprises a substantially hexagonal drive feature positioned to receive torque from a tool to facilitate driving the suture anchor into bone.

30. The tissue retention system of claim 23, further comprising at least one suture positionable through at least the first suture port.

31. The tissue retention system of claim 23, further comprising a tool configured to interface with the suture anchor to facilitate driving the suture anchor into bone.