Suture anchor

• US 8,623,052 B2
• Filed: 07/02/2013
• Issued: 01/07/2014
• Est. Priority Date: 04/06/2004
• Status: Active Grant

• Current Assignee: Arthrex Incorporated
• Original Assignee: Arthrex Incorporated
• Inventors: Dreyfuss, Peter J., Benavitz, William C.
• Primary Examiner(s): Dornbusch, Dianne
• Application Number:
  US13/933,575
• Publication Number:
  US 20130296937A1
• Time in Patent Office: 189 Days
• Field of Search: 606/232, 606/74, 606/300, 606/309, 606/312, 411/320, 411/142, 411/199, 411/216, 411/356, 411/357, 411/76, 411/350, 411/555
• 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: Y10T 29/49947 by applying separate fastener

Abstract

A suture anchor assembly includes an anchor having a proximal end, a length extending along a longitudinal axis, and a cavity that extends at least partially along the length from an opening located at the proximal end. A portion of the cavity is defined by opposite spaced wall surfaces. A rigid support is fixed at the wall surfaces against relative movement of the anchor along the longitudinal axis, and the rigid support extends across the cavity and between the wall surfaces. The suture anchor assembly further includes a tissue securing suture looped over the rigid support including ends that extend out of the opening. The suture anchor assembly includes a driver having a cannula having a proximal opening. The driver is receivable in a portion of the cavity, and the ends of the at least one tissue securing suture extend out of the proximal opening of the cannula.

Claims

1. A suture anchor assembly comprising:

an anchor body having a distal end, a proximal end, a length extending along a central longitudinal axis of the anchor body, and an internal central cavity, wherein the internal central cavity extends about the central longitudinal axis, extends at least partially along the length of the anchor body and extends from an opening located at the proximal end of the anchor body, wherein an external helical thread extends at least partially around the internal central cavity;

a rigid member fixed by the anchor body against relative movement along the central longitudinal axis of the anchor body, wherein the rigid member extends across the internal central cavity, wherein the rigid member has a first dimension that is generally parallel to the central longitudinal axis of the anchor body and a second dimension that is generally perpendicular to the central longitudinal axis of the anchor body, and the second dimension is longer than the first dimension;

at least one tissue securing suture looped over the rigid member, wherein the at least one tissue securing suture includes a first end and a second end that extend out of the opening located at the proximal end of the anchor body; and

a driver having a cannula, wherein the cannula has a distal opening and a proximal opening, the driver engaging the anchor body through a portion of the internal central cavity, and wherein the first end and the second end of the at least one tissue securing suture extend out of the proximal opening of the cannula.

2. The suture anchor assembly as recited in claim 1 wherein the portion of the internal central cavity is defined by a first planar cavity face and a second planar cavity face that are both generally parallel to the central longitudinal axis of the anchor body, and the driver engages the first planar cavity face and the second planar cavity face.

3. The suture anchor assembly as recited in claim 2 wherein the driver includes a first planar driver face and a second planar driver face, and the first planar driver face engages the first planar cavity face, and the second planar driver face engages the second planar cavity face.

4. The suture anchor assembly as recited in claim 1 wherein the internal central cavity is defined by a first interior surface and a second interior surface spaced opposite to the first interior surface, and the rigid member extends from the first interior surface to the second interior surface.

5. The suture anchor assembly as recited in claim 1 wherein the anchor body has a wall portion, a first side of the wall portion defining a portion of the external helical thread and a second side of the wall portion defining the portion of the internal central cavity.

6. The suture anchor assembly as recited in claim 5 wherein the wall portion extends circumferentially around the central longitudinal axis.

7. The suture anchor assembly as recited in claim 5 wherein the wall portion surrounds the internal central cavity and the at least one tissue securing suture.

8. The suture anchor assembly as recited in claim 5 wherein the at least one tissue securing suture is received in an access opening defined between the rigid member and a surface of the wall portion.

9. The suture anchor assembly as recited in claim 1 wherein the external helical thread extends around the proximal end.

10. A suture anchor assembly comprising:

an anchor having a distal end, a proximal end, a length extending along a longitudinal axis of the anchor, and a cavity, wherein the cavity extends at least partially along the length of the anchor and extends from an opening located at the proximal end of the anchor, and a portion of the cavity is defined by a first wall surface and a second wall surface spaced opposite to the first wall surface;

a rigid support fixed at the first wall surface and the second wall surface against relative movement of the anchor along the longitudinal axis of the anchor, wherein the rigid support extends across the cavity and between the first wall surface and the second wall surface, wherein the rigid support has a first dimension that is generally parallel to the longitudinal axis of the anchor body and a second dimension that is generally perpendicular to the longitudinal axis of the anchor body, and the second dimension is longer than the first dimension;

at least one tissue securing suture looped over the rigid support, wherein the at least one tissue securing suture includes a first end and a second end that extend out of the opening located at the proximal end of the anchor; and

a driver having a cannula, wherein the cannula has a distal opening and a proximal opening, the driver is receivable in a portion of the cavity, and the first end and the second end of the at least one tissue securing suture extend out of the proximal opening of the cannula.

11. The suture anchor assembly as recited in claim 10 wherein the cannula at least partially encloses the at least one tissue securing suture.

12. The suture anchor assembly as recited in claim 10 wherein the portion of the cavity is defined by a first planar cavity face and a second planar cavity face that are both generally parallel to the longitudinal axis of the anchor body, and the driver engages the first planar cavity face and the second planar cavity face.

13. The suture anchor assembly as recited in claim 12 wherein the driver includes a first planar driver face and a second planar driver face, and the first planar driver face of the driver engages the first planar cavity face, and the second planar driver face of the driver engages the second planar cavity face.

14. The suture anchor assembly as recited in claim 10 wherein the anchor body has a wall portion, a first side of the wall portion defining a portion of an external helical thread and a second side of the wall portion defining the portion of the cavity.

15. The suture anchor assembly as recited in claim 14 wherein the wall portion extends circumferentially around the longitudinal axis.

16. The suture anchor assembly as recited in claim 14 wherein the wall portion surrounds the cavity and the at least one tissue securing suture.

17. The suture anchor assembly as recited in claim 14 wherein the at least one tissue securing suture is received in an access opening defined by the rigid support and the wall portion.

18. The suture anchor assembly as recited in claim 10 wherein the external helical thread extends around the proximal end.