Push-in suture anchor, insertion tool, and method for inserting a push-in suture anchor

• US 7,320,701 B2
• Filed: 06/02/2003
• Issued: 01/22/2008
• Est. Priority Date: 06/02/2003
• Status: Active Grant

• Current Assignee: Linvatec Corporation (Jefferies Financial Group, Inc.)
• Original Assignee: Linvatec Corporation (Jefferies Financial Group, Inc.)
• Inventors: Paiste, Mark, Keane, Michael Francis, Reimels, William, Haut, Traci
• Primary Examiner(s): Hayes; Michael J.
• Assistant Examiner(s): Mendoza; Michael G.
• Application Number:
  US10/453,444
• Publication Number:
  US 20040243178A1
• Time in Patent Office: 1,695 Days
• Field of Search: 606/232, 606/72
• 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 17/0469 Suturing instruments for use in minimally invasive surgery, e.g. endoscopic surgery
• CPC Class Codes: A61B 2017/0409 Instruments for applying suture anchors
• CPC Class Codes: A61B 2017/0412 having anchoring barbs or pins extending outwardly from suture anchor body
• CPC Class Codes: A61B 2017/0414 having a suture-receiving opening, e.g. lateral opening
• CPC Class Codes: A61B 2017/0419 H-fasteners
• CPC Class Codes: A61B 2017/0427 having anchoring barbs or pins extending outwardly from the anchor body
• CPC Class Codes: A61F 2/0811 Fixation devices for tendons or ligaments
• CPC Class Codes: A61F 2002/0858 Fixation of tendon or ligament between anchor and bone, e.g. interference screws, wedges
• 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 toggling suture anchor, insertion tool, and method for anchoring at least one suture thread to a bone are provided. The toggling suture anchor is anchored by operation of the insertion tool, the suture anchor including a shaft having a longitudinal axis, a distal end, a proximal end, at least one eyelet hole to receive the suture thread, and at least one suture groove to provide a location to guide the suture thread while inserting the suture anchor into the bone; and at least one locking wing extending radially from the shaft, the locking wing being provided on one side of a first plane, the first plane including the longitudinal axis of the suture anchor.

Claims

1. A toggling suture anchor for anchoring at least one suture thread to a bone, the toggling suture anchor being anchored by operation of an insertion tool having a longitudinal tool axis, the suture anchor comprising:

a shaft having a longitudinal axis, a distal end, a proximal end, at least one eyelet hole positioned starting at a first distance from the distal end to receive the suture thread, and at least one suture groove extending parallel to the longitudinal axis of the shaft to provide a location to guide the suture thread while inserting the suture anchor into the bone;

a front part extending from the distal end of the shaft and having an apex on the longitudinal axis and a base having an insertion tool engagement surface, the base being positioned parallel to the distal end of the shaft; and

at least one locking wing extending radially from the shaft, the at least one locking wing having a narrow end positioned about the first distance from the distal end and a wide end positioned at the proximal end, the locking wing tapering from the narrow end to the wide end being provided on one side of a first plane through the longitudinal axis, wherein during use of the insertion tool to insert the anchor in the bone, the longitudinal tool axis is parallel to the longitudinal axis of the suture anchor.

2. The suture anchor according to claim 1, wherein the engagement surface is configured to engage with an interface surface of the insertion tool.

3. The suture anchor according to claim 2, wherein the front part is cone shaped.

4. The suture anchor according to claim 1, wherein the proximal end of the shaft is acutely angled toward the distal end with respect to the longitudinal axis of the suture anchor.

5. The suture anchor according to claim 1, wherein the at least one locking wing includes a single locking wing extending radially from the shaft.

6. The suture anchor according to claim 5, wherein the engagement surface is configured to engage with an interface surface of the insertion tool.

7. The suture anchor according to claim 6, wherein the front part is cone shaped.

8. The suture anchor according to claim 7, wherein the proximal end of the shaft is acutely angled toward the distal end with respect to the longitudinal axis of the suture anchor.

9. The suture anchor according to claim 1, wherein the at least one eyelet hole is arranged off the longitudinal axis of the suture anchor.

10. The suture anchor according to claim 1, wherein the shaft of the suture anchor further includes at least one stabilizing rib to stabilize the suture anchor when coupled to the insertion tool.

11. The suture anchor according to claim 1, wherein the suture anchor includes at least one of a non-toxic and bio-compatible polymer, a polymer alloy, a fiber reinforced polymer composite, a metal, ceramic, copolymer, polymer mixture, and a bio-absorbable material.

12. A toggling suture anchor for anchoring at least one suture thread to a bone, the toggling suture anchor being anchored by operation of an insertion tool, the suture anchor comprising:

a shaft having a longitudinal axis, a distal end, a proximal end, at least one eyelet hole to receive the suture, and at least one suture groove extending parallel to the longitudinal axis of the shaft to provide a location to guide the suture thread while inserting the suture anchor into the bone; and

a front part extending from the distal end of the shaft and having an apex on the longitudinal axis and a base having an insertion tool engagement surface, the base being positioned parallel to the distal end of the shaft,

wherein the distal end of the shaft is perpendicular with respect to the longitudinal axis and the proximal end of the shaft is acutely angled toward the distal end with respect to the longitudinal axis of the suture anchor.

13. The suture anchor according to claim 12, wherein the engagement surface is configured to engage with an interface surface of the insertion tool.

14. The suture anchor according to claim 13, wherein the front part is cone shaped.

15. The suture anchor according to claim 12, wherein the shaft of the suture anchor further includes at least one stabilizing rib to stabilize the suture anchor when coupled to the insertion tool.

16. The suture anchor according to claim 12, wherein the suture anchor includes at least one of a non-toxic and bio-compatible polymer, a polymer alloy, a fiber reinforced polymer composite, a metal, ceramic, copolymer, polymer mixture, and a bio-absorbable material.

17. A toggling suture anchor for anchoring at least one suture thread to a bone, the toggling suture anchor being anchored by operation of an insertion tool, the suture anchor comprising:

a shaft having a longitudinal axis, a distal end, a proximal end, at least one eyelet hole positioned starting at a first distance from the distal end to receive the suture thread, and at least one stabilizing rib configured to contact an inner surface of a cylindrical distal end of the insertion tool to stabilize the suture anchor when coupled to the insertion tool;

a front part extending from the distal end of the shaft and having an apex on the longitudinal axis and a base having an insertion tool engagement surface, the being positioned parallel to the distal end of the shaft; and

at least one locking wing extending radially from the shaft, the at least one locking wing having a narrow end positioned about the first distance from the distal end and a wide end positioned at the proximal end, the locking wing tapering from the narrow end to the wide end being provided on one side of a first plane through the longitudinal axis of the suture anchor.

18. The suture anchor according to claim 17, wherein the engagement surface is configured to engage with an interface surface of the insertion tool.

19. The suture anchor according to claim 18, wherein the front part is cone shaped.

20. The suture anchor according to claim 17, wherein the proximal end of the shaft is acutely angled toward the distal end with respect to the longitudinal axis of the suture anchor.

21. The suture anchor according to claim 17, wherein the at least one locking wing includes a single locking wing extending radially from the shaft.

22. A toggling suture anchor for anchoring at least one suture thread to a bone, the toggling suture anchor being anchored by operation of an insertion tool, the suture anchor comprising:

a shaft having

a longitudinal axis,

a distal end,

a proximal end acutely angled toward the distal end with respect to the longitudinal axis of the suture anchor,

at least one eyelet hole arranged starting at a first distance from the distal end off the longitudinal axis of the suture anchor to receive the suture thread,

at least one suture groove extending parallel to the longitudinal axis of the shaft to provide a location to guide the suture thread while inserting the suture anchor into the bone,

at least one stabilizing rib configured to contact an inner surface of a cylindrical distal end of the insertion tool to stabilize the suture anchor when coupled to the insertion tool;

a cone-shaped front part extending from the distal end of the shaft and having an apex on the longitudinal axis and a base having an insertion tool engagement surface, the base being positioned parallel to the distal end of the shaft; and

a single locking wing extending radially from the shaft, the single locking wing having a narrow end positioned about the first distance from the distal end and a wide end positioned at the proximal end, the locking wing tapering from the narrow end to the wide end being provided on one side of a first plane through the longitudinal axis of the suture anchor, said one side being opposite a side of the first plane through which the at least one eyelet hole extends perpendicularly.

23. An anchoring system for anchoring at least one suture thread to a bone, the anchoring system comprising:

an insertion tool having a longitudinal tool axis; and

a toggling suture anchor configured to be coupled to the insertion tool, the suture anchor including

a shaft having a longitudinal axis, a distal end, a proximal end, at least one eyelet hole positioned starting at a first distance from the distal end to receive the suture, and at least one suture groove extending parallel to the longitudinal axis of the shaft to provide a location to guide the suture thread while inserting the suture anchor into the bone;

a front part extending from the distal end of the shaft and having an apex on the longitudinal axis and a base having an insertion tool engagement surface, the base being positioned parallel to the distal end of the shaft; and

at least one locking wing extending radially from the shaft, the at least one locking wing having a narrow end positioned about the first distance from the distal end and a wide end positioned at the proximal end, the locking wing tapering from the narrow end to the wide end being provided on one side of a first plane through the longitudinal axis, wherein during use of the insertion tool to insert the anchor in the bone, the longitudinal tool axis is parallel to the longitudinal axis of the suture anchor.

24. The anchoring system according to claim 23, wherein the at least one locking wing includes a single locking wing extending radially from the shaft.

25. The anchoring system according to claim 24, wherein the engagement surface is configured to engage with an interface surface of the insertion tool.

26. The anchoring system according to claim 25, wherein the front part is cone shaped.