KNOTLESS SUTURE FIXATION DEVICE AND METHOD

• US 20110004242A1
• Filed: 07/01/2009
• Published: 01/06/2011
• Est. Priority Date: 07/01/2009
• Status: Abandoned Application

• Current Assignee: Robert P. Stchur
• Original Assignee: Robert P. Stchur
• Inventors: Stchur, Robert P.
• Application Number:
  US12/496,073
• Publication Number:
  US 20110004242A1
• 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 2017/0409 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 2017/0432 the separate member staying in the anchor after placement
• CPC Class Codes: A61B 2017/0433 the anchor or the separate member comprising threads, e.g. a set screw or a worm gear for moving spreading members
• CPC Class Codes: A61B 2017/0437 the barbs being resilient or spring-like
• CPC Class Codes: A61B 2017/0438 slotted, i.e. having a longitudinal slot for enhancing their elasticity
• CPC Class Codes: A61B 2017/0441 the shaft being a rigid coil or spiral
• CPC Class Codes: A61B 2017/0446 Means for attaching and blocking the suture in the suture anchor
• CPC Class Codes: A61B 2017/0453 threaded elements, e.g. set screws

Abstract

A knotless suture fixation device (1) and method having a anchor (2) with a top portion (4), a middle portion (5) and a bottom portion (6). The top portion having at least two wings (7) and the bottom portion having an aperture (8) that passes through the anchor. The interior of the middle portion is threaded to accept a screw (3). The screw pushes against the wings to spread the wings outward as the screw is tightened. An opening (29) between the middle portion of the anchor and the bottom portion of the anchor allows the screw to pass through the aperture and make contact with a tip (10) of the anchor as the screw is tightened, thereby locking any sutures that have been inserted through the aperture in place. In an alternative embodiment, the anchor may have one or more press fit ridges (31) instead of wings.

Claims

1. A knotless suture fixation device comprising:

an anchor having a securing means, a threaded interior surface, a tip and an aperture through which at least one suture is passed;

a screw having a head, a tip and a threaded body which is inserted into the anchor, thereby engaging the threaded interior surface of the anchor; and

an opening between said threaded interior surface and aperture that allows the tip of the screw to pass through the aperture and make contact with the at least one suture and the tip of the anchors thereby locking said suture in the tip of the anchor.

2. The knotless suture fixation device of claim 1 wherein;

the securing means for the anchor comprises at least two wings.

3. The knotless suture fixation device of claim 2 further comprising:

stress points located at the bottom of said at least two wings.

5. The knotless suture fixation device of claim 1 wherein:

the head of said screw is tapered.

6. The knotless suture fixation device of claim 2 wherein:

the head of said screw is tapered.

7. The knotless suture fixation device of claim 1 wherein:

the head of said screw has at least one locking tooth.

8. The knotless suture fixation device of claim 2 wherein:

the head of said screw has at least one locking tooth.

9. The knotless suture fixation device of claim 5 wherein:

the head of said screw has at least one locking tooth.

10. The knotless suture fixation device of claim 6 wherein:

the head of said screw has at least one locking tooth.

11. The knotless suture fixation device of claim 1 wherein:

said tip of said screw has a raised edge.

12. The knotless suture fixation device of claim 2 wherein:

said tip of said screw has a raised edge.

13. The knotless suture fixation device of claim 1 wherein:

said tip of said screw is conical.

14. The knotless suture fixation device of claim 2 wherein:

said tip of said screw is conical.

16. The knotless suture fixation device of claim 1 wherein:

the securing means for the anchor comprises at least one press fit ridge

15. A knotless suture fixation device comprising:

an anchor having a securing means, a threaded interior surface, a tip and an aperture through which at least one suture is passed;

a screw having a head, a tip and a threaded body which is inserted into the anchor, thereby engaging the threaded interior surface of the anchor; and

an opening between said threaded interior surface and aperture that allows the tip of the screw to pass through the aperture and make contact with the at least one suture and the tip of the anchor, thereby locking said suture in the tip of the anchor.

17. The knotless suture fixation device of claim 15 wherein:

said tip of said screw has a raised edge.

18. The knotless suture fixation device of claim 15 wherein:

said tip of said screw is conical.

19. The knotless suture fixation device of claim 15 wherein:

the head of said screw has at least one locking tooth.

20. A method for securing atom tendon to a bone using a knotless suture fixation device comprising an anchor having a securing means, a threaded interior surface, a tip and an aperture through which at least one suture is passed, a screw having a head, a tip and a threaded body which is inserted into the anchor, thereby engaging the threaded interior surface of the anchor and an opening between said threaded interior surface and aperture that allows the tip of the screw to pass through the aperture and make contact with the at least one suture and the tip of the anchor, thereby locking said suture in the tip of the anchor comprising the steps of:

a. passing at least one suture having two ends through a torn tendon;

b. making a hole in a predetermined location on a bone;

c. passing the two ends of said at least one suture through an aperture in a anchor;

d. placing the anchor and the suture into the hole in the bone so that the top of the anchor sits below the surface of the bone; and

e. tightening a screw into the anchor thereby securing the at least one suture in the anchor and securing the anchor in the bone.

21. The method of claim 20 wherein step b further comprises:

using a punch to make the hole in a predetermined location on a bone.

22. The method of claim 20 wherein step b further comprises:

using a drill to make the hole in a predetermined location on a bone.

23. The method of claim 20 further comprising a step after step d of:

placing tension on the at least one suture to pull the torn tendon into a desired position on the bone.