Suture anchor and suture anchor installation tool

• US 20060229671A1
• Filed: 04/08/2005
• Published: 10/12/2006
• Est. Priority Date: 04/08/2005
• Status: Abandoned Application

• Current Assignee: Musculoskeletal Transplant Foundation
• Original Assignee: Musculoskeletal Transplant Foundation
• Inventors: Chavista, Cesar D., Steiner, Anton J., Shock, James, Knight, David I.
• Application Number:
  US11/101,569
• Publication Number:
  US 20060229671A1
• 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 2017/0404 Buttons
• CPC Class Codes: A61B 2017/0409 Instruments for applying suture anchors
• CPC Class Codes: A61B 2017/0414 having a suture-receiving opening, e.g. lateral opening

Abstract

A sterile suture anchor comprising a body with a distal end, tapered planar side walls and a dome shaped proximal end, a cross section of said body forming a triangular shape with at least one rounded end; and a suture aperture transversely cut through the body being dimensioned to hold at least one suture. An insertion tool for inserting the suture anchor through a substantially cylindrical bore hole in a live human bone and causing the suture anchor to be anchored comprises a handle, a hollow tube secured to the handle and a driver rod slidably mounted in the tube. The driver rod has a distal end defining an angled cam which engages a suture anchor mounted in said tube and rotates the suture anchor into a desired position for insertion into human tissue. A finger driver assembly is mounted on the handle and is secured to the driver and so that movement of the finger driver assembly causes the driver rod to be moved within the hollow tube causing the driver rod cam end to engage the suture anchor and turn the suture anchor in a predetermined orientation for anchoring in the bore hole.

Claims

1. A sterile suture anchor comprising:

a body with a distal end, tapered planar side walls and a dome shaped proximal end,

a cross section of said body forming a triangular shape with at least one rounded end; and

a suture aperture transversely cut through said body portion being dimensioned to hold at least one suture.

2. A sterile suture anchor according to claim 1 wherein said planar side walls form an angle of about 60°

.

3. A sterile suture anchor according to claim 1 wherein said suture aperture is located nearer said proximal end than said distal end.

4. A sterile suture anchor according to claim 1 wherein said distal end has an outer surface with an area which is greater than an area of said proximal end.

5. A sterile suture anchor according to claim 1 wherein said each of said side walls intersect said distal end to form a sharp end corner.

6. A sterile suture anchor according to claim 1 wherein said suture anchor is constructed of ceramic.

7. A sterile suture anchor according to claim 6 wherein said ceramic is taken from a group consisting of tri-calcium phosphate and hydroxylapatite.

8. A sterile suture anchor as claimed in claim 1 wherein said suture anchor is constructed of allograft bone.

9. A sterile suture anchor as claimed in claim 1 wherein said suture anchor is constructed of xenograft bone.

10. A sterile suture anchor as claimed in claim 1 wherein said suture anchor is constructed of plastic.

11. A sterile suture anchor as claimed in claim 1 wherein said suture anchor is constructed of metal.

12. A sterile suture anchor as claimed in claim 11 wherein said suture anchor metal is titanium.

13. A sterile suture anchor as claimed in claim 11 wherein said suture anchor metal is stainless steel.

14. A sterile suture anchor as claimed in claim 8 wherein said allograft bone is cortical human bone.

15. A sterile suture anchor comprising:

an allograft bone body with a first distal end, said distal end having length greater than the width of a bore into which it is to be mounted, tapered planar sides extending from said distal surface and inclined toward each other so that planes formed on each side planar surface will intersect to form an angle less than 90°

, said tapered planar sides terminating in a rounded proximal end with a cross section of said body having substantially triangular configuration; and

an aperture transversely cut through said bone body dimensioned to hold at least one suture located in a central section of said bone body.

16. A sterile suture anchor as claimed in claim 15 wherein said angle is about 60°

.

17. A sterile suture anchor as claimed in claim 15 wherein an intersection of said distal surface and said tapered planar side walls forms sharp end edges and said distal end has a radially rounded outer surface.

18. A sterile suture anchor as claimed in claim 15 wherein the length of said distal end is greater than the distance from an outer surface of said distal end to the furthest out surfaces of said rounded proximal end.

19. A sterile suture anchor as claimed in claim 15 wherein said central aperture is circular and ranges from about 1.4 mm to about 1.8 mm in diameter.

20. A sterile suture anchor as claimed in claim 15 wherein said central aperture is nearer said first distal end than said proximal end.

21. A sterile suture anchor as claimed in claim 15 wherein said rounded proximal end is dome shaped.

22. An insertion tool for inserting a suture anchor into a substantially cylindrical hole in a live human bone and causing said suture anchor to be anchored in said live human bone, said insertion tool comprising;

a handle defining grip means and an internal cavity;

a hollow tube secured to said handle,

a driver rod slidably mounted to said tube, said driver rod having a distal end defining an angled cam which engages a suture anchor mounted in said hollow tube to rotate said suture anchor into a desired position for insertion into human tissue;

a driver assembly mounted on said handle and seated in said internal cavity, said driver assembly comprising a body, said driver rod being secured to said driver assembly body so that movement of said driver assembly causes said driver rod to be moved within said hollow tube causing said driver rod cam end to engage said suture anchor and turn said suture anchor in a predetermined orientation.

23. An insertion tool as claimed in claim 22 wherein said driver rod is spring biased opposite from the movement caused by said driver assembly.

24. An insertion tool as claimed in claim 22 wherein said cam end defines an angle of about 30°

.

25. An insertion tool as claimed in claim 22 wherein said handle is constructed of plastic.

26. An insertion tool as claimed in claim 22 wherein said driver assembly body has a concave outer surface with a plurality of parallel ribs formed thereon and a channel running along the length of said body to hold a suture.

27. An insertion tool as claimed in claim 22 wherein said driver assembly body is secured to said insertion rod by screw means.

28. An insertion tool for inserting a suture anchor in a substantially cylindrical hole cut a live human bone and causing a predetermined orientation of said suture anchor in said live human bone, said insertion tool comprising;

a handle body defining grip means and an internal cavity and a suture channel along an outer surface of said handle body;

a hollow tube secured to said handle body with the proximal end of said tube leading to said handle internal cavity, a distal end of said hollow tube defining opposing slots therein;

a driver rod slidably mounted to said tube, said driver rod defining a cam end which engages a suture anchor mounted in said tube and rotates said suture anchor into a desired position for mounting in said live human bone,

a finger driver assembly mounted in said handle cavity, said finger driver assembly comprising a body, means to secure said driver rod to said body so that movement of said body causes said driver rod to be moved within said tube to engage said a suture anchor placed in said hollow tube; and

spring biasing means mounted in said handle cavity adjacent said driver rod and engaging said finger driver body to urge said driver rod back to an original position.

29. An insertion tool as claimed in claim 28 wherein said cam end defines an angle of about 30°

.

30. An insertion tool as claimed in claim 28 wherein said handle defines suture holding means and a suture guide channel.

31. An insertion tool as claimed in claim 28 wherein said finger driver assembly has a concave outer surface with a plurality of parallel ribs formed thereon.

32. An insertion tool as claimed in claim 28 wherein said finger driver assembly is secured to said driver rod by a set screw which is mounted in said finger driver body and engages said driver rod.