Self-locking suture anchor

• US 20050149122A1
• Filed: 02/07/2005
• Published: 07/07/2005
• Est. Priority Date: 08/10/1999
• Status: Active Grant

• Current Assignee: Dennis Mcdevitt, Dr. Jeffrey L. Halbrecht, Richard Caspari
• Original Assignee: Dennis Mcdevitt, Dr. Jeffrey L. Halbrecht, Richard Caspari
• Inventors: McDevitt, Dennis, Halbrecht, Jeffrey, Caspari, Richard
• Granted Patent: US 9,510,816 B2
• 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 2017/00862 elastic or resilient
• CPC Class Codes: A61B 2017/0403 Dowels
• CPC Class Codes: A61B 2017/0408 Rivets
• 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 2017/0424 the separate member staying in the anchor after placement
• CPC Class Codes: A61B 2017/0427 having anchoring barbs or pins extending outwardly from the anchor body
• CPC Class Codes: A61B 2017/0438 slotted, i.e. having a longitudinal slot for enhancing their elasticity
• CPC Class Codes: A61B 2017/044 with a threaded shaft, e.g. screws
• CPC Class Codes: A61B 2017/045 snug fit within the anchor
• 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: A61B 2090/037 with a frangible part, e.g. by reduced diameter
• CPC Class Codes: A61B 90/03 Automatic limiting or abutting means, e.g. for safety
• CPC Class Codes: A61F 2/0811 Fixation devices for tendons or ligaments
• CPC Class Codes: A61F 2002/0882 Anchor in or on top of a bone tunnel, i.e. a hole running through the entire bone

Abstract

A tissue anchor having a length of filament held so that an applied force greater than a threshold force will cause the filament to move longitudinally, while an applied force less than the threshold force will not move the filament, and methods of attaching soft tissue to bone using such an anchor.

Claims

1. A device for anchoring a filament to tissue or bone, comprising:

a first component adapted to be embedded in bone and having a cavity formed therein;

a second component receivable within the first component such that the first and second components are effective to retain a filament therebetween, the second component including a frangible portion that is adapted to shear during deployment of the device into bone.

2. The device of claim 1, wherein the second component includes a flange formed on a terminal end thereof, the flange having an outer diameter that is greater than an inner diameter of the cavity in the first component.

3. The device of claim 2, wherein the flange is formed on a distal end of the second component, and the frangible portion is formed on a proximal end of the second component.

4. The device of claim 1, further comprising an elongate deployment member attached to the second component by the frangible portion, wherein the frangible portion is adapted to shear upon application of a force applied to the elongate deployment member.

5. The device of claim 1, further comprising a filament extending through the cavity in the first component and disposed between the first and second components.

6. The device of claim 1, wherein the first and second components are adapted to retain a filament therebetween by an interference fit.

7. A device for anchoring a filament to tissue or bone, comprising:

an anchor having first and second components adapted to retain a suture therebetween, the second component being receivable within the first component; and

an elongate shaft frangibly attached to the second component for inserting the second component into the first component.

8. The device of claim 7, wherein the second component includes a flange formed on a terminal end thereof and adapted to abut a terminal end of the first component.

9. The device of claim 8, wherein the flange is formed on a distal end of the second component, and a proximal end of the second component is frangibly attached to the elongate shaft.

10. The device of claim 7, wherein the elongate shaft is frangibly attached to the second component by a frangible portion that is adapted to shear upon application of a force applied to the elongate shaft.

11. A suture anchor, comprising:

an elongate anchor element adapted to be embedded in bone and having a cavity formed therein with opposite open ends;

an elongate insertion element adapted to be received within the cavity in the elongate anchor element;

a suture extending through at least a portion of the cavity and positioned between the elongate anchor member and the elongate insertion element; and

an elongate shaft frangibly attached to the elongate insertion element for inserting the elongate insertion element into the first component.

12. The suture anchor of claim 11, wherein the insertion element and the elongate anchor element are adapted to hold the suture therebetween by a compression fit.

13. A suture anchor, comprising:

an anchor element adapted to be embedded in bone and having a cavity formed therein;

an insertion element adapted to be received within the cavity in the anchor element, the insertion element including a flange formed on a terminal end thereof and adapted to abut a portion of the anchor element; and

an elongate shaft frangibly attached to the elongate insertion element for inserting the elongate insertion element into the first component.

14. The suture anchor of claim 13, wherein the cavity includes opposite open ends.

15. The suture anchor of claim 13, wherein the anchor element and the insertion element are adapted to retain a suture therebetween.

16. The suture anchor of claim 13, wherein the anchor element and the insertion element are adapted to retain a suture therebetween by compression fit.