Composite anchor

• US 8,771,315 B2
• Filed: 12/07/2009
• Issued: 07/08/2014
• Est. Priority Date: 12/15/2008
• Status: Active Grant

• Current Assignee: Smith & Nephew Incorporated (Smith & Nephew PLC)
• Original Assignee: Smith & Nephew Incorporated (Smith & Nephew PLC)
• Inventors: Lunn, Richard M., Paulk, David A.
• Primary Examiner(s): Woo, Julian W
• Application Number:
  US12/632,220
• Publication Number:
  US 20100152773A1
• Time in Patent Office: 1,674 Days
• Field of Search: 606/232, 606/300, 606/317, 606/321
• 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 2017/044 with a threaded shaft, e.g. screws
• CPC Class Codes: A61B 2017/0445 cannulated, e.g. with a longitudinal through-hole for passage of an instrument
• CPC Class Codes: A61B 2017/0448 Additional elements on or within the anchor
• CPC Class Codes: A61B 2017/0451 Cams or wedges holding the suture by friction
• CPC Class Codes: A61B 2017/0458 Longitudinal through hole, e.g. suture blocked by a distal suture knot
• CPC Class Codes: A61B 2017/0464 for soft tissue

Abstract

The present disclosure relates to a composite anchor. The anchor includes a cannulated proximal portion having a threaded outer surface and a distal portion coupled to the proximal portion, the distal portion including a top portion, a bottom portion, and a through hole, wherein the top portion is configured to be disposed within the cannulation of the proximal portion.

Claims

1. A composite anchor system comprising:

a composite anchor comprising;

a cannulated proximal portion comprising a threaded outer surface and inner surface;

a distal portion coupled to the proximal portion, the distal portion comprising a top portion, a bottom portion, and a through hole, wherein the top portion is configured to be disposed within the cannulation of the proximal portion;

wherein the top portion of the distal portion comprises at least two sides and a middle portion formed between the at least two sides;

wherein the through hole is positioned distal to the proximal portion, the through hole being in communication with the cannulation of the proximal portion via a channel adjacent to the middle portion; and

a driver configured to engage a substantial length of the inner surface of the proximal portion.

2. The anchor of claim 1 wherein the bottom portion is substantially cone-shaped.

3. The anchor of claim 1, wherein the at least two sides are substantially trapezoid-shaped and the middle portion is substantially round.

4. The anchor of claim 1 wherein the anchor further comprises at least one suture disposed within the through hole and extending through the cannulation of the proximal portion.

5. The anchor of claim 1 wherein both the proximal portion and the distal portion include absorbable material.

6. The anchor of claim 1 wherein the proximal portion includes absorbable material and the distal portion includes non-absorbable material.

7. The anchor of claim 6 wherein the absorbable material includes a polymer material and the non-absorbable material includes a polymer material.

8. The anchor of claim 6 wherein the absorbable material includes a polymer material and the non-absorbable material includes a metal material.

9. The anchor of claim 1 wherein the proximal portion and the distal portion are coupled by way of an interference fit.

10. The anchor of claim 1 wherein the proximal portion and the distal portion are coupled by way of a sonic weld.

11. A composite anchor system comprising:

a composite anchor comprising;

an absorbable cannulated proximal portion comprising a threaded outer surface and inner surface;

a non-absorbable distal portion coupled to the absorbable cannulated proximal portion, the non-absorbable distal portion comprising a top portion, a bottom portion, and a through hole, wherein the top portion is configured to be disposed within the cannulation of the absorbable cannulated proximal portion;

wherein the top portion of the non-absorbable distal portion comprises at least two sides and a middle portion formed between the at least two sides;

wherein the through hole is positioned distal to the absorbable proximal portion, the through hole being in communication with the cannulation of the absorbable proximal portion via a channel adjacent to the middle portion; and

a driver configured to engage a substantial length of the inner surface of the absorbable cannulated proximal portion.