Anchor for securing a suture

• US 8,845,687 B2
• Filed: 09/17/2013
• Issued: 09/30/2014
• Est. Priority Date: 08/19/1996
• Status: Expired due to Fees

• Current Assignee: Bonutti Skeletal Innovations LLC (Acacia Research Corporation)
• Original Assignee: Bonutti Skeletal Innovations LLC (Acacia Research Corporation)
• Inventors: Bonutti, Peter M.
• Primary Examiner(s): DOWE, KATHERINE MARIE
• Application Number:
  US14/029,076
• Publication Number:
  US 20140018853A1
• Time in Patent Office: 378 Days
• Field of Search: 606/232, 606/65, 606/304
• 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 2017/0403 Dowels other bone dowels A61B17/68; dowels for connecting prosthetic parts A61F2002/30433
• CPC Class Codes: A61B 2017/0409 Instruments for applying suture anchors for applying suture clamps, clips or locks A61B2017/0488
• CPC Class Codes: A61B 2017/0412 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 lateral eyelet for attaching suture to needle A61B2017/06019
• CPC Class Codes: A61B 2017/0417 T-fasteners
• CPC Class Codes: A61B 2017/0427 having anchoring barbs or pins extending outwardly from the anchor body
• CPC Class Codes: A61B 2017/0445 cannulated, e.g. with a longitudinal through-hole for passage of an instrument
• CPC Class Codes: A61B 2017/0458 Longitudinal through hole, e.g. suture blocked by a distal suture knot
• CPC Class Codes: A61B 2017/047 having at least one proximally pointing needle located at the distal end of the instrument, e.g. for suturing trocar puncture wounds starting from inside the body J-shaped suture needles A61B2017/0608

Abstract

An anchor, formed of at least two different materials, for securing a suture relative to bone. The anchor includes a generally cylindrical body portion having a leading end configured to facilitate insertion of the body portion into the bone; a passage which is oriented transverse to the longitudinal axis of the body portion and proximate the leading end of the body portion; and bone engaging projections to secure the anchor in the bone.

Claims

1. An anchor for securing a suture relative to bone comprising:

a generally cylindrical body portion having an exterior surface, a leading end configured to facilitate insertion of the body portion into the bone, a trailing end opposite the leading end, and a generally cylindrical opening extending from the trailing end toward the leading end, the generally cylindrical opening having a central axis, the body portion having a length and a central longitudinal axis extending from the leading end to the trailing end, the generally cylindrical opening having a length that is greater than a majority of the length of the body portion, the central axis of the generally cylindrical opening being coaxial with the central longitudinal axis of the body portion;

a passage located proximate the leading end of the body portion for receipt of the suture, the passage having a central axis, the central axis of the passage being oriented transverse to and intersecting both the central longitudinal axis of the body portion and the central axis of the generally cylindrical opening, the anchor being formed of at least two different materials suitable for implantation in bone, a first of the at least two different materials forming a perimeter around the generally cylindrical opening, a second of the at least two different materials forming the leading end; and

bone engaging projections configured to secure the anchor in the bone,

wherein the anchor is structured to permit the suture to be positioned along a majority of the length of the exterior surface of the body portion to secure the suture between the bone and the anchor when the anchor is implanted in the bone.

2. The anchor of claim 1, wherein the trailing end includes a generally flat annular surface transverse to the central longitudinal axis of the body portion.

3. The anchor of claim 1, wherein a cross-section of the suture passage has an uninterrupted perimeter.

4. The anchor of claim 1, wherein the opening is configured to permit at least a portion of a suture to be disposed therein.

5. The anchor of claim 1, wherein the leading end of the body portion is at least in part conical.

6. The anchor of claim 1, further comprising a pointed tip to facilitate piercing the bone.

7. The anchor of claim 1, wherein at least one of the at least two different materials is a polymeric material.

8. The anchor of claim 7, wherein the polymeric material is a copolymer.

9. The anchor of claim 7, wherein the polymeric material is a dipolymer.

10. The anchor of claim 7, wherein the polymeric material is one selected from the group consisting of cellulose, petroglutamic acid, high purity carboxymethylcellulose, a collagen, and a polylactide.

11. The anchor of claim 1, wherein the trailing end is configured to be engaged by a driver.

12. The anchor of claim 1, wherein the body portion is implantable in soft tissue.

13. The anchor of claim 1, wherein the bone engaging projections comprise ribs projecting radially from the exterior surface of the cylindrical body portion.