HOLLOW BODY ANCHOR

• US 20160317140A1
• Filed: 05/01/2015
• Published: 11/03/2016
• Est. Priority Date: 05/01/2015
• Status: Active Grant

• Current Assignee: Iii, L. Pearce Mccarty
• Original Assignee: Iii, L. Pearce Mccarty
• Inventors: McCarty, L. Pearce III
• Granted Patent: US 10,085,736 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• 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 17/1637 Hollow drills or saws producing a curved cut, e.g. cylindrical A61B10/025, A61B17/1695 take precedence
• CPC Class Codes: A61B 17/1655 for tapping
• 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 2017/044 with a threaded shaft, e.g. screws

Abstract

Attachment of sutures to bone is achieved by forming a recess in the bone having a cylindrical channel surrounding a bone core and then inserting a hollow anchor body into the recess and over the bone core. Suture material is attached using openings in the anchor body and the suture material may be pinched between the inside and outside surfaces of the anchor body and the bone material.

Claims

1. A suture anchor designed to be secure within a recess prepared in bone, said recess (i) extending inwardly from an exposed surface of the bone, (ii) comprising a cylindrical hole extending inwardly from the exposed surface to a base and surrounding a bone core extending from the base toward the exposed surface of the bone, and (iii) defining an inner bone surface and an outer bone surface, said suture anchor comprising an anchor body having an open top, an open bottom, a cylindrical wall generally extending from the open top to the open bottom and defining an inner engagement surface surrounding a channel and an outer engagement surface, wherein the suture anchor body is adapted to permit at least a portion of the cylindrical wall to be inserted into the cylindrical hole of the recess such that the bone core resides in the channel, the outer engagement surface engages the outer bone surface of the recess and the inner engagement surface engages the inner bone surface.

2. The suture anchor of claim 1 further comprising at least one orifice extending through the cylindrical wall between the inner engagement surface and the outer engagement surface.

3. The suture anchor of claim 1 wherein the cylindrical wall has a flange adapted to engage an insertion tool coupled to the suture anchor.

4. The suture anchor of claim 1 wherein said outer engagement surface includes a plurality of ridges.

5. The suture anchor of claim 1 wherein said inner engagement surface includes a plurality of ridges.

6. The suture anchor of claim 1 wherein said outer engagement surface and said inner engagement surface each include a plurality of ridges.

7. The suture anchor of claim 1 wherein said outer engagement surface includes threads.

8. The suture anchor of claim 1 wherein said inner engagement surface includes threads.

9. The suture anchor of claim 1 wherein said inner engagement surface and said outer engagement surface each include threads.

10. The suture anchor of claim 1 wherein said anchor body has a cylindrical extension projecting distally from a flange, and said suture anchor further comprised hollow cylindrical cap adapted to be loaded with suture material and adapted to receive the cylindrical extension, said cap having a proximal end which engages the flange when the cap is coupled to the anchor body.

11. The suture anchor of claim 1 further including suture material coupled to the bone by the anchor body.

12. For anchoring at least one suture to a bone, a kit comprising

(a) a recess forming tool adapted to form a recess in a bone, said recess comprising a cylindrical hole extending inwardly from an exposed surface of the bone to a base and surrounding a bone core having an inner bone surface extending from the base toward the exposed surface of the bone, said recess further comprising an outer bone surface surrounding the cylindrical hole;

(b) at least one suture member;

(c) a suture anchor comprising an anchor body having an open top, an open bottom, a cylindrical wall extending from the open top to the open bottom and defining an inner engagement surface surrounding a channel and an outer engagement surface, wherein the anchor body is adapted to permit at least a portion of the cylindrical wall to be inserted into the cylindrical hole of the recess such that the bone core resides in the channel, the outer engagement surface engages the outer bone surface of the recess, and the inner engagement surfaces engages the inner bone surface; and

(d) an insertion tool adapted to be coupled to the suture anchor for insertion of at least a portion of the cylindrical body into the recess and then decoupled from the suture anchor.

13. The kit of claim 12 wherein said anchor body has a cylindrical extension projecting distally from a flange, and said kit further comprises a hollow cylindrical cap adapted to be loaded with at least one suture member and adapted to receive the cylindrical extension, said cap having a proximal end which engages the flange when the cap is coupled to the anchor body.

14. The kit of claim 12 wherein said insertion tool has a second channel in communication with the channel of the suture anchor when the insertion tool is coupled to the suture anchor.

15. The kit of claim 14 wherein said insertion tool has a passageway extending from the second channel through in outer surface of the insertion tool.

16. The kit of claim 12 wherein the anchor body is adapted to be placed in a recess formed in a bone by the recess forming tool and, upon placement of the suture anchor in the recess, a first portion of said suture member is adapted to be sandwiched between the outer engagement surface of the suture anchor and the outer bone surface, and a second portion of the suture anchor is adapted to be sandwiched between the inner engagement surface and the inner bone surface thereby anchoring the suture member to the bone.

17. The kit of claim 12 wherein said suture anchor further comprises an opening extending through the cylindrical wall between the outer engagement surface and the inner engagement surface.

18. The kit of claim 12 wherein said suture anchor has threads on at least one of the inner engagement surface and outer engagement surface.

19. The kit of claim 12 wherein said suture anchor has a plurality of ridges on at least one of the inner engagement surface and outer engagement surface

20. A method for anchoring a suture member to a bone at an anchor point comprising the steps of:

a. forming a recess in an exposed surface of the bone, said recess having a cylindrical hole extending into the bone from the exposed surface to a base, said cylindrical hole defining an outer bone surface and also defining a bone core defining an inner bone surface projecting from the base toward the exposed surface, said bone core surrounded by said cylindrical hole;

b. providing an anchor body having an open top, an open bottom, and a cylindrical wall extending between the open top and open bottom, said cylindrical wall defining (i) an inner engagement surface surrounding a channel in communication with the open top and open bottom and (ii) an outer engagement surface;

c. providing at least one suture member adapted to be coupled to said anchor body;

d. inserting the anchor body and at least one suture member within the cylindrical hole such that the inner engagement surface engages the inner bone surface and the outer engagement surface engages the outer bone surface, and the suture member includes a first portion pinched between the inner engagement surface and the inner bone surface and a second portion pinched between the outer engagement surface and the outer bone surface.