Knotless instability anchor

Patent metadata

Field	Value
Publication number	US-10105133-B2
Application number	US-201614996381-A
Country	US
Kind code	B2
Filing date	Jan 15, 2016
Priority date	Dec 20, 2011
Publication date	Oct 23, 2018
Grant date	Oct 23, 2018

Abstract

Methods and devices are provided for anchoring suture to bone. In one exemplary embodiment, a suture anchor is provided that includes one or more bone-engaging surfaces features and an external sidewall. The external sidewall can allow a suture coupled to the suture anchor and located between the anchor and bone to be movable relative to the suture anchor, even when the suture anchor is partially or fully disposed within a bone hole. Suture threaders and suture anchor drivers are also provided that can be used with the various methods and devices disclosed herein, or with other methods and devices known in the art.

First claim

What is claimed is:

1. A surgical apparatus, comprising:
a suture anchor having an inner lumen extending therethrough with a smooth external surface extending from a proximal-most end of the suture anchor to a first location that is proximal to a distal-most end of the suture anchor, the suture anchor having a rounded external surface extending from the proximal-most end of the suture anchor to a second location that is proximal to the distal-most end of the suture anchor, the rounded external surface being radially offset from the smooth external surface, the rounded external surface of the suture anchor having a plurality of bone-engaging features formed thereon, the smooth external surface of the suture anchor being free of the plurality of bone-engaging features, the smooth external surface is a single surface and the rounded external surface is a single surface such that the smooth external surface and the rounded external surface define an entire perimeter of the suture anchor, the smooth external surface defines a portion of the entire perimeter of the suture anchor, and the plurality of bone-engaging surface features extend along a remaining portion of the entire perimeter of the suture anchor.

2. The apparatus of claim 1 , wherein the smooth external surface is planar.

3. The apparatus of claim 1 , wherein the plurality of bone-engaging features include teeth, threads, barbs, protrusions, ridges, flanges, or ribs.

4. The apparatus of claim 1 , wherein the smooth external surface is non-planar.

5. A surgical system, comprising:
an anchor having a bore, an external planar sidewall extending longitudinally along a proximal portion of the anchor, and a plurality of bone-engaging surface features in the proximal portion of the anchor; and
a driver configured to drive the anchor into bone, the driver having a distal end configured to be received in the bore in a single predetermined orientation relative to the anchor, and the driver having a suture alignment guide formed thereon, the suture alignment guide being configured to receive and engage a suture, and the suture alignment guide being axially aligned with the external planar sidewall of the anchor when the distal end of the driver is received in the bore.

6. The system of claim 5 , wherein a distal portion of the anchor is free of the plurality of bone-engaging surface features such that the plurality of bone-engaging features are only located in the proximal portion of the anchor.

7. The system of claim 6 , wherein the external planar sidewall extends longitudinally along at least a portion of the distal portion of the anchor.

8. The system of claim 7 , wherein the proximal and distal portions of the anchor define an entire longitudinal length of the anchor.

9. The system of claim 5 , wherein the suture alignment guide includes one of a slot formed in a surface of the driver, and a hook.

10. The system of claim 5 , wherein the anchor has a cannulated interior, and the anchor is configured to have the suture extending through the cannulated interior when the suture is received and engaged by the suture alignment guide and the driver is received in the bore.

11. The system of claim 5 , further comprising a threader configured to removably couple to the driver and configured to removably couple to the suture, the threader being configured to slide along the driver coupled thereto and thereby cause the suture coupled to the threader to thread through a cannulated interior of the anchor having the driver received in the bore thereof.

12. A surgical method, comprising:
manipulating a driver to advance a suture anchor into bone, the suture anchor having a plurality of bone-engaging surface features on an external surface thereof, and the suture anchor having a suture extending through an inner lumen thereof that is freely slidable relative to the suture anchor; and
after advancing the suture anchor into the bone and with the suture freely slidable relative to the suture anchor, rotating the suture anchor within the bone relative to the bone and to the suture, thereby causing the suture to be captured between a surface of the bone and the plurality of bone engaging surfaces features such that the suture is prevented from sliding relative to the suture anchor.

13. The method of claim 12 , wherein the suture anchor is advanced into the bone with a first portion of the suture extending longitudinally along the suture anchor within the inner lumen of the suture anchor and a second portion of the suture extending longitudinally along the suture anchor outside the inner lumen of the suture anchor.

14. The method of claim 13 , wherein the second portion of the suture extends longitudinally along the suture anchor outside the inner lumen of the suture anchor along a portion of the suture anchor that is entirely free of the bone-engaging surfaces features.

15. The method of claim 14 , wherein the rotation of the suture anchor causes the second portion of the suture to extend longitudinally along the suture anchor outside the inner lumen of the suture anchor along a portion of the suture anchor that includes the bone-engaging surfaces features.

16. The method of claim 12 , further comprising, prior to rotating the suture anchor, pulling the suture so as to slide the suture relative to the bone and to the suture anchor and thereby tension a soft tissue attached to the suture.

17. The method of claim 12 , wherein rotating the suture anchor includes rotating the driver.

18. The method of claim 12 , wherein rotating the suture anchor within the bone includes rotating the suture anchor about a longitudinal axis thereof.

19. The method of claim 12 , wherein the suture anchor is advanced into the bone with the suture removably coupled to a suture retainment feature formed on the driver.

20. The method of claim 19 , wherein the suture retainment feature includes one of a slot formed in a surface of the driver, and a hook.

Assignees

• Medos Int Sarl

Inventors

• Hester Douglas
• Otrando Brian

Classifications

• A61B2017/0412

  having anchoring barbs or pins extending outwardly from suture anchor body · CPC title

• A61B2017/0427

  having anchoring barbs or pins extending outwardly from the anchor body · CPC title

• A61B2017/0438

  slotted, i.e. having a longitudinal slot for enhancing their elasticity · CPC title

• A61B2017/0409

  Instruments for applying suture anchors · CPC title

• A61B2017/0445

  cannulated, e.g. with a longitudinal through-hole for passage of an instrument · CPC title