Knotless Instability Anchor

Patent metadata

Field	Value
Publication number	US-2016128685-A1
Application number	US-201614996381-A
Country	US
Kind code	A1
Filing date	Jan 15, 2016
Priority date	Dec 20, 2011
Publication date	May 12, 2016
Grant date	—

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 suture anchor, comprising:
an elongate body having proximal and distal ends defining a longitudinal axis therebetween; and a plurality of bone-engaging surface features formed on at least a proximal portion of an external surface of the elongate body; wherein the elongate body has an external sidewall extending longitudinally between the proximal and distal ends of the elongate body, the sidewall being configured to allow a suture to slide therealong when the elongate body is disposed within a bone hole with a first friction force between the suture and the sidewall being less than a second friction force between the suture and an internal surface of the bone hole.

2 . The suture anchor of claim 1 , further comprising a first opening extending through the sidewall at a location proximal to a suture-seating member extending transverse to the longitudinal axis, the first opening extending into an inner lumen extending through the elongate body.

3 . The suture anchor of claim 1 , further comprising first and second openings extending through the sidewall at respective locations proximal to a suture-seating member extending transverse to the longitudinal axis, the first and second openings extending into an inner lumen extending through the elongate body.

4 . The suture anchor of claim 1 , wherein the proximal portion of the elongate body has the plurality of bone-engaging surface features formed thereon, and a distal portion the elongate body is free of bone-engaging surface features.

5 . The suture anchor of claim 1 , wherein the elongate body includes a cavity configured to receive a suture, the cavity being formed in the elongate body between a suture-receiving opening formed in a distal end of the elongate body and a suture-seating member extending transverse to the longitudinal axis and positioned proximal to the suture-receiving opening.

6 . The suture anchor of claim 5 , wherein the suture-receiving opening comprises an elongate slot formed in the distal end of the elongate body.

7 . The suture anchor of claim 1 , wherein a distal-most end of the elongate body includes opposed arms having suture-grasping members formed on opposed inner surfaces thereof.

8 . The suture anchor of claim 1 , wherein the elongate body has an inner lumen extending therethrough, a proximal portion of the inner lumen having an asymmetrical cross-sectional shape configured to receive a driver tool therein.

9 . The suture anchor of claim 1 , wherein the elongate body includes a cut-out formed in an outer surface thereof opposite to the sidewall, the cut-out extending proximally from a distal-most end of the suture anchor.

10 . The suture anchor of claim 1 , wherein the plurality of bone-engaging surface features comprise ribs spaced longitudinally along the elongate body and extending a partial circumference around the elongate body, terminal ends of each of the ribs being adjacent to the sidewall.

11 . The suture anchor of claim 1 , further comprising a suture having a first portion extending along the elongate body, a second portion extending along the sidewall, and a third portion between the first and second portions seated extending around the distal end of the elongate body.

12 . The suture anchor of claim 11 , further comprising:
a first opening extending through the sidewall, the first opening extending into an inner lumen extending through the elongate body, and the first portion of the suture extending through the inner lumen; and a second suture having first and second portions extending through the inner lumen and a third portion between the first and second portions extending through the first opening.

13 . The suture anchor of claim 1 , wherein the elongate body is non-cannulated.

14 . The suture anchor of claim 1 , wherein the sidewall is planar.

15 . The suture anchor of claim 1 , wherein the sidewall is non-planar.

16 . A suture anchor, comprising:
a cannulated elongate body having an inner lumen and having a plurality of bone-engaging surface features formed on a first portion of an external surface of the elongate body, and a sidewall extending longitudinally along a second portion of the external surface of the elongate body; wherein, when the suture anchor is disposed within a bone hole and the plurality of bone-engaging surface features are in engagement with an internal surface of the bone hole, the suture anchor has
a delivery orientation in which a suture positioned to extend through the inner lumen and along the planar sidewall is slidable along the planar sidewall with a first friction force between the suture and the sidewall that is less than a second friction force between the suture and the internal surface of the bone hole, and
a locked orientation, rotatably offset from the delivery orientation, in which the suture is positioned within the bone hole between the plurality of bone-engaging surface features and the internal surface of the bone hole.

17 . The suture anchor of claim 16 , wherein with the suture anchor in the delivery orientation, the suture positioned to extend through the inner lumen and along the sidewall is slidable within the inner lumen.

18 . The suture anchor of claim 16 , wherein the first and second portions are on opposed sides radially around the elongate body.

19 . The suture anchor of claim 16 , wherein a proximal portion of the elongate body includes the bone-engaging surface features and the planar sidewall at a same axial position longitudinally along the elongate body.

20 . The suture anchor of claim 16 , wherein the suture anchor is configured to have the delivery and locked orientations when the suture anchor is completely disposed within the bone hole such that a proximal-most end of the elongate body does not extend proximally beyond a proximal-most end of the bone hole.

Assignees

• Medos Int Sarl

Inventors

• Hester Douglas
• Otrando Brian

Classifications

• A61B17/0401 Primary

  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 title

• A61B2017/0409

  Instruments for applying suture anchors · CPC title

• A61B2017/0414

  having a suture-receiving opening, e.g. lateral opening · CPC title

• A61B2017/0412

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

• A61B2017/0438

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