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US 8,986,346 B2Granted
Wedge knotless suture anchor
AssigneeArthrex, Inc.
InventorPeter J. Dreyfuss
Life of this patent
Estimating the term…
Abstract
A wedge knotless anchor that is suture/wire activated. The anchor includes an anchor body and at least two flexible strands attached to the body. One of the flexible strands is a tying strand (attached to tissue to be fixated) and the other strand is a locking strand having a first end (a wedge end) and a second end. The wedge end has a larger cross-section than the second end. In the “locked position,” the locking strand is pulled so that the wedge end (the larger portion) is pulled into the anchor body and plugs up an opening in the anchor body, preventing movement (sliding) of the tying tissue strand which also passes through the opening.
Claims20
A knotless anchor for fixation of a length of a flexible material, comprising:
- an anchor body having a proximal end and a distal end, and a cannulation extending from an opening at the proximal end and within the anchor body;
- a first flexible strand disposed at least partially within the anchor body, the first flexible strand being configured to attach to tissue to be fixated;
- and
- a second flexible strand disposed at least partially within the anchor body and adjacent the first flexible strand, the second flexible strand having two ends, a first end with a wedge portion or wedge end, and a second end, the second flexible strand being configured to compress the first flexible strand against at least the anchor body and restrict movement of the first flexible material strand within the anchor body.
1 more element
A knotless suture anchor for fixation of a length of suture, comprising:
- an anchor body having a proximal end, a distal end, a lumen opening at the proximal end, and at least one turning post extending within the anchor body and across the lumen at the distal end;
- a length of suture passed into the lumen, from the proximal end, looped around the at least one turning post at the distal end, and passed out of the lumen through the proximal end;
- and
- a flexible material disposed at least partially within the anchor body and adjacent the length of suture, the flexible material being located between the turning post and the length of suture, the flexible material being moveable within the lumen and configured to allow axial movement of the length of suture within the lumen when the flexible material is in a first position, and to prevent axial movement of the length of suture within the body when the flexible material is in a second position, wherein the flexible material has a first longitudinal portion which has a first cross-section and a second longitudinal portion which has a second cross-section which is larger than the first cross-section.
1 more element
A method of fixating soft tissue to bone, comprising the steps of:
- providing a hole in a bone at a location at which a soft tissue graft is to be affixed;
- providing a suture anchor in the vicinity of the hole, the suture anchor comprising an anchor body having a proximal end and a distal end, and a cannulation extending from an opening at the proximal end and within the anchor body;
- a first flexible strand disposed at least partially within the cannulation of the anchor body, the first flexible strand being attached to the soft tissue graft to be fixated;
- and a second flexible strand disposed at least partially within the cannulation of the anchor body and adjacent the first flexible strand, the second flexible strand having two ends, a first end with a wedge portion or wedge end, and a second end, the second flexible strand being configured to compress the first flexible strand against at least the anchor body and restrict movement of the first flexible strand within the anchor body;
- pulling on one end of the first flexible strand through the opening at the proximal end such that the soft tissue graft is drawn toward the hole;
- and
- pulling on the second end of the second flexible strand to move the second flexible strand within the cannulation of the anchor body from a first position that does not interfere with movement of the first flexible strand within the anchor body to a second position that interferes with movement of the first flexible strand within the anchor body and locks the first flexible strand relative to the anchor body.
4 more elements
A method of locking suture within a body of a knotless suture anchor, comprising the steps of:
- providing a suture anchor comprising an anchor body having a proximal end, a distal end, a lumen opening at the proximal end, and a turning post extending within the anchor body and across the lumen at the distal end;
- providing a length of suture at least partially within the anchor body by passing the length of suture through the opening at the proximal end and into the lumen, looping the length of suture around the turning post, and then passing out the length of suture through the lumen and out of the opening at the proximal end;
- providing a length of flexible material at least partially within the anchor body and adjacent the length of suture by passing the length of flexible material through the opening at the proximal end and into the lumen, looping the length of flexible material around the turning post, and then passing out the length of flexible material through the lumen and out of the opening at the proximal end, the length of flexible material having a first portion with a first cross-section and a second portion with a second cross-section which is smaller than the first cross-section;
- and
- pulling on the length of flexible material to prevent movement of the length of suture within the lumen and to lock the length of suture within the anchor body.
2 more elements
Dependencies are inferred from the claim text.