Biased wedge suture anchor and method for soft tissue repair

摘要

A suture anchor device and method for attaching soft tissue to bone includes an anchor body and a suture locking wedge movably disposed within the anchor body. Tension applied to one side of a suture causes the suture locking wedge to translate and rotate into a position which compresses the suture, thereby locking the suture in the anchor. A resilient or spring biasing member within the anchor device urges the suture locking wedge to compress the suture, facilitating suture locking.

主权项

1. An anchor device for repairing soft tissue with a suture, the anchor device comprising:
an anchor body comprising a wall, and the wall defining a lumen through at least a portion of a length of the anchor body; a base portion disposed within the anchor body, the base portion axially slidable along a portion of the anchor body length; a wedge biasing member extending from the base portion; a suture locking wedge connected to the wedge biasing member, wherein the suture locking wedge is movably disposed at least partially within the lumen, and being in contact with the suture when the suture is extended through the anchor device and looped around the suture locking wedge such that when a tension force is applied to a tissue limb of the suture, the suture locking wedge is urged into a first position in which the suture is compressed between the suture locking wedge and a first contact location of the anchor body; and wherein the wedge biasing member is cooperatively engaged with the lumen of the anchor body and the suture locking wedge to urge the suture locking wedge to the first position; and wherein the lumen comprises an opening such that the suture follows a path defined by entering the lumen followed by at least partially protruding outside the lumen through the opening as the suture is looped around the suture locking wedge and then re-entering the lumen.