Patent ID: 8257394

Claim:
An anchor system for surgical implantation in tissue comprising: an expandable anchor body adapted for placement against a tissue surface, the anchor body retained on a single suture extending through the anchor body; a locking mechanism moveable into contact with the anchor body to hold the anchor body into contact with the tissue surface; the anchor body expandable via the locking mechanism pushing on the anchor body, with the locking mechanism defining a lumen for passage of the single suture through the lumen, wherein the locking mechanism has an interference element movably disposed within the lumen that is configured to contact the single suture, such that the single suture is uni-directionally advanceable through the lumen relative to the anchor body, and wherein the locking mechanism comprises a tubular member having a distal opening, a proximal opening, and a plug or cap attached to the tubular member that substantially covers the proximal opening; and a delivery device having an interior space with the anchor body and the locking mechanism in the interior space.