Patent ID: 8777990

Claim:
A knotless suture anchor for implanting in a bone hole, comprising: an outer tubular member having a distal end, a proximal end, and an outer wall having an outer dimension configured to fit and be retained within the bone hole and a retaining portion that is deformable and configured to outwardly expand into contact with a wall of the bone hole to retain the anchor within the bone hole; the outer tubular member having an inner wall including at least one ratcheting aperture therethrough; an inner member being rotatably disposed within the outer tubular member, the inner member having a wall with an outer diameter, a proximal end having a pin extending across the outer diameter and a distal end, the distal end having a pointed tip extending beyond the distal end of the outer tubular member, and at least one pawl formed from, and angled outwardly from, the wall of the inner member and engageable with the at least one ratcheting aperture, said pawl comprising a ramp portion configured to disengage the pawl from the ratcheting aperture during relative axial movement of the inner and outer members; and the inner member and the outer tubular member each having a suture aperture for receiving a suture thread; wherein the outer diameter of the inner member is selected to be large enough such that as the inner member having a suture thread received by its suture aperture is rotated, while the suture anchor is implanted in the bone hole, the suture thread is drawn through the suture aperture of the outer tubular member and wraps onto the inner member thereby increasing the effective diameter of the inner member with the wrapped suture thread coming into contact with the inner wall of the outer tubular member, such contact adapted to exert an outward force on the retaining portion of the outer tubular member to outwardly deform the retaining portion into contact with the wall of the bone hole.