Knotless twist suture anchor

A method for securing a suture of a suture anchor comprising:

• driving a first body portion of the suture anchor into a bony tissue, the first body portion having a bone-engaging feature to fixedly engage the bony tissue;
• and
• rotating a second body portion of the suture anchor, the second body portion rotatable relative to the first body portion, where rotating the second body portion applies a rotational torque to a flexible member loop coupled to the second body portion causing the flexible member loop to rotate with respect to the first body portion;
• forming a twist in the flexible member loop about a suture extending through the flexible member loop, in response to the rotational torque, that causes the flexible loop member to fold upon and frictionally engage the suture passing through the flexible member loop to frictionally secure the suture and draw the flexible member loop toward the second body portion, wherein the second body portion includes a recessed fixation point including a cavity on a bottom surface of a tool engaging region of the second body portion where the flexible member is coupled to the second body portion by extending through holes located on the bottom of the tool engaging region which extend into the cavity of the recessed fixation point such that the flexible member is exposed within the tool engaging region of the second body member while being recessed below the tool-engaging region.

A suture anchor comprising:

• a suture;
• a first body portion extending along a longitudinal axis from a proximal end to a distal end, the first body portion defining a longitudinally extending bore extending from a recess in the proximal end to the distal end and a transverse bore open to the longitudinally extending bore, and at least one suture channel in communication with the transverse bore and extending along an outer surface of the first body portion perpendicularly to the transverse bore, the first body portion having a bone-engaging feature to fixedly engage a bony tissue;
• and
• a second body portion rotatably received in the first body portion and rotatable relative to the first body portion and coupled to a flexible member loop disposed in the longitudinally extending bore, the flexible member configured to receive the suture, wherein the second body portion includes a recessed fixation point including a cavity on a bottom surface of a tool engaging region of the second body portion, the recessed fixation point including a first bore extending from a top surface to a bottom surface of the second body portion and a second bore extending from the top surface to the bottom surface of the second body portion, the first and second bores being open to the cavity of the recessed fixation point, where the flexible member is coupled to the second body portion such that the flexible member goes through the first bore and the second bore and is exposed within the tool engaging region at the top surface of the second body member while being located below the tool-engaging region of the second body portion;
• wherein rotation of the second body portion relative to the first body portion rotates the flexible member loop and causes the flexible member loop to fold upon and to frictionally engage the suture passing through the flexible member loop to form a twist that frictionally secures the suture.