Suture anchor with insert-molded rigid member

摘要

A threaded suture anchor with an eyelet shield transversely molded at a distal end of the anchor body, over which one or more strands of suture is looped. The anchor body is threaded and has a tapered distal portion. The proximal end portion of the suture anchor body has a polygonally shaped opening to accept a polygonal drive head, preferably hexagonal or square. The peripheral surface defining polygonally shaped opening is rounded and smooth to prevent abrading sutures placed in contact therewith. In another embodiment, a push-in anchor is provided with an eyelet shield at the proximal end of the anchor.

主权项

1. A suture anchor assembly comprising:
an anchor body including a longitudinal axis, an exterior surface, a proximal end, and a distal end, the anchor body including a first opening at the proximal end of the anchor body, the anchor body including an internal passage extending along the longitudinal axis from the first opening through at least a portion of a length of the anchor body, the anchor body including an external helical thread on the exterior surface, the external helical thread extending along the anchor body, wherein the external helical thread extends from the proximal end of the anchor body to a location distal of a rigid support, the external thread extends continuously over 360 degrees around the longitudinal axis for at least a portion of the length of the anchor body, the anchor body including a second opening distal of the first opening, the anchor body including a third opening through the exterior surface of the anchor body and distal of the rigid support of the anchor body, wherein the third opening is distal of the second opening, wherein the rigid support has a leading distal surface, the rigid support extends across the longitudinal axis of the anchor body, the rigid support is integral with and attached to the anchor body to define a unitary single-piece component, the rigid support and the anchor body are made of the same material, the rigid support is disposed in a distal half of the anchor body, and the distal half of the anchor body includes the distal end of the anchor body, a wall is defined by the external helical thread on the exterior surface of the anchor body and a surface of the internal passage, and the rigid support is attached to the surface of the internal passage at two locations at an axially fixed longitudinal position; and a suture strand extending out of the first opening of the anchor body, the suture strand having a first tail with a first end and a second tail with a second end, wherein the first tail and the second tail are unattached to each other prior to tissue fixation, wherein a portion of the suture strand is disposed in the internal passage between the rigid support and the first opening, the suture strand is supported by the leading distal surface of the rigid support, and the suture strand is disposed in the first opening, the second opening and the third opening of the anchor body.