ANCHOR FOR SECURING A SUTURE
An anchor for securing a suture relative to bone. The anchor includes a generally cylindrical body portion formed of a first material, a suture passage proximate the trailing end of the generally cylindrical body portion formed of a different second material, and at least one bone engaging projection to engage the anchor to the bone.
1 . An anchor for securing a suture relative to bone, the anchor comprising:
a first material forming a generally cylindrical body portion, a leading end, and a trailing end, the body portion being configured for insertion into an aperture in the bone;
a second material forming a suture passage proximate to the trailing end of the generally cylindrical body portion, the second material being different than the first material, the suture passage being configured to receive a portion of the suture therein; and
at least one bone engaging projection to engage the anchor with the bone.
2 . The anchor of claim 1 , wherein at least one of the first material and the second material is a polymeric material.
3 . The anchor of claim 2 , wherein the polymeric material is a copolymer.
4 . The anchor of claim 2 , wherein the polymeric material is a dipolymer.
5 . The anchor of claim 2 , wherein the polymeric material is one selected from the group consisting of cellulose, petroylglutamic acid, high purity carboxymethylcellulose, a collagen, and polylactide.
6 . The anchor of claim 1 , wherein the first material is a ceramic.
7 . The anchor of claim 6 , wherein the ceramic is selected from the group consisting of hydroxyapatite composites with polyethylene, polylactide and polyhydroxybutyrate.
8 . The anchor of claim 1 , wherein the trailing end includes a generally flat surface transverse to a central longitudinal axis of the generally cylindrical body portion.
9 . The anchor of claim 1 , wherein the leading end of the generally cylindrical body portion of the first material has an axially tapering configuration.
10 . The anchor of claim 1 , wherein the anchor is further configured to be insertable in soft tissue.
11 . The anchor of claim 1 , wherein the at least one bone engaging projection comprises a rib projecting radially from the cylindrical body portion.
12 . The anchor of claim 1 , wherein at least one of the first material and the second material is configured to change size after insertion into the bone.
13 . The anchor of claim 1 , wherein the trailing end is configured to be engaged by a driver.
14 . The anchor of claim 1 , wherein the second material extends away from the trailing end and the anchor.