Patent ID: 8454703
Filing Date: 2013-06-04
Classification: A61B,A61F

Abstract:
1. A shoulder implant assembly for use with a pair of joint defining bones, said implant assembly comprising: a spherical shaped member configured to mount in projecting fashion from a retrofitted end of a first of the joint defining bones; a concave shaped member configured to mount in inwardly recessed fashion from a retrofitted end of a second of the joint defining bones and which seats said spherical shaped member in a joint defining relationship established between the bones; a pair of mounting tabs adapted to project from a bone contacting surface of said concave shaped member and into the retrofitted end of the second joint defining bone, support pins configured for engagement at surface locations of the second bone and anchoring to said mounting tabs; and an anchor fastener for mounting said spherical shaped member into a concave shaped seating profile formed in the retrofitted end of the first bone, said anchor fastener further comprising a spike engaging within an elongated and deformable plasticized collar mounted to the first bone at an undercut location in communication with the further concave shaped profile, said undercut location further in alignment with an aperture formed in said spherical shaped member, a pair of semi-spherical undercut engaging portions located within said deformable collar which, upon linear translation of said spike from a direction originating through said aperture in said spherical shaped member, being contacted by said spike and caused to being laterally expanded against said plasticized collar to outwardly deform said collar within the undercut location for mounting said spherical shaped member to the first bone.