Prosthetic acetabular cup and method of manufacture

Abstract

A prosthetic bearing element and a method for forming the same includes an injection molded bearing made of PEEK resin with short carbon fiber reinforcement. The inner surface of the PEEK bearing is adapted to receive a ceramic or metal articulation component. The outer surface of the bearing layer includes sputtered titanium particles forming a porous backing layer. Hydroxyapatite is then sputtered or otherwise deposited onto the titanium backing layer to form an outer surface of the prosthetic bearing element. A barrier layer can be formed either of PEEK or titanium which layer is between the outer surface of the molded bearing and the inner surface of the porous structure. The barrier layer prevents tissue ingrowth into the bearing component. Hydroxyapatite is then sputtered onto the outer porous layer or applied by solution deposition. This outer surface of the prosthetic bearing element can then be coated with bone morphogenic protein.

Dependencies are inferred from the claim text.