Polymer composite implant and method of making the same

Details Polymer composite implant and method of making the same Polymer composite implant and method of making the same

1995-11-14

1997-07-08

Weiss, John G.

Prosthesis (i.e., artificial body members), parts thereof, or ai

Implantable prosthesis

Bone

623 22, 433180, 433226, A61F 228

Patent

active

056455941

ABSTRACT:
This invention provides for an acetabular cup and the manufacturing of an acetabular cup implant formed from a composite of polymer materials such that the articulating surface of the implant is 100% ultra high molecular weight poly ethylene (UHMWPE) and the bone engaging surface of the cup contains a significant amount of poly methyl methacrylate (PMMA). The cup would consist of at least two zones. Zone 1 forming the articulating surface and zone two extending from the zone 1 to the bone engaging surface. Preferably, the zone 1 would consist of UHMWPE and would extend a predetermined thickness from the articulating surface. Zone 2 would preferably consist of a mixture of UHMWPE and PMMA dry blended before molding. A third zone may abut zone 2 and consist of PMMA.

REFERENCES:
patent: 4266303 (1981-05-01), Park
patent: 4336618 (1982-06-01), Raab
patent: 4432730 (1984-02-01), Gettleman et al.
patent: 4566138 (1986-01-01), Lewis et al.
patent: 4735625 (1988-04-01), Davidson
patent: 5260093 (1993-11-01), Kamel et al.
patent: 5314494 (1994-05-01), Huiskes et al.

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