Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Implantable prosthesis – Bone
Patent
1989-12-08
1991-03-05
Isabella, David J.
Prosthesis (i.e., artificial body members), parts thereof, or ai
Implantable prosthesis
Bone
623 18, A61F 0000
Patent
active
049974459
ABSTRACT:
This invention comprises a prosthetic implant having a metal base with a layer of metallic wire screen bonded to the upper surface of the base, and further having a polyethylene portion molded about the upper surface of the base. The polyethylene portion penetrates the porous openings in the screen to enhance the securement of the polyethylene portion to the base. The screen is fully encapsulated between the metal base and the polyethylene portion. The base further includes a plurality of notches spaced around the peripheral edge. The screen layer overhangs over at least a portion of the notches. In addition, the lower surface of the base includes a porous metallic layer providing an exposed porous surface. The construction of the screen layer on the upper surface of the base is different from the construction of the porous layer on the lower surface.
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Geringer Margaret L.
Isabella David J.
Zimmer Inc.
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