Bone prostheses with direct cast macrotextured surface regions a

Details Bone prostheses with direct cast macrotextured surface regions a Bone prostheses with direct cast macrotextured surface regions a

1994-02-18

1997-09-09

Zuttarelli, P.

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

Implantable prosthesis

Bone

623 11, 623 18, 623 22, A61F 228

Patent

active

056651180

ABSTRACT:
An implantable article having on at least a portion of its exterior surface an integral, as-cast macrotextured surface having pores with undercut edge profiles is provided. The integral, as-cast macrotextured surface is able to be formed on the implantable articles by a modified casting process. As part of a casting process, positive models of the articles to be cast, or parts thereof, are formed by stereolithographic techniques. Cavities or molds, representing negative images of the articles to be cast, are then formed by encasing one or more models in a refractory material. The positive models are then extracted by heating and thus melting the material from which they are made. Thereafter, molten casting material can be poured into the resulting mold to obtain the implantable articles.

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