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AssigneeJohnson & Johnson Professional, Inc.
InventorsSalvatore Caldarise, Richard P. Manginelli, David L. LaSalle, Timothy M. Flynn
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An implantable article having on at least a portion of its exterior surface an integral, as-cast macrotextured surface with macropores having undercut edge profiles. A complex macrotextured surface is provided by forming a casting mold so that the mold has complementary macrotextured surface features formed by three-dimensional printing techniques, and casting a molten metal within or in contact with the casting mold to form the implantable article. In a hybrid process, one or more printed surface mold plates are attached by hand, or in a wax molding process, to a simpler wax preform, and an investment is made in which the plates are incorporated into the investment mold. A casting is then made, with each preform yielding one cast article, and the incorporated plate forming the desired surface macrotexture on a region of the cast article. Pore size, porosity and pore shape may be varied across the surface, or varied with depth, to independently enhance different mechanical and physiological factors at the bone-prosthesis interface.
An implantable bone prosthesis, prepared by the process of:
A bone prosthesis comprising an implantable article having outer bone engaging surface, at least a portion of which bears an integral as-cast macrotextured surface, the prosthesis prepared by the process of:
An implantable bone prosthesis, prepared by the process of:
Dependencies are inferred from the claim text.