Prosthesis with biologically inert wear resistant surface

Details Prosthesis with biologically inert wear resistant surface Prosthesis with biologically inert wear resistant surface

1995-07-05

1997-12-30

Isabella, David

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

Implantable prosthesis

Bone

623 18, 623 23, 606 65, 606 69, 606 76, A61F 228

Patent

active

057024480

ABSTRACT:
A prosthesis is provided having at least a smooth non-articulating load bearing surface disposed adjacent a bone. The prosthesis includes a substrate formed from a metallic alloy. At least the regions of the substrate defining the load bearing surface are coated with a biologically inert abrasion resistant material harder than the substrate for preventing leaching of ions from the substrate into adjacent body tissue and for preventing wear. The coating may be titanium nitride or zirconium or other such material exhibiting biological inertness and acceptable hardness. The coating preferably defines a thickness of 8-10 microns.

REFERENCES:
patent: Re32449 (1987-06-01), Claussen et al.
patent: 3643658 (1972-02-01), Steinemenan
patent: 3707006 (1972-12-01), Bokros et al.
patent: 4040129 (1977-08-01), Steinemann et al.
patent: 4145764 (1979-03-01), Suzuki et al.
patent: 4159358 (1979-06-01), Hench et al.
patent: 4223412 (1980-09-01), Aoyagi et al.
patent: 4483678 (1984-11-01), Nishio et al.
patent: 4687487 (1987-08-01), Hintermann
patent: 5037438 (1991-08-01), Davidson
patent: 5123924 (1992-06-01), Sioshansi et al.

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