Passivation methods for metallic medical implants

Details Passivation methods for metallic medical implants Passivation methods for metallic medical implants

1991-06-24

1993-05-18

Isabella, David

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

Implantable prosthesis

Bone

623 18, 623 11, 427 2, A61F 228, A61F 230, A61F 202, A61K 102

Patent

active

052116638

ABSTRACT:
Passivated implants and passivation methods that provide superior corrosion resistance and surface performance characteristics as compared to conventional nitric acid passivation are disclosed. The method uses either the spontaneous or galvanic passivation of metallic prosthetic implants in aqueous alkali salt solutions containing non-aggressive oxyanions to produce a thin and uniform passive coating on the metal implant, thereby rendering the implant more stable in the biological environment.

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