Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Corporeal artificial heart – heart assist – control...
Patent
1992-07-27
1994-02-01
Isabella, David
Prosthesis (i.e., artificial body members), parts thereof, or ai
Corporeal artificial heart, heart assist , control...
623 11, 427 2, A61F 202, A61M 110, A01N 102, A61J 105
Patent
active
052828506
ABSTRACT:
The invention provides hard, wear resistant, biocompatible and blood compatible coatings for components of ventricular assist, external mechanical heart and blood flow assist devices and total heart implants that are exposed to conditions of wear in the body and that may be exposed to blood components. The components are fabricated from zirconium or the alloys of zirconium and the coatings comprise either blue-black or black zirconium oxide or zirconium nitride that are tightly adhered to the underlying metal substrate. In the event that the component is used under conditions which subject it to wear, then the coating should have a thickness that provides sufficient residual compressive stresses to withstand these conditions.
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Isabella David
Nguyen Dinh X.
Smith & Nephew Richards Inc.
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