Artificial heart components with improved biocompatible coating

Details Artificial heart components with improved biocompatible coating Artificial heart components with improved biocompatible coating

A - Human Necessities

61

L

A61L 27/00 (2006.01) A61F 2/00 (2006.01) A61F 2/06 (2006.01) A61L 27/04 (2006.01) A61L 27/30 (2006.01) A61L 27/50 (2006.01) A61L 29/10 (2006.01) A61L 31/02 (2006.01) A61L 31/08 (2006.01) A61L 33/02 (2006.01) A61M 1/10 (2006.01)

Patent

CA 2141183

The invention provides hard, wear resistant, biocompatible and blood compatible coatings for components of ventricular assist (Figs. 5A-5B), external mechanical heart and blood flow assist devices and total heart implants (Figs. 1-4B) that are ex- posed to conditions of wear in the body and that may be exposed to blood components. The components are fabricated from zir- conium 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 condi- tions.

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