Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Heart valve – Having rigid or semirigid pivoting occluder
Patent
1995-10-24
1997-05-13
Weiss, John G.
Prosthesis (i.e., artificial body members), parts thereof, or ai
Heart valve
Having rigid or semirigid pivoting occluder
623 1, 623 3, 623 11, 623 66, A61F 224
Patent
active
056287909
ABSTRACT:
An annuloplasty ring fabricated from a component of a low elastic modulus metal coated with blue to black zirconium oxide or yellow to orange zirconium nitride. The coating provides enhanced thrombogenicity, biocompatibility, hemocompatibility, corrosion-resistance, friction and microfretting resistance, durability, and electrical insulation. The coatings can be applied to the underlying low modulus metallic components by physical or chemical vapor deposition as well as other ion-beam assisted methods. Preferably, however, for optimizing attachment strength, the annuloplasty ring components are fabricated from zirconium or zirconium-containing alloys and the coatings are formed by oxidizing or nitriding through an in situ method.
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Daigle Kenneth P.
Davidson James A.
Cuddihy Francis K.
Smith & Nephew Inc.
Weiss John G.
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