Ventricular assist devices of enhanced hemocompatibility

Details Ventricular assist devices of enhanced hemocompatibility Ventricular assist devices of enhanced hemocompatibility

1995-06-06

1997-10-14

Kamm, William E.

Surgery

Cardiac augmentation

A61M 112

Patent

active

056766327

ABSTRACT:
Ventricular assist devices fabricated from low-modulus Ti--Nb--Zr alloys to provide enhanced biocompatibility and hemocompatibility. The ventricular assist devices may be surface hardened by oxygen or nitrogen diffusion or by coating with a tightly adherent, hard, wear-resistant, hemocompatible ceramic coating. It is contemplated that the Ti--Nb--Zr alloy can be substituted as a fabrication material for any portion of a ventricular assist device that either comes into contact with blood thereby demanding high levels of hemocompatibility, or that is subject to microfretting, corrosion, or other wear and so that a low modulus metal with a corrosion-resistant, hardened surface would be desirable.

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