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Cardiovascular implants of enhanced biocompatibility

  • US 5,782,910 A
  • Filed: 06/06/1996
  • Issued: 07/21/1998
  • Est. Priority Date: 12/21/1989
  • Status: Expired due to Fees
First Claim
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1. An external mechanical heart having component parts including a blood pump, tubes and an electric motor, said pump including moving parts such as input and output valves and cam assemblies, said component parts having enhanced hemocompatibility, comprising:

  • components of the external mechanical heart, said component parts including a blood pump, tubes, and an electric motor, with said blood pump including moving parts comprising input and output valves and cam assemblies,wherein said component parts are at least partially fabricated from a metal alloy comprising;

    (i) titanium; and

    (ii) from about 10 to about 20 wt. % niobium or from about 35 to about 50 wt. % niobium;

    wherein the alloy enhances the hemocompatibility of said component parts and is free of toxic elements, except such amounts of said toxic elements as may occur as impurities in the alloy and as contaminants as a result of an alloying process.

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