High strength member for intracorporeal use

Details High strength member for intracorporeal use High strength member for intracorporeal use

1994-07-25

1997-06-10

Rimell, Sam

Surgery

Truss

Pad

623 1, 600 37, A61B 500

Patent

active

056366418

ABSTRACT:
This invention is directed to an intracorporeal device formed of a high strength Co--Ni--Cr alloy and is particularly suitable for forming a composite product with a pseudoelastic member formed of NiTi alloy. Suitable intracorporeal products include guidewires and stents. The high strength alloy consists essentially of about 28 to about 65% cobalt, about 2 to about 40% nickel, about 5 to about 35% chromium, up to about 12% molybdenum, up to about 20% tungsten, up to about 20% iron and the balance inconsequential amounts of impurities and other alloying constituents, with a preferred alloy composition including about 30 to about 45% cobalt, about 25 to about 37% nickel, about 15 to about 25% chromium and about 5 to about 15% molybdenum. Intravascular devices such as guidewires, stents and the like can be formed of this high strength Co--Ni--Cr alloy.

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