Thermoelastic and superelastic NI-TI-W alloy

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United States of America Patent

PATENT NO 8974517
APP PUB NO 20140243947A1
SERIAL NO

14257839

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Abstract

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A radiopaque nitinol stent for implantation in a body lumen is disclosed. The stent is made from a superelastic alloy such as nickel-titanium or nitinol, and includes a ternary element including tungsten. The added tungsten in specified amounts improve the radiopacity of the nitinol stent comparable to that of a stainless steel stent of the same strut pattern coated with a thin layer of gold. Furthermore, the nitinol stent has improved radiopacity yet retains its superelastic and shape memory behavior and further maintains a thin strut/wall thickness for high flexibility.

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Patent Owner(s)

  • ABBOTT CARDIOVASCULAR SYSTEMS INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Boylan, John F Murrieta, US 46 3174
Pelton, Brian Lee Mountain View, US 8 175

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