| 摘要 |
<p>A method of improving the properties of a component of a medical device entails constraining the component, which comprises about 45-55 at.% Ni, about 45-55 at.% Ti, and about 0.3 at.% Cr, into a predetermined configuration. The component also includes at least about 35% cold work. The component is heated during the constraining at a temperature of between about 425°C and about 500°C for a time duration of between about 5 minutes and about 30 minutes, thereby improving the superelastic and mechanical properties of the component. A medical device includes a superelastic component for use in a body vessel that comprises about 45-55 at.% Ni, about 45-55 at.% Ti, and about 0.3 at.% Cr, where the component has an upper plateau strength of at least about 75 ksi, a residual elongation of about 0.1 % or less, and an austenite finish temperature (Af) of about 30°C or less.</p> |
