| 摘要 |
<p>A medical device comprising a shape memory alloy (SMA) portion is provided. The SMA portion is deformable from an undeformed first configuration assumed by it in the austenitic state to a deformed second configuration, such that the deformation converts it into a strain-induced martensitic or partial martensitic state with an increase in As from its original temperature As°, to a temperature As' when the SMA portion, once in said second configuration, is heated to a temperature higher than As', it transforms to an at least partial austenitic state, which transformation results in a change in configuration from the deformed second configuration towards the undeformed first configuration and in a decrease of As from As' to As°, such that the SMA portion is stable in the at least partial austenitic state at the body temperature.</p> |
