| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a urethra stent where excessive stacking of crust hardly occurs even when the stent is indwelled within the urethra for a long period and adhesion, or the like, with wall tissues within the urethra hardly occurs as well while using a Ti-Ni alloy as a shape memory alloy. <P>SOLUTION: This stent is constituted in the state of a coil which can be inserted to the urethra by a shape memory alloy wire W whose center part 50 consists of the Ti-Ni based alloy. On the surface of the wire W, an Ag based coating layer 53 containing Ag which suppresses sticking of the crust to the surface of the coil within the urethra is formed. <P>COPYRIGHT: (C)2004,JPO</p> |
