| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a guide wire and a catheter having a relatively high rigidity while retaining characteristics of a hyperelastic material. <P>SOLUTION: The core 20 of the guide wire is dispersed with carbide at least on the surface of a cross-sectional tissue of the core base 21 in a base composed of Ti-Ni alloy, while the catheter 30 is dispersed with carbide on its surface 31 in a base composed of Ti-Ni alloy. The depth of the carbide layer on the surface layer in the cross-sectional tissue is defined as 1 μm or more. At least, a part of the core distal end 22 of the guide wire has less carbide in the cross-sectional tissue than the carbide amount on the surface layer of the base or has no carbide so that the distal end has high flexibility compared with the core base. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
