| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a guide wire core material of a catheter for medical use which is highly strong at an introduction part, namely is strong in torque transmission, and especially has excellent transmission property of twist torque in a bent state, and a guide wire of the catheter for the medical use using it. <P>SOLUTION: The guide wire of the catheter for the medical use is constituted of an insertion part 2 and the introduction part 3 connected to the insertion part. Then, the core material 1 forming the introduction part 3 is formed of a straight wire made of high silica stainless steel and the wire is subjected to the heat treatment to hold it at a high temperature (450°C to 500°C) for 0.5 to 240 minutes. Thus, the guide wire core material 1 is turned to be the one of high strength equal to or higher than 2,800MPa. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
