| 摘要 |
<p>PURPOSE: To increase penetrating performance of a catheter with increased success ratio by equipping with a tip end part which has a maximum diameter larger than that of a shaft with a end part positioned right behind the shaft. CONSTITUTION: A guide catheter is equipped with a shaft 2 having a wire 2c made of stainless steel partially teflon-processed. The end of the wire 2c is gradually tapered in a conical shape partially at a section 2a. At the tip of the section 2a, as steel wire 2c is flattened by being struck for a length of about 2cm at a section 2b, a reliability for a distortion of a rotation of a catheter is greatly elevated. The head region 1 forming an olive berry shape is tightly fixed to the front end of the shaft 2 so that it could not be pulled out. The tip end part 1 is made of silver alloy so that object can be clearly seen by roentgenoscopic penetration. 'The maximum diameter A of the tip end part 1 is preferably about 1mm. The globular end 1a of the tip end part 1 which continues toward the side surface 1b, on which surface the tip end part 1 is not curved very much.</p> |
