| 摘要 |
The balloon catheter comprises a main body having an annular groove formed on the peripheral surface at the tip of a flexible tube member which has at least one internal passage. A balloon disposed in such a manner that its outer diameter, when it is not inflated, is equal to, or smaller than, the maximum outer diameter of the tip of the tube member. The balloon is inflated or deflated through a balloon inflation/deflation internal passage openings to the bottom of the annular groove. The method of producing the balloon comprises reducing the diameter of the tip of a flexible tube member to such an extent that a necessary internal passage does not disappear. A tubular heat-resistant member is fitted over the part of the tip having the reduced diameter, at which the balloon is to be fitted. It is molded in a spherical shape so that part of the tip extends beyond the tubular heat-resistant member, removing the tubular heat-resistant member and fitting the balloon. |
