MOLDING MOLD OF BALLOON FOR BALLOON CATHETER AND MOLDING METHOD OF BALLOON

摘要

PROBLEM TO BE SOLVED: To provide a balloon in which a balloon straight tube part and a balloon tapered part are uniformly thin even while having sufficient pressure resistance, and which has flexibility for facilitating insertion to the narrowed section of a bent blood vessel.SOLUTION: In a mold 10 for molding the balloon, the friction coefficient of a mold inner wall 30 equivalent to the straight tube part of the balloon or a part of it is made larger than the friction coefficient of a mold inner wall equivalent to the tapered part of the balloon or the tapered part and a part reaching a part of the straight tube part continued to the tapered part.