BALLOON FOR BALLOON CATHETER AND PRODUCTION METHOD THEREOF

摘要

A balloon for a balloon catheter, which is formed by blow-molding a polyethylene resin tube, obtained through the irradiation of electron beams of 5 to 40 Mrad followed by electron cross-linking, at a primary blow pressure of 15 to 25 kgf/cm<2> and at a secondary blow pressure of 5 to 8 kgf/cm<2>, the balloon having a film thickness of 10 to 40 mu m and a break strength of 800 to 2000 kgf/cm<2>. A mono-rail type balloon catheter for percutaneous intravascular coronary artery plastic operation, which has this balloon for the balloon catheter, an outer tube consisting of a comparatively flexible first outer tube member and a comparatively rigid second outer tube member, and an inner tube passing through a tube wall positioned in the lengthwise middle of the first outer tube member and formed with a proximal-end opening on the outer side thereof.