Balloon catheter, catheter shaft used for the catheter and method of production of balloon

摘要

A balloon catheter used in PTCA (Percutaneous Transluminal Coronary Angioplasty), and a method for manufacturing the catheter shaft and balloon thereof. The balloon catheter is equipped with a catheter shaft (1A) comprising a multi-lumen tube inclusive of a dual-lumen tube and a balloon (2) provided at the distal end of the catheter shaft (1A). The catheter shaft (1A) is equipped with at least a guide wire lumen (4A) and an inflation lumen (4b), and is composed of a resin material having a flexural modulus that contributes to pushability and trackability. A resin material layer (tube (5)) having a lubricity higher than that of the constituent material of the guide wire lumen and having a surface energy of no more than 50 dyn/cm is present on the inner surface of the guide wire lumen (4A).