Patent attributes
A balloon catheter having multiple tubular members, an adaptor member connected thereto and a balloon for dilation of constricted blood vessel, wherein the peeling strength of the balloon surfaces when adheres to each other is 0.06 N or more and the modulus of the balloon in the axial direction is 100 N/mm2 or more, and wherein the coated resin composition contains a hydrophilic resin that is lubricating when wet. Furthermore, the outer surface of the balloon is made of a polyamide elastomer resin composition having a durometer hardness of 55 D or less. Thus, there can be provided a balloon catheter excelling in handling property, for which keeping the balloon highly penetrable through the stricture site as the accordion phenomenon of the balloon is prevented, and simultaneously preserving the other properties of the balloon (flexibility of balloon, wrapping dimension, and dilation/shrinkage response etc.).
