BALLOON CATHETER

摘要

A balloon catheter includes a balloon and an inner shaft. The inner shaft includes a marker member arranged on an outer periphery of a coil body having a sparsely wound portion in which gaps are formed between adjacent windings of the wire of the coil body. A distal end part and a proximal end part of the marker member are arranged at a position facing a void formed within one of the gaps between the adjacent windings of the wire of the coil body. The inner shaft of the balloon catheter therefore will not buckle, preventing damage to the balloon by contact with the marker member when the balloon catheter is passed through the inside of a curved blood vessel.

主权项

1. A balloon catheter comprising:
a balloon; and an inner shaft joined to the balloon, the inner shaft comprising:
an inner layer;a coil body arranged on an outer periphery of the inner layer and having a sparsely wound portion in which gaps are formed between adjacent windings of a wire forming the coil body;a marker member arranged on an outer periphery of the coil body at the sparsely wound portion and having a distal end part and a proximal end part, andan outer layer covering the coil body and the marker member, wherein at least one of a distal end part and a proximal end part of the marker member is arranged at a position facing a void formed within one of the gaps between the adjacent windings of the wire of the coil body.