Ledetråd til medicinsk formål, og fremgangsmåde til fremstilling af spiral derfor

摘要

A guide wire for medical purposes having a proximal section and a distal section and formed by inserting all or a portion of a slender and flexible shaft into a coil and fixing the shaft to the coil, wherein the coil is a multiple-wire coil consisting of at least 2 wire rods, at least one of these wire rods is made of a material which is opaque against radioactive rays such as X ray, and a portion of the coil closer to the distal section of the shaft is a single-wire coil consisting of only a wire rod made of the radiopaque material.