| 摘要 |
PROBLEM TO BE SOLVED: To provide a catheter guide wire having a wire end part capable of properly transmitting torque, largely bending along any direction upon exposure to a small force, and giving extremely large bending resistant strength when bent to a maximum limit by capping the prescribed length of a coil spring at least to the end of a forward end core. SOLUTION: A guide wire for a catheter is made of a linear body 1 of high tension metal, and a braided assembly as cylindrically braided by use of extra fine X-ray impermeable metallic wires, and capped and fixed to the forward end of the linear body 1 via one end thereof. At the same time, the linear body 1 has a coaxial multilayer structure, with a base end core 111 and a forward end core 112 connected to a single line via a joint body 113 so as to envelope the whole of the base end core 111 and a part of the forward end core 112. Also, a coil spring 2a is adopted instead of the braided assembly, and the forward end 112a of the end core 112 is extended to the vicinity of the forward end 21 of the coil spring 2a capped to the forward end core 112. Then, the forward end core 112 is secured to the boil spring 2a by infiltrating a brazing material from the outside. |
