| 摘要 |
PROBLEM TO BE SOLVED: To smoothly insert a catheter tube into the body and to guarantee accurate handling by constituting the catheter tube of the high rigidity part composed of a tube main body, a coil wound around the outer periphery and a braided body wound around the coil outer periphery and the low rigidity part composed of a tube main body continuing with the high rigidity part and a coil wound around the outer periphery. SOLUTION: In a catheter tube 1, a tube main body 2 uses a synthetic resin as a material, and a coil 3 is wound on the whole. A braided body 4 is wound around the root end side of the tube main body 2, a wire material of the coil 3 and the braided body 4 is formed of metal or a synthetic resin, and a synthetic resin covering 5 is desirably applied to the outer periphery of the braided body 4. In this tube 1, the tip side becomes the low rigidity part 1A only by winding the coil 3, and the root end side becomes the high rigidity part 1B by winding the braided body 4 from above it. However, since the coil 3 is uniformly wound over the low rigidity part 1A and the high rigidity part 1B, physical properties do not suddenly change in the boundary, preventing bending in this part. |
