| 摘要 |
PROBLEM TO BE SOLVED: To provide a catheter tube which does not flaw the vital vascular wall, easily transmits the operating force at a proximal end to a distal end and facilitates the insertion to the vital vascular cavity and provide a balloon catheter. SOLUTION: This tube is a two-layered tube having a lumen communicating from the distal end to the proximal end and consisting of an inside layer 10 and outside layer 11. The thickness of the inside layer 10 and the thickness of the outside layer 11 (the parts excluding projecting parts) are approximately constant from the distal end to the proximal end. The inside layer 10 is formed of a rigid material and the outside layer 11 of a soft material. The inside layer 10 and the outside layer 11 and laminated in tight contact with each other and are provided with plural projections of the same material as the material of the inner layer 10 outward in a radial direction. The projections are embedded into the outside layer 11 and the bending rigidity thereof is made low at the distal end and made high at the proximal end. |
