| 摘要 |
PROBLEM TO BE SOLVED: To provide a balloon catheter which can prevent damages in the vascular wall of a blood vessel, etc. during delivery while maintaining a delivery performance toward an affected part and surely pass through the affected part.SOLUTION: The balloon catheter (C1) includes an inner tube (2) with a lumen (11) for guide wire inside and an outer tube (3) with the inner tube (2) inside. At the distal end of the inner tube (2), a tubular chip (4) with flexibility higher compared to that of the proximal end side is equipped. At the distal end of this chip (4), a shape-retaining member (5) which retains the opening shape of the main lumen (11) located at the distal end of the chip (4) against the external force in the radial direction is provided without worsening bendability of the chip (4) in the direction of the major axis. |
