| 摘要 |
The present invention provides an air bag catheter increasing the flexibility of a far position end portion, wherein inside the air bag catheter, the rigid optimization of an area provided with the air bag is realized. The air bag catheter (10) is provided with an outer side pipe (15) and an inner side pipe (16), wherein the inner side pipe (16) is arranged to extend to the position of a far position side compared with the outer side pipe (15) and provided with an air bag (13) in a manner of covering the extended area from the outer side, and the inner side pipe (16) is provided with an inner side near position pipe (32) and an inner side middle pipe with a lower rigidity than the inner side near position pipe (32). Under such conditions, the far position end portion of the inner side near position pipe (32) is arranged at a position where the boundary of a far position side cone-shaped area (13d) and the far position side support area (13e) is near the near position side and the boundary of the straight pipe area (13c) of the air bag and the far position side cone-shaped area (13d) is near the far position side in the axial direction. |
