| 摘要 |
Grasping forceps (1) has a pair of guide sections (7A, 7B) for guiding operation wires (6A, 6B) in the direction of an axis (C) of a sheath, an advance/retreat member (transmission section)(8) for transmitting information on displacement of an operation section to the operation wires (6A, 6B) and outputting it to a treatment section, a movement-in-the-distal-direction preventing section (section for preventing movement in a specific direction)(10) for allowing the operation wires (6A, 6B) to move only in the direction to the proximal end of the sheath, a movement-in-the-proximal-direction preventing section (section for preventing movement in a specific direction)(11) for allowing the operation wires (6A, 6B) to move only in the direction to the distal end of the sheath, and an engaged state releasing section (12) for releasing engagement between the guide sections (7A, 7B) and the movement-in-the-distal-direction preventing section (10) or the movement-in-the-proximal-direction preventing section (11). When the treatment section is held in a certain state in the middle of treatment, the state of the treatment section can be maintained even if external force is applied to the treatment section, so that operation for reactivating the treatment section and operation for releasing the treatment section from a state in which it is held can be performed at the same time. |
