| 摘要 |
An endoscopic treatment instrument is provided which includes: a flexible sheath; a wire disposed inside the sheath so as to advance and retreat; a restriction member which restricts a movement of the wire in the sheath to a proximal side; an operating portion connected to a proximal end of the sheath; a wire operating portion which is connected to a proximal end of the wire and disposed to advance and retreat relative to the operating portion; a resilient member which has a first end and a second end and of which the first end is connected to the wire operating portion to expand and contract between the second end; a movable member which is connected to the second end so as to be movable relative to the operating portion; and a control member which is disposed in the movable member and which switches the movable member between a movable state and a fixed state relative to the operating portion. |
