| 摘要 |
A stent placement device capable of forward/backward operation for adjusting a placement position of a stent in a living tissue and forward/backward operation of an ultrasonic endoscope in a treatment instrument insertion channel is realized by providing a guide tube holding a stent to be placed in an opening formed in a tissue of a body cavity capable of moving forward/backward in the axial direction, a fixing portion provided at a tip end of the guide tube and including a claw portion and a reduced-diameter portion which is changeable between a locked position and a nonlocked position of the stent when the stent is held by the guide tube, and an operation portion for operating a pusher tube or the like operating movement of the stent of the fixing portion between the locked position and the nonlocked position.
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