| 摘要 |
A bend section is disposed on an insertion section. A rotary body, on which a proximal end portion of a wire for a bend operation, which has a distal end portion connected to the bend section, is rotatably supported in a large-diameter section. Driving force transmission portion, which converts linear movement of a working shaft that is operable in a linear direction to rotational movement of the rotary body, is provided in the large-diameter section. A driving source unit is detachably coupled to the large-diameter section on the proximal end side of the insertion section. The driving source unit is provided with operation section which linearly moves the working shaft, in accordance with an operation of a driving shaft that operates in a linear direction by a driving force from a driving motor.
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