| 摘要 |
A driving source unit (8B) is detachably coupled to a large-diameter section (15) on a proximal end side of a scope section (8A). When the driving source unit (8B) and the large-diameter section (15) are coupled, working shafts (37-40) of the large-diameter section (15) are engaged with driving shafts (60, 61) of the driving source unit (8B), and the driving shafts (60, 61) linearly move on the basis of a driving force that is generated from driving force generating means (19) of the driving source unit (8B). One of the working shafts (37-40) is moved in accordance with the linear movement of the driving shafts (60, 61). The movement of one of the working shafts (37, 39), which is moved by the driving shaft (60, 61), is transmitted via a pinion gear (35, 36) to the other working shaft (38, 40) in a direction opposite to a direction of the movement of the one working shaft (37, 39). A bend operation wire (14) is pulled by the movement of the working shaft that moves to the driving source unit (8B) side, and a bending section (10) is bent. |
