| 摘要 |
An endoscope includes an active bending portion 11 provided in an insertion portion and bendable according to a bending operation, the active bending portion 11 including bending pieces 11a adjacent to each other and pivotably connected together via a plurality of rotation shafts 35a and 35b, the rotation shafts 35a and 35b being located at positions differing by 90° in a circumferential direction J of the bending pieces 11a, and a passive bending portion 13 provided closer to the proximal end side than the active bending portion 11 and passively bendable when an external force is applied thereto, the passive bending portion 13 including bending pieces 13a adjacent to each other and pivotably connected together via a plurality of rotation shafts 45a to 45c, the rotation shafts 45a to 45c being located at positions differing by 60° in the circumferential direction J. |
