| 摘要 |
An endoscope 2 includes a rigid distal end portion 7 provided in a distal end portion of an insertion section 4, a bending portion 8, provided on a proximal end side of the rigid distal end portion 7 of the insertion section 4, and configured to bend according to a bending operation by an operation section 5, a flexible tube portion 10 provided on a proximal end side of the bending portion 8, and an elastic cylindrical portion 9, provided between the bending portion 8 and the flexible tube portion 10, and configured not to bend according to the bending operation by the operation section 5, the elastic cylindrical portion 9 having a rigidity to bending higher than a rigidity to bending of the bending portion 8 and lower than a rigidity to bending of the flexible tube portion 10. |
