| 摘要 |
An endoscope of the invention includes: an insertion portion including a bending portion bendable in an up/down (U-D) direction and a left/right (L-R) direction, and a flexible tube portion connected to a rear end of the bending portion; rigid long members inserted in the insertion portion; and a soft long member inserted in the insertion portion, in which the respective long members are dispersively disposed such that axial centers of the respective long members are respectively disposed in four inner regions sectionalized by projecting, in an longitudinal axis direction, a rotational axis at the time that the bending portion is bent in an up/down direction and a rotational axis at the time that the bending portion is bent in a left/right direction.
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