| 摘要 |
An endoscope including an operation portion, an insertion portion provided so as to be pivotable relative to the operation portion, and a rotation knob to be operated when the insertion portion is made to pivot about an axis of the insertion portion relative to the operation portion, includes: an insertion portion neutral position indicating portion, provided on an outer circumferential face of the rotation knob, configured to indicate a neutral position in a direction in which the insertion portion pivots; and an indication ring, provided at the operation portion, configured to include an operation portion neutral position indicating portion linearly aligned with the insertion portion neutral position indicating portion in an endoscope rotation axis direction and indicating that the insertion portion is positioned at a neutral position, and two rotational angle indicating portions each provided so as to be apart from the operation portion neutral position indicating portion in a circumferential direction at the same angle, each of the two rotational angle indicating portions indicating rotation of the insertion portion around the axis by a predetermined angle. |
