| 摘要 |
PROBLEM TO BE SOLVED: To provide an endoscope in which operability of a bending operation of a bending section is secured, and operability of a state changing operation for changing an operation state of a functional section provided on a distal end portion of an insertion tube is secured.SOLUTION: An endoscope includes a knob outer peripheral part which is formed in a projected and recessed shape along a direction around a turning axis, in a bending operation knob, and which has a peak position of projections and recesses, the peak position being positioned a first knob diameter direction dimension away from the turning axis for a turning diameter direction, wherein the knob outer peripheral part has a first axial-direction dimension of 19.2 mm or less for the turning axis direction parallel to the turning axis. The endoscope includes a lever outer end face which is provided in an operation lever while the lever outer end face is away from the turning axis by a lever diameter direction dimension smaller than the first knob diameter-direction dimension for the turning diameter direction, and which is positioned away from the knob outer peripheral part by a second axial direction dimension which is 14.2 mm or less for the turning axis direction and in which a sum with the first axial direction dimension becomes 16.6 mm or more. |
