INSERTION DEVICE COMPRISING OPERATION INPUT PORTION

摘要

An insertion device includes a UD knob having an outer peripheral side notched in a concave recess with such a curvature and a size as to come in close contact with a base part of a thumb, and an RL knob placed on the UD knob with the same center of rotation, and is configured such that the thumb extends beyond the UD knob, the base part of the thumb is put in contact with a deepest part of the recess of the UD knob, and the RL knob is operably present within a movable range of the thumb beyond the UD knob. The RL knob is configured to be driven by a motor, and thereby the RL knob is rotated by a fingertip to bend a bend portion.

主权项

1. An insertion device comprising:
an insertion portion provided with a bend portion which bends in a first axial direction and a second axial direction perpendicular to the first axial direction; a first rotary body with a first rotational shaft, the first rotary body configured to rotate about the first rotational shaft upon operation input for bending the bend portion in the first axial direction; a first wire fixed to the bend portion and configured to be pulled and bend the bend portion in the first axial direction; a first pulling mechanism coupled to the first rotational shaft and configured to pull the first wire in interlock with rotation of the first rotary body; a second rotary body with a second rotational shaft provided coaxially with the first rotational shaft, the second rotary body configured to rotate about the first rotational shaft upon operation input for bending the bend portion in the second axial direction; a second wire fixed to the bend portion and configured to be pulled and bend the bend portion in the second axial direction; a driving source configured to generate a driving force for bending the bend portion in the second axial direction; a rotation amount detector configured to detect a rotation amount of the second rotary body; a second pulling mechanism comprising a rotary portion attached the second wire to pull the second wire by rotating independently with respect to the second rotational shaft, the second pulling mechanism configured to pull the second wire in interlock with generation of the driving force by the driving source; and a controller configured to output to the driving source a driving signal for bending the bend portion in the second axial direction, based on the rotation amount detected by the rotation amount detector.