| 摘要 |
<p>An endoscope apparatus 1 comprises an insertion portion 2 having an observation optical system 31 attached onto the distal end portion 11 thereof and having flexibility, a propelling tube 15 formed beyond a predetermined length on an outer-peripheral surface of the insertion portion 2 in a longitudinal-axis direction, a rotation device 3 for rotating the propelling tube 15 around the longitudinal axis, and a motor control portion 51 for controlling a rotational speed of the propelling tube 15 according to an insertion length of the propelling tube 15 inserted in a subject.</p> |
