Abstract: An aspect of the present invention relates to an endoscope system which can be inserted into the body of a subject to examine or treat tissue or the like and, more specifically, to an endoscope system in which an operation of bending a bending section of an insertion tube is motorized, and thus convenience in a surgeon's manipulation is ensured.

Abstract: A motor-driven endoscope includes: an insertion unit which is configured so that at least a part from one side thereof, and which includes a curve unit that is configured to be bent when being pulled by a wire inserted therein; a grip unit which is provided at one side of the insertion unit and is held by a user to input a driving input; a plurality of motors for transferring driving power so as to steer the curve unit; and a tension adjustment unit which is provided at the other side of the insertion unit and receives a rotating force from the motors to pull each wire, wherein the tension adjustment unit and the motor are configured to be coupled to or uncoupled from each other, and the tension adjustment unit is configured to receive the rotating force from the motor when coupled to the motor.