PROBLEM TO BE SOLVED: To provide an introduction device in which attachment and detachment between an output part of a drive unit and an input part of a torque wire transmitting the driving force can be performed, and the function of a function unit can be maximally obtained by transmitting the driving force to a driving object through the wire.SOLUTION: An endoscope device includes: a drive motor 23 a motor shaft 23a which transmits the driving force of the drive motor 23 a cylindrical member 111 which is connected to the motor shaft 23a an endoscope a drive shaft 30 which is provided in the endoscope a bent part which is driven with the rotational force of the drive shaft 30 a pin member 140 which is provided in the endoscope and transmits the driving force to the drive shaft 30 by being engaged with the cylindrical member 111 a driving force transmission unit 116a which is provided in the cylindrical member 111 and transmits the driving force of the cylindrical member 111 to the pin member 140 an opening which is provided in the cylindrical member 111 and to which the pin member 140 is inserted and a slope surface which is provided in the cylindrical member 111 and guides the pin member 140 to the driving force transmission unit 116a by rotating the pin member 140 around the shaft.
