Patent ID: 9622648
Date: 2017-04-18
CPC Classifications: A61B,G02B

Claim:
1. An insertion device comprising: an inserting section which extends along a longitudinal axis; a movement section which is provided in the inserting section or an attachment unit which is attached to the inserting section, and which is configured to move to cause a propulsive force to act on the inserting section; a holdable grip which is provided to a proximal direction side with respect to the inserting section; a driving source which is configured to be driven so as to generate a movement driving force to move the movement section; a coupling member including a driving source-side abutting surface which abuts to an outer peripheral surface of the driving source; and a base member which abuts to the coupling member and the grip, the driving source being configured to vibrate due to a load acted against the movement section in a moving state in which the movement section moves by the transmitted movement driving force so that a vibration generated in the driving source is transmitted to the base member through the coupling member and then the vibration transmitted to the base member is transmitted to the grip, the base member including a vibration transmitting surface which abuts to an inner peripheral surface of the grip, the vibration transmitting surface being provided in a shape of an arc around the longitudinal axis in a cross section perpendicular to the longitudinal axis.