原始名称记载: OLYMPUS MEDICAL SYSTEMS CORP.

A control device for use with an endoscope is configured to: set a first pipe line to a closed state, a second pipe line to an open state, and a third pipe line to a closed state, to cause liquid to be ejected from an air and water supply portion; set the first pipe line to an open state, the second pipe line to a closed state, and the third pipe line to the closed state, to cause gas to be ejected from the air and water supply portion; and set the first pipe line to the closed state, the second pipe line to the open state, and the third pipe line to an open state, to reduce a pressure in a water supply tank.

An endoscopic treatment instrument includes a sheath including a first tube and a distal end member, the distal end member fixed to a distal end of the first tube, the distal end member including a suction hole, an electrode protruding from a distal end of the sheath, a second tube fixed to the distal end member, a conduit located between an inner surface of the second tube and an outer surface of the first tube, the conduit communicating with the suction hole. A proximal end of the conduit is located between a distal end and a proximal end of the first tube.

An ultrasonic treatment tool includes: a vibration transmission portion having a distal end provided with a treatment portion configured to treat a treatment target, the vibration transmission portion being configured to transmit ultrasonic vibration from a proximal end toward the treatment portion of the vibration transmission portion; a holding portion configured to be opened from and closed to the treatment portion; and a resin pad that is held to the holding portion and has a gripping face to grip the treatment target between the resin pad and the treatment portion.