An ultrasonic actuated unit includes an ultrasonic transmitting portion extending along a longitudinal axis and transmitting an ultrasonic vibration, an intermediary portion continuous with the ultrasonic transmitting portion or connected to the ultrasonic transmitting portion at a node position of a longitudinal vibration, and a noncontact vibrating portion extending in directions parallel to a longitudinal axis without contacting the ultrasonic transmitting portion, an imprecise vibration being transmitted to the noncontact vibrating portion from the ultrasonic transmitting portion via the intermediary portion, the noncontact vibrating portion transmitting the imprecise vibration. The ultrasonic actuated unit includes a vibration absorbing portion absorbing the imprecise vibration transmitted to the noncontact vibrating portion.
