Patent ID: 7909824

Claim:
An energy accessory comprising: an ultrasonic vibrator configured to generate ultrasonic vibration; an elongated probe including a proximal end connected to the ultrasonic vibrator and configured to transmit the ultrasonic vibration generated by the ultrasonic vibrator from a proximal end side to a distal end side; a sheath provided on the proximal end side of the probe; a jaw provided on a distal end portion of the sheath and configured to be opened and closed with respect to the probe; a first electrode provided on the jaw; a shaft provided within the sheath movable in a longitudinal axial direction of the probe with respect to the probe, including a distal end portion connected to the jaw, wherein the shaft is configured to be moved in the longitudinal axial direction to open and close the jaw with respect to the probe; an outer tube provided on the sheath movable in the longitudinal axial direction of the probe with respect to the probe and including a distal end portion; and a second electrode provided on the distal end portion of the outer tube, configured to be moved between a distal grasping position wherein the second electrode faces the jaw and a proximal non-grasping position wherein the second electrode is arranged closer to the proximal end side than the jaw, by moving the outer tube in the longitudinal axial direction of the probe with respect to the probe, and configured so that a high frequency current is to flow between the first electrode and the second electrode, and wherein the energy accessory is configured to grasp a living tissue by the jaw and the probe to perform a treatment to the living tissue grasped by the jaw and the probe by use of ultrasonic vibration of the probe when the second electrode is positioned in the non-grasping position and configured to grasp a living tissue by the jaw and the second electrode to perform a treatment to the living tissue grasped by the jaw and the second electrode by use of a high frequency current flowing between the first electrode and the second electrode through the living tissue grasped by the jaw and the second electrode when the second electrode is positioned in the grasping position jaw.