Patent attributes
A surgical instrument has a first grasping member, a second grasping member which is provided to the first grasping member to open and close to the first grasping member, and grasps a living tissue between them, an ultrasonic coagulation-cutting unit which includes an ultrasonic vibrating portion provided in one of the first and second grasping members and connected to an ultrasonic transducer to generate ultrasonic vibration, and a pressing portion provided in the other of the first and second grasping members, and facing the ultrasonic vibrating portion, the pressing portion and the ultrasonic vibrating portion pressing the living tissue between them, and a high-frequency coagulation unit which includes a first electrode provided in the first grasping member, and a second electrode provided in the second grasping member, the first electrode and the second electrodes facing each other to coagulate the living tissue.
