electric cautery is used extensively in surgery room due to the utility of simultaneous severance and hemostasis. In some case, the electric current from vitality electrode may unexpectedly stimulate or damage nearby muscles and nerves. Ultrasonically activated shears (UAS) is a device to transform the protein of organ for organ incision or hemostasis. General advantages possibly include shortened operating time, decrease of operative blood loss, and relatively less damages to the normal organ. UAS is commonly used in the operation room, which is now considered as a secure and useful medical device for for tissue dissection and coagulation. Also, it is expected to lower the risk of surgery by reducing operating time and blood loss.