PROBLEM TO BE SOLVED: To provide a surgical treatment device excellent in operability capable of providing appropriate coagulation treatment or incision treatment of a biological tissue quickly and easily by facilitating an approach to a treatment part or an affected part so as to easily grip a biological tissue.SOLUTION: A surgical treatment device 1 includes a piezoelectric element unit 30 provided to an openable/closable gripping part 2 (22) for treating a biological tissue provided at the leading end of insertion parts 2, 3 and 4, and can perform coagulation/incision treatment of the biological tissue by the ultrasonic vibration generated when an electric signal is supplied to the piezoelectric element unit 30 and the heat generation of the piezoelectric element unit 30 that occurs simultaneously with the ultrasonic vibration.COPYRIGHT: (C)2015,JPO&INPIT【課題】 処置部位または患部へのアプローチを容易にして生体組織を把持し易くして、適切な生体組織の凝固処置または切開処置を迅速かつ簡便に施すことができる操作性の良い外科用治療装置の提供。【解決手段】 外科用治療装置1は、挿入部2,3,4の先端に設けられた生体組織を処置する開閉可能な把持部2(22)に設けられた圧電素子ユニット30を有し、圧電素子ユニット30に電気信号が供給されて発生する超音波振動および超音波振動と同時に発生する圧電素子ユニット30の発熱により生体組織の凝固/切開処置を行える。【選択図】図2
