The electric operation device in this inventing possesses, putting the aforementioned organism organization on the basis of with the high-frequency power occurrence section and detect the voltage of high-frequency power the voltage sensing station and detect the electric current of high-frequency power the electric current sensing station and the aforementioned voltage and the aforementioned electric current which generate the high-frequency power in order to impress in organism organization, when the impedance calculation section and the aforementioned impedance which calculate the impedance between the grip component which it grips exceed specified threshold, the control section which controls in order to rise the frequency of the aforementioned high-frequency power gradually vis-a-vis the aforementioned high-frequency power occurrence section, and,本発明における電気手術装置は、生体組織に印加するための高周波電力を発生する高周波電力発生部と、高周波電力の電圧を検出する電圧検出部と、高周波電力の電流を検出する電流検出部と、前記電圧と、前記電流とに基づき、前記生体組織を挟んで把持する把持部材間のインピーダンスを算出するインピーダンス算出部と、前記インピーダンスが所定の閾値を超えた場合に、前記高周波電力の周波数を段階的に上昇させるための制御を前記高周波電力発生部に対して行う制御部と、を具備する。
