Surgical operation system

A surgical operation system, comprising:

• a power supply apparatus including a first signal producing section that produces a high frequency signal that forms high frequency energy as a first signal, and a second signal producing section that produces a second signal for producing other energy different from the high frequency energy;
• a surgical treatment instrument that has a converter that produces the other energy by supply of the second signal, and grasping members that openably and closably grasp a living tissue of an object to be treated, and performs treatment by the high frequency energy for the living tissue via a pair of electrodes that are formed by the grasping members, and treatment by the other energy via the grasping members;
• a cable that has one end connected to the surgical treatment instrument and the other end provided with a connector that is detachably connected to the power supply apparatus, and supplies the high frequency signal and the second signal to the surgical treatment instrument from the power supply apparatus via the connector;
• a high frequency voltage measuring section that is provided in the power supply apparatus, and measures a high frequency voltage of the high frequency signal that is outputted from the power supply apparatus via a first high frequency signal line that is inserted through an inside of the cable to a side of a second high frequency signal line that is connected to the first high frequency signal line, is inserted through an inside of the surgical treatment instrument, and electrically continues to the pair of electrodes;
• a high frequency current measuring section that is provided in the power supply apparatus, and measures a high frequency current of the high frequency signal that is outputted from the power supply apparatus via the first high frequency signal line that is inserted through the inside of the cable to the side of the second high frequency signal line that is inserted through the inside of the surgical treatment instrument;
• a calculation section that is provided in the power supply apparatus, and calculates an electrostatic capacity value that the first high frequency signal line inside the cable that transmits the high frequency signal and the second high frequency signal line that is inserted through the inside of the surgical treatment instrument have, on a basis of the high frequency voltage measured by the high frequency voltage measuring section and the high frequency current measured by the high frequency current measuring section, in a middle of treating the living tissue by the high frequency energy and the other energy;
• a determination section that is provided in the power supply apparatus, and determines whether or not the electrostatic capacity value calculated by the calculation section is smaller than a threshold value set in advance to detect occurrence of wire breakage in the first high frequency signal line inside the cable and the second high frequency signal line inside the surgical treatment instrument;
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• a control section that is provided in the power supply apparatus, and performs control of stopping output of the high frequency signal and the second signal that are supplied to the surgical treatment instrument via the cable from the power supply apparatus, when the determination section determines that the electrostatic capacity value is smaller than the threshold value.