METHOD FOR OPERATING POWER SUPPLY DEVICE, POWER SUPPLY DEVICE, AND HIGH-FREQUENCY TREATMENT SYSTEM

摘要

This method for operating a power supply device (200) for actuating a high-frequency treatment tool (100) that subjects living tissue to high-frequency treatment includes the following: a control circuit causes a high-frequency power supply circuit to output power (S302); a target impedance value that gradually increases from a switching impedance value to a termination impedance value is set (S403); a measured impedance value and the target impedance value are compared at regular intervals, the output is decreased by a first rate when the measured impedance value is higher (S409), and the output is increased by a second rate when the measured impedance value is lower (S410); and the output is stopped when the impedance value reaches the termination impedance value (S412).