The control mannered null radio-frequency generator of the radio-frequency generator and the approved electricity which for high frequency surgical operation can adjust the approved

摘要

Is a way to limit the high-frequency generator, the effective output power of the high-frequency generator, the present invention relates to a device for high-frequency surgery involving coagulation and incision in tissue of humans and animals in particular. In accordance with the present invention, (2, 3) detects the high frequency output current and output voltage high-frequency generator (1), a high frequency generator, the peak value of the output current and the high frequency output voltage and the effective value detection device for at least two The measuring and evaluating device (4) as well as the average value of the effective output power of the vessel, compared to the maximum predetermined average value of the effective output power of the high-frequency generator (5) comparator, the average measured value. After that, it is modulated by a modulation signal including a pulse voltage output by the modulator (7). As a method of control (7), a constant peak value of the output voltage whenever the mean value obtained for the effective output power is greater than the maximum average value of the effective output power (6) modulator controller to keep such, the modulating signal consisting of pulses, and / or by modulating the duration of the signal between the like. Alternatively, in order to detect the intensity of the electric arc is formed between the tissue and the electrode connected high frequency generator (1), and is equipped with a sensor to the RF generator. [Selection] Figure Figure 1