System and method for closed loop monitoring of monopolar electrosurgical apparatus

摘要

SYSTEM AND METHOD FOR CLOSED LOOP MONITORING OF MONOPOLAR ELECTROSURGICAL APPARATUS An electrosurgical system (1) is disclosed comprising a generator (10) configured to electrosurgical coagulation waveforms. The generator (10) includes a closed loop control system for controlling the electrosurgical coagulation waveforms. The closed loop control system includes a sensor (32) configured to sense a tissue property and/or an 5 energy property and to transmit the tissue property and/or the energy property as one or more sensor signals having an amplitude. The control system also includes a gain controller (34) configured to process the at least one sensor signal to reduce the amplitude of the sensor signals and to obtain a signal to noise ratio of the at sensor signals within a predetermine range. A microprocessor (22) is coupled to the generator (10) and is 10 configured to adjust the electrosurgical coagulation waveforms as a function of the sensor signals. 7270146vl