Patent ID: 7651492
Filing Date: 2010-01-26
Classification: A61B

Abstract:
1. An electrosurgical system comprising: an electrosurgical generator adapted to supply electrosurgical energy to tissue in the form of at least one electrosurgical waveform having a crest factor and a duty cycle; sensor circuitry adapted to measure impedance and to obtain at least one measured impedance signal, the sensor circuitry further adapted to generate at least one arc detection signal upon detection of an arcing condition; a high pass filter adapted to filter the at least one measured impedance signal to obtain an absolute value thereof; a low pass filter adapted to filter the absolute value of the at least one measured impedance signal to obtain the at least one arc detection signal; a controller adapted to generate at least one target control signal as a function of the at least one measured impedance signal and to adjust output of the electrosurgical generator based on the at least one arc detection signal; and an electrosurgical instrument including at least one active electrode adapted to apply electrosurgical energy to tissue.