ARC based adaptive control system for an electrosurgical unit
First Claim
1. A method for controlling an electrosurgical generator, the method comprising the steps of:
- outputting electrosurgical energy;
measuring impedance to obtain at least one measured impedance signal;
filtering the at least one measured impedance signal to detect an arcing condition; and
adjusting a PID gain of a controller of the electrosurgical generator to adjust the output of electrosurgical energy in response to the detected arcing condition without terminating the output of electrosurgical energy.
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Accused Products
Abstract
A system and method for performing electrosurgical procedures are disclosed. The system includes an electrosurgical generator adapted to supply electrosurgical energy to tissue in form of one or more electrosurgical waveforms having a crest factor and a duty cycle. The system also includes sensor circuitry adapted to measure impedance and to obtain one or more measured impedance signals. The sensor circuitry is further adapted to generate one or more arc detection signals upon detecting an arcing condition§. The system further includes a controller adapted to generate one or more target control signals as a function of the measured impedance signals and to adjust output of the electrosurgical generator based on the arc detection signal. An electrosurgical instrument is also included having one or more active electrodes adapted to apply electrosurgical energy to tissue.
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Citations
14 Claims
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1. A method for controlling an electrosurgical generator, the method comprising the steps of:
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outputting electrosurgical energy; measuring impedance to obtain at least one measured impedance signal; filtering the at least one measured impedance signal to detect an arcing condition; and adjusting a PID gain of a controller of the electrosurgical generator to adjust the output of electrosurgical energy in response to the detected arcing condition without terminating the output of electrosurgical energy. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for controlling an electrosurgical generator, the method comprising the steps of:
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outputting electrosurgical energy; measuring impedance to obtain at least one measured impedance signal; filtering the at least one measured impedance signal to detect an arcing condition; substituting a maximum impedance value measured during the arcing condition for the at least one measured impedance signal; adjusting the output of electrosurgical energy in response to the detected arcing condition without terminating the output of electrosurgical energy; and generating at least one target control signal as a function of the at least one measured impedance signal, the at least one target control signal controlling the output of electrosurgical energy.
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Specification