Arc based adaptive control system for an electrosurgical unit
First Claim
1. An electrosurgical system comprising:
- an electrosurgical generator adapted to supply electrosurgical energy to tissue in 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 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.
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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
15 Claims
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1. An electrosurgical system comprising:
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an electrosurgical generator adapted to supply electrosurgical energy to tissue in 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 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. - View Dependent Claims (2, 3, 4, 5)
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6. A method for performing an electrosurgical procedure comprising the steps of:
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supplying electrosurgical energy from an electrosurgical generator to tissue in form of at least one electrosurgical waveform having a crest factor and a duty cycle;
measuring impedance to obtain at least one measured impedance signal;
generating at least one arc detection signal upon detecting an arcing conditions;
generating at least one target control signal as a function of the at least one measured impedance signal; and
adjusting output of the electrosurgical generator based on the at least one arc detection signal. - View Dependent Claims (7, 8, 9, 10)
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11. An electrosurgical generator:
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an RF output stage adapted to supply electrosurgical energy to tissue in 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 detecting an arcing condition; and
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. - View Dependent Claims (12, 13, 14, 15)
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Specification