System and method for closed loop monitoring of monopolar electrosurgical apparatus
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United States of America Patent
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Sep 18, 2012
Grant Date -
Jul 21, 2011
app pub date -
Mar 29, 2011
filing date -
Jan 24, 2006
priority date (Note) -
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Abstract
An electrosurgical system is disclosed comprising a generator configured to electrosurgical coagulation waveforms. The generator includes a closed loop control system for controlling the electrosurgical coagulation waveforms. The closed loop control system includes a sensor configured to sense a tissue property and/or an 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 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 coupled to the generator and is configured to adjust the electrosurgical coagulation waveforms as a function of the sensor signals.
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