Method and system for controlling output of RF medical generator
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United States of America Patent
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Jan 31, 2012
Grant Date -
Feb 15, 2007
app pub date -
Oct 24, 2006
filing date -
Oct 23, 1998
priority date (Note) -
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status (Latency Note)
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Abstract
An electrosurgical generator is disclosed. The generator includes a microprocessor configured to generate a target impedance trajectory having at least one slope. The target impedance trajectory includes a plurality of target impedance values. The microprocessor is configured to drive tissue impedance along the target impedance trajectory by adjusting the output level to substantially match tissue impedance to a corresponding target impedance value. The microprocessor is further configured to compare tissue impedance to a threshold impedance value and adjust output of the electrosurgical generator when the tissue impedance is equal to or greater than the threshold impedance.
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