System and method for controlling tissue heating rate prior to cellular vaporization
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United States of America Patent
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N/A
Issued Date -
Dec 6, 2007
app pub date -
May 30, 2006
filing date -
May 30, 2006
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A system and method for performing electrosurgical procedures are disclosed. The system includes an electrosurgical generator adapted to supply energy at an output level to tissue and to transmit an interrogatory signal to obtain initial tissue impedance to derive a starting impedance value. The electrosurgical generator includes a microprocessor adapted to generate a desired impedance trajectory as a function of either of the initial tissue impedance or the starting impedance value. The desired impedance trajectory includes a plurality of target impedance values. The electrosurgical generator is further adapted to drive tissue impedance along the desired impedance trajectory by adjusting the output level to match tissue impedance to a corresponding target impedance value. The system also includes an electrosurgical instrument including at least one active electrode adapted to apply electrosurgical energy to tissue.
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