Surgery – Instruments – Electrical application
Reexamination Certificate
2006-08-08
2011-10-11
Gibson, Roy (Department: 3739)
Surgery
Instruments
Electrical application
C606S038000, C606S042000, C606S051000
Reexamination Certificate
active
08034049
ABSTRACT:
An electrosurgical system and method are disclosed. The system includes an electrosurgical generator adapted to supply electrosurgical energy to tissue. The generator is further adapted to supply an electrical signal having at least one substantially constant value to tissue to determine initial tissue impedance response. The generator includes sensor circuitry adapted to continuously monitor initial tissue impedance response, wherein the initial tissue impedance response includes one of an initial impedance, an impedance drop, an impedance minimum and a first impedance rise. The generator also includes a microprocessor adapted to generate at least one tissue parameter based as a function of the initial impedance, the impedance drop, the impedance minimum and the first impedance rise. The system also includes an electrosurgical instrument including at least one active electrode adapted to apply electrosurgical energy to tissue for treatment.
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patent
Denham Amy
Odom Darren
Weinberg Craig
Covidien AG
Gibson Roy
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