Loading patent…
AssigneeCovidien LP
InventorsERIC J. LARSON, CAROLYN G. FORD, ALEXANDER M. WASKIEWICZ
Estimating the term…
The electrosurgical systems and methods of the present disclosure include a tissue resistance measurement system that compensates for capacitive parasitics in a cable connecting an electrosurgical generator to and electrosurgical cable to estimate the real resistance of a tissue load. The electrosurgical generator includes an output stage coupled to an electrical energy source and generates electrosurgical energy. The electrosurgical generator includes a plurality of sensors sensing a voltage and current of the electrosurgical energy and a controller controlling the output stage. The controller includes a calculator that calculates a real part of an impedance based on the sensed voltage and current, an estimator that estimates a resistance of the tissue using a solution to a quadratic equation that is a function of the real part of the impedance, and a control signal generator configured to generate a control signal for the output stage based on the resistance of the tissue.
An electrosurgical generator that delivers electrosurgical energy to tissue via a cable and an instrument coupled to the cable, the electrosurgical generator comprising:
A method of controlling an electrosurgical generator that delivers electrosurgical energy to tissue via a cable and an instrument coupled to the cable, the method comprising:
A non-transitory computer-readable storage medium storing a program that, when executed a processor, performs a method of controlling an electrosurgical generator that delivers electrosurgical energy to tissue via a cable and an instrument coupled to the cable, the method comprising:
Dependencies are inferred from the claim text.