Patent ID: 7137980

Claim:
A closed-loop control system for use with an electrosurgical generator that generates electrosurgical energy including at least one pulse, said closed loop control system comprising: a user interface which allows a user to select at least one pre-surgical parameter, said at least one pre-surgical parameter including at least one of a type of surgical instrument operatively connected to the generator, type of tissue and desired surgical effect; a sensor module which continually senses at least one of electrical and physical properties proximate a surgical site and generating at least one signal relating thereto; and a control module which continually receives said selected at least one pre-surgical parameter from said user interface and said at least one signal from said sensor module, and processing said at least one signal in accordance with the at least one pre-surgical parameter using at least one of a microprocessor, computer algorithm and a mapping, said control module generating at least one corresponding control signal relating to said at least one signal from said sensor module, and providing the at least one control signal to the electrosurgical generator for controlling the generator; wherein said control module comprises a plurality of loop control modules with at least a first loop control module of said plurality of loop control modules providing a ratio between a real time parameter value and a desired parameter value; said real time parameter value being from said at least one signal from said sensor module, and wherein said first loop control modules modulates another of said plurality of loop control modules based in part on said ratio to control the generator.