Near-instantaneous responsive closed loop control electrosurgical generator and method
First Claim
1. An electrosurgical generator having a control system which comprises an array of logic gates programmed to execute mathematical algorithms for regulating at least one parameter of output power, output voltage or output current of a radio frequency electrosurgical output signal in a closed loop feedback response to digital samples of sensed instantaneous values of the output voltage and the output current in cycles of the output signal.
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Abstract
An electrosurgical generator has a control system formed by an array of logic gates programmed to execute mathematical algorithms for regulating at least one parameter of output power, output voltage or output current of an output electrosurgical signal in a closed loop response to sensed values of the output voltage and the output current.
290 Citations
37 Claims
- 1. An electrosurgical generator having a control system which comprises an array of logic gates programmed to execute mathematical algorithms for regulating at least one parameter of output power, output voltage or output current of a radio frequency electrosurgical output signal in a closed loop feedback response to digital samples of sensed instantaneous values of the output voltage and the output current in cycles of the output signal.
- 18. A method for regulating at least one parameter of output power, output voltage or output current of a radio frequency output electrosurgical signal by executing mathematical algorithms programmed into an array of logic gates which define a closed loop feedback response to digital samples of sensed instantaneous values of the output voltage and the output current in cycles of the output signal.
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25. An electrosurgical generator which delivers an output electrosurgical signal and has a closed loop control system which comprises an output signal simulator which calculates simulated values representative of output voltage and output current of the output signal, and an output value calculator which calculates parameter values from the simulated values wherein the parameter values relate to at least one parameter of output power or output voltage or output current of the output signal, and an output controller which calculates a feedback error signal and a control signal from the parameter values wherein the control signal regulates at least one parameter of output power or output voltage or output current of the output signal;
- and wherein the calculations are performed by mathematical algorithms executed by the output signal simulator, the output value calculator and the output controller; and
wherein the output signal simulator and the output value calculator comprise an array of logic gates programmed to execute the mathematical algorithms of the output signal simulator and the output value calculator. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
- and wherein the calculations are performed by mathematical algorithms executed by the output signal simulator, the output value calculator and the output controller; and
Specification