Patent ID: 6293941
Filing Date: 2001-09-25
Classification: A61B,Y10S

Abstract:
A method for controlling power delivery in an electro-surgical instrument including a first channel and a second channel for delivery of an energy to a surgical site, and the method for controlling power comprising the acts of:determining a target value for a control parameter for the first channel and the second channel, the target value determined by matching an elapsed operating time with a corresponding control parameter profile of a control parameter schedule listing values for the control parameter as a function of time;measuring a first power level of the first channel during a first measurement interval in which the first channel is electrically isolated from the second channel;measuring a second power level of the second channel during a second measurement interval in which the second channel is electrically isolated from the first channel; andadjusting the first power level and the second power level to minimize a difference between a measured value of the control parameter and the target value of the control parameter, to deliver the energy to the surgical site during a heating interval.