Electrosurgical Generator Having Boost Mode Control Based on Impedance
First Claim
1. A method of controlling output power of an electrosurgical generator apparatus that controls a variable output signal to a pair of electrodes, the method comprising:
- (a) setting the output power of the generator apparatus to a selected power output level;
(b) measuring an impedance across the electrodes using an impedance monitoring circuit when the electrodes are applied to an area of tissue;
(c) changing the output power of the generator apparatus to a boost power output level greater than the selected power output level, the boost power output level corresponding to a calculation based at least in part on the measured impedance;
(d) applying the output signal to the electrodes at the boost power output level for a first time duration; and
(e) changing the power of the output signal applied to the electrodes to the selected power output level after the first time duration.
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Accused Products
Abstract
A method of controlling output power of an electrosurgical generator apparatus that controls a variable output signal to a pair of electrodes includes setting the output power of the generator apparatus to a selected power output level. An impedance is measured across the electrodes when the electrodes are applied to an area of tissue. The output power of the generator apparatus is changed to a boost power output level greater than the selected power output level. The boost power output level corresponds to a calculation based at least in part on the measured impedance. The method further includes applying the output signal to the electrodes at the boost power output level for a first time duration and changing the power output to the selected power output level after the first time duration. An electrosurgical generator apparatus operating in accordance with the method is also described.
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Citations
19 Claims
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1. A method of controlling output power of an electrosurgical generator apparatus that controls a variable output signal to a pair of electrodes, the method comprising:
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(a) setting the output power of the generator apparatus to a selected power output level; (b) measuring an impedance across the electrodes using an impedance monitoring circuit when the electrodes are applied to an area of tissue; (c) changing the output power of the generator apparatus to a boost power output level greater than the selected power output level, the boost power output level corresponding to a calculation based at least in part on the measured impedance; (d) applying the output signal to the electrodes at the boost power output level for a first time duration; and (e) changing the power of the output signal applied to the electrodes to the selected power output level after the first time duration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An electrosurgical generator apparatus that controls a variable output signal to a pair of electrodes, the generator apparatus comprising:
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(a) a controller for controlling the generator apparatus; (b) an impedance monitoring circuit that detects an impedance as measured across the electrodes when the electrodes are applied to an area of tissue; and (c) a memory for storing predetermined values for calculating a boost power output level based at least in part on the measured impedance, the controller being configured to change a selected power output level to the boost power output level based at least in part on the measured impedance for a first time duration and change the boost power output level to the selected power output level after the first time duration. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification