US 11,969,201 B2
Control systems for electrosurgical generator
Robert H. Wham, Boulder, CO (US); Edward L. Brannan, Erie, CO (US); William D. Faulkner, Boulder, CO (US); Mark A. Johnston, Boulder, CO (US); Aaron G. Mattmiller, Longmont, CO (US); and Donald L. Tonn, Superior, CO (US)
Assigned to Covidien LP, Mansfield, MA (US)
Filed by Covidien LP, Mansfield, MA (US)
Filed on Aug. 17, 2021, as Appl. No. 17/403,977.
Application 17/403,977 is a continuation of application No. 15/098,822, filed on Apr. 14, 2016, granted, now 11,090,106.
Claims priority of provisional application 62/151,626, filed on Apr. 23, 2015.
Prior Publication US 2021/0369324 A1, Dec. 2, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 18/12 (2006.01); A61B 18/00 (2006.01)
CPC A61B 18/1233 (2013.01) [A61B 18/1206 (2013.01); A61B 2018/00642 (2013.01); A61B 2018/00666 (2013.01); A61B 2018/0072 (2013.01); A61B 2018/0075 (2013.01); A61B 2018/00767 (2013.01); A61B 2018/00827 (2013.01); A61B 2018/00892 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method for controlling an electrosurgical generator comprising:
generating a first component of an electrosurgical waveform at a first pair of switches of a radio frequency (RF) inverter and a second component of the electrosurgical waveform at a second pair of switches of the RF inverter, wherein the first pair of switches and the second pair of switches are arranged in an H-bridge configuration;
obtaining a measured value of at least one of a voltage, a current, or power of the first and second components of the electrosurgical waveform;
generating a desired value for at least one of the voltage, the current, or the power of the first and second components of the electrosurgical waveform;
generating a phase shift between the first and second components of the electrosurgical waveform based on the measured value and the desired value; and
generating at an RF inverter controller a pulse-width modulation (PWM) signal based on the phase shift to control the RF inverter.