US 11,864,812 B2
Electrosurgical generator control system
Michael Nguyen, Rancho Santa Margarita, CA (US); Igor Gorin, Rancho Santa Margarita, CA (US); and Joanna Pang, Rancho Santa Margarita, CA (US)
Assigned to Applied Medical Resources Corporation, Rancho Santa Margarita, CA (US)
Filed by Applied Medical Resources Corporation, Rancho Santa Margarita, CA (US)
Filed on Sep. 5, 2019, as Appl. No. 16/562,362.
Claims priority of provisional application 62/727,195, filed on Sep. 5, 2018.
Prior Publication US 2020/0069358 A1, Mar. 5, 2020
Int. Cl. A61B 18/12 (2006.01); A61B 18/00 (2006.01); A61B 18/14 (2006.01)
CPC A61B 18/1206 (2013.01) [A61B 18/1445 (2013.01); A61B 2018/0063 (2013.01); A61B 2018/00601 (2013.01); A61B 2018/00642 (2013.01); A61B 2018/00726 (2013.01); A61B 2018/00767 (2013.01); A61B 2018/00779 (2013.01); A61B 2018/00827 (2013.01); A61B 2018/00875 (2013.01); A61B 2018/00892 (2013.01); H03F 2200/129 (2013.01); H03F 2200/451 (2013.01); H03G 2201/103 (2013.01); H03G 2201/307 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A digital closed-loop control system for use with an electrosurgical generator that supplies electrosurgical RF energy to a surgical site, the digital closed-loop control system comprising:
a feedback system for continually monitoring electrical properties of the supplied RF energy to the surgical site as a concurrent surgical condition and generating digital RF signals relating thereto; and
a microcontroller, responsive to the generated digital RF signals from the feedback system, is configured with a variable gain factor to regulate and control an RF amplifier that generates the supplied RF energy across a plurality of RF resolution settings and a plurality of RF regulation modes,
wherein the microcontroller is further configured to compute the variable gain factor for each of the plurality of RF regulation modes and select one of the computed variable gain factors based on individual error values calculated for each of the plurality of RF regulation modes; the variable gain factor being selected based on a most positive error value.