公开(公告)号：US20220008113A1

公开(公告)日：2022-01-13

申请号：US16924291

申请日：2020-07-09

Applicant: Advanced Neuromodulation Systems, Inc.

Inventor： Seil Oh ,  Binesh Balasingh ,  Christopher Ayers

IPC: A61B18/12 ,  A61B18/14 ,  G16H40/63 ,  G16H40/40 ,  G05B19/4155 ,  G05D23/19

Abstract: The present disclosure provides systems and methods for controlling temperature in a radiofrequency (RF) ablation system. A temperature control system includes a subtractor circuit configured to calculate a temperature error as a difference between a target temperature and a measured temperature at a tip of a cannula, and a proportional-integral-derivative (PID) controller coupled to the subtractor circuit and configured to apply an RF voltage to the tip of the cannula, the PID controller configured to determine the RF voltage based on the temperature error and a proportional coefficient, an integral coefficient, and a derivative coefficient of the PID controller. The temperature control system further includes a PID coefficient controller coupled to the PID controller, the PID coefficient controller configured to dynamically adjust the proportional, integral, and derivative coefficients of the PID controller during operation of the RF ablation system.