公开(公告)号：US11617619B2

公开(公告)日：2023-04-04

申请号：US17089325

申请日：2020-11-04

Applicant: Advanced Neuromodulation Systems, Inc.

Inventor： Seil Oh ,  Binesh Balasingh ,  William Winstrom

IPC: A61B18/16 ,  G01R31/68 ,  A61B18/14 ,  A61B18/00 ,  A61B18/12

Abstract: Disclosed herein is an RF ablation system including a plurality of electrodes, a ground pad, and a signal generator. The electrodes are positioned at respective tissue sites within a patient's body, and the ground pad is positioned on the patient's body. The signal generator is coupled to the ground pad and the electrodes via corresponding channels including a selected channel and unselected channels. The signal generator commutates switching circuits for the corresponding channels to close the selected channel and to open the unselected channels, and measures a first impedance over the selected channel. The signal generator commutates the switching circuits to close the selected channel and the unselected channels, and then measures a second impedance. The signal generator computes a difference between the first and second impedances, and determines the ground pad has at least a poor electrical connection to the patient's body when the difference exceeds a threshold.

公开(公告)号：US20220183753A1

公开(公告)日：2022-06-16

申请号：US17378597

申请日：2021-07-16

Applicant: Advanced Neuromodulation Systems, Inc.

Inventor： Seil Oh ,  Binesh Balasingh ,  William Winstrom ,  Simran Singh

IPC: A61B18/16 ,  A61B18/12

Abstract: The present disclosure provides systems and methods for detecting leakage currents in radio-frequency (RF) ablation systems. An RF generator may be configured to disable an electrical return path from a patient to a ground terminal. The RF generator may also be configured to apply an electrical signal to an electrode that is positioned to be in proximity to target tissue of the patient. The RF generator may be further configured to measure a leakage impedance while the electrical return path is disabled and the electrical signal is applied to the electrode. The RF generator may also be configured to control RF ablation therapy based, at least in part, on the measured leakage impedance. Other features are also claimed and described.

公开(公告)号：US20220133406A1

公开(公告)日：2022-05-05

申请号：US17089325

申请日：2020-11-04

Applicant: Advanced Neuromodulation Systems, Inc.

Inventor： Seil Oh ,  Binesh Balasingh ,  William Winstrom

IPC: A61B18/16 ,  G01R31/68

Abstract: Disclosed herein is an RF ablation system including a plurality of electrodes, a ground pad, and a signal generator. The electrodes are positioned at respective tissue sites within a patient's body, and the ground pad is positioned on the patient's body. The signal generator is coupled to the ground pad and the electrodes via corresponding channels including a selected channel and unselected channels. The signal generator commutates switching circuits for the corresponding channels to close the selected channel and to open the unselected channels, and measures a first impedance over the selected channel. The signal generator commutates the switching circuits to close the selected channel and the unselected channels, and then measures a second impedance. The signal generator computes a difference between the first and second impedances, and determines the ground pad has at least a poor electrical connection to the patient's body when the difference exceeds a threshold.