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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
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.
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公开(公告)号：US11969605B2
公开(公告)日：2024-04-30
申请号：US17412802
申请日：2021-08-26
Applicant: Advanced Neuromodulation Systems, Inc.
Inventor： Luis Ortiz Hernandez , Santhosh Seetharaman , Seil Oh , Edward Lundberg , Nicholas Sachs , Hongxuan Zhang , William Winstrom
CPC classification number: A61N1/3787 , A61N1/37223 , A61N1/37247
Abstract: The present disclosure provides systems and methods for wirelessly charging an implantable medical device. An external charging device includes a coil, signal generating circuitry to drive current through the coil at a charging frequency to induce current in a second coil in the implantable medical device, monitoring circuitry to generate an output signal to monitor charging operations, and a comb filter. The comb filter is configured to apply filtering to the output signal to remove noise from the output signal, wherein the filtering is applied based on the charging frequency. The external charging device is configured to process the filtered output signal to detect a circuit state of charging circuitry of the implantable medical device during charging operations, and the external charging device is configured to vary the charging frequency based, in part, on detection of the circuit state of the charging circuitry of the implantable medical device.
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公开(公告)号：US12256986B2
公开(公告)日：2025-03-25
申请号：US17378597
申请日：2021-07-16
Applicant: Advanced Neuromodulation Systems, Inc.
Inventor： Seil Oh , Binesh Balasingh , William Winstrom , Simran Singh
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.
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Patent Agency Ranking
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
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.
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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
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.
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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
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.
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7.发明公开公开(公告)号：US20240325765A1
公开(公告)日：2024-10-03
申请号：US18620261
申请日：2024-03-28
Applicant: Advanced Neuromodulation Systems, Inc.
Inventor： Luis Ortiz Hernandez , Santhosh Seetharaman , Seil Oh , Edward Lundberg , Nicholas Sachs , Hongxuan Zhang , William Winstrom
CPC classification number: A61N1/3787 , A61N1/37223 , A61N1/37247
Abstract: The present disclosure provides systems and methods for wirelessly charging an implantable medical device. An external charging device includes a coil, signal generating circuitry to drive current through the coil at a charging frequency to induce current in a second coil in the implantable medical device, monitoring circuitry to generate an output signal to monitor charging operations, and a comb filter. The comb filter is configured to apply filtering to the output signal to remove noise from the output signal, wherein the filtering is applied based on the charging frequency. The external charging device is configured to process the filtered output signal to detect a circuit state of charging circuitry of the implantable medical device during charging operations, and the external charging device is configured to vary the charging frequency based, in part, on detection of the circuit state of the charging circuitry of the implantable medical device.
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公开(公告)号：US20220193426A1
公开(公告)日：2022-06-23
申请号：US17412802
申请日：2021-08-26
Applicant: Advanced Neuromodulation Systems, Inc.
Inventor： Luis Ortiz Hernandez , Santhosh Seetharaman , Seil Oh , Edward Lundberg , Nicholas Sachs , Hongxuan Zhang , William Winstrom
Abstract: The present disclosure provides systems and methods for wirelessly charging an implantable medical device. An external charging device includes a coil, signal generating circuitry to drive current through the coil at a charging frequency to induce current in a second coil in the implantable medical device, monitoring circuitry to generate an output signal to monitor charging operations, and a comb filter. The comb filter is configured to apply filtering to the output signal to remove noise from the output signal, wherein the filtering is applied based on the charging frequency. The external charging device is configured to process the filtered output signal to detect a circuit state of charging circuitry of the implantable medical device during charging operations, and the external charging device is configured to vary the charging frequency based, in part, on detection of the circuit state of the charging circuitry of the implantable medical device.
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