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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：US20230116095A1
公开(公告)日：2023-04-13
申请号：US18078244
申请日：2022-12-09
Applicant: ADVANCED NEUROMODULATION SYSTEMS, INC.
Inventor： William Winstrom
Abstract: A charging energy control system includes an implantable medical device (IMD) and an external charger for effectuating wireless power transfer. The IMD receives charging energy to recharge a battery during an ON period and rejects the charging energy during an OFF period. A series switch is disposed between the IMD’s coil and rectifier circuitry that is controlled by voltage regulation circuitry operative to generate a clamp control signal configured to detune the coil in the OFF state.
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公开(公告)号：US11547862B2
公开(公告)日：2023-01-10
申请号：US16676197
申请日：2019-11-06
Applicant: ADVANCED NEUROMODULATION SYSTEMS, INC.
Inventor： William Winstrom
Abstract: A charging energy control system includes an implantable medical device (IMD) and an external charger for effectuating wireless power transfer. The IMD receives charging energy to recharge a battery during an ON period and rejects the charging energy during an OFF period. A series switch is disposed between the IMD's coil and rectifier circuitry that is controlled by voltage regulation circuitry operative to generate a clamp control signal configured to detune the coil in the OFF state.
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公开(公告)号：US12144534B2
公开(公告)日：2024-11-19
申请号：US16446458
申请日：2019-06-19
Applicant: ADVANCED NEUROMODULATION SYSTEMS, INC.
Inventor： William Winstrom
Abstract: An ablation system and method are provided. The ablation system includes an ablation power generator configured to generate ablation energy. An active electrode is coupled to the ablation power generator and is configured to deliver the ablation energy to ablation tissue of interest during an ablation procedure. A return electrode arrangement (REA) is coupled to the ablation power generator and is configured to engage remote tissue, at a remote location from the ablation tissue of interest, to provide a return path during the ablation procedure. The REA transitions between an engaged and disengaged state with the remote tissue. An electrode-tissue engagement (ETE) circuit includes a resonant circuit coupled to the REA. The ETE circuit is configured to detect when the REA is in the engaged state or disengaged state.
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5.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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Patent Agency Ranking
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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公开(公告)号：US20200324126A1
公开(公告)日：2020-10-15
申请号：US16676197
申请日：2019-11-06
Applicant: Advanced Neuromodulation Systems, Inc.
Inventor： William Winstrom
Abstract: A charging energy control system includes an implantable medical device (IMD) and an external charger for effectuating wireless power transfer. The IMD receives charging energy to recharge a battery during an ON period and rejects the charging energy during an OFF period. A series switch is disposed between the IMD's coil and rectifier circuitry that is controlled by voltage regulation circuitry operative to generate a clamp control signal configured to detune the coil in the OFF state.
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公开(公告)号：US20200323577A1
公开(公告)日：2020-10-15
申请号：US16446458
申请日：2019-06-19
Applicant: ADVANCED NEUROMODULATION SYSTEMS, INC.
Inventor： William Winstrom
Abstract: An ablation system and method are provided. The ablation system includes an ablation power generator configured to generate ablation energy. An active electrode is coupled to the ablation power generator and is configured to deliver the ablation energy to ablation tissue of interest during an ablation procedure. A return electrode arrangement (REA) is coupled to the ablation power generator and is configured to engage remote tissue, at a remote location from the ablation tissue of interest, to provide a return path during the ablation procedure. The REA transitions between an engaged and disengaged state with the remote tissue. An electrode-tissue engagement (ETE) circuit includes a resonant circuit coupled to the REA. The ETE circuit is configured to detect when the REA is in the engaged state or disengaged state.
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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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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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