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    System and method for alignment of a wireless charger to an implantable medical device
    2.
    发明授权
    System and method for alignment of a wireless charger to an implantable medical device 有权

    公开(公告)号：US12070612B2

    公开(公告)日：2024-08-27

    申请号：US17135725

    申请日：2020-12-28

    Applicant: Advanced Neuromodulation Systems Inc.

    Inventor： Luis Ortiz Hernandez

    IPC: A61N1/378 ,  H02J50/10 ,  H02J50/90

    CPC classification number: A61N1/3787 ,  H02J50/10 ,  H02J50/90

    Abstract: A magnetic field sensor is positioned in proximity to a charging coil in an implantable medical device (IMD). An external device for charging the IMD includes a primary coil and a magnet positioned in proximity to the primary coil. The magnetic field sensor in the IMD detects a static magnetic field of the magnet and provides measurements proportional to the static magnetic field along three axes. These measurements of the static magnetic field are used to determine whether the external device is aligned with the IMD for charging. These measurements of the static magnetic field may also be processed to determine a position of the charger device relative to the IMD in three dimensions. When misaligned, a direction may be generated for a user to reposition the charger device to improve alignment.

    SYSTEM AND METHOD FOR ALIGNMENT OF A WIRELESS CHARGER TO AN IMPLANTABLE MEDICAL DEVICE
    3.
    发明申请
    SYSTEM AND METHOD FOR ALIGNMENT OF A WIRELESS CHARGER TO AN IMPLANTABLE MEDICAL DEVICE 有权

    公开(公告)号：US20220203103A1

    公开(公告)日：2022-06-30

    申请号：US17135725

    申请日：2020-12-28

    Applicant: Advanced Neuromodulation Systems Inc.

    Inventor： Luis Ortiz Hernandez

    IPC: A61N1/378 ,  H02J50/10 ,  H02J50/90

    Abstract: A magnetic field sensor is positioned in proximity to a charging coil in an implantable medical device (IMD). An external device for charging the IMD includes a primary coil and a magnet positioned in proximity to the primary coil. The magnetic field sensor in the IMD detects a static magnetic field of the magnet and provides measurements proportional to the static magnetic field along three axes. These measurements of the static magnetic field are used to determine whether the external device is aligned with the IMD for charging. These measurements of the static magnetic field may also be processed to determine a position of the charger device relative to the IMD in three dimensions. When misaligned, a direction may be generated for a user to reposition the charger device to improve alignment.

    METHOD AND APPARATUS FOR WIRELESS CHARGING OF A RECEIVER DEVICE BY A WIRELESS CHARGER DEVICE
    6.
    发明申请
    METHOD AND APPARATUS FOR WIRELESS CHARGING OF A RECEIVER DEVICE BY A WIRELESS CHARGER DEVICE 有权

    公开(公告)号：US20220407366A1

    公开(公告)日：2022-12-22

    申请号：US17353768

    申请日：2021-06-21

    Applicant: Advanced Neuromodulation Systems, Inc.

    Inventor： Hongxuan Zhang ,  Li Sun ,  Luis Ortiz Hernandez

    IPC: H02J50/80 ,  H02J7/02 ,  H02J7/00 ,  H02J50/10 ,  A61N1/378

    Abstract: A method of operation of a wireless charger device includes transmitting a wireless charging signal to a receiver device. The method further includes receiving a clamping pulse from the receiver device based on the wireless charging signal. The clamping pulse indicates a first value associated with a falling edge of the clamping pulse and further indicates a second value associated with a rising edge of the clamping pulse. The clamping pulse is detected based on a comparison of a first threshold with the first value and further based on a comparison of a second threshold with the second value, and the second threshold is different than the first threshold. The method further includes determining a charging state of the receiver device based on the clamping pulse.

    SYSTEMS AND METHODS FOR NOISE FILTERING IN IMPLANTABLE MEDICAL DEVICE CHARGING SYSTEMS
    7.
    发明申请
    SYSTEMS AND METHODS FOR NOISE FILTERING IN IMPLANTABLE MEDICAL DEVICE CHARGING SYSTEMS 有权

    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

    IPC: A61N1/378 ,  A61N1/372

    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.

    Compressed PKI methods for machine-to-machine authentication in bandwidth-constrained medical devices
    8.
    发明授权
    Compressed PKI methods for machine-to-machine authentication in bandwidth-constrained medical devices 有权

    公开(公告)号：US12177367B1

    公开(公告)日：2024-12-24

    申请号：US17982853

    申请日：2022-11-08

    Applicant: Advanced Neuromodulation Systems, Inc.

    Inventor： Greg Creek ,  Steve Gray ,  Daran DeShazo ,  Luis Ortiz Hernandez

    IPC: H04L9/32 ,  G16H40/67

    Abstract: Embodiments provide methods of conducting operations with an implantable medical device (IMD) and an external controller device for performing authentication operations. In some embodiments, the method comprises: generating or storing an authentication data structure in the external controller device for over-the-air communication between the external device and the IMD, wherein the authentication data structure is generated by: (1) removing attribute fields from a first digital certificate and adding a public key of the external controller device to form an intermediate data structure; (2) creating a digital signature of the first intermediate data structure using a second digital certificate of an issuing certificate authority (CA); and (3) forming the authentication data structure by combining the intermediate data structure, the created digital signature, a public key of the issuing CA, and a digital signature of the public key of the issuing CA created using a third digital certificate of a root CA.

    SYSTEM AND METHOD FOR REDUCING HEAT OF AN IMPLANTABLE MEDICAL DEVICE DURING WIRELESS CHARGING
    10.
    发明申请
    SYSTEM AND METHOD FOR REDUCING HEAT OF AN IMPLANTABLE MEDICAL DEVICE DURING WIRELESS CHARGING 有权

    公开(公告)号：US20220203104A1

    公开(公告)日：2022-06-30

    申请号：US17170473

    申请日：2021-02-08

    Applicant: Advanced Neuromodulation Systems Inc.

    Inventor： Luis Ortiz Hernandez ,  Li Sun ,  Nicholas Sachs

    IPC: A61N1/378 ,  A61N1/372

    Abstract: A wireless charger device is configured to charge an implantable medical device (IMD). A patient controller obtains one or more power parameters from the charger device during charging of the IMD. The patient controller estimates a temperature range of the IMD using the one or more power parameters from the charger device and compares to a heating threshold. The patient controller then determines whether one or more spacers are recommended in response to the comparison. The one or more spacers are removably attached to the wireless charger device and are configured to lay in a position between the wireless charger device and a patient's skin to increase a charging path.

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