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    Ultra low power analog to digital interface using range adaptive techniques
    11.
    发明授权
    Ultra low power analog to digital interface using range adaptive techniques 有权
    超低功耗模数转换器采用量程自适应技术

    公开(公告)号：US08941523B1

    公开(公告)日：2015-01-27

    申请号：US14189172

    申请日：2014-02-25

    Applicant: Medtronic, Inc.

    Inventor： Xiaonan Shen ,  Jonathan P. Roberts

    IPC: H03M1/12 ,  H03M1/36 ,  H03M1/00

    CPC classification number: H03M1/002 ,  H03M1/00 ,  H03M1/365 ,  H03M1/462

    Abstract: A medical device and associated method convert an analog signal using an adaptable number of comparisons between the analog signal and a reference signal. The medical device includes an analog-to-digital (A/D) converter for receiving an analog signal. The A/D converter has a full scale range and a total number of bits spanning the full scale range. The A/D converter converts the analog signal to a digital signal over conversion cycles using an adaptable number of comparisons. For at least one of the conversion cycles, the adaptable number of comparisons is less than the total number of comparisons required to convert the analog signal over the full scale range of the A/D converter.

    Abstract translation: 医疗设备和相关方法使用模拟信号和参考信号之间的适应数量的比较来转换模拟信号。 医疗设备包括用于接收模拟信号的模数（A / D）转换器。 A / D转换器具有满量程范围，并且跨越满量程范围的总位数。 A / D转换器通过适应性数量的比较，将转换周期的模拟信号转换为数字信号。 对于至少一个转换周期，适应性比较数量小于在A / D转换器的满量程范围内转换模拟信号所需的总比较数。

    RECTIFIER AND THE TIMING OF SWITCHING OF CAPACITORS
    15.
    发明申请
    RECTIFIER AND THE TIMING OF SWITCHING OF CAPACITORS 有权

    公开(公告)号：US20220062620A1

    公开(公告)日：2022-03-03

    申请号：US17462905

    申请日：2021-08-31

    Applicant: Medtronic, Inc.

    Inventor： Jacob A Roe ,  Jonathan P. Roberts ,  Joel B. Artmann ,  David J. Peichel ,  Michael Kemmerer

    IPC: A61M60/873 ,  A61M60/148

    Abstract: An internal coil interface implantable within the body of a patient and configured to modulate a load on an internal coil, and a method therefore are provided. According to one aspect, processing circuitry of the internal coil interface is configured to predict a time of a first voltage level crossing by a voltage at a terminal of the internal coil for each of a plurality of successive windows each time the capacitance is switched into the modulated load circuit or each time the capacitance is switched out of the modulated load circuit. The process is also configured to adjust the predictions based on whether a previous prediction of a time of a first voltage level crossing for a window was later or earlier than a time at which the first voltage level crossing actually occurred.

    Method of detecting presence of implanted power transfer coil
    16.
    发明授权
    Method of detecting presence of implanted power transfer coil 有权

    公开(公告)号：US11063479B1

    公开(公告)日：2021-07-13

    申请号：US16841904

    申请日：2020-04-07

    Applicant: Medtronic, Inc.

    Inventor： David J. Peichel ,  Jonathan P. Roberts ,  Jacob A. Roe

    IPC: H02J50/80 ,  H02J50/90 ,  H02J50/12 ,  A61N1/378

    Abstract: A method and apparatus related to detecting the presence of a power transfer coil implanted in a patient are disclosed. According to the aspect, an external device of a medical implant system is provided, the external device having an external coil and processing circuitry. The processing circuitry is configured to monitor a resonance frequency associated with the external coil. When the resonance frequency changes as a distance between the external coil and an expected location of an internal coil, then the processing circuitry is configured to conclude that the internal coil has been detected. When the resonance frequency ramps up to a steady state value at a rate that falls below a rate threshold, then the processing circuitry is configured to conclude that the internal coil is connected to an internal load.

    CLOCK SYNCHRONIZATION IN AN IMPLANTABLE MEDICAL DEVICE SYSTEM
    18.
    发明申请
    CLOCK SYNCHRONIZATION IN AN IMPLANTABLE MEDICAL DEVICE SYSTEM 有权
    可插入医疗设备系统中的时钟同步

    公开(公告)号：US20130138991A1

    公开(公告)日：2013-05-30

    申请号：US13746818

    申请日：2013-01-22

    Applicant: Medtronic, Inc.

    Inventor： James D. Reinke ,  Robert M. Ecker ,  Kaustubh R. Patil ,  Michael B. Terry ,  Jonathan P. Roberts ,  Robert A. Corey

    IPC: G06F1/12 ,  G06F1/06

    CPC classification number: G06F1/12 ,  A61N1/37288 ,  G06F1/06

    Abstract: This disclosure is directed to the synchronization of clocks of a secondary implantable medical device (IMD) to a clock of a primary IMD. The secondary IMD includes a communications clock. The communications clock may be synchronized based on at least one received communications pulse. The secondary IMD further includes a general purpose clock different than the communications clock. The general purpose clock may be synchronized based on at least one received power pulse. The communications clock may also be synchronized based on the at least one received power pulse.

    Abstract translation: 本公开涉及二次可植入医疗装置（IMD）的时钟与主IMD的时钟的同步。 辅助IMD包括通信时钟。 通信时钟可以基于至少一个接收到的通信脉冲来同步。 次级IMD还包括与通信时钟不同的通用时钟。 可以基于至少一个接收的功率脉冲同步通用时钟。 通信时钟也可以基于至少一个接收的功率脉冲来同步。

    Method of detecting presence of implanted power transfer coil
    20.
    发明授权
    Method of detecting presence of implanted power transfer coil 有权

    公开(公告)号：US11660458B2

    公开(公告)日：2023-05-30

    申请号：US17353893

    申请日：2021-06-22

    Applicant: Medtronic, Inc.

    Inventor： David J. Peichel ,  Jonathan P. Roberts ,  Jacob A. Roe

    IPC: A61N1/37 ,  A61N1/378 ,  H02J50/80 ,  H02J50/90 ,  H02J50/12 ,  A61N1/372

    CPC classification number: A61N1/3787 ,  A61N1/37211 ,  H02J50/12 ,  H02J50/80 ,  H02J50/90

    Abstract: A method and apparatus related to detecting the presence of a power transfer coil implanted in a patient are disclosed. According to the aspect, an external device of a medical implant system is provided, the external device having an external coil and processing circuitry. The processing circuitry is configured to monitor a resonance frequency associated with the external coil. When the resonance frequency changes as a distance between the external coil and an expected location of an internal coil, then the processing circuitry is configured to conclude that the internal coil has been detected. When the resonance frequency ramps up to a steady state value at a rate that falls below a rate threshold, then the processing circuitry is configured to conclude that the internal coil is connected to an internal load.

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