Managing recharge power for implantable medical devices

    公开(公告)号:US10226636B2

    公开(公告)日:2019-03-12

    申请号:US15560950

    申请日:2016-04-22

    Abstract: Devices, systems, and techniques for estimating energy transfer to tissue of a patient during battery charging for an implantable medical device are disclosed. Implantable medical devices may include a rechargeable power source that can be transcutaneously charged. An external charging device may calculate an estimated energy transfer to tissue of the patient that may include a resistive heat loss from the rechargeable power source and/or electromagnetic energy transfer directly to tissue. Based on the estimated energy transfer, the external charging device may select a power level for charging of the rechargeable power source. In one example, the charging device may select a high power level when the estimated energy transfer has not exceeded an energy transfer threshold and select a low power level when the estimated energy transfer has exceeded the energy transfer threshold.

    MANAGING RECHARGE POWER FOR IMPLANTABLE MEDICAL DEVICES

    公开(公告)号:US20180043167A1

    公开(公告)日:2018-02-15

    申请号:US15560950

    申请日:2016-04-22

    CPC classification number: A61N1/3787 H02J7/025 H02J7/027 H02J7/047

    Abstract: Devices, systems, and techniques for estimating energy transfer to tissue of a patient during battery charging for an implantable medical device are disclosed. Implantable medical devices may include a rechargeable power source that can be transcutaneously charged. An external charging device may calculate an estimated energy transfer to tissue of the patient that may include a resistive heat loss from the rechargeable power source and/or electromagnetic energy transfer directly to tissue. Based on the estimated energy transfer, the external charging device may select a power level for charging of the rechargeable power source. In one example, the charging device may select a high power level when the estimated energy transfer has not exceeded an energy transfer threshold and select a low power level when the estimated energy transfer has exceeded the energy transfer threshold.

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