Simultaneous physiological sensing and stimulation with saturation detection

    公开(公告)号:US11511115B2

    公开(公告)日:2022-11-29

    申请号:US16110439

    申请日:2018-08-23

    申请人: Medtronic, Inc.

    摘要: Systems and method may be used for interfacing with a patient. Systems may include a plurality of electrodes in electrical communication with a processor. The processor may be configured to receive sense signals from electrodes and to determine the reliability of the received signal. A test tone signal comprising a test tone frequency may be applied, and the magnitude of the test tone frequency may be analyzed in the received signal. If it is determined that the magnitude of the test tone frequency is below a threshold, the system may take action, such as lowering the gain on an amplifier. Stimulation signals may be applied to the patient at a stimulation frequency simultaneously with one or both of receiving sense signals and providing the test tone signal.

    DORSAL SPINAL COLUMN CHARACTERIZATION WITH EVOKED POTENTIALS

    公开(公告)号:US20220176128A1

    公开(公告)日:2022-06-09

    申请号:US17552866

    申请日:2021-12-16

    申请人: Medtronic, Inc.

    IPC分类号: A61N1/36 A61N1/05

    摘要: This disclosure relates to methods, devices, and systems for delivering and adjusting stimulation therapy. In one example, a method comprising delivering, by a stimulation electrode, electrical stimulation as a candidate therapy to a patient according to a set of candidate therapy parameters, the stimulation electrode located in proximity to the dorsal column of a patient; sensing, by a sensing electrode, an electrically evoked compound action potential (eECAP) signal in response to the delivery of the electrical stimulation; and classifying, by a processor, the sensed eECAP signal generated in response to the application of the candidate therapy relative to an eECAP baseline is disclosed.

    Devices and methods for sensing physiological signals during stimulation therapy

    公开(公告)号:US11103172B2

    公开(公告)日:2021-08-31

    申请号:US14064801

    申请日:2013-10-28

    申请人: Medtronic, Inc.

    摘要: Devices and methods provide for the sensing of physiological signals during stimulation therapy by preventing stimulation waveform artifacts from being passed through to the amplification of the sensed physiological signal. Thus, the amplifiers are not adversely affected by the stimulation waveform and can provide for successful sensing of physiological signals between stimulation waveform pulses. A blanking switch may be used to blank the stimulation waveform artifacts where the blanking switch is operated in a manner synchronized with the stimulation waveform so that conduction in the sensing path is blocked during the stimulation pulse as well as during other troublesome artifacts such as a peak of a recharge pulse. A limiter may be used to limit the amplitude of the sensed signal, and hence the stimulation artifacts, that are passed to the amplifier without any synchronization of the limiter to the stimulation waveform.

    ADAPTIVE DEEP BRAIN STIMULATION USING MOVEMENT DESYNCHRONIZATION

    公开(公告)号:US20210060331A1

    公开(公告)日:2021-03-04

    申请号:US17097776

    申请日:2020-11-13

    申请人: Medtronic, Inc.

    摘要: Techniques are disclosed for delivering electrical stimulation therapy to a patient. In one example, a medical system delivers electrical stimulation therapy to a tissue of the patient via electrodes. The medical system determines a first change of a first sensed signal of the patient to movement by the patient and a second change of a second sensed signal of the patient to the movement by the patient. Based on the first change and the second change, the medical system selects one of the first sensed signal and the second sensed signal of the patient for controlling the electrical stimulation therapy. The medical system adjusts a level of at least one parameter of the electrical stimulation therapy based on the selected one of the first sensed signal and the second sensed signal.

    DORSAL SPINAL COLUMN CHARACTERIZATION WITH EVOKED POTENTIALS

    公开(公告)号:US20200171312A1

    公开(公告)日:2020-06-04

    申请号:US16782986

    申请日:2020-02-05

    申请人: Medtronic, Inc.

    IPC分类号: A61N1/36 A61N1/05

    摘要: This disclosure relates to methods, devices, and systems for delivering and adjusting stimulation therapy. In one example, a method comprising delivering, by a stimulation electrode, electrical stimulation as a candidate therapy to a patient according to a set of candidate therapy parameters, the stimulation electrode located in proximity to the dorsal column of a patient; sensing, by a sensing electrode, an electrically evoked compound action potential (eECAP) signal in response to the delivery of the electrical stimulation; and classifying, by a processor, the sensed eECAP signal generated in response to the application of the candidate therapy relative to an eECAP baseline is disclosed.