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    Antenna systems for implantable medical device telemetry
    43.
    发明授权
    Antenna systems for implantable medical device telemetry 有权
    用于植入式医疗设备遥测的天线系统

    公开(公告)号：US07072718B2

    公开(公告)日：2006-07-04

    申请号：US10309337

    申请日：2002-12-03

    申请人： Jeffrey A. Von Arx ,  Prashant Rawat ,  William R. Mass

    发明人： Jeffrey A. Von Arx ,  Prashant Rawat ,  William R. Mass

    IPC分类号： A61N1/37

    CPC分类号： A61N1/37229

    摘要： An implantable medical device system includes an implanted device communicating with an external device via telemetry. The implanted device and the external device each have a telemetry module connected to an antenna system to support a radio-frequency (RF) telemetry link. The antenna system of the external device has a manually or automatically controllable directionality. The controllable directionality is achieved, for example, by using two or more directional antennas, one non-directional antenna and one or more directional antennas, or an electronically steerable phased-array directional antenna.

    摘要翻译： 植入式医疗装置系统包括通过遥测与外部装置通信的植入装置。 植入装置和外部装置各自具有连接到天线系统的遥测模块以支持射频（RF）遥测链路。 外部设备的天线系统具有手动或自动控制的方向性。 可控制的方向性例如通过使用两个或更多个定向天线，一个非定向天线和一个或多个定向天线或电子导向相控阵定向天线来实现。

    High frequency oscillator for implantable medical devices
    47.
    发明授权
    High frequency oscillator for implantable medical devices 有权
    用于植入式医疗设备的高频振荡器

    公开(公告)号：US06453196B1

    公开(公告)日：2002-09-17

    申请号：US09633549

    申请日：2000-08-07

    申请人： Jeffrey A. Von Arx ,  Ron A. Balczewski

    发明人： Jeffrey A. Von Arx ,  Ron A. Balczewski

    IPC分类号： A61N100

    CPC分类号： A61N1/362 ,  A61N1/3956

    摘要： A timing circuit especially designed for use in implantable medical devices provides both a low frequency clock and a high frequency clock. The low frequency clock and high frequency clock are compared each time the oscillator producing the high frequency clock is enabled and the result of the comparison is used to retrim the high frequency oscillator to maintain a stable output frequency, even when subjected to drift. Additional circuitry is provided for signaling an oscillator fault in the event that an error signal resulting from the comparison of the low frequency clock with the high frequency clock exceeds a predetermined limit value. Digital trim values are stored for fast and controlled oscillator start-up.

    摘要翻译： 特别设计用于可植入医疗器械的定时电路既提供低频时钟又提供高频时钟。 在每次产生高频时钟的振荡器被使能时，比较低频时钟和高频时钟，并且即使经受漂移，比较结果也用于对高频振荡器进行重新校准以保持稳定的输出频率。 在由低频时钟与高频时钟的比较产生的误差信号超过预定极限值的情况下，提供附加电路用于发信号通知振荡器故障。 存储数字微调值用于快速和受控的振荡器启动。

    MRI operation modes for implantable medical devices
    50.
    发明授权
    MRI operation modes for implantable medical devices 有权
    可植入医疗器械的MRI操作模式

    公开(公告)号：US08543207B2

    公开(公告)日：2013-09-24

    申请号：US13178571

    申请日：2011-07-08

    申请人： Daniel J. Cooke ,  Jeffrey A. Von Arx

    发明人： Daniel J. Cooke ,  Jeffrey A. Von Arx

    IPC分类号： A61N1/37

    CPC分类号： A61N1/3718 ,  A61N1/02 ,  A61N1/36092 ,  A61N1/3688 ,  A61N1/3931 ,  A61N1/3962 ,  Y10S128/901

    摘要： One embodiment of the present invention relates to an implantable medical device (“IMD”) that can be programmed from one operational mode to another operational mode when in the presence of electro-magnetic interference (“EMI”). In accordance with this particular embodiment, the IMD includes a communication interface for receiving communication signals from an external device, such as a command to switch the IMD from a first operation mode to a second operation mode. The IMD further includes a processor in electrical communication with the communication interface, which is operable to switch or reprogram the IMD from the first operation mode to the second operation mode upon receiving a command to do so. In addition, the IMD includes a timer operable to measure a time period from when the processor switches the IMD to the second operation mode. In accordance with this aspect of the invention, the processor is in electrical communication with the timer, and is further operable to switch the IMD from the second operation mode back to the first operation mode when the measured time period reaches a predetermined time period.

    摘要翻译： 本发明的一个实施例涉及当存在电磁干扰（“EMI”）时可从一个操作模式编程到另一个操作模式的可植入医疗装置（“IMD”）。 根据该特定实施例，IMD包括用于从外部设备接收通信信号的通信接口，诸如将IMD从第一操作模式切换到第二操作模式的命令。 IMD还包括与通信接口电通信的处理器，其可操作以在接收到这样做的命令时将IMD从第一操作模式切换或重新编程到第二操作模式。 另外，IMD包括一个定时器，可操作以测量从处理器将IMD切换到第二操作模式的时间段。 根据本发明的这个方面，处理器与定时器电通信，并且当测量的时间段达到预定的时间周期时，进一步可操作地将IMD从第二操作模式切换回第一操作模式。