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    • 3. 发明申请
    • CLOSED LOOP LONG RANGE RECHARGING
    • 关闭环路长期收紧
    • US20090112291A1
    • 2009-04-30
    • US12256811
    • 2008-10-23
    • Carl D. WahlstrandJohn E. KastTimothy J. DenisonJohn J. GreviousTodd A. Kallmyer
    • Carl D. WahlstrandJohn E. KastTimothy J. DenisonJohn J. GreviousTodd A. Kallmyer
    • A61N1/02
    • A61N1/3787
    • A charging system for an implantable medical device having a secondary coil. The charging system includes an external power source having at least one primary coil, a modulation, circuit operatively coupled to the primary coil and capable of driving it in a manner characterized by a charging parameter, and a sensor in communication with the modulation circuit and capable of sensing a condition indicating a need to adjust the charging parameter during a charging process. The parameter may be varied so that data sensed by the sensor meets a threshold requirement, which may be based on a patient preference, a government regulation, a recommendation promulgated by a health authority and/or a requirement associated with another device carried by the patient. In one embodiment, the regulation dictates maximum magnetic field exposure, and a field limiting circuit is employed to adjust the charging process.
    • 一种具有次级线圈的可植入医疗装置的充电系统。 充电系统包括外部电源,该外部电源具有至少一个初级线圈,可操作地耦合到初级线圈并且能够以特征在于充电参数的方式驱动它的调制电路,以及与调制电路通信并具有能力的传感器 感测在充电过程中指示需要调整充电参数的条件。 该参数可以变化,使得由传感器感测的数据满足阈值要求,其可以基于患者偏好,政府法规,卫生当局颁布的建议和/或与患者携带的另一装置相关联的要求 。 在一个实施例中,调节规定了最大磁场曝光,并且采用场限制电路来调节充电过程。
    • 10. 发明授权
    • Method and apparatus for altering the Q of an implantable medical device
telemetry antenna
    • 用于改变植入式医疗装置遥测天线的Q的方法和装置
    • US5766232A
    • 1998-06-16
    • US813963
    • 1997-03-03
    • John J. GreviousAnne J. C. J. van LeeuwenMark W. SandbergKenneth L. Graves
    • John J. GreviousAnne J. C. J. van LeeuwenMark W. SandbergKenneth L. Graves
    • A61N1/08A61N1/372
    • A61N1/37223A61N1/08
    • A method and apparatus for programming implantable medical devices employing RF telemetry, and more particularly, altering the RF telemetry antenna Q to accommodate telemetry with implantable medical devices having differing RF telemetry receiving characteristics is disclosed. The RF head telemetry antenna comprises an LC tank circuit including an RF head telemetry coil and a tuning capacitor and has a predetermined antenna Q. The RF head telemetry antenna is adapted to be driven into oscillation by applied oscillating energy and to continue to oscillate in a series of declining amplitude oscillations after the oscillating energy is no longer applied as residually stored oscillating energy is dissipated therethrough. A transmit telemetry pulse is generated for establishing a pulse width of the telemetry RF pulse. Upon the termination of the telemetry transmit pulse antenna Q is reduced from the predetermined antenna Q, and the declining amplitude oscillations are thereby attenuated. The reduction of the antenna Q is effected by a grounding a sense coil located in the programmer RF head that is employed to sense the RF pulse and regulate the amplitude thereof during the transmit telemetry pulse at the termination of the transmit telemetry pulse.
    • 公开了一种使用RF遥测编程可植入医疗设备的方法和装置,更具体地说,改变了RF遥测天线Q以适应具有不同RF遥测接收特性的可植入医疗设备的遥测。 RF头遥测天线包括一个包括RF头遥测线圈和调谐电容器的LC电路,具有预定的天线Q.RF头遥测天线适于通过施加的振荡能量被驱动到振荡中,并且继续以 振荡能量不再施加的一系列下降的振幅振荡作为剩余的储存振荡能量消散。 产生用于建立遥测RF脉冲的脉冲宽度的发射遥测脉冲。 遥测结束时,从预定天线Q减少发射脉冲天线Q,从而衰减幅度振荡衰减。 天线Q的减小通过接地位于编程器RF头中的感测线圈来实现,该感测线圈用于在发射遥测脉冲终止期间在发射遥测脉冲期间感测RF脉冲并调节其幅度。