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    • 1. 发明申请
    • Techniques for Sensing and Adjusting a Compliance Voltage in an Implantable Stimulator Device
    • 用于感测和调整可植入刺激器装置中的合规电压的技术
    • US20120197354A1
    • 2012-08-02
    • US13446784
    • 2012-04-13
    • Jess Weigian ShiYuping HeQue T. DoanDavid K.L. Peterson
    • Jess Weigian ShiYuping HeQue T. DoanDavid K.L. Peterson
    • A61N1/36
    • A61N1/36125A61N1/36071A61N1/37
    • Disclosed herein are methods and circuitry for monitoring and adjusting a compliance voltage in an implantable stimulator devices to an optimal value that is sufficiently high to allow for proper circuit performance (i.e., sufficient current output), but low enough that power is not needlessly wasted via excessive voltage drops across the current output circuitry. The algorithm measures output voltages across the current source and sink circuitry during at least periods of actual stimulation when both the current sources and sinks are operable, and adjusts the compliance voltage so as to reduce these output voltages to within guard band values preferably indicative for operation in transistor saturation. The output voltages can additionally be monitored during periods between stimulation pulses to improve the accuracy of the measurement, and is further beneficial in that such additional measurements are not perceptible to the patient.
    • 本文公开了用于监测和调整可植入式刺激器装置中的顺应性电压的方法和电路,以达到足够高以允许适当的电路性能(即,足够的电流输出)的最佳值,但是足够低以使得功率不会被无用地浪费通过 电流输出电路上的电压过大。 当电流源和接收器都可操作时,该算法在至少实际刺激期间测量电流源和接收电路两端的输出电压,并且调整顺从电压,以便将这些输出电压降低到优选地指示操作的保护带值内 晶体管饱和。 在刺激脉冲之间的周期期间可以另外监视输出电压,以提高测量的准确度,并且进一步有益的是,这种附加测量对于患者是不可察觉的。
    • 3. 发明申请
    • Current Generation Architecture for an Implantable Stimulator Device Having Coarse and Fine Current Control
    • 具有粗细电流控制的植入式刺激器装置的当前一代架构
    • US20100286749A1
    • 2010-11-11
    • US12838260
    • 2010-07-16
    • Jordi ParramonDavid K.L. PetersonPaul J. Griffith
    • Jordi ParramonDavid K.L. PetersonPaul J. Griffith
    • A61N1/36
    • A61N1/36125A61N1/0531A61N1/0534A61N1/0541A61N1/0543A61N1/0551A61N1/36071
    • Disclosed herein is a current generation architecture for an implantable stimulator device such as an Implantable Pulse Generator (IPG). Current source and sink circuitry are both divided into coarse and fine portions, which respectively can provide a coarse and fine current resolution to a specified electrode on the IPG. The coarse portion is distributed across all of the electrodes and so can source or sink current to any of the electrodes. The coarse portion is divided into a plurality of stages, each of which is capable via an associated switch bank of sourcing or sinking a coarse amount of current to or from any one of the electrodes on the device. The fine portion of the current generation circuit preferably includes source and sink circuitry dedicated to each of the electrode on the device, which can comprise digital-to-analog current converters (DACs). The DACs also receives the above-noted reference current, which is amplified by the DACs in fine increments by appropriate selection of fine current control signals. When the coarse and fine current control circuitry are used in tandem, ample current with a fine current resolution can be achieved at any electrode and in a space- and power-efficient manner.
    • 本文公开了用于植入式脉冲发生器(IPG)的植入式刺激器装置的当前一代架构。 电流源和接收电路都分为粗细部分,分别可以为IPG上的指定电极提供粗细和精细的电流分辨率。 粗糙部分分布在所有电极上,因此可以将电流吸收或吸收到任何电极。 粗略部分被分成多个级,每个级能够经由相关联的开关组,该器件对设备上的任何一个电极进行粗电流的吸收或吸收。 电流产生电路的优良部分优选地包括专用于器件上每个电极的源极和漏极电路,其可以包括数模转换器(DAC)。 DAC还接收上述参考电流,其通过适当选择精细电流控制信号以细微增量由DAC放大。 当粗调和精细电流控制电路串联使用时,可以在任何电极上以空间和功率有效的方式实现具有精细电流分辨率的充足电流。