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    Efficient External Charger for Charging a Plurality of Implantable Medical Devices
    92.
    发明申请
    Efficient External Charger for Charging a Plurality of Implantable Medical Devices 有权
    高效的外部充电器为多种植入式医疗设备充电

    公开(公告)号：US20110121777A1

    公开(公告)日：2011-05-26

    申请号：US12624162

    申请日：2009-11-23

    申请人： Rafael Carbunaru ,  Jordi Parramon ,  Robert Ozawa ,  Jess Shi ,  Joey Chen ,  Md. Mizanur Rahman

    发明人： Rafael Carbunaru ,  Jordi Parramon ,  Robert Ozawa ,  Jess Shi ,  Joey Chen ,  Md. Mizanur Rahman

    IPC分类号： H02J7/00

    CPC分类号： A61N1/3787 ,  A61N1/37223 ,  A61N1/37288

    摘要： An improved external charger for a battery in an implantable medical device (implant), and technique for charging batteries in multiple implants using such improved external charger, is disclosed. During charging, values for a parameter measured in the implants are reported from the implants to the external charger. The external charger infers from the magnitudes of the parameters which of the implants has the highest and lowest coupling to the external charger, and so designates those implants as “hot” and “cold.” The intensity of the magnetic charging field is optimized for the cold implant consistent with the simulation to ensure that that the cold implant is charged with a maximum (fastest) battery charging current. The duty cycle of the magnetic charging field is also optimized for the hot implant consistent with the simulation to ensure that the hot implant does not exceed the power dissipation limit. As a result, charging is optimized to be fast for all of the implants, while still safe from a tissue heating perspective.

    摘要翻译： 公开了一种用于可植入医疗装置（植入物）中的电池的改进的外部充电器，以及使用这种改进的外部充电器为多个植入物中的电池充电的技术。 在充电期间，在植入物中测量的参数的值从植入物报告给外部充电器。 外部充电器从参数的大小推断出植入物中的哪一个具有与外部充电器最高和最低耦合的参数，因此将这些植入物称为“热”和“冷”。磁充电场的强度针对 冷植入物与模拟一致，以确保冷植入物充电最大（最快）的电池充电电流。 对于与模拟一致的热注入，磁充电场的占空比也被优化，以确保热植入物不超过功率耗散极限。 因此，对于所有植入物，充电被优化为快速，同时从组织加热的角度来看仍然是安全的。

    Current Generation Architecture for an Implantable Stimulator Device Having Coarse and Fine Current Control
    94.
    发明申请
    Current Generation Architecture for an Implantable Stimulator Device Having Coarse and Fine Current Control 有权
    具有粗细电流控制的植入式刺激器装置的当前一代架构

    公开(公告)号：US20100286749A1

    公开(公告)日：2010-11-11

    申请号：US12838260

    申请日：2010-07-16

    申请人： Jordi Parramon ,  David K.L. Peterson ,  Paul J. Griffith

    发明人： Jordi Parramon ,  David K.L. Peterson ,  Paul J. Griffith

    IPC分类号： A61N1/36

    CPC分类号： A61N1/36125 ,  A61N1/0531 ,  A61N1/0534 ,  A61N1/0541 ,  A61N1/0543 ,  A61N1/0551 ,  A61N1/36071

    摘要： 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.

    摘要翻译： 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。

    TRANSCEIVER FOR AN IMPLANTABLE MEDICAL DEVICE HAVING SWITCHABLE SERIES-TO-PARALLEL TANK CIRCUIT
    96.
    发明申请
    TRANSCEIVER FOR AN IMPLANTABLE MEDICAL DEVICE HAVING SWITCHABLE SERIES-TO-PARALLEL TANK CIRCUIT 有权
    具有可切换系列至平行电池电路的可植入医疗设备的收发器

    公开(公告)号：US20090281597A1

    公开(公告)日：2009-11-12

    申请号：US12117487

    申请日：2008-05-08

    申请人： JORDI PARRAMON ,  KIRAN NIMMAGADDA ,  MIZANUR RAHMAN

    发明人： JORDI PARRAMON ,  KIRAN NIMMAGADDA ,  MIZANUR RAHMAN

    IPC分类号： A61N1/00

    CPC分类号： A61N1/3727 ,  A61N1/37211

    摘要： An improved transceiver circuit particularly useful in an inductively coupled wireless communication system such as an implantable medical device system is disclosed. The improved transceiver circuit is switchable to assume a serial L-C configuration in the transmit mode and a parallel L-C configuration in the receive mode, but does not require high voltage switches. A low-drive transmitter and a high-input-impedance receiver are used, which reduces power consumption in receive mode, while still maintaining good transmitter performance.

    摘要翻译： 公开了一种在诸如可植入医疗设备系统的电感耦合无线通信系统中特别有用的改进的收发器电路。 改进的收发器电路可以在发送模式下采用串行L-C配置，并且在接收模式下可以采用并行L-C配置，但不需要高压开关。 使用低驱动发射器和高输入阻抗接收器，这降低了接收模式下的功耗，同时仍保持良好的发射机性能。

    Low Power Loss Current Digital-to-Analog Converter Used in an Implantable Pulse Generator
    97.
    发明申请
    Low Power Loss Current Digital-to-Analog Converter Used in an Implantable Pulse Generator 有权
    用于可植入脉冲发生器的低功耗电流数模转换器

    公开(公告)号：US20090204174A1

    公开(公告)日：2009-08-13

    申请号：US12424916

    申请日：2009-04-16

    申请人： Jordi Parramon ,  Yuping He ,  Kiran Nimmagadda

    发明人： Jordi Parramon ,  Yuping He ,  Kiran Nimmagadda

    IPC分类号： A61N1/36

    CPC分类号： A61N1/36071 ,  A61N1/025 ,  A61N1/36125 ,  A61N1/378

    摘要： In one embodiment, the present invention provides an implantable stimulation device that includes output current sources and/or sinks configured to provide an output current for a load (i.e., tissue). The output path of the output current source or sink comprises a transistor which operates in a linear mode instead of a saturation mode. Because operation in a linear mode results in smaller drain-to-source voltage drops, power consumption in the output current source or sink (and hence in the implantable stimulator) is reduced, reducing battery or other power source requirements. Operation in the linear mode is facilitated in useful embodiments by a load in an input path (into which a reference current is sent) and a load in the output path (which bears the output current). The loads can be active transistors or passive resistors. A feedback circuit (e.g., an operational amplifier) receives voltages that build up across these loads, and sends a control signal to the gate of the transistor to ensure its linear operation.

    摘要翻译： 在一个实施例中，本发明提供了一种植入式刺激装置，其包括被配置为提供负载（即组织）的输出电流的输出电流源和/或接收器。 输出电流源或吸收器的输出路径包括以线性模式而不是饱和模式操作的晶体管。 因为在线性模式下的操作会导致较小的漏极 - 源极电压降，所以输出电流源或接收器（以及因此在可植入的刺激器中）的功耗降低，从而减少电池或其他电源要求。 在有用的实施例中，通过输入路径（发送参考电流）中的负载和输出路径（承担输出电流）中的负载来促进线性模式的操作。 负载可以是有源晶体管或无源电阻。 反馈电路（例如，运算放大器）接收跨越这些负载的电压，并将控制信号发送到晶体管的栅极，以确保其线性运行。

    TELEMETRY LISTENING WINDOW MANAGEMENT FOR AN IMPLANTABLE MEDICAL DEVICE
    98.
    发明申请
    TELEMETRY LISTENING WINDOW MANAGEMENT FOR AN IMPLANTABLE MEDICAL DEVICE 有权
    远程医疗窗口管理用于可植入医疗设备

    公开(公告)号：US20090018618A1

    公开(公告)日：2009-01-15

    申请号：US11776170

    申请日：2007-07-11

    申请人： Jordi Parramon ,  Jess W. Shi

    发明人： Jordi Parramon ,  Jess W. Shi

    IPC分类号： A61N1/02

    CPC分类号： A61N1/37252 ,  A61N1/3605 ,  A61N1/37205 ,  Y10S128/903

    摘要： An improved arbitration scheme for allowing concurrent stimulation and telemetry listening in a microstimulator is disclosed. A listening window for telemetry is permitted to proceed, and access to the microstimulator's coil granted, during at least a portion of the inter-pulse period that follows the issuance of a stimulation pulse. This is permissible because access to the coil is not needed during the entirety of the inter-pulse period. For example, the listening window can issue during that portion of the inter-pulse period when the decoupling capacitor is discharged, but cannot issue during that portion of the inter-pulse period when the compliance voltage is being generated for the next stimulation pulse. However, because compliance voltage generation occupies only a small portion of the inter-pulse period, the technique is not substantially limited. By allowing the listening window to issue during the majority of the inter-pulse period, the listening window produces smaller gaps between the pulses, and stimulation therapy is thus brought closer to its ideal.

    摘要翻译： 公开了一种用于允许微型激励器中的并发刺激和遥测监听的改进的仲裁方案。 在发出刺激脉冲之后的脉冲间期间的至少一部分期间，允许遥测监听窗口继续进行微型刺激器线圈的访问。 这是允许的，因为在整个脉冲间期间不需要对线圈的访问。 例如，当解耦电容器放电时，在脉冲周期的该部分期间可以发出监听窗口，但是当为下一个刺激脉冲产生顺从性电压时，不能在脉冲间期间的那部分期间发出监听窗口。 然而，由于顺应性电压产生仅占脉冲周期的一小部分，所以该技术基本上不受限制。 通过允许在大多数脉冲间期间发出听音窗口，收听窗口在脉冲之间产生较小的间隙，因此刺激疗法更接近其理想。

    VOLTAGE CONVERTER FOR IMPLANTABLE MICROSTIMULATOR USING RF-POWERING COIL
    99.
    发明申请
    VOLTAGE CONVERTER FOR IMPLANTABLE MICROSTIMULATOR USING RF-POWERING COIL 有权
    使用RF电源线圈的可变形微电脑电压转换器

    公开(公告)号：US20080208293A1

    公开(公告)日：2008-08-28

    申请号：US12099474

    申请日：2008-04-08

    申请人： Jordi Parramon ,  Matthew I. Haller

    发明人： Jordi Parramon ,  Matthew I. Haller

    IPC分类号： A61N1/00 ,  A61N1/08

    CPC分类号： A61N1/08 ,  A61N1/37205 ,  A61N1/3787

    摘要： A combination, voltage converter circuit for use within an implantable device, such as a microstimulator, uses a coil, instead of capacitors, to provide a voltage step up and step down conversion functions. The output voltage is controlled, or adjusted, through duty-cycle modulation. In accordance with one aspect of the invention, applicable to implantable devices having an existing RF coil through which primary or charging power is provided, the existing RF coil is used in a time-multiplexing scheme to provide both the receipt of the RF signal and the voltage conversion function. This minimizes the number of components needed within the device, and thus allows the device to be packaged in a smaller housing or frees up additional space within an existing housing for other circuit components. In accordance with another aspect of the invention, the voltage up/down converter circuit is controlled by a pulse width modulation (PWM) low power control circuit. Such operation allows high efficiencies over a wide range of output voltages and current loads.

    摘要翻译： 在可植入装置（例如微型激励器）内使用的组合电压转换器电路使用线圈代替电容器来提供升压和降压转换功能。 通过占空比调制来控制或调节输出电压。 根据本发明的一个方面，可应用于具有通过其提供初级或充电功率的现有RF线圈的可植入装置，现有的RF线圈用于时间复用方案以提供RF信号的接收和 电压转换功能。 这使得器件中所需的部件的数量最小化，并因此允许将器件封装在较小的外壳中，或释放现有外壳内用于其他电路元件的额外空间。 根据本发明的另一方面，电压上/下变频器电路由脉宽调制（PWM）低功率控制电路控制。 这种操作允许在宽范围的输出电压和电流负载下实现高效率。