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    • 6. 发明授权
    • Non-invasive method and device for measuring cardiac output
    • 用于测量心输出量的非侵入性方法和装置
    • US08721559B2
    • 2014-05-13
    • US12348842
    • 2009-01-05
    • Stephen C. PetersonTomasz J. PetelenzStephen C. Jacobsen
    • Stephen C. PetersonTomasz J. PetelenzStephen C. Jacobsen
    • A61B5/02A61B5/05
    • A61B5/05A61B5/02028A61B5/029A61B5/0507
    • A system comprising a housing containing a signal generator coupled to an antenna and a dielectric material disposed about the antenna. The device is adapted to generate and direct a plurality of signals towards the heart of the person and measure a magnitude of a signal returned from the heart. The device further comprises a processor to compare differences between a magnitude of a signal propagated and the magnitude of the signal returned off the heart and determine a signal frequency having a maximum return loss value based on those differences. The processor also estimates a change in the amplitude of motion of a portion of a wall of the heart based on the differences between the magnitude of the signal propagated by the device and the magnitude of the signal returned off of the portion of the heart.
    • 一种系统,包括壳体,其容纳耦合到天线的信号发生器和围绕天线设置的电介质材料。 该装置适于产生并引导人的心脏的多个信号并且测量从心脏返回的信号的幅度。 该装置还包括处理器,用于比较传播的信号的幅度与从心脏返回的信号的大小之间的差异,并基于这些差异确定具有最大回波损耗值的信号频率。 处理器还基于由器件传播的信号的幅度与从心脏部分返回的信号的大小之间的差异来估计心脏壁的一部分的运动幅度的变化。
    • 8. 发明授权
    • Micro motor
    • 微电机
    • US08558489B2
    • 2013-10-15
    • US12959159
    • 2010-12-02
    • Stephen C. JacobsenShane OlsenMarc X. Olivier
    • Stephen C. JacobsenShane OlsenMarc X. Olivier
    • H02P6/00
    • H02K16/00H02K1/14H02K3/47H02K7/083H02K21/14H02K29/08
    • A thinly configured and brushless miniature DC micro motor that includes at least two substantially-flat motor cells that are aligned axially. Each motor cell comprises a stator coil having an elongate opening and passage for a rotor shaft, and a cross-polarized rotor magnet carried on the rotor shaft and received within the elongate opening. The micro motor also includes a frame substrate that fixably supports the stator coils of the motor cells while providing a bearing means for rotatably supporting the rotor shaft, so that selectively energizing one of the motor cells creates an electric current in the stator coil interacting with a magnetic field of the received rotor magnet to generate a torque between the rotor shaft and the frame substrate.
    • 一种薄配置和无刷的微型DC微型电动机,其包括轴向对准的至少两个基本上平坦的电动机单元。 每个电动机单元包括具有用于转子轴的细长开口和通道的定子线圈和承载在转子轴上并被接收在细长开口内的交叉极化转子磁体。 微型马达还包括框架基板,该框架基板可固定地支撑电动机单元的定子线圈,同时提供用于可旋转地支撑转子轴的支承装置,从而选择性地激励电动机单元之一产生与定子线圈相互作用的电流 接收的转子磁体的磁场,以在转子轴和框架基板之间产生转矩。