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    • 14. 发明申请
    • Optical MRI catheter system
    • 光学MRI导管系统
    • US20050197563A1
    • 2005-09-08
    • US11119677
    • 2005-05-02
    • Jeffrey HelferStuart MacDonaldRobert GrayChristopher Thomas
    • Jeffrey HelferStuart MacDonaldRobert GrayChristopher Thomas
    • A61B5/055A61M25/095G01R33/28A61B5/05
    • A61B5/055G01R33/285G01R33/34084G01R33/3692
    • An assembly for delivering optical signals comprising a nuclear magnetic resonance system comprised of magnets, an NMR programmable logic unit, a signal input channel, and a command output channel; an optical interface assembly electrically connected to the nuclear magnetic resonance system, the optical interface assembly comprising a first laser modulated so as to produce laser optical signals, an interface optical to electrical signal convertor; and a catheter assembly connected to said optical interface assembly, the catheter assembly comprising a proximal end, a distal end, a fiber optic cable assembly, an electronics assembly disposed at the distal end comprised of a catheter electrical to optical signal convertor and a catheter optical to electrical signal convertor, and a first receiving coil disposed at the distal end.
    • 一种用于传送光信号的组件,包括由磁体组成的核磁共振系统,NMR可编程逻辑单元,信号输入通道和命令输出通道; 光学接口组件,其电连接到所述核磁共振系统,所述光学接口组件包括被调制以产生激光光信号的第一激光器,光信号到电信号转换器的接口; 以及连接到所述光学接口组件的导管组件,所述导管组件包括近端,远端,光纤电缆组件,设置在远端处的电子组件,所述电子组件包括电导向光信号转换器的导管和导管光学 到电信号转换器,以及设置在远端的第一接收线圈。
    • 18. 发明授权
    • Fast-risetime magnetically coupled current injector and methods for
using same
    • 快速上升磁耦合电流注入器及其使用方法
    • US5452222A
    • 1995-09-19
    • US924554
    • 1992-08-05
    • Robert GrayLeedy AmbroseDiane C. Jentilet
    • Robert GrayLeedy AmbroseDiane C. Jentilet
    • G01R31/00G09B23/18G09B23/00
    • G09B23/183G01R31/001
    • An electromagnetic test system induces large current pulses in a component of a system under test. The pulse waveform may be selectively varied, and possible waveforms include square wave pulse, double exponential, and damped sinusoid waveforms. In a preferred embodiment, these waveforms are generated by simultaneously triggering a plurality of modular signal injector units having ferrite cores hinged to permit positioning of a system component under test (such as a cable or antenna) along their central axes without disturbing connections of the tested component within its system. The injector units are resonance tuned to induce a particular signal in the component under test when triggered, and the modular construction of the system permits selective connection of different injector units to provide different desired total induced signals.
    • 电磁测试系统在被测系统的一个部件中引起大电流脉冲。 可以选择性地改变脉冲波形,并且可能的波形包括方波脉冲,双指数和阻尼正弦波形。 在优选实施例中,这些波形是通过同时触发多个具有铁氧体磁芯的模块化信号注射器单元来产生的,所述模块化信号注射器单元铰接成允许沿着其中心轴定位待测系统组件(例如电缆或天线),而不干扰所测试的连接 其系统内的组件。 喷射器单元被谐振调谐以在触发时在待测部件中感应特定信号,并且系统的模块化构造允许不同喷射器单元的选择性连接以提供不同的期望的总感应信号。