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    • 7. 发明授权
    • Gas analyzer apparatus
    • 气体分析仪
    • US4898465A
    • 1990-02-06
    • US302919
    • 1989-01-30
    • A. Gerrit CrawfordDouglas C. Morrison
    • A. Gerrit CrawfordDouglas C. Morrison
    • G01N21/69
    • G01N21/69
    • A cold-cathode gas discharge device is coupled between a gas sample inlet and a high vacuum and includes spaced-apart electrodes which, when coupled across a high voltage DC power supply, causes a glow-discharge to be set up within the device with the intensity of the emitted light being proportional to the percentage of a given gas contained within a gas mixture introduced through the sampling inlet. In accordance with the present invention, the glow-discharge device contains a tubular pathway which is bent at a point intermediate the spaced electrodes so that they are not co-linear along the tubular path. A photodetector is sighted coaxially with the downstream leg of the bent pathway and, as such, senses the light emitted in a longitudinal direction rather than in a transverse direction. As such, errors due to fogging of the pathway over time by electrode material or the like and movement of the cathode dark-spaced and Faraday dark-space within the tube do not alter the measurable radiation.
    • 冷阴极气体放电装置耦合在气体样品入口和高真空之间,并且包括间隔开的电极,当跨高压DC电源耦合时,使得在装置内设置辉光放电 发射光的强度与包含在通过采样入口引入的气体混合物中的给定气体的百分比成比例。 根据本发明,辉光放电装置包含管状通道,该管状通道在间隔开的电极之间的点处弯曲,使得它们沿着管状路径不是共线的。 光电检测器与弯曲通道的下游腿同轴地被看到,因此,感测沿纵向方向而不是沿横向方向发射的光。 因此,由于通过电极材料等随时间的路径的雾化以及管内的阴极暗间隔和法拉第暗空间的移动而导致的误差不会改变可测量的辐射。
    • 8. 发明授权
    • Programmable multi-mode cardiac pacemaker
    • 可编程多模心脏起搏器
    • US4562841A
    • 1986-01-07
    • US405711
    • 1982-08-05
    • Brian P. BrockwayRobert D. DreherDaniel E. HuntworkBrock S. LindstedtDouglas C. MorrisonPerry A. Mills
    • Brian P. BrockwayRobert D. DreherDaniel E. HuntworkBrock S. LindstedtDouglas C. MorrisonPerry A. Mills
    • A61N1/362A61N1/368A61N1/372A61N1/36
    • A61N1/37252A61N1/3622A61N1/368A61N1/3688A61N1/37223
    • A programmable cardiac pacemaker that is selectively programmable via a radio frequency communications link into one of a plurality of a single and dual chamber pacing modes. Depending upon the mode selected, an associated plurality of pacing parameters may be programmed, each within a predetermined range of possible magnitudes.The pacemaker includes a rate smoothing function for preventing the rate interval from changing by more than a predetermined percentage on a cycle-to-cycle basis; and a graceful degradation function for causing the ventricular pacing rate to decay when the atrial rate exceeds a programmed upper rate limit for a predetermined length of time. A graceful degration onset time and rate of decay are also programmable. Additionally, the pacemaker contains a set of pre-programmed alternative pacing parameters for at least one mode and which can be independently reverted to.The pacemaker control circuitry is organized about a central bus into an I/O controller and a pacing controller. Pacing control is continuous and its I/O communications operate on a prioritized basis. I/O control permits the programming of any register and the interrogation of a variety of analog parameters associated therewith.
    • 一种可编程的心脏起搏器,其可经由射频通信链路选择性地编程为多个单室起搏模式和双室起搏模式之一。 根据所选择的模式,相关联的多个起搏参数可以被编程,每个在可能的幅度的预定范围内。 起搏器包括速率平滑功能,用于在循环到循环的基础上防止速率间隔改变超过预定百分比; 以及当心房速率超过编程的上限速度达预定时间长度时,使心室起搏速率衰减的优雅降解功能。 优雅的降级开始时间和衰减速率也是可编程的。 此外,起搏器包含一组用于至少一种模式的预先编程的替代起搏参数,并且可以独立地还原。 将起搏器控制电路组织为一个中央总线到I / O控制器和起搏控制器中。 起搏控制是连续的,其I / O通信以优先级为基础进行操作。 I / O控制允许编程任何寄存器和询问与之相关的各种模拟参数。