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    • 8. 发明授权
    • Microprobe for monitoring biophysical phenomena associated with cardiac
and neural activity
    • 用于监测与心脏和神经活动相关的生物物理现象的微探针
    • US4344440A
    • 1982-08-17
    • US136317
    • 1980-04-01
    • Trygve AabyBarnett Rosenberg
    • Trygve AabyBarnett Rosenberg
    • A61B5/05A61B5/04
    • A61B5/0507A61B5/05A61B5/407
    • A portable microprobe uses 10 gigahertz CW microwave radiation at a power level of less than 10 milliwatts for recording of a number of biophysical phenomena associated with the cardiac and neural activity of the life system. The microprobe consists of a Gunn diode feeding power into a short, insulated dielectric waveguide, the free end of which houses a point contact semiconductor diode isolated by a metal shield from the incident beam. The wave guide concentrates and delivers a pencil shaped beam into the tissue of interest and the back-scattered radiation is modulated and detected by the diode. The detected signal is filtered, amplified and recorded to reflect on-going biological activity. The receiver electronics is housed in a small self-contained package and has its output connected through a flexible attachment to two ear tubes which enable continuous monitoring of the audio response through an electrical and audio converter indicative of the on-going biological activity. By scanning step wise across the chest, the microprobe allows localization of many details of cardiac activity. The microprobe can also be used to monitor activities of the brain and the spinal cord.
    • 便携式微探针使用10千兆赫CW微波辐射,功率水平低于10毫瓦,用于记录与生命系统的心脏和神经活动相关的许多生物物理现象。 微探针由一个耿氏二极管组成,将一个绝缘的绝缘介质波导输入一个短路绝缘介质波导,其自由端容纳一个由金属屏蔽与入射光束隔离的点接触半导体二极管。 波导集中并将铅笔形光束传送到感兴趣的组织中,并且反向散射的辐射被二极管调制和检测。 检测到的信号被过滤,扩增和记录以反映正在进行的生物活性。 接收器电子器件容纳在小的独立包装中,并且其输出通过柔性附件连接到两个耳管,其能够通过指示正在进行的生物活性的电和音频转换器连续监视音频响应。 通过逐步扫描胸部,微探针允许定位心脏活动的许多细节。 微探针还可用于监测大脑和脊髓的活动。