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    • 7. 发明申请
    • MINIATURE DISPOSABLE BLOOD FLOW MONITOR
    • 微型可调血液流量监视器
    • WO1995019734A1
    • 1995-07-27
    • PCT/US1995000790
    • 1995-01-20
    • KAGAN, AndrewSELDEN, Gerald, P.WICKSTEAD, James, C.
    • A61B05/0265
    • A61B5/021
    • A small, lightweight, disposable blood flow monitor (10) adhered directly to the skin of a patient above the vessel being monitored, such as an artery. A transducer (12) generates an electric signal representative of a deflection of a vessel wall due to pulsatile pressure, which deflection is providing a mechanical advantage for the detected deflection. Control circuitry (100) periodically stores a peak value (22) of a deflection caused by a systolic pulse. A reference value is obtained by pressing a calibrate switch (82) to store (36) a value representing a systolic pulse encountered during a calibration interval. Peak values of systolic pulses are stored at predetermined intervals and compared with the reference value. A simplified display, preferably comprised of LEDs of different colors respectively represent a normal, slightly abnormal and significantly more abnormal conditions. The monitor, once turned on, remains on throughout its useful operating life. The reference value may be selected/reselected at any time.
    • 一个小型,重量轻的一次性血液流量监测器(10)直接粘附在血管上方的患者皮肤上,例如动脉。 换能器(12)由于脉动压力而产生代表血管壁偏转的电信号,该偏转为所检测的偏转提供了机械的优点。 控制电路(100)周期性地存储由收缩期脉冲引起的偏转的峰值(22)。 通过按下校准开关(82)来存储(36)表示在校准间隔期间遇到的收缩期脉冲的值的参考值。 以预定间隔存储收缩期脉冲的峰值,并与参考值进行比较。 优选由不同颜色的LED组成的简化显示器分别表示正常的,稍微异常的和显着更多的异常状况。 显示器一旦打开,将在整个有用的使用寿命内保持。 可以随时选择/重新选择参考值。