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    • 9. 发明申请
    • Implantable physiologic monitoring system
    • 植入式生理监测系统
    • US20070088214A1
    • 2007-04-19
    • US11250928
    • 2005-10-14
    • Allan ShurosRodney SaloMichael Kane
    • Allan ShurosRodney SaloMichael Kane
    • A61B8/00
    • A61B8/065A61B5/076A61B5/1076A61B5/6876A61B5/6884A61B8/02A61B8/06A61B8/12A61B8/4483
    • An ultrasonic implantable device includes an ultrasonic sensor having a plurality of transducers. The sensor is configured for mounting to a vessel wall. A first of the transducers directs sound waves in a direction at least partially upstream or downstream in the vessel. A second of the transducers directs sound waves in a radial direction through an interior of the vessel against a sidewall of the vessel. The sensor monitors a change in frequency of the sound waves from the first transducer to determine a fluid velocity in the vessel. The sensor also monitors a reflection time of the sound waves from the second transducer that return from the sidewall to determine an internal diameter of the vessel. The determined fluid velocity and vessel diameter can be used to determine a volumetric flow rate of the fluid in the vessel.
    • 超声波可植入装置包括具有多个换能器的超声波传感器。 传感器被配置为安装到血管壁。 换能器中的第一个将声波沿至少部分在容器的上游或下游的方向引导。 传感器中的第二个将声波沿径向引导通过容器的内部抵靠容器的侧壁。 传感器监测来自第一换能器的声波的频率变化以确定容器中的流体速度。 传感器还监测来自第二换能器的声波的反射时间,其从侧壁返回以确定容器的内径。 确定的流体速度和容器直径可用于确定容器中流体的体积流量。