Design and initial evaluation of an implantable sonomicrometer and CW Doppler flowmeter for simultaneous recordings with a multichannel telemetry system.
Design and initial evaluation of an implantable sonomicrometer and CW Doppler flowmeter for simultaneous recordings with a multichannel telemetry system.
复制标题
设计和初步评估植入式声测微计和连续波多普勒流量计，用于通过多通道遥测系统进行同步记录。
DOI：
10.1109/tbme.2005.847560
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发表时间：
2005
期刊：
影响因子：
--
通讯作者：
Smith,WilliamM
中科院分区：
文献类型：
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作者：
Kong,Wei;Rollins,DennisL;Ideker,RaymondE;Smith,WilliamM
我们开发了一种用于多通道遥测系统的声微米和连续波长（CW）多普勒流量计。这些进展将使我们能够测量心室尺寸和冠状动脉血流速度，这是表征室性心律失常动态动物模型中心源性猝死（SCD）的有价值参数。传感器的设计目标是精确、低功耗、小尺寸和相互兼容。电路设计成功，并在体内进行了同步测试。连续波多普勒流量计绘制9毫安，声压计绘制28毫安在5伏电源。测量心脏尺寸和血流速度的能力将大大增加我们对导致自发性心源性猝死的一系列事件的理解。
We have developed a sonomicrometer and continuous wavelength (CW) Doppler flowmeter for a multichannel telemetry system. These developments will enable us to measure ventricular dimension and coronary artery blood velocity, which are valuable parameters to characterize sudden cardiac death (SCD) in ambulatory animal models of ventricular arrhythmias. The design goals for the sensors were accuracy, low power consumption, small size and compatibility with each other. The circuits were designed successfully and tested simultaneously in vivo. The CW Doppler flowmeter draws 9 mA and the sonomicrometer draws 28 mA on a 5-V supply. The ability to measure heart dimension and blood velocity will add significantly to our understanding of the sequence of events leading up to spontaneous sudden cardiac death.