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1. 发明授权

US06442420B1 Apparatus and method for measuring cardiac vagal tone 失效
标题翻译：用于测量心脏迷走神经张力的装置和方法
公开(公告)号：US06442420B1
公开(公告)日：2002-08-27
申请号：US09308609
申请日：2000-07-12
申请人： Peter Oketa-Onyut Julu , Christopher John Little
发明人： Peter Oketa-Onyut Julu , Christopher John Little
IPC分类号： A61B504
CPC分类号： A61B5/4035 , A61B5/0472 , A61B5/4052 , A61B5/415 , A61B5/417 , A61B5/7242
摘要： Apparatus for measuring a vagal tone has a detector that detects a QRS waveform of an ECG signal and generates a pulse signal that is integrated by an integrator. The integrator output is passed, in parallel, to a high pass filter and a low pass filter. The filter outputs are passed to respective voltage controlled oscillators (VCOs). The outputs of the VCOs are combined in a phase comparator that generates an output pulse train with the pulse period being proportional to the phase differences of the input signals. The phase comparator output signal is integrated and combined with a DC signal to remove any offset for constant heart rate. The combined signal is applied to a vagal tone gauge, which connects the output into a standard linear vagal tone scale.
摘要翻译：用于测量迷走神经张力的装置具有检测器，其检测ECG信号的QRS波形并产生由积分器积分的脉冲信号。积分器输出并行传递到高通滤波器和低通滤波器。滤波器输出传递到相应的压控振荡器（VCO）。 VCO的输出组合在相位比较器中，该相位比较器产生脉冲周期与输入信号的相位差正比的输出脉冲串。相位比较器输出信号被积分并与直流信号组合以去除恒定心率的任何偏移。组合的信号被应用于迷走神经张力计，其将输出连接成标准的线性迷走神经张量。

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