用于阻抗心动描记术的双通道生物阻抗监测仪。

Two-channel bioimpedance monitor for impedance cardiography.

作者信息

Vondra Vlastimil, Halamek Josef, Viscor Ivo, Jurak Pavel

机构信息

Inst. of Sci. Instrum., Acad. of Sci., of the Czech Rep., Brno, Czech Republic.

出版信息

Conf Proc IEEE Eng Med Biol Soc. 2006;2006:6061-3. doi: 10.1109/IEMBS.2006.260011.

DOI:10.1109/IEMBS.2006.260011

PMID:17945930

Abstract

In this paper we introduce our conception of a two-channel bioimpedance monitor for the impedance cardiography. We describe the design of a homemade device which is based on a direct digital synthesizer and a digital down converter. This solution enables us to obtain a high-quality bioimpedance signal, which can be used for computing the cardiac output beat per beat. It further enables us to analyze impedance phase changes beat per beat. Our device allows simultaneous measuring of complex impedance in two arbitrary directions on human/animal body without any interference between channels. The setting of the main parameters of the measurement like the amplitude and the frequency of the measurement current depends on the user.

摘要

在本文中，我们介绍了用于阻抗心动描记术的双通道生物阻抗监测仪的概念。我们描述了一种基于直接数字合成器和数字下变频器的自制设备的设计。这种解决方案使我们能够获得高质量的生物阻抗信号，可用于逐搏计算心输出量。它还使我们能够逐搏分析阻抗相位变化。我们的设备允许在人体/动物体上同时在两个任意方向测量复阻抗，且通道之间没有任何干扰。测量的主要参数设置，如测量电流的幅度和频率，取决于用户。