基于脉搏波的新型血压与血管硬度测量仪的研制

Designing a New Kind of Blood Pressure and Artery Stiffness Measuring Instrument Based on Pulse Wave

目的:根据脉搏波理论研制出一种新型血压与血管硬度测量仪。方法:利用示波法原理在波形特征法和幅度系数法的基础上提出一种系数差分比值法来间接测量血压的新方法,通过采集肱动脉和桡动脉两处波形,获得了脉搏波传播速度(PWV)、动脉顺应性(C1、C2)和动脉硬化指数(ASI)三个反映受试者动脉弹性的参数指标。结果:通过大量病例分析和临床测试证实了算法的有效性和可靠性,而且此算法已经应用LabVIEW开发成软件并在医院进行临床应用。结论:血压与血管硬度检测仪能判断心血管病患者与正常人的差异性,对我国心血管病方面流行病学的调查、疾病预防、疾病早期发现都具有很大的意义。

Objective： A new kind of blood pressure and artery stiffness measuring instrument is designed on the basis of pulse wave. Method： A new method of blood pressure measurement is presented by oscillometric based on feature point method and amplitude characteristic ratios method. PWV, C1, C2 and ASI which can show artery elasticity state can be calculated by brachial pulse wave and radial pulse wave. Result： The algorithms prove effective and reliable though analyses of many cases and lots of clinical tests, which have been applied to the development of Lab-VIEW-based software for clinical use. Conclusion： Blood pressure and artery stiffness measuring instrument can detect difference between cardiovascular patients and normal persons, it provides a convenient method for researching, preventing and epidemiological studies of cardiovascular diseases in our country.