脉搏波的无创检测方式

脉搏波的波形特征与心血管疾病密切相关,其检测方式和传感器的选择都会对脉搏波的检测结果产生重大影响。目前脉搏波无创检测用传感器类型包括压力传感器、压电传感器和光电传感器(反射式和透射式)。检测方式有桡动脉压力脉搏波检测和指端容积脉搏波检测。实际运用结果显示不同的传感器有不同的性能指标和适应范围,检测方式也会对脉搏波的检测产生很大影响。尽管压电传感器和光电传感器都能采集信号良好的脉搏波,但压力传感器由于误差大、强噪声和检测部位难寻等原因已经逐渐被淘汰,此外临床实验证实了桡动脉压力脉搏波检测容易受检测部位和检测个体的影响,指端容积脉搏波具有检测稳定、重复性好、易于操作等优点。

Methods of Non-Invasive Pulse Wave Detecting

Pulse wave characteristics are closely related to cardiovascular disease, and the choices of detection method and sensor even have significant impacts on the test results. There are three types of sensors for detecting non-invasively pulse wave, pressure sensors, piezoelectric sensors and photoelectric sensors （reflection type and transmission type）. The pulse wave signals are usually obtained by radial artery pressure pulse waves or finger tip volume pulse waves. The practical application proves every kind of sensor has a certain performance indicators and adaptability area, and testing approach also impacts on the wave signals. Although both piezoelectric sensors and photoelectric sensors can capture these waves with good wave signals, the pressure sensors are gradually being eliminated due to some disadvantages such as large errors , strong noise and sensol ldcation limited. In addition, clinical trials also confirm that the radialis arteriae pressure waves are vulnerable to sensor location and testing individual, and the finger tip volume pulse waves are easily caught with stability and reproducibity.