基于波形驱动的桡动脉模拟平台设计

为同步获取研究所需的三维脉搏信息和血压波形,通过人体心血管系统循环理论和脉搏波形成机理构建以可编程控制注射泵为核心的桡动脉模拟平台。选择高斯函数模型合成多类型脉搏波编程并驱动平台,由双目视觉脉搏检测系统和压力变送器分别采集模拟桡动脉三维脉搏信息和血压波形,并通过皮尔森相关性检验平台稳定性和可重复性。实验结果表明,桡动脉模拟平台工作稳定可靠、重复性好,可在模拟桡动脉处产生多类型三维脉搏信息和血压波形。该平台结构简单、成本低,产生脉动流类型丰富,为揭示桡动脉三维脉搏信息与血管内压力变化之间的关系以及通过三维脉搏信息预测血压波形提供了一种实验研究平台。

Design of Radial Artery Simulation Platform Based on Waveform Drive

In order to obtain the three-dimensional pulse information and blood pressure waveform needed in the study,a radial artery simulation platform with programmable controlled injection pump as the core was constructed by using the circulation theory of human cardiovascular system and pulse wave formation mechanism.Gaussian function model was selected to synthesize multi-type pulse wave to program and drive the platform.The three-dimensional pulse information and blood pressure waveform of the simulated radial artery were collected by binocular visual pulse detection system and pressure transmitter respectively,and the platform stability and repeatability were tested by Pearson correlation.The experimental results show that the radial artery simulation platform is stable,reliable and repeatable,and can generate multiple types of three-dimensional pulse information and blood pressure waveform at the simulated radial artery.The platform is simple in structure,low in cost,and produces many types of pulsating flow.It provides an experimental research platform for revealing the relationship between the three-dimensional pulse information of radial artery and the change of pressure inside the vessel,as well as the prediction of blood pressure waveform from the three-dimensional pulse information.