基于积分复位机制的人工胸外按压深度测量  

Manual Chest Compression Depth Estimation Based on Integration Reset Mechanism

作　　者：钱绍文[1] 郑捷文[1] 张广[1] 吴太虎[1] 

机构地区：[1]军事医学科学院卫生装备研究所,天津300161

出　　处：《生物医学工程学杂志》2013年第5期1033-1038,共6页Journal of Biomedical Engineering

基　　金：863计划项目资助(2009AA02Z410)

摘　　要：为实现人工心肺复苏术中胸外按压深度测量,采用两片三轴加速度传感器分别内置于病人胸部按压垫和背部按压垫内,采集加速度经预处理后进行二次积分得到的按压积分深度。建立了基于胸外按压压力的积分复位机制,通过采集胸外按压压力并识别特定压力阈值点和压力最大点,分别作为二次积分的开始点和结束点,减小积分累计误差。最后采用了一种软件补偿算法进一步提高胸外按压测量精度。通过283次胸外按压结果进行积分与DAQ采样实际按压深度比较,发现在95%的置信范围内,测量精度可以达到±0.6cm。胸外按压深度的实时精确测量有利于心肺复苏术中施救者对按压深度的控制,提高心肺复苏成功率。To realize the measurement of the chest compression depth during the administration of manual cardiopul- monary resuscitation, two 3-axis digital accelerometers were applied for chest compression acceleration and environ- ment acceleration acquisition, with one placed in the chest compression sensor pad, and the other placed in the back sensor pad. Then double integration was made for the acceleration-to-depth conversion with both of the accelerations after preprocessing. The method further included integration reset mechanism based on compression force, with the force point of a pre determined threshold and the maximum force point as the starting point and the ending point of the integration, respectively. Moreover, a software compensation algorithm was implemented to further increase the accuracy of the depth estimation and reliability of the acceleration. The final performance of the compression depth estimation is within 4-0.6cm with 95 % confidence of a total of 283 compressions. Accurate and real-time estimation of chest compression depth greatly facilitates the control of compression depth for the lifesaver during manual car- diopulmonary resuscitation.

关 键 词：心肺复苏 胸外按压深度 胸外按压加速度 二次积分 胸外按压压力 复位 

分 类 号：R459.7[医药卫生—急诊医学]