基于一体化气路的微流式呼气末二氧化碳监测系统的研制  

Development of a Microstream End-Tidal Carbon Dioxide Monitoring System with Integrated Gas Circuit

作　　者：刘亚男 宋学东 尹琦 康富豪 杭岩 叶继伦 张旭 LIU Yanan;SONG Xuedong;YIN Qi;KANG Fuhao;HANG Yan;YE Jilun;ZHANG Xu(School of Biomedical Engineering,Health Center,Shenzhen University,Shenzhen,518037;Shenzhen Key Lab for Biomedical Engineering,Shenzhen,518037;ShenZhen Witleaf Medical Electronics Co.,Ltd.,Shenzhen,518132)

机构地区：[1]深圳大学医学部生物医学工程学院,深圳市518037 [2]深圳市生物医学工程重点实验室,深圳市518037 [3]深圳市惟拓力医疗电子有限公司,深圳市518132

出　　处：《中国医疗器械杂志》2025年第2期204-211,共8页Chinese Journal of Medical Instrumentation

基　　金：深圳市科技重大专项(KJZD20230923114306013);珠海市人才项目(2120004000207-06)。

摘　　要：呼气末二氧化碳监测是评估人体肺功能的重要手段,被广泛应用于临床急救、心肺复苏等领域。该文研制了一套微流式呼气末二氧化碳(CO_(2))监测系统,该系统采用一体化气路设计,进一步缩小了设备体积。其通过计算差压信号的均方根(root mean square,RMS)值调控气路流量,使系统可稳定运行于30 mL/min的流量状态。另外,该系统可以同时检测温度、压力等多种环境参数,实现对系统状态的监测和对气体参数的补偿。测试结果显示,该系统各项指标均满足相关标准要求,为后续的工程化应用奠定了良好的基础。End-tidal carbon dioxide monitoring is an important means of evaluating human lung function and is widely used in fields such as clinical emergency treatment and cardiopulmonary resuscitation.This paper develops a microstream end-tidal carbon dioxide monitoring system.It adopts an integrated gas circuit design to further reduce the size of the equipment.The system uses the method of calculating the root mean square(RMS)of differential pressure signals to regulate the gas circuit flow,enabling the system to stably operate at a flow state of 30 mL/min.In addition,by simultaneously detecting multiple environmental parameters such as temperature and pressure,the system realizes system state monitoring and gas parameter compensation.The test results show that various indicators of the system meet the requirements of relevant standards,laying a good foundation for subsequent engineering applications.

关 键 词：呼气末二氧化碳 非分散红外 微流式 气体检测 

分 类 号：R197.39[医药卫生—卫生事业管理] TH77[医药卫生—公共卫生与预防医学]