Assessment of the Influence of Two Types Flowmeters on the Precision of Tidal
Volume in Ventilators
CHEN Xuebin1, SUN Jiwen2, LI Tianqing1, GAO Haipeng1, BAI Fei3, LIN Xia3
1. Department of Medical Engineering, China-Japan Friendship Hospital, Beijing 100029, China;
2. Beijing University of Chemical Technology, Beijing 100029, China;
3. Medical Management Center, Notional Health Commission of the People's Republic of China, Beijing 100191, China
Abstract：Objective To investigate the influence of two types of flowmeters on the measurement accuracy of tidal volume in
ventilators. Methods A total of ten ventilators used in our hospital were selected as the objects in this study, including five
type A ventilators and five type B ventilators. Type A ventilator adopted ultrasonic flowmeter, and type B used metal hotwire
flowmeter. The tidal volume parameters of the ventilators were measured by VT305 flow analyzer. Results The tidal volume
test results showed that the error range of the two types of ventilators were in line with the requirements of the national measurement
standards, but the tidal volume error value of type A flowmeter was obviously lower than that of type B flowmeter. Conclusion
There are differences in the precision of two types of flowmeters in the monitoring of ventilator tidal volume, but it needs to be
further verified with large sample size study and whole life-cycle detection.
陈学斌1，孙吉闻2，李天庆1，高海鹏1，白飞3，林夏3. 呼吸机流量传感器的类型对潮气量检测影响的评价研究[J]. 中国医疗设备, 2019, 34(5): 24-27.
CHEN Xuebin1, SUN Jiwen2, LI Tianqing1, GAO Haipeng1, BAI Fei3, LIN Xia3. Assessment of the Influence of Two Types Flowmeters on the Precision of Tidal
Volume in Ventilators. China Medical Devices, 2019, 34(5): 24-27.