Abstract：Objective To verify the effective service life of HFNC equipment, to ensure the safety and effectiveness of users.
Methods According to the two distribution principle, the sampling number was 10, and the actual effective test time was 22 h, per
day lasted 30 days. Based on the basis of life test, the acceleration life model is used to accelerate the event compression and stress
acceleration to evaluate the reliability under normal working stress. Results Eliminate other factors and ensure the safe and effective
duration of high-flow wet oxygen therapy equipment, determined at ≤12 h per day. Conclusion Accelerating test theory is applied
to the evaluation of medical device to shorten test time, improve test efficiency and reduce test loss.
邓振进1，刘向荣1，黄海萍1，曹俐1，吴碧涛1c，周宇1，徐勤鹏2，刘炜2. 高流量湿化氧疗装备的有效使用期限评价方法研究[J]. 中国医疗设备, 2021, 36(9): 31-33.
DENG Zhenjin1，LIU Xiangrong1，HUANG Haiping1，CAO Li1，WU Bitao1c，ZHOU Yu1，XU Qinpeng2，LIU Wei2. Study on the Effective Service Term Evaluation Method of HFNC Equipment. China Medical Devices, 2021, 36(9): 31-33.