Abstract：Objective To provide safe and effective nasal continuous positive airway pressure (CPAP) for newborns and very lowweight newborns. Medical workers need to be skilled in using and maintaining neonatal continuous positive airway pressure
ventilators. Methods After the medical staff overhauled the CPAP ventilator, the air source alarm and the failure of oxygen
concentration regulation were found, and then the engineer combined with the working principle of CPAP ventilator to analyze the
cause of the failure step by step, and the failure was successfully solved. Results After the spring of the pressure regulating valve
was replaced, the alarm was eliminated. The medical staff adjusted the potentiometer to calibrate or replace the oxygen battery so that
the oxygen concentration could be adjusted normally. Conclusion When similar failures occur, the repair method in this article can
save a lot of money for the hospital, and at the same time provide the maintenance direction for the medical staff.
李奥林，刘勇，夏信堂. 持续气道正压呼吸机原理分析及故障维修[J]. 中国医疗设备, 2020, 35(3): 171-173.
LI Aolin, LIU Yong, XIA Xintang. Principle Analysis and Troubleshooting of Continuous Positive Airway Pressure Ventilator. China Medical Devices, 2020, 35(3): 171-173.
