Study on Calibration Method of Continuous Positive Airway Pressure for Non-invasive Ventilator
Noninvasive ventilator is a kind of medical equipment widely used in clinic to provide respiratory support and treatment for patients.As the age of use increases,its accuracy and reliability may decrease,so regular calibra-tion is required.According to the JJF 1997-2022"Non-invasive Ventilator"calibration specification,most venti-lators have good universality,but the Mindray SV70s and Komen NV70 default to not work or mistrigger when cali-brating continuous positive pressure due to inconsistent internal algorithms and trigger sensitivity.It was found that the calibration work could be successfully completed by turning off the choking time in the alarm setting,adjusting the suffocating inspiratory pressure level,or connecting the simulated lung to the calibration system.