Pressure indicator for real-time monitoring and pressure visualization
Green safety zone:Cuff pressure suitable(40~60cmH,0)，
the cuff effectively seals the airway and guarantees ventilation.
Yellow mentioned zone:Cuff underpressure(0~40cmH,0)，
cuff underpressure，it’s easy to cause insufficient ventilation and VAP.
Red warning zone:Cuff excessive pressure(>80cmH,O)，cuff overinflation，
the safety of blood flow is blocked, which can lead to mucosal ischemic necrosis