In modern clinical medicine, the ventilator, as an effective means of artificially replacing the spontaneous ventilation function, has been widely used in respiratory failure caused by various reasons, anesthesia respiratory management during major surgery, respiratory support treatment and emergency resuscitation. It occupies a very important position in the field of modern medicine. Ventilator is a vital medical equipment that can prevent and treat respiratory failure, reduce complications, save and prolong the life of patients.
The ventilator delivers pressurized, filtered, warmed and humidified air to the patient. After the pressurized air enters the respiratory tract, even at the end of exhalation, the patient's lung tissue still has more air volume (ie, functional residual capacity). The existence of this part of the air volume will stimulate the upper airway tissue, increase the muscle tension of the upper airway, and prevent the upper airway from collapsing during sleep, so that the upper airway can maintain a sufficiently open caliber at the time of sleep as when it is awake, avoiding the period of sleep. Sexual airway collapse. Thereby reducing airway resistance in the upper airway and eliminating airway obstruction.