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呼吸阀是呼吸机的咽喉,一台精度无论多高的机子,如配上一只不理想的呼吸阀,都可能导致机子性能大幅度下降,甚至无法进行人工呼吸。目前国内外呼吸机种类很多,呼吸阀的型式也各有差异,但其基本原理都是相同的,即保证机子向肺内送气时,导通呼吸机输气管道与气管间的通道,并同时关闭气管与大气间的通道。在呼气时,则将大气和气管间的通道导通,而切断气管与呼吸机输气管道间的通道,以防肺内排出的废气经呼吸
The breathing valve is the throat of the ventilator. Any machine with high accuracy, such as an unsuitable breathing valve, may cause the performance of the machine to drop drastically, and even prevent artificial respiration. At present, there are many kinds of ventilators at home and abroad, and the types of breathing valves are different, but the basic principles are the same, that is, to ensure that when the camera sends air to the lungs, the passage between the ventilator gas pipeline and the trachea is conducted, and at the same time Close the passage between the trachea and the atmosphere. When exhaling, the passage between the atmosphere and the trachea is conducted, and the passage between the trachea and the ventilator gas pipeline is cut off to prevent exhaust gas discharged from the lungs from breathing.