吸氧是手术患者、急危重症患者重要的治疗手段之一,在临床上应用非常广泛。医用氧气计量器是患者从供氧站吸氧时的计量器具。长期以来,医院一直使用浮子式流量计,其缺点是:(1)计量不准确,流量随供氧站压力的变化而变化。(2)流量显示不直观。(3)只能测量实时流量,不能记录累积数 Oxygen is an important surgical treatment for patients with acute and critically ill patients and is widely used clinically. Medical oxygen meter is a measurement instrument when patients oxygen from oxygen station. For a long time, the hospital has been using the float-type flowmeter, its shortcomings are: (1) measurement is not accurate, the flow rate changes with the pressure of the oxygen station. (2) traffic display is not intuitive. (3) can only measure real-time traffic, can not record the cumulative number