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瑞典Ume■大学的Reiz等,1986年在临床上应用了一种新型面罩——双层面罩(Dou-ble Mask),它在用于麻醉的同时,还可排除病人头部周围的麻醉废气,提供了一种新的排污方法。 Double Mask的内层是有弹性的软罩,外层是一个与内罩形状相似的透明的塑料硬壳。在软罩的顶部有一个用以导入和排出气体的装置——气流分配器(Distributor)。外壳和内层软罩之间留有3～4mm宽的间隙,由内罩溢出的麻醉气体和挥发性麻醉剂经此间隙进入排气装置。这种面罩可用于重复吸入和无重复吸入装置;用于插管病人,可将双层面罩取下,此时接头处仍为双层,将气管导管接至内管,
Ume University in Sweden ■ University Reiz et al. Applied a new type of mask, the Dou-ble Mask, in clinical practice in 1986, which can be used for anesthesia and can also eliminate the anesthetic waste gas around the patient’s head, A new method of blowdown is provided. Double Mask’s inner layer is a flexible soft cover, the outer layer is a shape similar to the inner cover of a transparent plastic hard shell. At the top of the soft cover there is a device for introducing and discharging gas - a flow distributor. There is a 3 ~ 4mm wide gap between the outer shell and the inner soft cover, and the anesthetic gas and volatile anesthetic agent overflowed from the inner cover enter the exhaust device through this gap. This mask can be used for repeated inhalation and non-repetitive inhalation device; for intubation patients, the double mask can be removed, then the junction is still double, the endotracheal tube connected to the inner tube,