Extended data
Precautions for use
The pressure of ordinary oxygen bag is decreasing continuously when supplying oxygen, which requires medical staff to press the oxygen bag, and manual operation is laborious and laborious. Moreover, the ordinary medical oxygen bag has no oxygen output flow display device, so there is no basis for medical staff to follow when adjusting, and it is difficult to accurately adjust the oxygen flow.
The traditional common medical oxygen bag is easy to carry, and is widely used for home oxygen therapy, rescue or transportation of critically ill patients. However, the oxygen bag used in clinic has its shortcomings, and it is difficult to achieve the purpose of oxygen therapy.
Medical oxygen bags used in hospitals and emergency centers (stations) at all levels in China are made of three different materials: metal foil composite material, rubber nylon cloth and canvas. The attached oxygen switch, that is, the regulator, cannot effectively adjust and control the output flow.