The equipments or components all comply with the following relevant international standards:
 ISO 8835-2 ,ISO 8835-4 ,ISO 8835-5 ,IEC 60601-2-13,IEC 60601-1-8,ISO 21647:2004.

Whole machine structure
Equipment mainly comprises rack, flowmeter, anesthesia evaporator(enflurane or isoflurane or sevoflurane or halothane or desflurane), anesthesia ventilation system, oxygen fault alarm and protective device , anesthesia ventilator.

Working principle
If “Bag” mode is selected, the fresh gas sent to breathing circuit system will be stored manual reservoir bag. This time, the breathing of the patient is manually controlled by squeezing reservoir bag with an hand.
For inhalation, the gas and fresh gas outputted from ventilator bellow or reservoir bag will be sent into patient’s lung via CO2 absorber, inspiratory valve, inspiratory gas connector, breathing pipe and patient connection port.
For exhalation, expired gas will come back into ventilator bellow or reservoir bag via patient  connection port, breathing pipe, expiratory gas connector and expiratory valve for a complete cycle. The excessive gas will be discharged through APL valve.

Oxygen rapid supply switch
 The oxygen rapid supply switch is used for providing high flow rate O2  to anesthesia ventilation system through fresh air outlet:
Press oxygen rapid supply switch,output high flow rate O2;
Loose oxygen rapid supply switch,then the air flow will stop.

Anesthesia
 in accordance with requirements,adjust gross flow rate of fresh gas(generally, flow rate is 0.5~1L/min);
 Rotate concentration adjustment knob to required concentration scale ;
 After using,rotate concentration adjustment knob clockwise to position“0”.