What are the frequent failures of the dre anesthesia machine

　　During the use of the dre anesthesia machine, due to various reasons, it may fail in the following three parts and cause serious harm.

　　1, breathing circuit pipeline

　　2. Fold the pouch

　　3. Control system

　　Respiratory circuit failure

　　1. Loop shedding or air leakage:

　　1.1 It is most likely to appear in the Y-shaped part. There are 3 monitoring indicators:

　　① Airway pressure

　　② minute ventilation

　　③ end-expiratory CO2 concentration

　　If both are too low, the air leaks or the circuit falls off.

　　1.2 Increased respiratory circuit resistance. There are 2 monitoring indicators:

　　① tracheal catheter flexion

　　② The threaded pipe is blocked by compression

　　folding bag failure

　　It is easy for air leakage to occur between the transparent sealing cover outside the folding bag and the sealing ring.

　　The folded pouch is a rubber product, which will have small cracks due to aging, and it is easy to cause serious harm: the high pressure driving air passes through the crack mouth and directly affects the patient's lungs, inducing the alveolar overexpansion air compression injury.

　　Control system failure

　　The valve and escape valve inside the dre anesthesia machine can fail due to rupture and condensation

　　Pressure and flow sensors can fail due to aging or accidental damage

　　Therefore, inspection and regular maintenance before use are very important.

　　Required items in routine maintenance

　　1, Emergency ventilation device

　　2, Power Supply

　　3, Air source: air source pressure is about 0.4Mpa

　　4, low pressure test: low flow oxygen test, flow meter test

　　5, evaporation tank: switch, anesthetic addition

　　6, Respiratory circuit

　　7, dre anesthesia machine: manual/automatic switching, ventilation mode, rapid oxygenation, breathing valve, escape valve, folding sac, pressure gauge. Or according to the boot self-test prompts for self-test.

　　8, residual gas removal device: connection, negative pressure suction

　　9, monitoring part: calibrate various probes, sensors, set the alarm upper and lower limits

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