Types of inhalation anesthesia machine

- Jun 21, 2019-

Air anesthesia machine

The device is lightly applicable and can directly use air and oxygen as carrier gas to assist in breathing and control breathing to meet various surgical requirements.

The working principle is that the patient connects the air anesthesia machine to the closed mask or the tracheal tube after completing the anesthesia induction. When inhaling, the anesthetic mixture enters the patient through the open inspiratory flap; when exhaling, the expiratory flap opens, and the inspiratory flap closes, expelling the exhaled gas. A folding bellows can be used when assisting or controlling breathing. Press down during inhalation and pull up when exhaling to ensure adequate ventilation. At the same time, according to actual needs, adjust the ether switch to maintain a stable anesthesia level.

DC anesthesia machine

The direct current anesthesia machine consists of high pressure oxygen, pressure reducer, flow meter, and anesthetic liquid evaporator.

Circulatory closed anesthesia machine

The device is supplied to the patient in a one-way flow through the escape valve (door) with low flow anesthetic mixture. The exhaled gas is re-used through the expiratory valve into the CO2 absorber. Its structure is mainly composed of oxygen supply and nitrous oxide device, gas flow meter, evaporator, CO2 absorber; one-way valve, breathing tube, escape valve, storage air bag, etc. Modern anesthesia machine is also equipped with ventilation Airway pressure, expiratory flow, end-tidal CO2 concentration, inhalation anesthetic concentration, oxygen concentration monitor, hypoxic alarm and hypoxic-nitrogen oxide automatic protection device.