Oxygen-breathing apparatus

Oxygen-breathing equipment - devices intended for oxygen applications with the medical purpose.
Tank of oxygen carrying about 10 liters of oxygen. From one corner of the pillow departs rubber tube with a crane and a mouthpiece. Fill the bed of special cylinder, in which oxygen is under pressure of 150 ATM. Before filling open the crane pillows, remove the mouthpiece, and a rubber tube is put on a special challenge cylinder with pressure reducer. To open the crane of the container it very slowly and carefully, until then, until you hear a noise coming into the pillow oxygen because oxygen comes out of the can under very high pressure. If you open it quickly, then in a strong jet of oxygen not only picks up the pillows, but may cause burns of hands. Throwing a pillow, you have to close the crane container, and then tap air bags, remove the rubber tube with a drain tank and put on her mouthpiece. To provide oxygen to the patient, it is necessary to cover the mouthpiece 2-3 layers of wet gauze firmly press the mouthpiece to the mouth of the patient and to open the crane. When oxygen in the pillow remains a little, his squeeze out with his free hand. After each patient's mouthpiece wash with disinfectant, and before the new drinking alcohol wipe.

oxygen inhaler
Fig. 1. Oxygen inhaler: 1 - oxygen cylinder; 2 - reducer with gauges; 3 - injector; 4 - a breathing bag; 5 - safety valve; 6 - mask; 7 - expiratory valve.

Oxygen inhalers (Fig. 1) consist of one or more interconnected metal cylinders, reduction gear, with two gauge indicating the pressure in the gas tank and flow of oxygen, often injector, which allows to save to reduce the concentration of oxygen because of the dilution air.
Oxygen inhalers usually placed in hospitals, with cylinders installed in a separate room or in a niche of the main walls away from heating appliances and protected from direct sunlight place and secure the metal bracket to the wall. From a cylinder of oxygen in the system of copper tubes served in the chamber, where each berth is equipped with a cock. Tap connect through humidifier (water) or nasal catheter (Fig. 2), or with breathing bag and mask.

Fig. 2. Inhalation of oxygen through nasal catheter.

Catheters smeared with vaseline and impose on the lower nasal go to the back of the throat, so as not to cause gagging. Oxygen through humidifier served with the speed of 2-3 l a 1 minutes Concentration of oxygen in the air we breathe when using a catheter - 30-40%.
The mask is a metal or plastic capsules, after application of the person covering the mouth and nose. For tightness they fit on the edges equipped with pneumatic or of foam rubber obturator. The mask has dyhatelnye and expiratory valves. Tube vaihteleva valve joins breathing bag of thin rubber, which allows 4 times as necessary to reduce the rate of oxygen supply. During exhalation oxygen accumulated in the breathing bag, when inhaling actively sucked light. When using a mask, you can raise the concentration of oxygen in the air we breathe to 60-80%. With long-term use mask poorly tolerated. It is not applicable with vomiting, coughing, salivation.

oxygen tent
Fig. 3. Oxygen tent (side view):
1 - awning;
2 is a gas analyzer to monitor the content of O2 and CO2 in populationa space;
3 - the tank with motor, a fan, a vessel with absorber CO2 and a tank of ice;
4 - ventilation pipe;
5 receiver of the water produced during melting ice;
6 - a box made of plexiglass.

Oxygen tent. The awning of obscuring gas material (Fig. 3) hung on the special holder on the headboard of the bed, and the free edge is charged under the mattress, so the head of the patient is under the awning.
The tent is equipped with Windows Plexiglas or the whole is made of transparent plastic. The holder of an awning, one or two large oxygen tank, gear and regenerator is placed on a metal platform on wheels. Oxygen comes in an oxygen tent with a speed of 6-8 liters in 1 min. Air mixture in an oxygen tent continuously with the help of the pump is run through a regenerator, which contained absorber of carbon dioxide ice for cooling and remove excess moisture. Concentration sour kind in the tent - 60 - 80%, carbon dioxide-not more than 1 %, temperature and humidity should match the comfort zone. Under these conditions the majority of patients can tolerate treatment in an oxygen tent.