Why in News?
With oxygen cylinders in short supply across several states, the Oxygen concentrator is among the most sought-after devices for oxygen therapy, especially among patients in home isolation and for hospitals running out of oxygen.
- Oxygen concentrator is a medical device that concentrates oxygen from ambient air
- Atmospheric air has about 78 per cent nitrogen and 21 per cent oxygen, with other gases making up the remaining 1 per cent.
- The oxygen concentrator takes in this air, filters it through a sieve, releases the nitrogen back into the air, and works on the remaining oxygen.
- This oxygen, compressed and dispensed through a cannula, is 90-95 per cent pure. A pressure valve in concentrators helps regulate supply, ranging from 1-10 litres per minute.
Difference Between Concentrators and Oxygen Cylinders and LMO
- Concentrators are portable and unlike LMO that needs to be stored and transported in cryogenic tankers, need no special temperature
- Unlike cylinders that require refilling, concentrators only need a power source to draw in ambient air.
- Apart from electricity and routine maintenance, there’s little by way of operational cost, unlike cylinders that involve refilling costs and transportation.
Source: Indian Express