facebook Pintrest With a surge in the number of severe COVID-19 patients in the country, the demand for oxygen supplies has only increased. While a large population of people gasping for breath and queuing up outside hospital premises, there are also a significant number of infected individuals, who are getting themselves treated at home, breathing with the help of oxygen concentrators and other means of oxygen. But what is an oxygen concentrator and how does it work? Here's everything you need to know. What is an oxygen concentrator and how does it work? COVID-19 is a respiratory illness. It not only infects the respiratory tract, but in severe COVID patients, it also takes a heavy toll on their oxygen saturation levels. With oxygen deprivation and increasing lung infections in COVID patients, oxygen concentrators and cylinders are highly valuable.