How does an oxygen concentrator work?

Oxygen is part of the list of essential medicines of the World Health Organization and, however, is not widely distributed in developing countries that bear the greatest mortality burden of newborns, children and seriously ill adults. The reasons for poor access to oxygen are usually the cost and lack of infrastructure to install and maintain a reliable gas supply. Even when there is an oxygen supply in healthcare facilities, patients’ access to it can be restricted due to lack of accessories, inadequate power supply or shortage of qualified personnel.