What is an oxygen concentrator?

An oxygen concentrator is specifically designed to extract nitrogen from ambient air, thereby concentrating the oxygen to deliver it to the patient. This device utilizes a process called pressure swing adsorption, wherein it draws in room air and then separates oxygen from other gases like nitrogen. The resulting concentrated oxygen can be delivered to patients who require supplemental oxygen due to various medical conditions, such as chronic obstructive pulmonary disease (COPD) or other respiratory diseases.

This functionality is vital since it allows individuals to receive the necessary oxygen therapy in a portable and efficient manner. Other options do not describe the essential function of the oxygen concentrator; for instance, cooling the air, mixing gases, or measuring respiratory rates are unrelated to the role of concentrating and providing oxygen.