What is the purpose of an oxygen concentrator?

An oxygen concentrator functions by extracting oxygen from the surrounding ambient air and delivering it at a higher concentration, which is essential for patients who require supplemental oxygen. The device utilizes a process called molecular sieving to separate oxygen from nitrogen and other gases present in the air. Ambient air is composed of approximately 21% oxygen and 79% nitrogen. An oxygen concentrator increases the percentage of oxygen supplied to the patient, often providing between 90% to 95% oxygen concentration.

This higher concentration of oxygen is crucial for individuals with respiratory conditions, as it ensures that they receive the adequate oxygen levels needed for their body to function properly. The concentrator draws in air, filters out nitrogen, and delivers the enriched oxygen directly to the patient through a nasal cannula or mask.

Other options, such as cooling down oxygen, mixing it with other gases, or compressing it for storage, do not accurately describe the primary function of an oxygen concentrator. The emphasis on extracting and concentrating oxygen is what distinguishes this medical device and highlights its vital role in oxygen therapy.