An oxygen concentrator is a medical device that extracts and concentrates oxygen from ambient air, providing a steady supply of oxygen to individuals with respiratory conditions. It functions by drawing in air, filtering out nitrogen and other gases, and delivering purified oxygen through a nasal cannula or mask. Unlike traditional oxygen tanks, concentrators do not require refilling and can be used continuously, making them convenient for both home and clinical settings. Portable models are available for on-the-go use, enabling greater mobility and independence for users. Oxygen concentrators play a crucial role in managing conditions such as chronic obstructive pulmonary disease (COPD), asthma, and respiratory failure, improving quality of life and supporting respiratory function.