single-flow oxygen concentrator is a medical device that provides a continuous flow of concentrated oxygen to a patient through a single outlet. It draws in ambient air, filters and compresses it, and then delivers medical-grade oxygen, typically with a purity of 90-95%, at a controlled flow rate, usually adjustable from 0.5 to 10 liters per minute (LPM). These concentrators are commonly used for homecare, clinics, and hospitals to support patients with breathing difficulties.