Inogen One G4 -portable oxygen concentrator
The Inogen One G4 is one of the most basic portable oxygen concentrators aka POC in the market. Inogen, in particular, has created a niche for manufacturing some of the best and the lightest Respiratory oxygen therapy products, and the G4 is no exception. The Inogen One G4 is a line of product from Inogen that works as an external oxygen provider for those patients who have problems with oxygen intake capacity. It provides the simplest and the best alternative to replace the bulky and highly inconvenient oxygen cylinders.