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  2. Portable oxygen concentrator - Wikipedia

    en.wikipedia.org/wiki/Portable_oxygen_concentrator

    A portable oxygen concentrator (POC) is a device used to provide oxygen therapy to people that require greater oxygen concentrations than the levels of ambient air. It is similar to a home oxygen concentrator (OC), but is smaller in size and more mobile. They are small enough to carry and many are now FAA -approved for use on airplanes.

  3. Oxygen concentrator - Wikipedia

    en.wikipedia.org/wiki/Oxygen_concentrator

    Oxygen concentrator. An oxygen concentrator is a device that concentrates the oxygen from a gas supply (typically ambient air) by selectively removing nitrogen to supply an oxygen-enriched product gas stream. They are used industrially, to provide supplemental oxygen at high altitudes, and as medical devices for oxygen therapy.

  4. High altitude breathing apparatus - Wikipedia

    en.wikipedia.org/wiki/High_altitude_breathing...

    High altitude breathing apparatus is a breathing apparatus which allows a person to breathe more effectively at an altitude where the partial pressure of oxygen in the ambient atmospheric air is insufficient for the task or to sustain consciousness or human life over the long or short term. High altitude breathing sets may be classified by type ...

  5. Chemical oxygen generator - Wikipedia

    en.wikipedia.org/wiki/Chemical_oxygen_generator

    A chemical oxygen generator is a device that releases oxygen via a chemical reaction. The oxygen source is usually an inorganic superoxide, [1] chlorate, or perchlorate. Ozonides are a promising group of oxygen sources, as well. The generators are usually ignited by a firing pin, and the chemical reaction is usually exothermic, making the ...

  6. Artificial gills extract oxygen from water - Engadget

    www.engadget.com/2006-01-31-artificial-gills...

    Oxygen is then separated from the water and stored in a bag for breathing. While the system may be a technical breakthrough, it imposes its own limits on divers, including the need for a heavy ...

  7. Home run exits happen stealthily for biotech | TechCrunch

    techcrunch.com/2018/07/28/home-run-exits-happen...

    Then on the device side there’s Inogen, a maker of portable oxygen concentrators for patients with respiratory ailments. It went public at a valuation of less than $300 million in 2014.

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