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Oxygen therapy is a type of treatment used by some patients with chronic obstructive pulmonary disease (COPD). COPD causes lung damage that can keep the lungs from being able to absorb enough oxygen. If the body does not have enough oxygen, it cannot function as well as it should.
An oxygen concentrator is a medical instrument that provides oxygen therapy to patients with respiratory illnesses. Oxygen concentrators administer oxygen that is purer than the oxygen in the ambient air. Oxygen concentrators have become significantly more popular than compressed oxygen tanks. Unlike oxygen tanks, oxygen concentrators do not run the risk of leaking and causing explosions or fires.