A hyperbaric chamber is a pressurized room or chamber where a patient receives therapy with pure oxygen, according to Mayo Clinic. This type of therapy is used to treat patients with decompression sickness, bubbles of air in the blood vessels or certain wounds that aren't healing.
The hyperbaric oxygen therapy chamber has an air pressure that is three times higher than normal, explains Mayo Clinic. This makes it possible for a person to inhale more oxygen than under normal conditions. With more oxygen in the blood, more growth factors and stem cells are released to make healing faster and help fight infection.