A hyperbaric oxygen chamber, specifically a hard chamber operating at 2 atmospheres (ATM) with 100% oxygen, works by delivering high-pressure oxygen to enhance the body’s healing processes. The chamber, typically made of steel or acrylic, is sealed and pressurized to 2 ATM, equivalent to the pressure at about 33 feet underwater. Inside, the patient breathes pure oxygen (100% O2) through a mask, significantly increasing the oxygen concentration in their bloodstream.

At 2 ATM, the partial pressure of oxygen is much higher than at sea level, allowing oxygen to dissolve more effectively into the blood plasma, beyond what hemoglobin can carry. This hyper oxygenated blood reaches tissues with poor circulation—like wounds, infections, or damaged areas—promoting healing. The high oxygen levels stimulate cell repair, reduce inflammation, boost immune responses, and combat anaerobic bacteria, which can’t survive in oxygen-rich environments.

Sessions typically last 60-120 minutes, with patients monitored for comfort and safety. The chamber’s rigid design ensures precise pressure control, and medical staff adjust settings to maintain 2 ATM. Side effects like ear pressure or mild oxygen toxicity are rare but managed carefully. This therapy is used for conditions like decompression sickness, chronic wounds, and certain infections.