Mild hyperbaric oxygen therapy (mHBOT) is based on Henry's Law, which describes how gases dissolve into liquids under pressure. As chamber pressure gradually increases and users breathe oxygen-enriched air, the higher oxygen partial pressure promotes greater oxygen dissolution into blood plasma and other body fluids. The spacious chamber can accommodate an assistant or observer alongside the user, providing convenient support with session monitoring, system operation, or assistance when needed. Combined with its four-person capacity, the chamber offers institutions a practical way to incorporate mild hyperbaric oxygen into broader wellness and recovery programs.

Engineered for commercial and family wellness spaces, Unohai multiplace hyperbaric oxygen chamber (4-person hyperbaric chamber) features an environmental control system to create a controlled mild-pressure environment within a larger shared cabin. During operation, filtered ambient air is compressed and continuously supplied to the sealed chamber, gradually building internal pressure for multi-user operation. Pressure sensors provide real-time operating data to the control system, which adjusts inlet and exhaust airflow to maintain chamber pressure within a mild range of 1.1–1.3 ATA.

An oxygen concentrator applies molecular sieve technology to generate oxygen-enriched air, which can be delivered either directly into the mHBOT chamber ambient, or supplied via dedicated supply lines to individual nasal cannulas for each user. When the session is complete, the hyperbaric oxygen therapy system gradually controls the exhaust flow to release chamber air and reduce the internal pressure smoothly to normal atmospheric pressure before the chamber door is opened.