The OxyHeal® 4000 is oriented as a horizontal-cylindrical hyperbaric oxygen therapy (HBOT) chamber system. It is typically a two or three compartment system designed to treat 6-18+ patients simultaneously depending on the model type selected. Patients are treated in the main compartment and this sophisticated HBOT system is designed to increase a patient's level of care because healthcare staff will be inside the chamber attending to patients at all times during treatments. Additionally, healthcare staff have the ability to enter or exit the chamber if necessary during a treatment via the transfer compartment without interrupting the current HBOT treatment session. The OxyHeal® 4000 can be customized enabling chamber doors, viewports, diameter, length, seating, patient capacity, ATA, etc. to meet precise customer specifications. The OxyHeal® 4000 is designed, fabricated, assembled, inspected, tested, and certified in accordance with the Safety Standards for Pressure Vessels for Human Occupancy (PVHO).