Abstract: An apparatus (A) and method for preserving living organs extracorporeally in vessel (V) having a hyperbaric chamber (C) therein. The organ (O) stored in chamber (C) is provided with perfusate (P) from a reservoir (R) which is open to the atmosphere and freely accessible for the user who may thereby change or add constituents to the perfusate (P) without depressurizing the apparatus (A).

Abstract: A control system for a hyperbaric chamber and method for doing same which provides for an initial purging of a portion of the oxygen contained in the air within the chamber until an analyzer detects that the oxygen concentration has been reduced below the oxygen concentration of air at one atmosphere absolute pressure. Having reduced the oxygen concentration within the chamber using a pressurized inert gas, valves are operated to pressurize the chamber at a desired rate to a desired value. The patient within the chamber is connected to an independent breathing system where breathing gas is delivered to the patient at substantially the same pressure as the pressure in the hyperbaric chamber.