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Examples of HBO Chamber Designs
Multiplace
Used for up to 10 - 12 patients. The multiplace chamber is pressurized with air and the patient is provided with supplemental oxygen via mask, head tent, or endotracheal tube. See another multiplace chamber at the University of Iowa.
Monoplace
The entire patient is placed in the chamber.
Chamber Operation
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Gas Supply RequirementsApproximately 36,000 liters of oxygen are used per treatment. An air supply is also necessary for the airbreak mask or air demand valve. |
Gas Pathway
The main gas supply (A) from the wall outlet enters the Main Supply Regulators (B). The Main Supply Regulators deliver a high flow of oxygen (250 - 400 LPM) through tube (C) up into the Chamber where the gas blows over the top of the patient from head to foot and exits the base of the chamber.
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The Regulators are controlled by the Flow Computer Assembly (D) which receives input from the operator settings for Set Pressure, Rate Set, and Total Pressure. The Regulators also supply back pressure to three other regulators that make up the Purge Header Assembly (F). The first of these three regulators is shown as (E). The Purge Header Assembly continues to the right, out of the picture. |
Gas from the chamber enters the Purge Flowmeter Assembly (below) and then the Purge Header Assembly. The Purge Flowmeter Assembly includes the Master Solenoid, another Regulator (H), the Purge Rate Flowmeter (J), and the tube (I) that brings purged oxygen from the Chamber back to the Master Solenoid.
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The Master Solenoid regulates gas coming in and going out of the Chamber to accomplish compression and decompression. During compression, the Chamber pressure increases as more gas enters the chamber than exits. |