Safety is the foremost consideration for any pressurized oxygen therapy device. Mild hyperbaric oxygen chambers operate at gentle pressure levels (1.3–1.5 ATA) that are well-tolerated by most users. However, all pressurized oxygen environments require careful attention to safety protocols. Understanding these safety considerations helps buyers select quality products and users maintain safe operation.
Regulatory Oversight and Standards
The U.S. Food and Drug Administration (FDA) classifies HBOT devices as Class II medical devices cleared through the 510(k) process. In August 2025, the FDA issued a Letter to Health Care Providers reminding facilities about the safe use of HBOT devices and the importance of following manufacturer’s instructions. The FDA is aware of reports of serious injuries and deaths with HBOT devices and provides specific recommendations to help reduce potential risks.
Key FDA recommendations include:
- Review and follow manufacturer’s instructions for each device
- Ensure fire prevention and safety measures are followed
- Be aware of heightened fire risk with high-concentration oxygen
- Ensure proper grounding equipment is used
- Ensure proper staff training and maintenance
- Ensure patient monitoring throughout treatment
- Follow manufacturer-recommended cleaning procedures and maintenance intervals
- Avoid prohibited items during use, including electrical or static devices
- Ensure patients wear hyperbaric-compatible materials such as cotton
Fire Safety
Fire risk is the most significant safety concern in oxygen-rich environments. The FDA specifically notes that “there is a heightened risk of fire with use of oxygen at a high concentration”. Reputable manufacturers address this through:
- Fire-resistant chamber materials
- Static electricity prevention measures
- Proper electrical grounding
- Oxygen concentration monitoring with automatic safety cutoffs
- Fire extinguisher placement near chambers
Operational Safety
Safe operation requires adherence to established protocols:
- Keep the chamber quiet and clean
- No smoking in or near the chamber; avoid smoking 2 hours before use
- Do not touch control panels or devices inside the chamber unnecessarily
- Follow proper pressurization and depressurization procedures
- Ensure proper training for all operators
User Screening
Not all individuals are suitable candidates for hyperbaric oxygen therapy. Contraindications include uncontrolled seizure disorders and certain other conditions that must be carefully evaluated by a physician. Users with specific medical conditions should consult healthcare providers before beginning therapy.
Quality Certification as a Safety Indicator
For buyers, regulatory certifications are key indicators of product safety. Reputable manufacturers maintain ISO 13485 (medical device quality management) certification. For European markets, CE marking under the EU Medical Device Regulation (MDR 2017/745) is required. For the U.S. market, FDA clearance through the 510(k) process is the standard. ASME PVHO-1 certification (Pressure Vessels for Human Occupancy) is another important safety standard.
The FDA believes that serious adverse events associated with HBOT devices are rare when manufacturers’ instructions are properly followed. However, the FDA continues to work with manufacturers and professional societies to encourage training and safe use of these devices.
