The Need

Low‑oxygen, toxic environments created by fires or explosions in mines, tunnels, and enclosed spaces remain a leading cause of fatalities for trapped occupants and rescuers. Current self‑contained breathing and escape devices are constrained by limited oxygen supply, bulk, weight, heat generation, and reliability issues. These limitations can shorten survivability, restrict mobility, and hinder prolonged rescue or evacuation efforts in high‑stress emergency scenarios where extended breathing support is critical.

The Technology

OSU researchers have developed a portable oxygen‑concentrating self‑rescuer that actively extracts and concentrates residual oxygen from post‑fire or post‑explosion atmospheres while removing toxic gases. The system integrates air filtration, gas scrubbing, and oxygen concentration within a powered, wearable platform. An actively pressurized face mask delivers breathable air to the user, enabling extended operational duration compared to conventional emergency breathing apparatuses and improving usability across a range of confined‑space environments.

Commercial Applications

• Underground mining escape and rescue equipment.
• Structural and industrial firefighting breathing systems.
• Emergency response equipment for tunnels and confined infrastructure.
• Specialized respiratory protection for hazardous industrial environments.

Benefits/Advantages

• Extended operating duration versus finite‑supply oxygen tanks or generators.
• Reduced weight and bulk, improving mobility and expanding user populations.
• Active air pressurization for improved comfort and intuitive use.
• Enhanced safety and reliability through continuous oxygen recovery and toxic gas removal