Minimal concentrations of CO2 are mixed with pressurized air to provide a gas mix effective for stabilizing breathing of target patients or users. CO2 concentrations below about 2% and preferably between about 0.5% and 1.25% are employed. A gas modulator includes a gas mixing module, a sensor and a control...http://www.google.es/patents/US7886740?utm_source=gb-gplus-sharePatente US7886740 - Gas systems and methods for enabling respiratory stability
Gas systems and methods for enabling respiratory stability
