INSULATING RESPIRATORY SYSTEM Russian patent published in 2002 - IPC

FIELD: medical engineering. SUBSTANCE: device has oxygen source, balloon for storing gas mixture, recirculation circuit, having respiration sack with excessive pressure discharge valve, main, discharge agitator unit, filtration cartridge for removing harmful substances, gas distributor unit and individual breathing units having semi- masks, valve boxes, tubes for in- and exhaling, absorption cartridges, bacterial filters. The respiration sack is divided into two unequal parts with partition having non-return valve. Permeable carcass is placed inside of the greater part receiving the recirculation circuit and balloon for storing gas mixture with pulmonary automate, reducer and globe valve. Removable oxygen production units as oxygen source are connected to the smaller part through a collector unit with globe valves. EFFECT: prolonged service life. 2 cl, 1 dwg