RIB CAGE EXTERNAL NEGATIVE PRESSURE TYPE ARTIFICIAL RESPIRATORY APPARATUS WITH AUXILIARY EXHALING FUNCTION

摘要

PURPOSE:To achieve inhaling and exhaling as aid to a patient by arranging a pressurizing band which contains a flexible tube having an air inlet/outlet and is wound on a half of a human body to be tied at both ends thereof, an airtight jacket adapted to wrap the body on a highly rigid shell surrounding a chest part and an air pressure controller which lets a positive pressure be applied into and released from the pressurizing band and lets a negative pressure be done into the shell and therefrom alternately. CONSTITUTION:A pressurizing band 1, a shell 2 and an airtight jacket 3 are mounted on a patient A sequentially and an air pressure controller 6 is operated to perform an automatic control so that an inhaling phase and an exhaling phase are generated alternately. In the exhaling phase, air is sent to a rubber tube 11 at a lower stage to press a belly cavity by a positive pressure and after t1sec. air is sent to a rubber tube 12 at a medium stage to press an intermediate part of a chest cavity. In the subsequent inhaling phase, a negative pressure is given outside the rib cage and a belly to expand the rib cage and the belly so that atmospheric air is taken into a lung.