Surgery – Respiratory method or device – Means for supplying respiratory gas under positive pressure
Patent
1986-08-15
1988-11-01
Coven, Edward M.
Surgery
Respiratory method or device
Means for supplying respiratory gas under positive pressure
12820517, 12820524, A62B 710
Patent
active
047811846
ABSTRACT:
A breathing apparatus provides a closed circuit which is capable of delivering substantially pure oxygen and removing carbon dioxide exhaled by a subject. The apparatus has low breathing resistance, the ability to provide intermittent positive pressure breathing and can be completely and efficiently purged of inert gases and other fluid impurities which are initially in the apparatus or exhaled by the subject. A carbon dioxide removal system in the apparatus prevents channeling of exhaled gases through scrubber material, thereby insuring efficient carbon dioxide removal. The condition of the carbon dioxide absorption material can be determined by visual inspection by an attendant while the subject is connected to the apparatus.
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Coven Edward M.
Reichle K. M.
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