Surgery – Respiratory method or device – Gas produced by electrolysis or chemical reaction
Patent
1978-01-12
1980-07-22
Recla, Henry J.
Surgery
Respiratory method or device
Gas produced by electrolysis or chemical reaction
12820517, 12820528, A62B 708
Patent
active
042134536
ABSTRACT:
A breathing device to facilitate a person's respiratory breathing of air with sufficient oxygen, comprises a breathing conduit adapted to be connected to a person for breathing. A breathing bag surrounds a portion of the conduit and it is connected into the conduit through suitable check valve elements to permit respiratory breathing along the conduit and from and to the bag. A first chemical cartridge has a first housing with an opening therethrough through which the conduit extends and it has an oxygen-liberating chemical therein which surrounds and is spaced radially outwardly from the conduit. An annular passage is defined in the space between the chemical and the conduit which communicates with the bag. The conduit has an end adjacent the bottom end of the first cartridge which is connectable to a central tube of a second chemical cartridge. The central tube has an end portion which interengages with the bottom end portion of the first conduit. The tubular conduit portion of the second chemical cartridge housing is spaced from the bottom end of the housing and respiratory air may circulate downwardly from the breathing conduit through the tubular central portion of the second chemical cartridge and back upwardly through the oxygen-liberating chemical which is contained in the second cartridge. The second chemical cartridge functions as a spare or an additional cartridge and the construction is such that the initial cartridge may be continued to be used while the second cartridge is cut into the breathing conduit line.
REFERENCES:
patent: 3326212 (1967-06-01), Phillips
patent: 3794030 (1974-02-01), Cotabish et al.
patent: 3980081 (1976-09-01), Cotabish et al.
patent: 4154236 (1979-05-01), Eckstein et al.
Pasternack Adalbert
Warncke Ernst
Dragerwerk Aktiengesellschaft
Recla Henry J.
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