A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
137/1.52
A61B 6/06 (2006.01) A61B 5/08 (2006.01) A61M 16/12 (2006.01) A61M 16/00 (2006.01)
Patent
CA 1149702
VENTILATOR APPARATUS FOR LIFE-SUPPORT AND LUNG SCAN ABSTRACT OF THE DISCLOSURE Two identical bag-in-bottle bellows assemblies are provided for separately receiving and discharging breathable oxygen/air and oxygen/air/Xenon gas mixtures. An adjustable piston/cylinder gas pump is connected with the bellows assemblies through a system of conduits and valves for selectively operating the bellows of either assembly. Hoses are interconnected between the bellows and a patient mask to form inspiratory and expiratory paths. The expira- tory path includes a PEEP valve, a pressure actuated exhalation valve, an O2 concentration analyzer, and a CO2 absorber. The apparatus is capable of being instantaneously switched between the isolated oxygen/air and oxygen/air/Xenon delivery systems while continuously ventilating the patient and maintaining ventilation parameters (ventilation rate, inspiratory time, oxygen concentration, end-expiratory pressure, and tidal volume) substantially constant.
360968
Parsons Donald G.
Rauscher L. Andrew
Smart & Biggar
The Regents Of The University Of California
LandOfFree
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