A - Human Necessities – 62 – B
Patent
A - Human Necessities
62
B
137/1.5
A62B 7/00 (2006.01) A61M 16/00 (2006.01)
Patent
CA 1308623
AUTOMATIC VENTILATOR Abstract of the Invention A patient demand valve is automatically cycled open to provide selected volumes of oxygen at selected intervals. A pneumatic controller connected to an oxygen supply provides a control pressure to operate the demand valve, with the cycling provided by pneumatic timers. The oxygen supply to the patient is also through the controller to the demand valve. A tidal volume flow control valve provides an adjustable flow rate when open. In one embodiment, the patient demand valve is in an assembly which includes a safety subassembly, which incorporates a signaling device that indicates an over-pressure condition in the assembly as a result of a blockage of gas flow to the patient, and also includes an anti-suffocation valve. [GHO-2780] OEIO-6162 042489 LIFES.29A
598431
Gowling Lafleur Henderson Llp
Life Support Products Inc.
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