Automatic ventilator
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Feb 6, 1990
Grant Date -
N/A
app pub date -
May 3, 1988
filing date -
May 3, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
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.
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