Pneumatic system
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United States of America Patent
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-
Sep 9, 1997
Grant Date -
N/A
app pub date -
Dec 9, 1994
filing date -
Dec 9, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A pneumatic system is provided for a ventilator is provided for controlling inspired and expired patient gas flow during respiratory therapy. The pneumatic system includes a pneumatic circuit for controlling a supply of one or more selected gases to a patient and a disposable patient breathing circuit for isolating exhaled patient gasses from the pneumatic circuit. The pneumatic circuit includes a dual venturi for assisting compression and expansion of a flexible gas reservoir of the patient breathing circuit.
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