Piston-based ventilator design and operation
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United States of America Patent
Stats
-
Jul 30, 1996
Grant Date -
N/A
app pub date -
Oct 18, 1993
filing date -
Feb 19, 1991
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Improvements in piston-based ventilator design and operation are described. In one aspect, individual compensation of force dissipation within the gas delivery system is effected, so that the desired gas pressure is delivered to the patient airway without the necessity for monitoring the actual pressure and using it as feedback. In another aspect, a piston is dimensioned slightly less than the chamber wall of the pump to define a gap through which an acceptable amount of gas may leak but which eliminates the need for a physical seal, thereby minimizing the frictional resistance within the pump.
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Family
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