Continuous positive airway pressure controller
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United States of America Patent
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Oct 21, 2003
Grant Date -
N/A
app pub date -
May 21, 2001
filing date -
Sep 4, 1998
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A CPAP controller that supplies oxygen enriched air to a respiratory circuit that utilizes a venturi-jet arrangement within a chamber, which enriches ambient air. Ambient air is drawn into the chamber by a primary oxygen flow source via an oxygen jet that directs oxygen into the venturi. Besides the conventional ability to adjust oxygen/air ratio via changes in the primary oxygen flow source's flow rate adjustment, the oxygen/air ratio may be altered by way of a secondary oxygen supply and its own flow control adjustment that is independent of the primary oxygen source and its adjustment mechanism. Hence the oxygen/air ratio may be adjusted independently of the primary oxygen source's flow rate. The controller further includes a pressure adjustment mechanism that allows the user to adjust pressure to the demand and/or need of the patient.
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Family
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