Device and method for automatically regulating supplemental oxygen flow-rate
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United States of America Patent
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Issued Date -
Oct 12, 2006
app pub date -
Apr 12, 2005
filing date -
Apr 12, 2005
priority date (Note) -
Abandoned
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Abstract
Device and method for limiting adverse events during supplemental oxygen therapy are disclosed. In the present invention, the oxygen flow between a patient and an oxygen source is controlled with a valve such as a proportional solenoid capable of constraining flow-rates within a continuous range. The flow-rate of oxygen is accurately controlled in a closed-loop with flow-rate measurements. Measures of a patient's vital physiological statistics are used to automatically determine optimum therapeutic oxygen flow-rate. Controller signal filtering is disclosed to improve the overall response and stability. The control algorithm varies flow-rates to minimize disturbances in the patient feedback measurements.
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