Apparatus and method for the detection of air in fluid delivery systems
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United States of America Patent
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Jan 1, 1991
Grant Date -
N/A
app pub date -
Feb 27, 1990
filing date -
Feb 27, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An infusion device includes an infusion pump for delivering a liquid through an infusion conduit from a separate source of the liquid into a patient, a bubble detector for detecting the presence of an air bubble in the infusion conduit, and control circuitry responsive to the bubble detector for determining if the size of the air bubble is unacceptable. The control circuitry is configured to determine if during the time the air bubble is detected it advances a distance indicative of the unacceptable size, one embodiment counting the steps of a linear peristaltic infusion pump for that purpose.
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