Air-in-line detector
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United States of America Patent
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Apr 14, 1987
Grant Date -
N/A
app pub date -
Mar 28, 1985
filing date -
Mar 28, 1985
priority date (Note) -
Expired
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Abstract
A detector for automatically determining the presence of air in a fluid line comprises a plurality of ON-OFF optical sensors selectively disposed in series along the axis of a portion of an I.V. tube according to their relative light sensitivity and according to their dependence upon direct or refracted light for activation. An alarm condition indicates air-in-line when predetermined individual sensors change their ON or OFF condition in accordance with a microprocessor programmed logic sequence.
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