Device for use in detecting occlusion in an infusion system
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United States of America Patent
Stats
-
Jan 13, 1981
Grant Date -
N/A
app pub date -
Mar 26, 1979
filing date -
Mar 26, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An overpressure device is disclosed for use in a liquid infusion set for the purpose of detecting excessive pressures which may occur during infusion. The device comprises a tubular member with an inlet and an outlet, a closed pressure chamber and a bridging portion containing a small bore passage which connects the pressure chamber with the tubular member. In a preferred form, the interconnecting passage takes a tortuous path. An optical sensor positioned on the pressure chamber will detect the presence of liquid at a predetermined position in the chamber, when the liquid rises as a result of excessive pressure in the set, and respond by stopping the flow of liquid in the set.
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