Detection means for gas entering human blood system from...

Details Detection means for gas entering human blood system from... Detection means for gas entering human blood system from...

G - Physics

01

F

73/113, 349/39,

G01F 1/64 (2006.01) A61M 5/14 (2006.01) F17D 3/01 (2006.01) G08B 21/00 (2006.01)

Patent

CA 1060561

ABSTRACT Apparatus for detecting the flow of gas through tubing which is suited for use during medical procedures in which liquids are pumped into the blood system of a patient. The gas or bubble detector comprises conductivity detectors positioned along a controlled flow path such as a detecting means such as a venturi tube so as to be in close proximity to the flow through the tube. In a preferred embodiment, the conductivity detectors are connected to rate of change of flow detector circuitry which is in turn hooked to alarm and shut-off means to be actuated upon detection of gas bubbles.

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