Method and apparatus for detection of air bubbles in tubing
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United States of America Patent
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-
Apr 27, 1993
Grant Date -
N/A
app pub date -
Jan 23, 1992
filing date -
Jan 23, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method and apparatus for assisting in the detection of bubbles in a fluid stream such as an intravascular line. Tubing having ribbing or other texturing spaced along the longitudinal axis to enhance signal transmission characteristics and to increase the number of signals intercepted by a passing bubble, is placed between an ultrasonic or other transmitter and detector. In other embodiments, bubbles are concentrated into a detection zone by a centrifugator or are concentrated and recirculated in a detection zone by an eddy-producing protrusion in the fluid stream.
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