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US 5,631,552 AGranted
Hemodynamic monitor for detecting air bubbles
AssigneeCobe Laboratories, Inc.
InventorsFrancis T. Ogawa, James M. Brugger
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AssigneeCobe Laboratories, Inc.
InventorsFrancis T. Ogawa, James M. Brugger
Estimating the term…
The presence of air bubbles entrained in a liquid flowing through a tube is detected flowing the liquid through a conduit which comprises a conductivity cell with a continuous path configuration. An electrical current is induced in the liquid in the conductivity cell. The electrical current in the liquid in the conductivity cell is sensed and interpreted, a decrease in the electrical current being indicative of the presence of an air bubble in the liquid. The conductivity cell comprises an upstream connection, a downstream connection, and two branches connecting the upstream connection to the downstream connection with a continuous path configuration from the upstream connection to the downstream connection through one of the two branches and returning to the upstream connection through the other one of the two branches.
A method for detecting the presence of air bubbles entrained in a liquid flowing through a tube comprising:
An apparatus for detecting the presence of an entrained air bubble in a liquid having a conductivity flowing in a tube, comprising:
Dependencies are inferred from the claim text.