Ultrasonic air and blood foam detector

Details Ultrasonic air and blood foam detector Ultrasonic air and blood foam detector

G - Physics

01

N

349/36

G01N 29/02 (2006.01) A61B 8/00 (2006.01) A61M 1/36 (2006.01) G01N 29/032 (2006.01) G01N 29/24 (2006.01)

Patent

CA 1108282

ULTRASONIC AIR AND BLOOD FOAM DETECTOR Abstract of the Disclosure An ultrasonic air and blood foam detector for use in medical procedures involving extracorporeal handling of blood. A sensor assembly is adapted for positioning about a blood drip chamber and contains ultrasonic trans- ducer means. The blood tube downstream from the drip chamber is preferably placed through the controllable clamp. Electronic circuitry provides excitation to the ultrasonic transducer means and signals transmitted through the chamber are received, amplified and processed by a level detector which provides an output signal for actuating the clamp when a predetermined low signal level occurs, indicating excessive air or foam in the drip chamber. In the preffered embodiment, a clip-on sensor assembly having epoxy lenses is provided.

282260

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