Method and device for measurements in blood

Details Method and device for measurements in blood Method and device for measurements in blood

G - Physics

01

N

G01N 21/05 (2006.01) A61B 5/00 (2006.01) G01N 21/53 (2006.01)

Patent

CA 2501360

We present an optical probe arrangement that surrounds blood in a receptacle. It comprises LED's and light detector arranged to overcome the variations when the receptacle is translucent medical tubing and the like. Also, a signal processing algorithm is used to average signals from a plurality of light detectors, to further enhance results when measuring hematocrit. The invention makes it possible to add the feature of hematocrit measurement into dialysis system without major alterations to the dialysis machine or transport tubing.

L'invention concerne un ensemble sonde optique disposé autour d'un réceptacle contenant du sang. Cet ensemble sonde optique comprend des DEL ainsi qu'un photodétecteur servant à compenser les variations engendrées lorsque ledit réceptacle se présente sous la forme d'un tube médical translucide ou analogue. En outre, un algorithme de traitement de signaux est utilisé pour établir la moyenne des signaux issus d'une pluralité de photodétecteurs, pour améliorer davantage les résultats obtenus lors des mesures de l'hématocrite. Cette invention permet d'ajouter la fonction mesure de l'hématocrite aux systèmes de dialyse sans apporter de modifications majeures aux machines de dialyse ou tubes de transport.

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