Continuous spectroscopic measurement of total hemoglobin

A - Human Necessities – 61 – B

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A61B 5/00 (2006.01) G01N 33/49 (2006.01)

Patent

CA 2610753

Methods for measuring the total hemoglobin of whole blood include measuring reflective light at multiple wavelengths within the visible spectrum, calculating light absorbance at each of the multiple wavelengths, performing a comparison in a change in like absorbance between the multiple wavelengths, and/or relating the comparison to total hemoglobin. A system for measuring total hemoglobin of whole blood may include at least one light source, a catheter, optical fibers, at least one photodetector, data processing circuitry, and/or a display unit.

L'invention porte sur des méthodes de mesure de l'hémoglobine totale du sang entier, ces méthodes consistant à mesurer la lumière réfléchissante au niveau de plusieurs longueurs d'ondes dans le spectre visible, calculer l'absorbance de la lumière au niveau de chacune des longueurs d'ondes, effectuer une comparaison de la variation de l'absorbance entre toutes les longueurs d'ondes et/ou rattacher la comparaison à l'hémoglobine totale. L'invention porte également sur un système de mesure de l'hémoglobine totale du sang entier, ce système pouvant comprendre au moins une source de lumière, un cathéter, des fibres optiques, au moins un photodétecteur, un circuit de traitement des données et/ou un afficheur.

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