A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
A61B 5/02 (2006.01) A61B 5/028 (2006.01) A61B 5/029 (2006.01) G06F 19/00 (2006.01)
Patent
CA 2401534
A system for the determination of quantities relating to the circulatory system of a patient comprises a device for the non-invasive measurement of the qualitative variation over time of the local concentration of an indicator injected into the blood circulation system at a first position, the measurement taking place at a second position of the blood circulation system. An evaluating unit is provided, in which there is implemented an evaluating algorithm which transforms the qualitative variation into a quantitative variation over time of the local concentration of the indicator injected into the blood circulation system. For the purposes of the transformation, the condition is fulfilled that the cardiac output COdye calculable from the quantitative variation over time of the local concentration in accordance with a predetermined relationship is equal to an input value of the cardiac output COe, which has been determined by thermodilution measurement.
Un système permettant de déterminer les quantités liées au système circulatoire d'un patient comprenant un dispositif pour la mesure non invasive de la variation qualitative au fil du temps de la concentration locale d'un indicateur injecté dans le système de circulation du sang à une première position, la mesure prenant place à une deuxième position du système de circulation du sang .Une unité d'évaluation est fournie dans laquelle est mise en place un algorithme d'évaluation qui transforme la variation qualitative en une variation quantitative au fil du temps de la concentration locale de l'indicateur injecté dans le système de circulation du sang .Aux fins de la transformation, la condition est remplie que la sortie cardiaque calculable à partir de la variation quantitative au fil du temps de la concentration locale selon une relation prédéterminée est égale à la valeur de sortie cardiaque, qui a été déterminée par la mesure de thermodilution.
Burger Thorsten
Pfeiffer Ulrich J.
Freedman & Associates
Pulsion Medical Systems Ag
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