Diagnostic device

G - Physics – 01 – N

Patent

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Details

G01N 33/558 (2006.01) B01L 3/00 (2006.01) G01N 33/543 (2006.01) G01N 33/569 (2006.01)

Patent

CA 2228485

The present invention describes a device for the detection or determination of the amount of an analyte in a test liquid in an autonomous way. The device comprises a transparent body provided with a conduit having an inlet and an outlet end. This conduit comprises a first junction branching off in a first branch and a second branch, and a second junction at which the first branch and second branch join. The first branch is provided with a sample inlet comprising assay reagents. The first branch and second branch are arranged such that, in use, a transporting liquid entering the inlet of the conduit is divided in said first banch and said second branch and promulgates a sample in the first branch through the second junction before the transporting liquid arrives at the second junction via the second branch. The outlet end of the conduit is provided with means for detection of the analyte. Optionally the conduit comprises a semi-permeable membrane between the second junction and the detection means to enable a bound/free separation step.

L'invention concerne un dispositif de détection ou de détermination de la quantité d'un échantillon à analyser présent dans un liquide d'essai, fonctionnant de manière autonome. Ce dispositif comprend un élément transparent muni d'un conduit ayant une entrée et une sortie. Ce conduit comprend un premier embranchement qui se sépare en deux canaux, et un second embranchement auquel se rejoignent les deux canaux. Le premier canal dispose d'une ouverture permettant l'entrée de l'échantillon et comportant des réactifs. Les deux canaux sont disposés de telle sorte que, lorsqu'ils sont utilisés, un liquide de transport entrant par l'entrée du conduit se répartit entre ledit premier canal et le second canal, et répand l'échantillon dans le premier canal en passant par le second embranchement avant que le liquide de transport ne parvienne au second embranchement en empruntant le second canal. La sortie du conduit est munie d'un moyen de détection de l'échantillon à analyser. Le conduit comprend facultativement une membrane semi-perméable entre le second embranchement et le moyen de détection, afin de permettre une séparation obligatoire/libre.

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