Sheet-like diagnostic device
First Claim
1. An analytical device for the detection or determination of a component in a fluid wherein said component is an analyte with bioaffinity binding properties, comprising a layer of a plurality of substantially planar zones adjacent one another and in absorbent contact with one another, said layer including:
- a mobile phase application zone (MPAZ), an intermediate zone (IZ) and an adsorption zone (AZ), liquid being capable of moving by adsorption from said MPAZ through said IZ to said AZ, and wherein said IZ further comprises a solid phase zone (SPZ) having at least one unlabelled reactant, capable of interactions of biological affinity with at least one analyte;
at least one unattached, labelled reactant (conjugate), capable of interactions of biological affinity with said at least one analyte, disposed in an area between the MPAZ and the SPZ; and
an analyte application zone disposed at said MPAZ or in between said MPAZ and said AZ, wherein after application of said at least one analyte, said at least one analyte is reacted with said reactants in said layer and is detected in said layer.
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Accused Products
Abstract
A solid diagnostic device for the quantitative determination of substances of biological affinity in biological fluids is described. A process is also described in which the biological fluid is brought into contact with a specific functional sector of the device, the fluid migrates through several functional sectors situated beside one another and containing suitable reagent components, and one or more substances of biological affinity are detected in such functional sectors which contain, for each substance to be detected, at least one combination partner of biological affinity, attached to a solid phase.
330 Citations
34 Claims
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1. An analytical device for the detection or determination of a component in a fluid wherein said component is an analyte with bioaffinity binding properties, comprising a layer of a plurality of substantially planar zones adjacent one another and in absorbent contact with one another, said layer including:
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a mobile phase application zone (MPAZ), an intermediate zone (IZ) and an adsorption zone (AZ), liquid being capable of moving by adsorption from said MPAZ through said IZ to said AZ, and wherein said IZ further comprises a solid phase zone (SPZ) having at least one unlabelled reactant, capable of interactions of biological affinity with at least one analyte; at least one unattached, labelled reactant (conjugate), capable of interactions of biological affinity with said at least one analyte, disposed in an area between the MPAZ and the SPZ; and an analyte application zone disposed at said MPAZ or in between said MPAZ and said AZ, wherein after application of said at least one analyte, said at least one analyte is reacted with said reactants in said layer and is detected in said layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A process for the detection or determination of a component in a fluid wherein said component is an analyte with bioaffinity binding properties by rehydrating or solvating reactants and reagents by the fluid containing the analyte or by an additional fluid, said reactants and reagents being present in a dehydrated state in an analytical device for the detection or determination of a component in a fluid wherein said component is an analyte with bioaffinity binding properties, comprising a layer of a plurality of substantially planar zones adjacent one another and in absorbent contact with one another, aid layer including:
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a mobile phase application zone (MPAZ), an intermediate zone (IZ) and an adsorption zone (AZ), liquid being capable of moving by adsorption from said MPAZ through said IZ to said AZ, and wherein said IZ further comprises a solid phase zone (SPZ) having at least one unlabelled reactant, capable of interactions of biological affinity with at least one analyte; at least one unattached, labelled reactant (conjugate), capable of interactions of biological affinity with said at least one analyte, disposed in an area between the MPAZ and the SPZ; and an analyte application zone disposed at said MPA or in between said MPAZ and said AZ, said process comprising; applying a sample to said analyte application zone, reacting the at least one analyte in the sample in said layer and detecting said at least one analyte in said layer. - View Dependent Claims (13, 14, 15, 16, 17)
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18. An analytical device for the detection or determination of a component in a fluid wherein said component is an analyte with bioaffinity binding properties, comprising a layer of a plurality of sheet-like zones adjacent one another and in absorbant contact with one another, said layer including:
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a mobile phase application zone (MPAZ), an intermediate zone (IZ) and an adsorption zone (AZ), liquid being capable of moving by adsorption from said MPAZ through said IZ to said AZ, and wherein said IZ further comprises a solid phase zone (SPZ) capable of having at least one unlabelled reactant fixed thereto which is capable of interactions of bioaffinity with at least one analyte, during analysis said at least one unlabelled reactant being fixed to at least one second reactant which is fixed to said solid phase zone; at least one unattached labelled reactant (conjugate), capable of interactions of biological affinity with said at least one analyte, disposed in an area between said MPAZ and said SPZ; and an analyte application zone disposed at said MPAZ or in between said MPAZ and said AZ, wherein after application of said at least one analyte, said at least one analyte is reacted with said reactants in said layer and is detected in said layer. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A process for the detection or determination of a component in a fluid as an analyte with bioaffinity binding properties by rehydrating or solvating reactants and reagents by the fluid containing the analyte or by an additional fluid, said reactants and reagents being present in a dehydrated state in an analytical device for the detection or determination of the analyte, said device including a layer of a plurality of substantially planar zones adjacent one another and in absorbent contact with one another, said layer including:
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a mobile phase application zone (MPAZ), an intermediate zone (IZ) and an adsorption zone (AZ), liquid being capable of moving by adsorption from said MPAZ through said IZ to said AZ; a solid phase zone (SPZ) in said IZ capable of having at least one unlabelled reactant fixed thereto which is capable of interactions of bioaffinity with at least one analyte, during analysis said at least one unlabelled reactant being fixed to at least one second reactant which is fixed to said solid phase zone; at least one unattached labelled reactant (conjugate), capable of interactions of biological affinity with said at least one analyte, disposed in a zone between the MPAZ and the SPZ; and an analyte application zone disposed at said MPAZ or in between said MPAZ and said AZ; said process comprising; applying a sample to said analyte application zone, reacting the at least one analyte in the sample in said layer and detecting said at least one analyte in said layer. - View Dependent Claims (30, 31, 32, 33, 34)
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Specification