Diagnostic device and system
First Claim
Patent Images
1. A diffraction-based assay device for detecting the presence of an analyte, the device comprising:
- a substrate that comprises a polymer film, wherein a first binder is present on the substrate in a pattern;
a fluidic guide with a first end and a second end in direct communication with a wicking agent, wherein the first end of the fluidic guide defines an opening therein for sample application and includes at least one channel through which a fluid test sample is capable of flowing via capillary action to the second end,wherein the wicking agent is capable of receiving the fluid test sample from the second end of the fluidic guide and thereafter facilitating contact of the fluid sample with the binder on the substrate; and
an electromagnetic radiation source that is configured to direct electromagnetic radiation to the substrate through the first end of the fluidic guide to the opening to generate a diffraction pattern proximate an area of the substrate defined by the second end of the guide.
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Abstract
Diagnostic devices, systems and methods for detecting the presence of an analyte in a sample are provided. In one embodiment, the device comprises a substrate, a binder printed in a pattern onto a surface of the substrate, and a means for directing a sample towards the surface of the substrate that is printed with the binder. Systems of the present invention further include a light source that can be directed through the aforementioned means or another opening to the binder-printed surface to test for diffraction.
80 Citations
18 Claims
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1. A diffraction-based assay device for detecting the presence of an analyte, the device comprising:
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a substrate that comprises a polymer film, wherein a first binder is present on the substrate in a pattern; a fluidic guide with a first end and a second end in direct communication with a wicking agent, wherein the first end of the fluidic guide defines an opening therein for sample application and includes at least one channel through which a fluid test sample is capable of flowing via capillary action to the second end, wherein the wicking agent is capable of receiving the fluid test sample from the second end of the fluidic guide and thereafter facilitating contact of the fluid sample with the binder on the substrate; and an electromagnetic radiation source that is configured to direct electromagnetic radiation to the substrate through the first end of the fluidic guide to the opening to generate a diffraction pattern proximate an area of the substrate defined by the second end of the guide. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 17)
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14. A diffraction-based assay device for detecting the presence of an analyte, the device comprising:
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a substrate that comprises a polymer film, wherein a first binder is present on the substrate in a pattern; a fluidic guide with a first end and a second end in direct communication with a wicking agent, wherein the first end of the fluidic guide defines an opening therein for sample application and includes at least one channel through which a fluid test sample is capable of flowing via capillary action to the second end; means for venting pressure to facilitate movement of the fluid test sample in a direction of the substrate; wherein the wicking agent is capable of receiving the fluid test sample from the second end of the fluidic guide and thereafter facilitating contact of the fluid sample with the binder on the substrate; and an electromagnetic radiation source that is configured to direct electromagnetic radiation to the substrate through the first end of the fluidic guide to generate a diffraction pattern proximate an area of the substrate defined by the second end of the guide. - View Dependent Claims (15, 16)
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18. A diffraction-based assay device for detecting the presence of an analyte, the device comprising:
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a substrate that comprises a polymer film, wherein a binder is present on the substrate in a pattern; a fluidic guide with a first and second end in direct communication with the wicking agent, wherein the first end of the fluidic guide receives a fluid test sample and includes at least one channel through which the fluid test sample is capable of flowing via capillary action to the second end, the wicking agent defining a hole therethrough and capable of receiving the fluid test sample from the second end of the fluidic guide and thereafter facilitating contact of the fluid sample with the binder on the substrate; and an electromagnetic radiation source that is configured to direct electromagnetic radiation to the substrate through the first end of the fluidic guide to generate a diffraction pattern proximate an area of the substrate defined by the second end of the guide.
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Specification