Analyte concentration detection devices and methods
AssigneeRosedale Medical, Inc.
InventorsPeter J. Zanzucchi, Sterling E. McBride
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Abstract
Arrangements for the detection of the presence and/or concentration of an analyte in a sample of bodily fluid include diffuse transmission, diffuse reflection and edge or waveguide illumination arrangements. A vertical flow assay arrangement and/or technique is also disclosed, and includes a detection component that can be in the form of an array of optical detection elements. A number of assay pad constructions are described which may include at least one or more of the following components: a prefilter component, a reflective component, a membrane component, a reagent component, a mesh component, and a component to prevent lateral spreading.
Claims23
A device for use in conducting an assay to determine the concentration of an analyte in a sample of bodily fluid, the device comprising:
- a sample collection chamber having a bottom with at least one opening;
- an assay pad in communication with the at least one opening of the chamber, the assay pad comprising a reagent adapted to produce a chemical reaction when exposed to the analyte, the chemical reaction producing a color change in the assay pad;
- and
- a linear array of CMOS optical detectors disposed relative to the assay pad so as to detect the color change, wherein the chamber defines a length, and the linear array has a plurality of CMOS sensors that define a length of the array that is commensurate to the length of the chamber.
Dependencies are inferred from the claim text.