Reducing optical interference in a fluidic device
First Claim
Patent Images
1. A method of detecting an analyte in a sample, comprising:
- a) allowing the sample to react with at least one reactant contained in a fluidic device that comprises;
an assay assembly configured to yield an optical signal that is indicative of the presence of the analyte;
b) moving unreacted reactant from the assay assembly to a quencher assembly operable to be in fluidic communication with, but spaced apart from said assay assembly, wherein said movement is effected via one or more actuating elements controlled by a controller, wherein said quencher assembly is adapted to reduce interference of said optical signal; and
c) detecting said optical signal thereby detecting the analyte in the sample.
5 Assignments
0 Petitions
Accused Products
Abstract
This invention is in the field of medical devices. Specifically, the present invention provides portable medical devices that allow real-time detection of analytes from a biological fluid. The methods and devices are particularly useful for providing point-of-care testing for a variety of medical applications. In particular, the medical device reduces interference with an optical signal which is indicative of the presence of an analyte in a bodily sample.
58 Citations
31 Claims
-
1. A method of detecting an analyte in a sample, comprising:
-
a) allowing the sample to react with at least one reactant contained in a fluidic device that comprises; an assay assembly configured to yield an optical signal that is indicative of the presence of the analyte; b) moving unreacted reactant from the assay assembly to a quencher assembly operable to be in fluidic communication with, but spaced apart from said assay assembly, wherein said movement is effected via one or more actuating elements controlled by a controller, wherein said quencher assembly is adapted to reduce interference of said optical signal; and c) detecting said optical signal thereby detecting the analyte in the sample. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 25, 26, 27, 28, 29, 30, 31)
-
-
10. A method of detecting an analyte in a sample, the method comprising:
-
allowing the sample to react with at least one reactant at a first location in the fluidic device to yield a detectable signal indicative of the presence of the analyte in the sample; after the sample has begun to react, reducing background signal by moving unreacted reactant from the first location to a second location and quenching said unreacted reactant at the second location that is separate from the first location, wherein said movement is effected via one or more actuating elements controlled by a controller; and detecting the detectable signal, thereby detecting the analyte in the sample. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
-
Specification