Devices and methods for electronic analyte assaying
First Claim
Patent Images
1. A disposable analyte detection device comprising:
- a receiving member configured to receive a test strip comprising a test region and a background region laterally displaced along the length of said test strip;
a first plurality of sensors placed such that said first plurality of sensors are located above said test region once said test strip is received;
at least one background sensor placed such that said background sensor is located above said background region once said test strip is received; and
a light source placed such that said light source illuminates said test region and said background region once said test strip is received; and
a processor programmed to;
receive test region signals indicating a quantity of light reflected from said test region from each of said first plurality of sensors;
receive background signals indicating a quantity of light reflected from said background region from said background sensor; and
generate a detection result based at least in part on a comparison of at least some of said received test region signals with at least some of said received background signals,wherein the processor is programmed to receive test region signals and background signals over a period of time, andwherein generating the detection result comprises, for a point during said period of time, combining a test region signal from one of said first plurality of sensors with a background signal and comparing said combination to a threshold.
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Abstract
An improved qualitative or semi-quantitative diagnostic test for measuring low levels of any analyte, such as hCG, in a biological sample, such as urine. The test comprises a test device containing reagents for the detection of the monitored analyte and an electronic reader that measures color development at a detection area of the device. The color development is converted to an electronic or digital signal. Improvements were made to the electronic reader to optimize the coverage of the detection area on the test strip. This improves the detection sensitivity and consistency of the test result while maintaining its reliability and accuracy.
21 Citations
15 Claims
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1. A disposable analyte detection device comprising:
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a receiving member configured to receive a test strip comprising a test region and a background region laterally displaced along the length of said test strip; a first plurality of sensors placed such that said first plurality of sensors are located above said test region once said test strip is received; at least one background sensor placed such that said background sensor is located above said background region once said test strip is received; and a light source placed such that said light source illuminates said test region and said background region once said test strip is received; and a processor programmed to; receive test region signals indicating a quantity of light reflected from said test region from each of said first plurality of sensors; receive background signals indicating a quantity of light reflected from said background region from said background sensor; and generate a detection result based at least in part on a comparison of at least some of said received test region signals with at least some of said received background signals, wherein the processor is programmed to receive test region signals and background signals over a period of time, and wherein generating the detection result comprises, for a point during said period of time, combining a test region signal from one of said first plurality of sensors with a background signal and comparing said combination to a threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of detecting an analyte, the method comprising:
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receiving, via a receiving member, a test strip comprising a test region and a background region laterally displaced along the length of said test strip; illuminating, via a light source, said test region and said background region; receiving, via a processor, test region signals indicating a quantity of light reflected from said test region included on the test strip from each of a first plurality of sensors; receiving, via said processor, background signals indicating a quantity of light reflected from said background region included on said test strip from a background sensor; and generating, via said processor, a detection result based on said received test region signals and said received background signals, wherein receiving said test region signals and said background signals occurs over a period of time, and wherein generating the detection result comprises, for a point during said period of time, combining a test region signal from one of said first plurality of sensors with a background signal and comparing said combination to a threshold. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A disposable analyte detection device comprising:
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means for receiving a test strip comprising a test region and a background region laterally displaced along the length of said test strip; means for illuminating said test region and said background region once said test strip is received; means for receiving test region signals indicating a quantity of light reflected from said test region included on said test strip from each of a first plurality of sensors; means for receiving background signals indicating a quantity of light reflected from said background region included on said test strip from a background sensor; and means for generating a detection result based at least in part on a comparison of at least some of said received test region signals with at least some of said received background signals, wherein receiving said test region signals and said background signals occurs over a period of time, and wherein generating the detection result comprises, for a point during said period of time, combining a test region signal from one of said first plurality of sensors with a background signal and comparing said combination to a threshold.
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Specification