Disposable test strip device for analyte detection in a body liquid sample
First Claim
1. A disposable, enzymatic assay based test strip device for colorimetric detection of an analyte compound in a body liquid sample, comprising:
- a base support;
a substrate material disposed on said base support and defining a number of reactive test zones and a reactive control zone; and
a compound buffer comprising a chemical compound same or equivalent to the analyte compound and bearing a functional group characteristic to the analyte compound,wherein each reactive test zone is configured to develop a visual indication when the concentration of the analyte compound in the body liquid sample exceeds a predetermined limit and the reactive control zone is configured to develop a visual indication upon being supplied with the body liquid sample,wherein the substrate material defining each reactive test zone and the reactive control zone is deposited with a biological ink composition comprising at least one enzyme and a chromogen, said biological ink composition being identical in each reactive test zone and the reactive control test zone; and
wherein the substrate material defining the reactive control zone is further disposed with the compound buffer configured to reside within the substrate material defining the reactive control zone such, that the buffer compound is prevented from admixing with the biological ink composition in the reactive control zone until the substrate material, defining said reactive control zone is supplied with the body liquid sample, thereupon the visual indication is developed.
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Accused Products
Abstract
A disposable, enzymatic assay based test strip device for colorimetric detection of an analyte compound, such as ethanol, in a body liquid sample, such as saliva, is provided. The test strip device includes at least one reactive test zone configured to develop a visual indication when the concentration of the analyte compound in the body liquid sample exceeds a predetermined limit, and a reactive control zone configured to develop a visual indication upon being supplied with the body liquid sample. The test strip device further includes a compound buffer, preferably selected from non-volatile alcohols and disposed to closely adjoin the reactive control zone such, that the content of the compound buffer admixes with the reagents provided within the reactive control zone, while the control zone is being supplied with the body liquid sample. Deposition of the reactive zones is preferably implemented by conventional printing methods utilizing biological inks.
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Citations
22 Claims
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1. A disposable, enzymatic assay based test strip device for colorimetric detection of an analyte compound in a body liquid sample, comprising:
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a base support; a substrate material disposed on said base support and defining a number of reactive test zones and a reactive control zone; and a compound buffer comprising a chemical compound same or equivalent to the analyte compound and bearing a functional group characteristic to the analyte compound, wherein each reactive test zone is configured to develop a visual indication when the concentration of the analyte compound in the body liquid sample exceeds a predetermined limit and the reactive control zone is configured to develop a visual indication upon being supplied with the body liquid sample, wherein the substrate material defining each reactive test zone and the reactive control zone is deposited with a biological ink composition comprising at least one enzyme and a chromogen, said biological ink composition being identical in each reactive test zone and the reactive control test zone; and wherein the substrate material defining the reactive control zone is further disposed with the compound buffer configured to reside within the substrate material defining the reactive control zone such, that the buffer compound is prevented from admixing with the biological ink composition in the reactive control zone until the substrate material, defining said reactive control zone is supplied with the body liquid sample, thereupon the visual indication is developed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification