Analyte test strip with improved reagent deposition
First Claim
Patent Images
1. An analyte test strip comprising:
- a substrate having a generally planar surface that extends from a first end to a second end;
an electrically conductive material disposed on the generally planar surface to define a plurality of electrodes spaced apart from each other;
an electrically isolated island portion of the electrically conductive material disposed between at least two of the plurality of electrodes; and
a reagent layer at least partially covering the plurality of electrodes and the electrically isolated island portion.
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Abstract
An analyte, system, strip and method are described. In one example, an analyte test strip is provided that includes a substrate, electrically conductive material and an isolated portion of the electrically conductive material. The substrate has a generally planar surface that extends from a first end to a second end. The electrically conductive material is disposed on the generally planar surface to define a plurality of electrodes spaced apart from each other. The isolated portion of the electrically conductive material is disposed between at least two electrodes so that the isolated portion is not in electrical communication with the plurality of electrodes.
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Citations
19 Claims
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1. An analyte test strip comprising:
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a substrate having a generally planar surface that extends from a first end to a second end; an electrically conductive material disposed on the generally planar surface to define a plurality of electrodes spaced apart from each other; an electrically isolated island portion of the electrically conductive material disposed between at least two of the plurality of electrodes; and a reagent layer at least partially covering the plurality of electrodes and the electrically isolated island portion. - View Dependent Claims (2, 3, 4, 5)
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6. A test strip for measuring a concentration of an analyte in a fluid sample, the test strip comprising:
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a substrate; a reference electrode disposed on the substrate; a first working electrode disposed on the substrate proximate the reference electrode; a second working electrode disposed on the substrate proximate the first working electrode; a first electrically isolated island portion of electrically conductive material located proximal to one of the first and second working electrodes and distal to the reference electrode; and a reagent layer at least partially covering the reference electrode, the first working electrode, the second working electrode and the electrically isolated island portion. - View Dependent Claims (7, 8, 9, 10, 11, 12)
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13. A method of making an analyte test strip, the method comprising:
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depositing a layer of a conductive material on a substrate; removing selective portions of the layer of conductive material to define a plurality of electrodes and at least one electrically isolated island portion of the conductive material separated from any of the plurality electrodes at a distance of less than about 50 microns to electrically isolate the at least one electrically isolated island portion from the electrodes; and depositing a reagent layer at least partially covering the plurality of electrodes and the at least one electrically isolated island portion. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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Specification