Reduced volume electrochemical sensor
First Claim
1. An electrochemical glucose sensor comprising:
- a base substrate;
a conductive layer disposed on said base substrate, and wherein said conductive layer comprises a reference electrode and at least two working electrodes;
an insulation layer disposed on at least a part of said conductive layer such that the insulation layer is in contact with each of the two working electrodes to define spaced apart edges of an area which can be wetted by a liquid sample;
a reagent layer disposed on said working electrodes and on at least a part of said reference electrode;
an adhesive layer disposed on a portion of said reagent layer and conductive layer such that said adhesive layer is in contact with said portion to define spaced apart edges of an area over said reference electrode and reagent layer which can be wetted by a liquid sample.
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Accused Products
Abstract
An electrochemical glucose sensor comprising a base substrate, a conductive layer disposed on said base substrate, where said conductive layer comprises a reference electrode and at least two working electrodes; an insulation layer disposed on a part of said conductive layer, a reagent layer disposed on said working electrodes and on at least a part of said reference electrode, an adhesive layer disposed on a portion of said reagent layer and conductive layer wherein said adhesive layer substantially defines an area of said reference electrode which can be wetted by a liquid sample and said insulation layer substantially defines an area of said working electrodes which can be wetted by a liquid sample.
124 Citations
9 Claims
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1. An electrochemical glucose sensor comprising:
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a base substrate; a conductive layer disposed on said base substrate, and wherein said conductive layer comprises a reference electrode and at least two working electrodes; an insulation layer disposed on at least a part of said conductive layer such that the insulation layer is in contact with each of the two working electrodes to define spaced apart edges of an area which can be wetted by a liquid sample; a reagent layer disposed on said working electrodes and on at least a part of said reference electrode; an adhesive layer disposed on a portion of said reagent layer and conductive layer such that said adhesive layer is in contact with said portion to define spaced apart edges of an area over said reference electrode and reagent layer which can be wetted by a liquid sample. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An electrochemical sensor comprising:
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a substrate; a reference electrode disposed on the substrate; at least one working electrode disposed on the substrate proximate the reference electrode; an insulation member disposed over the reference electrode and at least one working electrode, the insulation member having a aperture so that a portion of each the reference electrode and the at least one working electrode are exposed to receive a reagent, the aperture being in contact with the at least one working electrode to define a working electrode width as measured between two spaced apart edges of the aperture; a reagent layer disposed over the portion of each of the reference electrode and the at least one working electrode to define a coated area of the reference electrode and a coated area of the at least one working electrode; and an adhesive layer disposed over a portion of the insulation layer and over a portion of the coated area of the reference electrode to define a reference electrode width as measured between two spaced apart edges of the adhesive layer such that the reference electrode width as measured between the spaced apart edges of the adhesive layer is greater than the working electrode width as measured between the spaced apart edges of the aperture. - View Dependent Claims (8, 9)
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Specification