Electrochemical sensors and a method for their manufacture
First Claim
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1. An electrochemical module, comprising:
- a first substrate having a first conductive layer thereon and forming a first substrate-conductive layer assembly wherein the first substrate-conductive layer assembly has a first width and a first length;
a second substrate having a second conductive layer thereon and forming a second substrate-conductive layer assembly wherein the second substrate-conductive layer assembly has a second width that is less than the first width and a second length that is substantially the same as the first length, wherein the first and second conductive layers are in a facing relationship;
a first and a second spacer disposed between the first substrate-conductive layer assembly and second substrate-conductive layer assembly and maintaining the first substrate-conductive layer assembly and second substrate-conductive layer assembly in a spaced apart relationship, the first and second spacers extending along the first length;
a chamber formed between the first substrate-conductive layer assembly and second substrate-conductive layer assembly and configured to receive a fluid sample, the chamber comprising a first sidewall defined by a second latitudinal end of the first spacer and a second sidewall defined by a first latitudinal end of the second spacer, wherein the chamber comprises a reagent capable of reacting with an analyte in the fluid sample; and
a third spacer adjacent to and in physical contact with the second latitudinal end, opposite the first latitudinal end, of the second spacer, a surface of the third spacer comprising a conductive layer that is in a facing relationship and in electrically conductive contact with the second conductive layer, the third spacer extending along the first length.
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Abstract
The invention provides electrochemical-based modules useful for the determination of an analyte in a bodily fluid sample. The modules of the invention provide opposed electrodes, but the contact areas for making electrical contact between the electrodes and the analyte measurement device are coplanar.
28 Citations
16 Claims
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1. An electrochemical module, comprising:
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a first substrate having a first conductive layer thereon and forming a first substrate-conductive layer assembly wherein the first substrate-conductive layer assembly has a first width and a first length; a second substrate having a second conductive layer thereon and forming a second substrate-conductive layer assembly wherein the second substrate-conductive layer assembly has a second width that is less than the first width and a second length that is substantially the same as the first length, wherein the first and second conductive layers are in a facing relationship; a first and a second spacer disposed between the first substrate-conductive layer assembly and second substrate-conductive layer assembly and maintaining the first substrate-conductive layer assembly and second substrate-conductive layer assembly in a spaced apart relationship, the first and second spacers extending along the first length; a chamber formed between the first substrate-conductive layer assembly and second substrate-conductive layer assembly and configured to receive a fluid sample, the chamber comprising a first sidewall defined by a second latitudinal end of the first spacer and a second sidewall defined by a first latitudinal end of the second spacer, wherein the chamber comprises a reagent capable of reacting with an analyte in the fluid sample; and a third spacer adjacent to and in physical contact with the second latitudinal end, opposite the first latitudinal end, of the second spacer, a surface of the third spacer comprising a conductive layer that is in a facing relationship and in electrically conductive contact with the second conductive layer, the third spacer extending along the first length. - View Dependent Claims (2, 3, 4, 5, 6, 7, 15)
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8. An electrochemical module, comprising:
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a first substrate having a first conductive layer thereon, the first conductive layer comprising a first and second portion having a gap therebetween, the first substrate and first conductive layer forming a first substrate-conductive layer assembly wherein the first substrate-conductive layer assembly has a first width and a first length; a second substrate having a second conductive layer thereon and forming a second substrate-conductive layer assembly wherein the second substrate-conductive layer assembly has a second width that is less than the first width and a second length that is substantially the same as the first length, wherein the first and second conductive layers are in a facing relationship; a first and a second spacer disposed between the first substrate-conductive layer assembly and second substrate-conductive layer assembly and maintaining the first substrate-conductive layer assembly and second substrate-conductive layer assembly in a spaced apart relationship, the first and second spacers extending along the first length; a chamber formed between the first substrate-conductive layer assembly and second substrate-conductive layer assembly and configured to receive a fluid sample, the chamber comprising a first sidewall defined by a second latitudinal end of the first spacer and a second sidewall defined by a first latitudinal end of the second spacer, wherein the chamber comprises a reagent capable of reacting with an analyte in the fluid sample; and an electrically conductive third spacer adjacent to the second latitudinal end, opposite the first latitudinal end, of the second spacer, wherein the third spacer is in contact with at least a portion of the gap and in electrically conductive contact with the first and second conductive layers, the third spacer extending along the first length. - View Dependent Claims (9, 10, 11, 12, 13, 14, 16)
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Specification