Electrode design for biosensor
First Claim
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1. An electrochemical test strip powered by a power source comprising:
- a contact zone adapted to be contacted by the power source;
a first measurement electrode;
a first conductive trace operatively coupled to the first measurement electrode and to the contact zone, wherein the distance between at least one point on the first conductive trace and the contact zone is greater than or equal to the distance between any point on said first measurement electrode and the contact zone;
a second conductive trace operatively coupled to the first measurement electrode and to the contact zone;
a second measurement electrode;
a third conductive trace operatively coupled to the second measurement electrode;
wherein the distance between at least one point on the third conductive trace and the contact zone is greater than or equal to the distance between any point on said second measurement electrode and the contact zone; and
a fourth conductive trace operatively coupled to the second measurement electrode and to the contact zone.
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Abstract
A test strip for measuring a signal of interest in a biological fluid when the test strip is mated to an appropriate test meter, wherein the test strip and the test meter include structures to verify the integrity of the test strip traces, to measure the parasitic resistance of the test strip traces, and to provide compensation in the voltage applied to the test strip to account for parasitic resistive losses in the test strip traces. In addition, conductive traces are positioned to ensure structural interrogation of all electrodes and traces present upon the test strip.
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Citations
19 Claims
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1. An electrochemical test strip powered by a power source comprising:
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a contact zone adapted to be contacted by the power source; a first measurement electrode; a first conductive trace operatively coupled to the first measurement electrode and to the contact zone, wherein the distance between at least one point on the first conductive trace and the contact zone is greater than or equal to the distance between any point on said first measurement electrode and the contact zone; a second conductive trace operatively coupled to the first measurement electrode and to the contact zone; a second measurement electrode; a third conductive trace operatively coupled to the second measurement electrode;
wherein the distance between at least one point on the third conductive trace and the contact zone is greater than or equal to the distance between any point on said second measurement electrode and the contact zone; anda fourth conductive trace operatively coupled to the second measurement electrode and to the contact zone. - View Dependent Claims (2, 3, 4, 5)
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6. An electrochemical test strip powered by a power source comprising:
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a contact zone adapted to be contacted by the power source; a measurement electrode; a first conductive trace operatively coupled to the measurement electrode and to the contact zone, wherein the distance between at least one point on the first conductive trace and the contact zone is greater than or equal to the distance between any point on said measurement electrode and the contact zone; and a second conductive trace operatively coupled to the first measurement electrode and to the contact zone. - View Dependent Claims (7, 8, 9, 10)
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11. An electro chemical test strip powered by a power source comprising:
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a reagent disposed within a region on the test strip; a contact zone adapted to be contacted by the power source; a first measurement electrode; a first conductive trace operatively coupled to the first measurement electrode, wherein the distance between at least one point on the first conductive trace and the contact zone is greater than or equal to the distance between any point on said first measurement electrode within said region and the contact zone; a second conductive trace operatively coupled to the first measurement electrode and to the contact zone; a second measurement electrode; a third conductive trace operatively coupled to the second measurement electrode, wherein the distance between at least one point on the third conductive trace and the contact zone is greater than or equal to the distance between any point on said second measurement electrode within said region and the contact zone; and a fourth conductive trace operatively coupled to the second measurement electrode and to the contact zone. - View Dependent Claims (12, 13)
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14. An electrochemical test strip powered by a power source comprising:
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a reagent disposed within a region on the test strip; a contact zone adapted to be contacted by the power source; a measurement electrode; a first conductive trace operatively coupled to the measurement electrode and to the contact zone, wherein the distance between at least one point on the first conductive trace and the contact zone is greater than or equal to the distance between any point on said measurement electrode within said region and the contact zone; and a second conductive trace operatively coupled to the measurement electrode and to the contact zone. - View Dependent Claims (15, 16, 17)
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18. An electrochemical test strip powered by a power source comprising:
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a contact zone adapted to be contacted by the power source; a working electrode; a working electrode trace operatively coupled to said working electrode and to the contact zone; and a working sense line operatively coupled to the working electrode and to the contact zone, said working sense line intersecting said working electrode at a first point; wherein the distance between said first point and said contact zone is greater than or equal to the distance between any point on the working electrode and the contact zone. - View Dependent Claims (19)
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Specification