CA2594417A1 - Novel electrode design for biosensor - Google Patents

Novel electrode design for biosensor Download PDF

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Publication number
CA2594417A1
CA2594417A1 CA002594417A CA2594417A CA2594417A1 CA 2594417 A1 CA2594417 A1 CA 2594417A1 CA 002594417 A CA002594417 A CA 002594417A CA 2594417 A CA2594417 A CA 2594417A CA 2594417 A1 CA2594417 A1 CA 2594417A1
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CA
Canada
Prior art keywords
test strip
point
electrode
distance
conductive trace
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002594417A
Other languages
French (fr)
Other versions
CA2594417C (en
Inventor
Randall K. Riggles
Abner D. Joseph
Tom Funke
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F Hoffmann La Roche AG
Original Assignee
F. Hoffmann-La Roche Ag
Randall K. Riggles
Abner D. Joseph
Tom Funke
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by F. Hoffmann-La Roche Ag, Randall K. Riggles, Abner D. Joseph, Tom Funke filed Critical F. Hoffmann-La Roche Ag
Publication of CA2594417A1 publication Critical patent/CA2594417A1/en
Application granted granted Critical
Publication of CA2594417C publication Critical patent/CA2594417C/en
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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
    • G01N27/28—Electrolytic cell components
    • G01N27/30—Electrodes, e.g. test electrodes; Half-cells
    • G01N27/327—Biochemical electrodes, e.g. electrical or mechanical details for in vitro measurements
    • G01N27/3271—Amperometric enzyme electrodes for analytes in body fluids, e.g. glucose in blood
    • G01N27/3272—Test elements therefor, i.e. disposable laminated substrates with electrodes, reagent and channels

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.

Claims (10)

1. An electrochemical test strip powered by a power source comprising:
a first measurement electrode (814a), and a first conductive trace (826) operatively coupled to the first measurement electrode, wherein the distance between at least one point on the first conductive trace and a contact zone (22) for contacting the power source is greater than or equal to the distance between any point on said first measurement electrode and the contact zone (22) for contacting the power source.
2. The test strip of claim 1, further comprising:
a second measurement electrode (216a), and a second conductive trace (224) operatively coupled to the second measurement electrode; wherein the distance between at least one point on the second conductive trace and the contact zone (22) for contacting the power source is greater than or equal to the distance between any point on said second measurement electrode and the contact zone (22) for contacting the power source.
3. The test strip of claim 1 wherein said first measurement electrode comprises a plurality of first fingers.
4. The test strip of claim 2 wherein said second measurement electrode comprises a plurality of second fingers.
5. The test strip of claim 2, further comprising a reagent disposed on said first fingers and operative to create an electrical potential in a fluid sample that is indicative of a desired fluid quality to be measured by the test strip.
6. The test strip of claim 3, further comprising a reagent disposed on said second fingers and operative to create an electrical potential in a fluid sample that is indicative of a desired fluid quality to be measured by the test strip.
7. The test strip of claim 1, wherein the at least one point on the first conductive trace is a point (1206) where the first conductive trace intersects the first measurement electrode.
8. The test strip of claim 2, wherein the at least one point on the second conductive trace is a point (1208) where the second conductive trace intersects the second measurement electrode.
9. An electrochemical test strip powered by a power source comprising a working electrode (814a); and a working sense line (826) operatively coupled to the working electrode, said working sense line intersects the working electrode in a point (1206), wherein the distance between said point (1206) and a contact zone (22) for contacting the power source on the test strip is greater than or equal to the distance between any point on the portion of the working electrode and the contact zone (22).
10. The test strip of claim 8, further comprising:
a counter electrode (216a); and a counter sense line (224) operatively coupled to the counter electrode;
Said counter sense line intersects the counter electrode in a point (1208), wherein the distance between said point (1208) and a contact zone(22) on the test strip is greater than or equal to the distance between any point on the portion of the counter electrode and the contact zone.
CA2594417A 2005-01-12 2006-01-12 Novel electrode design for biosensor Active CA2594417C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US11/033,704 US7556723B2 (en) 2004-06-18 2005-01-12 Electrode design for biosensor
US11/033,704 2005-01-12
PCT/EP2006/000222 WO2006074927A1 (en) 2005-01-12 2006-01-12 Novel electrode design for biosensor

Publications (2)

Publication Number Publication Date
CA2594417A1 true CA2594417A1 (en) 2006-07-20
CA2594417C CA2594417C (en) 2011-04-12

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CA2594417A Active CA2594417C (en) 2005-01-12 2006-01-12 Novel electrode design for biosensor

Country Status (9)

Country Link
US (1) US7556723B2 (en)
EP (1) EP1846761B1 (en)
JP (1) JP4827855B2 (en)
CN (1) CN101103271B (en)
CA (1) CA2594417C (en)
ES (1) ES2644041T3 (en)
HK (1) HK1115440A1 (en)
PL (1) PL1846761T3 (en)
WO (1) WO2006074927A1 (en)

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CN101103271A (en) 2008-01-09
EP1846761A1 (en) 2007-10-24
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WO2006074927A8 (en) 2007-08-23
CN101103271B (en) 2011-11-16
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WO2006074927A1 (en) 2006-07-20
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JP4827855B2 (en) 2011-11-30
US20050284758A1 (en) 2005-12-29

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