System and method for quality assurance of a biosensor test strip
First Claim
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1. A biosensor system, comprising:
- a biosensor test strip, comprisinga first measurement electrode;
a first conductive trace operatively coupled to the first measurement electrode; and
a second conductive trace operatively coupled to the first measurement electrode;
a test meter coupled to the biosensor test strip, the test meter comprising;
a reference voltage source operably coupled to the first conductive trace;
a known resistance having a first resistor end and a second resistor end, the first resistor end being operably coupled to the second conductive trace; and
a current measurement device having an input coupled to the second resistor end;
wherein application of the reference voltage causes a current to flow through the first conductive trace, the known resistance, and the second conductive trace; and
wherein measurement of the current allows a parasitic resistance of the first and second conductive traces to be calculated.
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Abstract
The present invention provides 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.
1 Citation
4 Claims
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1. A biosensor system, comprising:
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a biosensor test strip, comprising a first measurement electrode; a first conductive trace operatively coupled to the first measurement electrode; and a second conductive trace operatively coupled to the first measurement electrode; a test meter coupled to the biosensor test strip, the test meter comprising; a reference voltage source operably coupled to the first conductive trace; a known resistance having a first resistor end and a second resistor end, the first resistor end being operably coupled to the second conductive trace; and a current measurement device having an input coupled to the second resistor end; wherein application of the reference voltage causes a current to flow through the first conductive trace, the known resistance, and the second conductive trace; and wherein measurement of the current allows a parasitic resistance of the first and second conductive traces to be calculated. - View Dependent Claims (2)
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3. A biosensor system, comprising:
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a biosensor test strip, comprising a first measurement electrode; a first conductive trace operatively coupled to the first measurement electrode; and a second conductive trace operatively coupled to the first measurement electrode; a test meter coupled to the biosensor test strip, the test meter comprising; a reference voltage source having a voltage output; a known resistance having a first resistor end and a second resistor end, the first resistor end being operably coupled to the voltage output and the second resistor end being operably coupled to the first conductive trace; and a current measurement device having an input coupled to the second conductive trace; wherein application of the reference voltage causes a current to flow through the known resistance, the first conductive trace, and the second conductive trace; and wherein measurement of the current allows a parasitic resistance of the first and second conductive traces to be calculated. - View Dependent Claims (4)
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Specification
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Current AssigneeRoche Diabetes Care Inc. (Roche Holding AG)
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Original AssigneeRoche Diagnostics Operations Incorporated (Roche Holding AG), Roche Operations Limited (Roche Holding AG)
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InventorsCelentano, Michael J., Groll, Henning, Pauley, James L., Moore, Steven K.
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Primary Examiner(s)Noguerola, Alex
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Application NumberUS13/342,268Publication NumberTime in Patent Office392 DaysField of Search204/400, 205/775, 205/778, 205/777.5, 205/792US Class Current204/401CPC Class CodesG01N 27/327 Biochemical electrodes , e....G01N 27/3273 Devices therefor, e.g. test...G01N 27/3274 Corrective measures, e.g. e...G01N 27/4163 checking the operation of, ...
