Underfill Management System for a Biosensor
First Claim
1. A method for determining an analyte concentration in a sample, comprising:
- determining a fill state of a test sensor;
signaling for the addition of additional sample to substantially full-fill the test sensor;
applying an analytic test excitation signal to the sample;
generating at least one analytic output signal value responsive to the concentration of the analyte in the sample and the analytic test excitation signal;
compensating underfill error in the at least one analytic output signal value in response to the fill state of the test sensor; and
determining an analyte concentration in the sample from the at least one output signal value and the compensating.
2 Assignments
0 Petitions
Accused Products
Abstract
A biosensor system including the underfill management system determines the analyte concentration in a sample from the at least one analytic output signal value. The underfill management system includes an underfill recognition system and an underfill compensation system. The underfill recognition system determines whether the test sensor initially is substantially full-filled or underfilled, indicates when the sample volume is underfilled so that additional sample may be added to the test sensor, and starts or stops the sample analysis in response to the sample volume. The underfill recognition system also may determine the initial degree of underfill. After the underfill recognition system determines the initial fill state of the test sensor, the underfill compensation system compensates the analysis based on the initial fill state of the test sensor to improve the measurement performance of the biosensor system for initially underfilled test sensors.
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Citations
26 Claims
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1. A method for determining an analyte concentration in a sample, comprising:
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determining a fill state of a test sensor; signaling for the addition of additional sample to substantially full-fill the test sensor; applying an analytic test excitation signal to the sample; generating at least one analytic output signal value responsive to the concentration of the analyte in the sample and the analytic test excitation signal; compensating underfill error in the at least one analytic output signal value in response to the fill state of the test sensor; and determining an analyte concentration in the sample from the at least one output signal value and the compensating. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method for determining an analyte concentration in a sample, comprising:
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applying a regular polling sequence and an extended polling sequence to the sample, the extended polling sequence including at least one different extended input pulse; generating at least one analytic output signal responsive to the concentration of the analyte in the sample; selecting an error parameter responsive to the at least one different extended input pulse; determining at least one index function responsive to the error parameter; and determining the analyte concentration in the sample from the at least one analytic output signal and a slope compensation equation responsive to the at least one index function, where the slope compensation equation includes at least one reference correlation and at least one slope deviation.
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21-24. -24. (canceled)
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25. A method for determining an analyte concentration in a sample, comprising:
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sequentially detecting sample filling of a test sensor, where the sequentially detecting includes determining when two different pairs of electrodes of the test sensor are contacted by the sample; generating at least one analytic output signal responsive to the concentration of the analyte in the sample; selecting an error parameter responsive to when the two different pairs of electrodes of the test sensor are contacted by the sample; determining at least one index function responsive to the error parameter; and determining the analyte concentration in the sample from the at least one analytic output signal and a slope compensation equation responsive to the at least one index function, where the slope compensation equation includes at least one reference correlation and at least one slope deviation.
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26-29. -29. (canceled)
Specification