System and method for determining an abused sensor during analyte measurement
First Claim
Patent Images
1. A method of detecting whether a disposable, dry reagent, electrochemical test strip is unsuitable for use in testing for analyte in a fluid sample, comprising:
- applying a signal to the test strip before dosing the test strip, the test strip including a pair of measurement electrodes and a dry reagent, the signal comprising multiple frequencies and being applied between the measurement electrodes of the test strip;
calculating an impedance value between the electrodes;
comparing the impedance value against a threshold; and
performing one action if the comparison indicates that the test strip is unsuitable for use in testing for analyte, and performing a different action if the comparison does not indicate that the test strip is unsuitable for use in testing for analyte.
5 Assignments
0 Petitions
Accused Products
Abstract
A method of measuring an analyte in a biological fluid comprises applying an excitation signal having a DC component and an AC component. The AC and DC responses are measured; a corrected DC response is determined using the AC response; and a concentration of the analyte is determined based upon the corrected DC response. Other methods and devices are disclosed.
66 Citations
13 Claims
-
1. A method of detecting whether a disposable, dry reagent, electrochemical test strip is unsuitable for use in testing for analyte in a fluid sample, comprising:
-
applying a signal to the test strip before dosing the test strip, the test strip including a pair of measurement electrodes and a dry reagent, the signal comprising multiple frequencies and being applied between the measurement electrodes of the test strip; calculating an impedance value between the electrodes; comparing the impedance value against a threshold; and performing one action if the comparison indicates that the test strip is unsuitable for use in testing for analyte, and performing a different action if the comparison does not indicate that the test strip is unsuitable for use in testing for analyte. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. A program for detecting whether a disposable, dry reagent, electrochemical test strip is unsuitable for use in testing for analyte in a fluid sample, comprising a computer usable media including at least one computer program embedded therein that is capable of causing at least one computer to perform:
-
applying a signal to the test strip before dosing the test strip, the test strip including a pair of measurement electrodes and a dry reagent, the signal comprising multiple frequencies and being applied between the measurement electrodes of the test strip; calculating an impedance value; comparing the impedance value against a threshold; and performing one action if the comparison indicates the test strip is unsuitable for use in testing for analyte, and performing a different action if the comparison does not indicate that the test strip is unsuitable for use in testing for analyte. - View Dependent Claims (8, 9, 10)
-
-
11. A method for determining if a disposable, dry reagent, electrochemical test strip adapted for determining a concentration of a medically significant component of a biological fluid is unsuitable for use in testing for the component, comprising the steps of:
-
a) applying a signal to the test strip before dosing the test strip, the test strip including a pair of measurement electrodes and a dry reagent, the signal comprising multiple frequencies and being applied between the measurement electrodes of the test strip; b) measuring a response to the signal; and c) using the response to determine if the test strip is unsuitable for use in testing for the component. - View Dependent Claims (12, 13)
-
Specification