ANALYTE TEST STRIP WITH COMBINATION ELECTRODE CONTACT AND METER IDENTIFICATION FEATURE

• US 20100326824A1
• Filed: 06/24/2009
• Published: 12/30/2010
• Est. Priority Date: 06/24/2009
• Status: Abandoned Application

• Current Assignee: Lifescan Incorporated (Duv Holding Corporation)
• Original Assignee: Lifescan Incorporated (Duv Holding Corporation)
• Inventors: LEONG, Koon-wah
• Application Number:
  US12/490,952
• Publication Number:
  US 20100326824A1
• Time in Patent Office: Days
• US Class Current: 204/406
• CPC Class Codes: C12Q 1/006 for glucose
• CPC Class Codes: G01N 27/3272 Test elements therefor, i.e. disposable laminated substrates with electrodes, reagent and channels optical biosensors G01N33/52
• CPC Class Codes: G01N 33/48771 Coding of information, e.g. calibration data, lot number

Abstract

An analyte test strip (e.g., an electrochemical-based analyte test strip for determining glucose in a bodily fluid sample) for use with a test meter includes a first insulating layer and a electrically conductive layer disposed on the first insulating layer. The electrically conductive layer includes at least one electrode portion and at least one electrical contact pad configured for an electrical connector pin of a test meter to travel therealong during insertion of the analyte test strip into the test meter. In addition, the electrical contact pad is in electrical communication with the electrode portion. The analyte test strip also includes at least one meter identification feature (such as stripes of visually transparent material) disposed on the electrical contact pad such that the electrical connector pin of the test meter travels across the meter identification feature during insertion of the analyte test strip into the test meter. The analyte test strip further includes a second insulating layer disposed above the first insulating layer and a patterned spacer layer positioned between the first insulating layer and the electrically conductive layer that defines a sample-receiving chamber therein. The electrical contact pad of the analyte test strip has a predetermined contact electrical characteristic value and the meter identification feature has a predetermined identification feature electrical characteristic value that is dissimilar from the predetermined contact electrical characteristic.

Claims

1. An analyte test strip for use with a test meter, the analyte test strip comprising:

a first insulating layer;

a first electrically conductive layer disposed on the first insulating layer, the first electrically conductive layer including;

at least one electrode portion; and

at least one electrical contact pad configured for an electrical connector pin of a test meter to travel therealong during insertion of the analyte test strip into the test meter, the electrical contact pad in electrical communication with the electrode portion;

at least one meter identification feature disposed on the electrical contact pad such that the electrical connector pin of the test meter travels across the meter identification feature during insertion of the analyte test strip into the test meter;

a second insulating layer disposed above the first insulating layer;

a patterned spacer layer positioned between the first insulating layer and the first electrically conductive layer, the patterned spacer layer defining a sample-receiving chamber therein;

wherein the electrical contact pad has a predetermined contact electrical characteristic value and the meter identification feature has a predetermined identification feature electrical characteristic value that is dissimilar from the predetermined contact electrical characteristic.

2. The analyte test strip of claim 1 wherein the analyte test strip is configured such that an electrochemical-based signal used in analyte determination is communicated from the electrode portion to the electrical connector pin of the test meter via the electrical contact pad with the meter identification feature thereon.

3. The analyte test strip of claim 1 wherein the meter identification feature is formed of an electrically insulating material.

4. The analyte test strip of claim 1 wherein the meter identification feature is formed of a visually transparent material.

5. The analyte test strip of claim 1 wherein the meter identification feature is formed as at least one stripe across the contact pad.

6. The analyte test strip of claim 1 wherein there are two electrical contact pads;

and

wherein the analyte test strip is configured to provide a continuous conductive electrical circuit between the at least two electrical contact pads; and

wherein the meter identification feature is formed of an electrically insulating material.

7. The analyte test strip of claim 1 wherein the meter identification feature is formed as a plurality of stripes across the contact pad.

8. The analyte test strip of claim 7 wherein the identification feature electrical characteristic of each strip of the plurality of stripes are dissimilar from one another.

9. The analyte test strip of claim 1 wherein the electrical characteristic is at least one of conductivity, resistance, and capacitance.

10. The analyte test strip of claim 1 wherein the analyte test strip is an electrochemical-based analyte test strip.

11. The analyte test strip of claim 9 wherein the analyte test strip is configured for the determination of glucose.

12. The analyte test strip of claim 1 wherein the meter identification feature includes a taggent detectable by the test meter.

13. The analyte test strip of claim 12 wherein the taggent is magnetic.

14. A test meter for use with an analyte test strip, the test meter comprising:

a test strip receiving module with at least one electrical connector pin; and

a signal processing module,

wherein the electrical connector pin is configured to;

travel along an electrical contact pad of the analyte test strip during insertion of the analyte test strip into the test strip receiving module; and

travel across a meter identification feature disposed on the electrical contact pad during insertion of the analyte test strip into the test meter; and

wherein the signal processing module is configured to measure an electrical characteristic via the electrical connector pin as the electrical connector pin travels along the electrical contact pad and across the meter identification feature, and

wherein the electrical contact pad has a predetermined contact electrical characteristic value and the meter identification feature has a predetermined identification feature electrical characteristic value that is dissimilar from the predetermined contact electrical characteristic.

15. The test meter of claim 14 wherein the signal processing module is further configured to determine the concentration of an analyte is a bodily fluid sample applied to the analyte test strip based on an electrochemical-based signal communicated from an electrode portion of the analyte test strip to the electrical connector pin of the test meter via the electrical contact pad with the meter identification feature thereon.

16. The test meter of claim 14 wherein the test meter is configured such that the electrical connector pin is resiliently biased against the electrical contact pad and meter identification feature during insertion of the analyte test strip into the test strip receiving module.

17. The test meter of claim 14 the signal processing unit is configured to measure the electrical characteristic as a function of time as the electrical connector pin travels along the electrical contact pad and across the meter identification pad.

18. The test meter of claim 14 wherein the signal processing module is configured to identify the analyte test strip based on the measured electrical characteristic as a function of time.

19. The test meter of claim 14 wherein the signal processing module is configured to measure electrical continuity as the electrical characteristic.

20. The test meter of claim 14 wherein the signal processing module is configured to measure at least one of resistance, conductance and capacitance as the electrical characteristic.

21. The test meter of claim 14 wherein the signal processing module is configured to measure a magnetic characteristic of the meter identification feature as the electrical connector pin travels across the meter identification feature.