Test Strips and System for Measuring Analyte Levels in a Fluid Sample

• US 20080112852A1
• Filed: 10/31/2007
• Published: 05/15/2008
• Est. Priority Date: 04/25/2002
• Status: Abandoned Application

• Current Assignee: Nipro Diagnostics, Inc.
• Original Assignee: Nipro Diagnostics, Inc.
• Inventors: Neel, Gary T., Bell, Douglas E.
• Application Number:
  US11/930,906
• Publication Number:
  US 20080112852A1
• Time in Patent Office: Days
• US Class Current: 422/82.01
• CPC Class Codes: G01N 33/48771 Coding of information, e.g. calibration data, lot number

Abstract

A test strip for measuring an analyte level in a fluid sample includes a sample chamber configured to receive the fluid sample; a plurality of electrodes configured to produce at least one current measurement related to the analyte level in the fluid sample; and at least one information-providing connector having an intrinsic electrical property representative of at least one test strip calibration parameter specific to the test strip. A system for measuring an analyte level in a fluid sample may include such a test strip along with a data acquisition system controlled by a processor and configured to measure an intrinsic electrical property of the information-providing connector and to obtain at least one test strip calibration parameter corresponding to the test strip from at least one predetermined location in a memory based on the intrinsic electrical property.

Claims

1. Test strip for measuring an analyte level in a fluid sample, comprising:

a sample chamber configured to receive the fluid sample;

a plurality of electrodes configured to produce at least one current measurement related to the analyte level in the fluid sample; and

at least one information-providing connector having an intrinsic electrical property representative of at least one test strip calibration parameter specific to the test strip.

2. The test strip of claim 1, wherein the fluid sample is a blood sample and the analyte is blood glucose.

3. The test strip of claim 1, wherein the at least one calibration parameter includes temperature corrections.

4. The test strip of claim 1, wherein the at least one calibration parameter includes voltage parameters to be used by a meter performing measurements with the test strip.

5. The test strip of claim 1, wherein the at least one calibration parameter includes information about how many measurements should be made by a meter performing measurements with the test strip.

6. The test strip of claim 1, wherein the at least one calibration parameter includes an identifier identifying a lot of test strips to which the test strip belongs.

7. The test strip of claim 1, wherein the at least one calibration parameter includes a code identifying a brand of the test strip.

8. The test strip of claim 1, wherein the at least one calibration parameter includes a code identifying a model of meter to be used with the test strip.

9. The test strip of claim 1, wherein the at least one calibration parameter includes an expiration date of the test strip.

10. The test strip of claim 1, wherein the intrinsic electrical property is an electrical resistance.

11. A system for measuring an analyte level in a fluid sample, comprising:

a test strip including;

a sample chamber configured to receive the fluid sample;

a plurality of electrodes configured to produce at least one current measurement related to the analyte level in the fluid sample; and

at least one information-encoding connector having an intrinsic electrical property representative of at least one test strip calibration parameter specific to the test strip; and

a meter including;

a strip connector for receiving the test strip;

a processor;

a memory having a plurality of locations each configured to store at least one calibration parameter; and

a data acquisition system controlled by the processor and configured to;

measure an intrinsic electrical property of the at least one information-encoding connector;

obtain at least one test strip calibration parameter corresponding to the test strip from at least one predetermined location in the memory based on the intrinsic electrical property of the at least one information-encoding connector;

apply at least one voltage to at least one of the plurality of electrodes; and

measure the at least one current measurement related to the analyte level.

12. The system of claim 11, wherein the fluid sample is a blood sample and the analyte is blood glucose.

13. The system of claim 11, wherein the at least one calibration parameter includes temperature corrections.

14. The system of claim 11, wherein the at least one calibration parameter includes voltage parameters to be used by a meter performing measurements with the test strip.

15. The system of claim 11, wherein the at least one calibration parameter includes information about how many measurements should be made by a meter performing measurements with the test strip.

16. The system of claim 11, wherein the at least one calibration parameter includes an identifier identifying a lot of test strips to which the test strip belongs.

17. The system of claim 11, wherein the at least one calibration parameter includes a code identifying a brand of the test strip.

18. The system of claim 11, wherein the at least one calibration parameter includes a code identifying a model of meter to be used with the test strip.

19. The system of claim 11, wherein the at least one calibration parameter includes an expiration date of the test strip.

20. The system of claim 11, wherein the intrinsic electrical property is an electrical resistance.