Auto-calibration circuit or label and method of forming the same

• US 8,124,014 B2
• Filed: 05/27/2009
• Issued: 02/28/2012
• Est. Priority Date: 06/09/2008
• Status: Active Grant

• Current Assignee: Ascensia Diabetes Care Holdings AG (PHC Holdings Corporation)
• Original Assignee: Bayer Healthcare LLC (Bayer AG)
• Inventors: Charlton, Steven C., Perry, Joseph E.
• Primary Examiner(s): Warden, Jill
• Assistant Examiner(s): COLE, MONIQUE T
• Application Number:
  US12/473,187
• Publication Number:
  US 20090301166A1
• Time in Patent Office: 1,007 Days
• Field of Search: 422/64, 422/62, 422/63, 422/65
• US Class Current: 422/64
• CPC Class Codes: A61B 2562/0295 Strip shaped analyte sensors for apparatus classified in A61B5/145 or A61B5/157 disposable multilayered or laminated electrodes G01N27/307; details of handling chemical test elements G01N33/4875
• CPC Class Codes: A61B 2562/085 combined with means for recording calibration data
• CPC Class Codes: A61B 5/14532 for measuring glucose, e.g. by tissue impedance measurement
• CPC Class Codes: A61B 5/1486 using enzyme electrodes, e.g. with immobilised oxidase
• CPC Class Codes: A61B 5/1495 Calibrating or testing of in-vivo probes
• CPC Class Codes: G01N 33/48771 Coding of information, e.g. calibration data, lot number

Abstract

An auto-calibration circuit or label is adapted to be used with an instrument. The instrument is adapted to determine information related to an analyte of a fluid sample. The auto-calibration circuit or label comprises a plurality of electrical connections, first and second common connections, and first and second auxiliary common connections. The electrical connections convey auto-calibration information corresponding to a test sensor. The auto-calibration information is adapted to be utilized by the instrument to auto-calibrate for the test sensor. The electrical connections include first contact areas. The second common connection is separate and distinct from the first common connection. The first auxiliary common connection is separate and distinct from the first and second common connections. The second auxiliary common connection is separate and distinct from the first and second common connections. The first and second auxiliary common connections are located on opposing sides of the contact areas. The electrical connections are adapted to be routed directly from each of the plurality of first contact areas to a respective first or a second common connection.

Claims

1. An auto-calibration circuit or label being adapted to be used with an instrument, the instrument being adapted to determine information related to an analyte of a fluid sample, the auto-calibration circuit or label comprising:

a plurality of electrical connections conveying auto-calibration information corresponding to a test sensor, the auto-calibration information being adapted to be utilized by the instrument to auto-calibrate for the test sensor, the plurality of electrical connections including a plurality of first contact areas;

a first common connection;

a second common connection being separate and distinct from the first common connection;

a first auxiliary common connection being separate and distinct from the first and second common connections; and

a second auxiliary common connection being separate and distinct from the first and second common connections, the first and second auxiliary common connections being located on opposing sides of the plurality of contact areas,

wherein the plurality of electrical connections is adapted to be routed directly from each of the plurality of first contact areas to a respective first common connection or a second common connection.

2. The circuit or label of claim 1, wherein a first one of the plurality of first contact areas is routed directly to the first common connection and a second one of the plurality of first contact areas is routed directly to the second common connection.

3. The circuit or label of claim 1, wherein at least one of the plurality of first contact areas is not routed to either the first common connection or the second common connection.

4. The circuit or label of claim 3, wherein at least two of the plurality of first contact areas are not routed to either the first common connection or the second common connection.

5. The circuit or label of claim 3, further including a second contact area, the second contact area being adapted to be electrically connected to one of the plurality of first contact areas that is not routed to either the first common connection or the second common connection.

6. The circuit or label of claim 3, further including a second contact area, the second contact area being adapted to be electrically connected to the first common connection, the second common connection, or at least one of the plurality of first contact areas that is not electrically connected to the first common connection or the second common connection.

7. The circuit or label of claim 1, further including a second contact area, the second contact area being located in a general center of the circuit or label.

8. The circuit or label of claim 1, wherein the auto-calibration circuit or label is generally circular shaped.

9. The circuit or label of claim 1, wherein the auto-calibration circuit or label is generally polygonal shaped.

10. The circuit or label of claim 1, wherein the first common connection is an inner ring and the second common connection is an outer ring.

11. The circuit or label of claim 1, wherein at least one of the first common connection and the second common connection is continuous.

12. The circuit or label of claim 1, wherein the first auxiliary common connection is an inner ring and the second auxiliary common connection is an outer ring.

19. The circuit or label of claim 1, wherein the auto-calibration circuit or label is a single layer.

13. A test sensor adapted to determine information relating to an analyte of a fluid sample, the test sensor comprising:

a base;

a second layer in which the second layer and the base assist in forming a channel to receive the fluid sample;

an auto-calibration circuit or label located on the base or the second layer, the auto-calibration circuit or label the auto-calibration circuit or label comprising;

a plurality of electrical connections conveying auto-calibration information corresponding to a test sensor, the auto-calibration information being adapted to be utilized by the instrument to auto-calibrate for the test sensor, the plurality of electrical connections including a plurality of first contact areas;

a first common connection;

a second common connection being separate and distinct from the first common connection;

a first auxiliary common connection being separate and distinct from the first and second common connections; and

a second auxiliary common connection being separate and distinct from the first and second common connections, the first and second auxiliary common connections being located on opposing sides of the plurality of contact areas,

wherein the plurality of electrical connections is adapted to be routed directly from each of the plurality of first contact areas to a respective first common connection or a second common connection.

14. The test sensor of claim 13, wherein the second layer is a lid.

15. The test sensor of claim 13, further including a spacer, the spacer assisting with the lid and the base adapted to assist in forming a channel to receive the fluid sample.

16. The test sensor of claim 13, further including a first electrode and a second electrode.

20. The test sensor of claim 13, wherein the auto-calibration circuit or label is a single layer.

17. A sensor package adapted to be used in an instrument or meter to determine information relating to an analyte in a fluid sample, the sensor package comprising:

at least one test sensor being adapted to receive the fluid sample and being operable with the instrument; and

an auto-calibration circuit or label being located on the at least one test sensor comprising;

a plurality of electrical connections conveying auto-calibration information corresponding to a test sensor, the auto-calibration information being adapted to be utilized by the instrument to auto-calibrate for the test sensor, the plurality of electrical connections including a plurality of first contact areas;

a first common connection;

a second common connection being separate and distinct from the first common connection;

a first auxiliary common connection being separate and distinct from the first and second common connections; and

a second auxiliary common connection being separate and distinct from the first and second common connections, the first and second auxiliary common connections being located on opposing sides of the plurality of contact areas,

wherein the plurality of electrical connections is adapted to be routed directly from each of the plurality of first contact areas to a respective first common connection or a second common connection.

18. The sensor package of claim 17, further including at least one cavity containing a respective one of the at least one test sensor, the at least one cavity being arranged around the auto-calibration circuit or label.