Electrochemical strip for use with a multi-input meter

• US 20090302872A1
• Filed: 08/21/2009
• Published: 12/10/2009
• Est. Priority Date: 09/05/2007
• Status: Abandoned Application

• Current Assignee: LifeScan Scotland Limited (Johnson & Johnson)
• Original Assignee: LifeScan Scotland Limited (Johnson & Johnson)
• Inventors: Baskeyfield, Damian Edward Haydon, Haggett, Barry, Andres, Roberto, Birch, Brian
• Application Number:
  US12/447,482
• Publication Number:
  US 20090302872A1
• Time in Patent Office: Days
• US Class Current: 324/715
• 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: Y10T 29/49117 Conductor or circuit manufacturing

Abstract

Strips, particularly test strips and adapters for test strips, for use in meters for the electrochemical measurement of analyte in a sample material and in particular the glucose concentration of a sample of blood. The strips comprise a plurality of working connectors, for interfacing with the meter, coupled to one or more working electrodes. The strips are of particular use in adapting multi-input meters for single input use.

Claims

1. A strip for use with a multi-input meter for the electrochemical measurement of analyte in a sample material, the strip comprising:

a reference electrode;

at least one working electrode;

a reference connector and a plurality of working connectors for interfacing the strip to the meter;

a reference link electrically coupling the reference electrode to the reference connector; and

at least one working link electrically coupling the at least one working electrode to the plurality of working connectors.

2. The strip of claim 1, having a plurality of working links each coupled to each of the at least one working electrode.

3. The strip of claim 1, having a plurality of working links wherein at least one working electrode is coupled to a plurality of the working connectors.

5. The strip of claim 1, wherein:

the strip is an adapter for connection between the meter and an electrochemical test strip comprising reference and working connectors; and

in use, the reference and working electrodes mate with the reference and working connectors of the test strip.

6. The strip of claim 1, wherein the at least one of the working electrodes is coupled to all of the working connectors.

11. The strip of claim 1, wherein one or more of the plurality of working links have an overlay material over at least a portion of the one or more of the plurality of working links which decreases the electrical resistance of the one or more of the plurality of working links.

14. The strip of claim 1, wherein a plurality of the working electrodes are overlaid with an overlay material, the overlay material electrically intercoupling the overlaid working electrodes.

16. The strip of claim 14, wherein the overlay material only partially covers the working surfaces of the overlaid working electrodes.

17. The strip of claim 14, wherein the overlay material substantially covers gaps located between adjacent overlaid working electrodes.

20. The strip of claim 14, wherein the overlay material is a carbon ink.

21. The strip of claim 1, wherein:

at least one of the plurality of working links is a split link, the split link comprising a first link portion and a second link portion;

the first link portion has a first resistance and is formed of material having a first resistivity;

the second link portion has a second resistance and is formed of material having a second resistivity.

26. The strip of claim 21, wherein the split link further comprising a third link portion, wherein:

the first and third link portions are separated by a gap; and

the second portion at least partially overlays each of the first and third link portions such that the gap is bridged, electrically intercoupling the first and third link portions.

30. The strip of claim 21, wherein a plurality of the working links are split links.

31. The strip of claim 30, wherein all of the plurality of split links have the same first resistivities.

32. The strip of claim 30, wherein all of the plurality of split links have the same second resistivities.

34. The strip of claim 30, wherein all of the plurality of split links have the same first resistivities.

35. The strip of claim 30, wherein all of the plurality of split links have the same second resistivities.

36. The strip of claim 30, wherein not all of the plurality of split links have the same second resistivities.

37. The strip of claim 21, wherein:

a plurality of split links couple at least one working electrode to a plurality of working connectors via a junction; and

the second link portions of the split links are located between the junction and the working connectors.

38. The strip of claim 1, further comprising:

at least one counter electrode;

a counter connector for interfacing each counter electrode to the meter; and

a counter link electrically coupling the reference electrode to the counter connector.

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39-72. -72. (canceled)

73. An electrochemical test strip comprising:

a substrate;

at least three electrical connectors disposed on the substrate; and

a working electrode and a reference electrode disposed on the substrate, the reference electrode being coupled to one of the at least three connectors and the working electrode being coupled to at least two connectors of the at least three connectors.

74-76. -76. (canceled)