Analyte Sensor with Insertion Monitor, and Methods

• US 20100126884A1
• Filed: 01/28/2010
• Published: 05/27/2010
• Est. Priority Date: 11/04/1999
• Status: Abandoned Application

• Current Assignee: Abbott Diabetes Care Incorporated (Abbott Laboratories Incorporated)
• Original Assignee: Abbott Diabetes Care Incorporated (Abbott Laboratories Incorporated)
• Inventors: Wang, Yi, Karinka, Shridhara Alva, Vivolo, Joseph A.
• Application Number:
  US12/695,913
• Publication Number:
  US 20100126884A1
• Time in Patent Office: Days
• US Class Current: 205/792
• 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: Y10S 439/909 Medical use or attached to human body

Abstract

A sensor, and methods of making, for determining the concentration of an analyte, such as glucose or lactate, in a biological fluid such as blood or serum, using techniques such as coulometry, amperometry, and potentiometry. The sensor includes a working electrode and a counter electrode, and can include an insertion monitoring trace to determine correct positioning of the sensor in a connector.

Claims

1-19. -19. (canceled)

20. An analyte test strip comprising:

a generally planar substrate;

a plurality of conductive areas disposed on the substrate to define five distinct conductive portions comprising at least five contact lands, and in which two contact lands are located in a single conductive portion.

21. The test strip of claim 20, further comprising an insulation layer, reagent layer and adhesive layer.

22. The test strip of claim 20, in which the at least five contact lands comprise six contact lands.

23. The test strip of claim 20, in which the generally planar substrate extends along a longitudinal axis to define a generally rectangular member.

24. The test strip of claim 23, further comprising first and second working electrodes and reference electrode in electrical communication with respective conductive portions.

25. The test strip of claim 23, further comprising a reagent layer proximate the first and second working electrodes, the reagent layer including an enzyme, ruthenium mediator and a buffer.

26. The test strip of claim 25, in which the enzyme comprises an enzyme selected from a group consisting essentially of glucose oxidase, glucose dehydrogenase, or combinations thereof.

27. An analyte measurement system comprising:

a housing including a connector module disposed in the housing, the connector module including a plurality of spaced apart contact leads disposed in the connector module; and

a test strip comprising a generally planar substrate, the test strip including a plurality of conductive areas disposed on the substrate to define five distinct conductive portions comprising at least five contact lands, and in which two contact lands are located in a single conductive portions so that the plurality of spaced apart contact leads engages respective contact lands when the substrate is inserted into the connector module.

28. The system of claim 27, in which the generally planar substrate extends along a longitudinal axis to define a generally rectangular member.

29. The system of claim 28, further comprising first and second working electrodes and reference electrode in electrical communication with respective conductive portions.

30. The system of claim 27, in which the connector module comprises first and second members with the plurality of contact leads located proximate the first and second members.

31. A method of operating a test measurement device, the method comprising:

providing a measurement device having six contact leads;

designating two contact leads as strip detection contact leads; and

locating four contact lands as respective vertices of a polygon on a substrate with two contact lands that are in substantial alignment with the strip detection contact leads when the substrate is inserted into the measurement device.

32. The method of claim 31, further comprising turning on the measurement device via a connection between the strip detection contact leads and the contact lands.

33. The method of claim 31, in which the locating comprises forming an electrical connection between the two contact lands.