Analyte sensors and methods of use

• US 8,753,470 B2
• Filed: 05/29/2012
• Issued: 06/17/2014
• Est. Priority Date: 12/22/2006
• Status: Active Grant

• Current Assignee: Abbott Diabetes Care Incorporated (Abbott Laboratories Incorporated)
• Original Assignee: Abbott Diabetes Care Incorporated (Abbott Laboratories Incorporated)
• Inventors: Wang, Yi
• Primary Examiner(s): LARKIN, DANIEL SEAN
• Application Number:
  US13/482,675
• Publication Number:
  US 20120234487A1
• Time in Patent Office: 749 Days
• Field of Search: 156/250, 156/268, 156/269, 204/403.01, 204/403.04, 204/403.1, 204/403.14, 422/82.01, 422/412, 73/614.1
• US Class Current: 156/268
• CPC Class Codes: B01L 2200/027 for microfluidic devices
• CPC Class Codes: B01L 2300/0645 Electrodes
• CPC Class Codes: B01L 2300/0825 Test strips
• CPC Class Codes: B01L 2300/0887 Laminated structure
• CPC Class Codes: B01L 3/502715 characterised by interfacing components, e.g. fluidic, electrical, optical or mechanical interfaces
• CPC Class Codes: C12Q 1/005 involving specific analytes or enzymes including groups of enzymes, e.g. oxydases; C12Q1/004 takes precedence
• 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 27/416 Systems G01N27/27 takes precedence
• CPC Class Codes: Y10T 156/1082 Partial cutting bonded sandwich [e.g., grooving or incising]

Abstract

Analyte sensors for determining the concentration of an analyte in a sample. The sensors have a sample chamber having an inlet with a projection extending from an edge of the sensor for facilitating flow of sample into the sample chamber.

Claims

1. A method of manufacturing a test strip, comprising:

assembling said test strip having a test area including a test chemistry, said test area configured to collect a body fluid sample via capillary action and analyze said body fluid sample, said test area comprising an inlet having a width, said test area bound by a spacer layer on at least two sides; and

forming a first skin contacting tab and a second skin contacting tab after said assembling,

wherein the first and second skin contacting tabs are projections extending from a first edge of the test strip, wherein the first and second skin contacting tabs are proximate the inlet and have a width that is less than the inlet width.

2. The method of claim 1, wherein said assembling includes:

disposing said test chemistry onto either a first panel or a second panel; and

laminating said first panel to said second panel.

3. The method of claim 1, wherein said forming includes punching through the test strip.

4. The method of claim 1, wherein said forming includes punching through said test area.

5. The method of claim 1, wherein the width of the first and second skin contacting tabs is no more than about 80% of the inlet width.

6. The method of claim 1, wherein the first edge is a side edge of the test strip.

7. The method of claim 1, wherein the first edge is an end edge of the test strip.

8. The method of claim 1, wherein the test area includes only two inlets:

a first inlet and a second inlet.

9. The method of claim 8, wherein the first and second skin contacting tabs are proximate the first inlet.

10. The method of claim 9, wherein the test strip comprises a third skin contacting tab and a fourth skin contacting tab, the third and fourth skin contacting tabs extending from a second edge of the test strip and wherein the third and fourth skin contacting tabs are proximate the second inlet.

11. The method of claim 9, wherein the first and second skin contacting tabs are located at the first inlet and the test strip comprises a third skin contacting tab and a fourth skin contacting tab, the third and fourth skin contacting tabs extending from a second edge of the test strip and wherein the third and fourth skin contacting tabs are located at the second inlet.

12. The method of claim 8, wherein the first and second skin contacting tabs are proximate the second inlet.

13. The method of claim 1, wherein said forming includes punching through the spacer layer.

14. A method of manufacturing a plurality of test strips, comprising:

providing a first panel and a second panel wherein each of said first panel and said second panel includes a continuous sheet of material;

disposing a test chemistry onto either said first panel or said second panel;

assembling said first panel with said second panel and a spacer layer;

forming a plurality of test strips after said assembling; and

forming a first skin contacting tab and a second skin contacting tab for each of said plurality of test strips,

wherein each of said plurality of test strips include a test area comprising said test chemistry and an inlet having a width, said test area bound by the spacer layer on at least two sides,

wherein the first and second skin contacting tabs are projections extending from a first edge of each of said plurality of test strips and wherein the first and second skin contacting tabs are proximate the inlet and have a width that is less than the inlet width.

15. The method of claim 14, wherein said forming includes punching through said test area.

16. The method of claim 14, wherein the first edge is a side edge of the test strip.

17. The method of claim 14, wherein the first edge is an end edge of the test strip.

18. The method of claim 14, wherein the test area includes only two inlets:

a first inlet and a second inlet.

19. The method of claim 18, wherein the first and second skin contacting tabs are proximate the first inlet.

20. The method of claim 19, wherein the test strip comprises a third skin contacting tab and a fourth skin contacting tab, the third and fourth skin contacting tabs extending from a second edge of the test strip and wherein the third and fourth skin contacting tabs are proximate the second inlet.

21. The method of claim 19, wherein the first and second skin contacting tabs are located at the first inlet and the test strip comprises a third skin contacting tab and a fourth skin contacting tab, the third and fourth skin contacting tabs extending from a second edge of the test strip and wherein the third and fourth skin contacting tabs are located at the second inlet.

22. The method of claim 18, wherein the first and second skin contacting tabs are proximate the second inlet.

23. The method of claim 14, wherein said forming includes punching through the spacer layer.

24. A method of manufacturing a test strip, comprising:

assembling said test strip having a test area including a test chemistry, said test area configured to collect a body fluid sample via capillary action and analyze said body fluid sample, said test area comprising only two inlets;

a first inlet and a second inlet, said test area bound by a spacer layer on at least two sides; and

forming a first skin contacting tab and a second skin contacting tab after said assembling,

wherein the first and second skin contacting tabs are projections extending from a first edge or a second edge of the test strip and wherein the first and second skin contacting tabs are proximate the first or the second inlet.

25. The method of claim 24, wherein the first and second skin contacting tabs are projections extending from a first edge of the test strip and are proximate the first inlet, wherein the test strip comprises a third skin contacting tab and a fourth skin contacting tab, the third and fourth skin contacting tabs extending from a second edge of the test strip and wherein the third and fourth skin contacting tabs are proximate the second inlet.

26. The method of claim 24, wherein the first and the second inlets comprise a width, wherein width of the first and second skin contacting tabs is less than the width of the first and the second inlets.

27. The method of claim 24, wherein said forming includes punching through the spacer layer.