Process for Making Electrodes for Test Sensors

• US 20090277565A1
• Filed: 12/21/2006
• Published: 11/12/2009
• Est. Priority Date: 12/27/2005
• Status: Abandoned Application

• Current Assignee: Ascensia Diabetes Care Holdings AG (PHC Holdings Corporation)
• Original Assignee: Ascensia Diabetes Care Holdings AG (PHC Holdings Corporation)
• Inventors: Edelbrock, Andrew J., Charlton, Steven C.
• Application Number:
  US12/086,364
• Publication Number:
  US 20090277565A1
• Time in Patent Office: Days
• US Class Current: 156/69
• CPC Class Codes: G01N 27/3272 Test elements therefor, i.e. disposable laminated substrates with electrodes, reagent and channels optical biosensors G01N33/52

Abstract

A method of forming a plurality of electrodes on a test sensor includes providing a substrate. The test sensor assists in determining an analyte concentration. At least one aperture is formed through the substrate. Catalytic ink or catalytic polymeric solution is applied in a pattern on two sides of the substrate. The catalytic ink or catalytic polymeric solution assists in defining the plurality of electrodes on the test sensor. After applying the catalytic ink or catalytic polymeric solution, the substrate is electrolessly plated to form the plurality of the electrodes of the substrate. The plurality of electrodes assists in determining the concentration of the analyte.

Claims

1. A method of forming a plurality of electrodes on a test sensor, the test sensor assisting in determining the concentration of an analyte, the method comprising the acts of:

providing a substrate;

forming at least one aperture through the substrate;

applying a catalytic ink or catalytic polymeric solution in a pattern on two sides of the substrate, the catalytic ink or catalytic polymeric solution assisting in defining the plurality of electrodes on the test sensor; and

after applying the catalytic ink or catalytic polymeric solution, electroless plating of the substrate to form the plurality of the electrodes of the substrate, the plurality of electrodes assisting in determining the concentration of the analyte.

4. The method of claim 1, wherein the electroless plating uses a conductive metal being copper, nickel, gold, silver, platinum, palladium, rhodium, cobalt, tin, combinations or alloys thereof.

5. The method of claim 4, wherein the thickness of the conductive metallic material is from about 1 to about 100μ

inches.

6. The method of claim 5, wherein the thickness of the conductive metallic material is from 5 to about 50μ

inches.

7. The method of claim 1, wherein the catalytic ink or catalytic polymeric solution is applied onto the substrate by inkjet printing.

8. The method of claim 1, wherein the catalytic ink or catalytic polymeric solution is applied onto the substrate by screen printing.

9. The method of claim 1, wherein the catalytic ink or catalytic polymeric solution is applied onto the substrate by gravure printing.

12. The method of claim 1, wherein the at least one aperture is a plurality of apertures, the plurality of apertures is formed by a laser prior to defining the plurality of electrodes on the substrate.

13. The method of claim 1, wherein the at lest one aperture is a plurality of apertures the plurality of apertures is formed by punching prior to defining the plurality of electrodes on the substrate.

14. The method of claim 1 further including the act of attaching a lid to the substrate.

15. The method of claim 1 further including the acts of providing a lid, attaching a spacer to the substrate, the spacer being located between the lid and the substrate.

16. The method of claim 1 further applying an enzyme to the substrate.

17. The method of claim 16, wherein the enzyme is glucose oxidase or glucose dehydrogenase.

2. (canceled)

3. (canceled)

10. (canceled)

11. (canceled)

18. A method of forming a plurality of electrodes on a test sensor, the test sensor assisting in determining the concentration of an analyte, the method comprising the acts of:

providing a substrate;

forming a plurality of apertures through the substrate;

applying a catalytic ink or catalytic polymeric solution in a pattern on two sides of the substrate, the catalytic ink or catalytic polymeric solution assisting in defining the plurality of electrodes on the test sensor;

after applying the catalytic ink or catalytic polymeric solution, electroless plating of the substrate with a conductive metal to form the plurality of the electrodes of the substrate, the plurality of electrodes assisting in determining the concentration of the analyte; and

further applying an enzyme to the substrate.

20. The method of claim 18, wherein the electroless plating uses a conductive metal being copper, nickel, gold, silver, platinum, palladium, rhodium, cobalt, tin, combinations or alloys thereof.

21. The method of claim 18, wherein the catalytic ink or catalytic polymeric solution is applied onto the substrate by screen printing.

28. The method of claim 18 further including the act of attaching a lid to the substrate.

29. The method of claim 18 further including the acts of providing a lid, attaching a spacer to the substrate, the spacer being located between the lid and the substrate.

30. The method of claim 18, wherein the enzyme is glucose oxidase or glucose dehydrogenase.

19. (canceled)

22. (canceled)

23. (canceled)

24. (canceled)

25. The method of claim 24, wherein the plurality of apertures is formed by a laser prior to defining the plurality of electrodes on the substrate.

26. (canceled)

27. (canceled)