Electrochemical Sensor System Using a Substrate With at Least One Aperture and Method of Making the Same

• US 20090184000A1
• Filed: 12/21/2006
• Published: 07/23/2009
• Est. Priority Date: 12/27/2005
• Status: Active Grant

• Current Assignee: Ascensia Diabetes Care Holdings AG (PHC Holdings Corporation)
• Original Assignee: Ascensia Diabetes Care Holdings AG (PHC Holdings Corporation)
• Inventors: Rebec, Mihailo V., Brenneman, Allen J.
• Granted Patent: US 9,668,683 B2
• Time in Patent Office: Days
• US Class Current: 205/775
• CPC Class Codes: A61B 5/14507 specially adapted for measuring characteristics of body fluids other than blood devices for taking samples of body liquids A61B10/0045
• CPC Class Codes: A61B 5/14532 for measuring glucose, e.g. by tissue impedance measurement
• CPC Class Codes: A61B 5/14546 for measuring analytes not otherwise provided for, e.g. ions, cytochromes
• CPC Class Codes: A61B 5/1468 using chemical or electrochemical methods, e.g. by polarographic means A61B5/1486 takes precedence
• CPC Class Codes: A61B 5/1477 non-invasive
• CPC Class Codes: C12Q 1/006 for glucose
• CPC Class Codes: Y10T 29/49124 On flat or curved insulated base, e.g., printed circuit, etc.

Abstract

An electrochemical sensor system is adapted to assist in determining an analyte concentration of a fluid. The electrochemical sensor system comprises a substrate, conductive material and a hydrogel or liquid. The substrate having porosity therethrough. The conductive material includes at least one electrode. The at least one electrode is coupled to the substrate. The at least one electrode has a first surface and an opposing second surface. The hydrogel or liquid is adapted to assist in carrying the analyte of the fluid to the first and second surfaces of the at least one electrode.

Claims

1. An electrochemical sensor system adapted to assist in determining an analyte concentration of a fluid, the electrochemical sensor system comprising:

a substrate having porosity therethrough;

conductive material including at least one electrode, the at least one electrode being coupled to the substrate, the at least one electrode having a first surface and an opposing second surface; and

a hydrogel or liquid being adapted to assist in carrying the analyte of the fluid to the first and second surfaces of the at least one electrode.

2. The system of claim 1, wherein the substrate is a screen, scrim, woven material or solid material with apertures.

9. The system of claim 1, wherein the at least one electrode is located on a surface of the substrate.

10. The system of claim 1, wherein a portion of the at least one electrode is located within the substrate.

12. The system of claim 1, wherein the at least one electrode has a first section and a second section, the first section having the first surface and the second section having the opposing second surface.

13. The system of claim 1, wherein the porosity of the substrate includes at least one aperture being formed therethrough, the conductive material substantially filling the at least one aperture.

14. The system of claim 1, wherein the electrochemical sensor system uses a hydrogel.

15. The system of claim 14, wherein the hydrogel is a cross-linked polymer.

16. The system of claim 1, wherein the electrochemical sensor system uses a liquid.

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21. A method of forming an electrochemical sensor system that is adapted to assist in determining an analyte concentration, the method comprising the acts of:

providing a substrate having porosity therethrough;

adding conductive material to the substrate, the conductive material having a first side and a second side, the conductive material forming at least one electrode;

providing a hydrogel or liquid; and

contacting the substrate and the at least one added electrode with the hydrogel such that the analyte is adapted to contact the first side and the second side of the at least one electrode.

23. The method of claim 21, wherein the conductive material is added to the substrate by sputtering.

24. The method of claim 21, wherein the conductive material is added to the substrate by printing.

25. The method of claim 21, wherein the analyte is glucose.

26. The method of claim 21, wherein the substrate is a screen, scrim, woven material or solid material with apertures.

35. The method of claim 21, wherein the electrochemical sensor system uses a hydrogel.

36. The method of claim 35, wherein the hydrogel is a cross-linked polymer.

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40. A method of determining an analyte concentration of a fluid, the method comprising the acts of:

providing an electrochemical sensor system including a substrate, conductive material, a hydrogel or liquid, the substrate having porosity therethrough, the conductive material being coupled to the substrate, the conductive material having a first side and a second side, the conductive material forming at least one electrode, the substrate and. the at least one added electrode being contacted with the hydrogel such that the analyte is adapted to contact the first side and the second side of the at least one electrode;

placing the electrochemical sensor system on the skin; and

determining the analyte concentration of the fluid.

42. The method of claim 40, wherein the substrate is a screen, scrim, woven material or solid material with apertures.

45. The method of claim 40, wherein the electrochemical sensor system uses a hydrogel.

46. The method of claim 40, wherein the electrochemical sensor system uses a liquid.

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