Biosensor

• US 6,767,440 B1
• Filed: 04/24/2001
• Issued: 07/27/2004
• Est. Priority Date: 04/24/2001
• Status: Expired due to Term

• Current Assignee: Roche Diabetes Care Inc. (Roche Holding AG)
• Original Assignee: Roche Diagnostics Corporation (Roche Holding AG)
• Inventors: Hill, Brian S., Bhullar, Raghbir S., Wilsey, Christopher D., Austera, John T.
• Primary Examiner(s): Olsen, Kaj K.
• Application Number:
  US09/840,843
• Publication Number:
  US 20040144644A1
• Time in Patent Office: 1,190 Days
• Field of Search: 204/403.01, 204/403.02, 204/403.14, 422/82.01, 422/82.02, 422/82.03
• US Class Current: 204/403.01
• 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 29/49002 Electrical device making

Abstract

A biosensor is provided in accordance with the present invention. The biosensor includes an electrode support substrate, electrodes positioned on the electrode support substrate, a sensor support substrate coupled to the electrode support substrate, and electrically conductive tracks positioned on the sensor support substrate. Each track is in electrical communication with one of the electrodes.

Claims

1. An electrochemical biosensor comprising:

an electrode support substrate,

electrodes positioned on the electrode support substrate,

a sensor support substrate coupled to the electrode support substrate, the sensor support substrate having a first surface, and opposite second surface facing the electrode support substrate, and notches extending between the first and second surfaces, each notch being aligned with a portion of one electrode,

a capillary channel, at least a portion of the electrodes being positioned in the capillary channel, and

electrically conductive tracks positioned on the first surface of the sensor support substrate, a portion of each track extending from the first surface into at least one notch and being in electrical communication with one of the electrodes.

2. The biosensor of claim 1 wherein the electrodes cooperate to define an electrode array and leads extending from the array and each notch is aligned with at least a portion of one lead.

3. The biosensor of claim 1 wherein the electrodes cooperate to define spaced-apart electrode arrays.

4. The biosensor of claim 3 wherein the sensor support substrate is formed to include an opening in alignment with one of the electrode arrays.

5. The biosensor of claim 1 wherein the tracks are formed to include layers.

6. The biosensor of claim 5 wherein one layer is silver ink.

7. The biosensor of claim 5 wherein one layer is carbon ink.

8. The biosensor of claim 5 wherein the electrodes are gold.

9. The biosensor of claim 1 wherein the sensor support substrate is formed to include an opening in alignment with at least a portion of the electrodes.

10. The biosensor of claim 9 further comprising a cover substrate coupled to the sensor support substrate.

11. The biosensor of claim 10 wherein the cover substrate, sensor support substrate, and electrode support substrate cooperate with one another to define channel.

12. The biosensor of claim 1 wherein the electrode support substrate and the sensor support substrate cooperate to define the channel.

13. A biosensor comprising:

a metallized electrode support substrate being formed to define an electrode array and leads extending from the array,

a sensor support substrate coupled to the electrode support substrate, the sensor support substrate being formed to include notches and an opening, at least a portion of each notch being aligned with one lead and the opening being spaced-apart from the leads, and

electrically conductive tracks positioned on the sensor support substrate, each track extending across one of the notches and into engagement with one lead.

14. The biosensor of claim 13 wherein the tracks are formed to include layers.

15. The biosensor of claim 14 wherein one layer is silver ink.

16. The biosensor of claim 14 wherein one layer is carbon ink.

17. The biosensor of claim 14 wherein the electrode array and leads are gold.

18. The biosensor of claim 14 further comprising a cover substrate coupled to the sensor support substrate and extending across the electrode array.

19. A biosensor comprising:

an electrode support substrate being formed to define an electrode array and leads extending from the array,

a sensor support substrate positioned on the electrode support substrate, the sensor support substrate being formed to include notches and an opening, at least a portion of each notch being aligned with one lead and the opening being spaced-apart from the leads, and

electrically conductive tracks positioned on the sensor support substrate, each track extending across one of the notches and into engagement with one lead.

20. The biosensor of claim 19 wherein the tracks are formed to include layers.

21. The biosensor of claim 20 wherein one layer is silver ink.

22. The biosensor of claim 20 wherein one layer is carbon ink.

23. The biosensor of claim 20 wherein the electrode array and leads are gold.

24. The biosensor of claim 20 further comprising a cover substrate coupled to the sensor support substrate and extending across the electrode array.