Biosensor

• US 7,473,398 B2
• Filed: 05/25/2001
• Issued: 01/06/2009
• Est. Priority Date: 05/25/2001
• Status: Expired due to Term

• Current Assignee: Roche Diabetes Care Inc. (Roche Holding AG)
• Original Assignee: Roche Diagnostics Operations Incorporated (Roche Holding AG)
• Inventors: Reiser, Wolfgang O. L., Bhullar, Raghbir S., Wilsey, Christopher D., Austera, John T.
• Primary Examiner(s): SIEFKE, SAMUEL P
• Application Number:
  US09/866,030
• Publication Number:
  US 20020192115A1
• Time in Patent Office: 2,783 Days
• Field of Search: 422/82.01, 422/56, 422/58, 422/61, 422/68.1, 422/82.02, 422/50, 422/99, 435/817, 204/403.01, 204/409, 205/777.5
• US Class Current: 422/82.01
• CPC Class Codes: C12Q 1/001 Enzyme electrodes
• CPC Class Codes: G01N 27/3272 Test elements therefor, i.e. disposable laminated substrates with electrodes, reagent and channels optical biosensors G01N33/52

Abstract

The present invention relates to a biosensor. The biosensor includes a support substrate having first and second ends, electrodes positioned on the support substrate, the electrodes cooperating with one another to define electrode arrays situated adjacent to the first end, a spacer substrate positioned on the support substrate, and a cover positioned on the spacer substrate. The cover cooperates with the support substrate to define a channel. The channel includes an inlet adjacent to the first end and opposite ends. Each electrode array is positioned in the channel adjacent to one of the ends.

Claims

1. A biosensor comprising

a support having first and second ends,

electrodes positioned on the support, the electrodes cooperating with one another to define electrode arrays situated adjacent to the first end,

a spacer having individual members, and

a cover cooperating with the support to define a capillary channel extending between the individual members, the channel having opposing ends outlets and a concave inlet extending from the first end of the support and being positioned between the opposing outlets of the channel, each electrode array being positioned in the channel adjacent to one of the opposing outlets.

2. The biosensor of claim 1 wherein the individual members of the spacer include spaced-apart first, second and third members and the channel extends between the first, second, and third members.

3. A biosensor comprising:

a support having a first edge,

first and second electrode sets positioned on the support spaced-apart from one another,

a spacer having individual members, and

a cover having a second edge, the cover extending across the first and second electrode sets, the cover cooperating with the support to define a generally linear capillary channel extending between the individual members, the channel having opposing first and second outlets and an inlet aligned with the first edge of the support and the second edge of the cover, between the outlets of the channel, and between the first and second electrode sets.

4. The biosensor of claim 3 wherein the individual members include a first member extending between the outlets of the channel.

5. The biosensor of claim 4 wherein the members include a second member positioned between one outlet and the inlet and a third member positioned between the opposite outlet and the inlet.

6. The biosensor of claim 4 wherein the members include second and third members spaced-apart from the first member and the channel extends between the first, second, and third members.

7. The biosensor of claim 3 wherein the cover and the support are formed to include a notch in general alignment with one another.

8. The biosensor of claim 7 wherein each notch is generally concave in shape.

9. The biosensor of claim 7 wherein the inlet intersects the notches.

10. A biosensor comprising

a support having first and second ends,

electrodes positioned on the support, the electrodes cooperating with one another to define electrode arrays situated adjacent to the first end,

a spacer having individual first, second, and third members, and

a cover cooperating with support to define a capillary channel, the channel extending between the three members and having an inlet positioned between the second and third members adjacent to the first end of the support and spaced-apart first and second opposite outlets, the first opposite outlet being positioned between the first and second members and the second opposite outlet being positioned between the first and third members, each electrode array being positioned in the channel adjacent to one of the opposite outlets.

11. The biosensor of claim 10 wherein the cover and the support are formed to include a notch in general alignment with one another.

12. The biosensor of claim 11 wherein each notch is generally concave in shape.

13. The biosensor of claim 11 wherein the inlet intersects the notches.