Electrochemical biosensor strip

• US 20060180467A1
• Filed: 02/14/2005
• Published: 08/17/2006
• Est. Priority Date: 02/14/2005
• Status: Abandoned Application

• Current Assignee: TaiDoc Technology Corporation
• Original Assignee: TaiDoc Technology Corporation
• Inventors: Pi, Chun-Hui, Wu, Chia-Chi, Wu, Shu-Mei, Chen, Chao-Wang
• Application Number:
  US11/056,254
• Publication Number:
  US 20060180467A1
• Time in Patent Office: Days
• US Class Current: 204/403.10
• CPC Class Codes: G01N 27/3272 Test elements therefor, i.e. disposable laminated substrates with electrodes, reagent and channels optical biosensors G01N33/52

Abstract

An electrochemical biosensor strip has a base, an electrode system, an optional spacer and a cover. The electrode system is laid on the base. The spacer is laid on the electrode system and exposes a portion of the electrode system for electrical connection with a meter and a different portion of the electrode system for application of a test reagent that is a reagent that is specific for the test to be performed by the strip. The cover is covered on the spacer to form a cavity. The spacer has an exhausting channel for exiting air such that receiving rate for drawing an analyte-containing fluid into the strip is increasing. Besides, the electrochemical biosensor strip may have a concave unit formed in the cover and corresponding to the test reagent for increasing receiving angles to draw an analyte-containing fluid into the strip such that the flow rate of the analyte-containing fluid is increasing so the test is more accurate.

Claims

1. An electrochemical biosensor strip, comprising:

a base;

an electrode system laid on the base, comprising a first end and a second end;

a spacer laid on the electrode system to expose a portion of the first end of the electrode system for an electrical connection adapted to a meter, having an opening to expose a predetermined portion of the electrode system for applying a test reagent and an exhausting channel communicated with the opening for exiting air; and

a cover covered on the spacer.

2. The electrochemical biosensor strip as claimed in claim 1, wherein the opening of the spacer is formed in one side thereof.

3. The electrochemical biosensor strip as claimed in claim 2, wherein the exhausting channel is formed extendedly from the opening and opened to another side of the spacer.

4. The electrochemical biosensor strip as claimed in claim 1, wherein the opening of the spacer is formed in one end thereof.

5. The electrochemical biosensor strip as claimed in claim 4, wherein the exhausting channel and the opening are formed in a T-shape.

6. The electrochemical biosensor strip as claimed in claim 1, wherein the electrode system comprises at least three electrodes and a short circuit formed between two selected electrodes of the at least three electrodes

7. The electrochemical biosensor strip as claimed in claim 1, wherein the electrode system comprises a silver layer laid on the base and a carbon layer laid on the silver layer.

8. The electrochemical biosensor strip as claimed in claim 7, wherein the silver layer has a forked shape unit formed on the base and between the electrodes and the carbon layer has an arrowhead shape unit formed corresponding to the forked shape unit.

9. The electrochemical biosensor strip as claimed in claim 1, further comprising a rough unit formed on the base corresponding to the test reagent and adjacent to the electrode system.

10. The electrochemical biosensor strip as claimed in claim 1, further comprising an insulating substance laid on the electrode system.

12. An electrochemical biosensor strip comprising

a base;

an electrode system laid on the base and a portion of the electrode system exposed for an electrical connection adapted to a meter and a predetermined portion of the electrode system exposed for applying of a test reagent; and

a cover laid on the electrode system and comprising a concave unit formed therein and corresponding to the test reagent.

11. The electrochemical biosensor strip as claimed in claim 12, wherein the opening of the spacer is formed in one end of the spacer, and the insulating substance has an opening formed corresponding to the opening of the spacer.

13. The electrochemical biosensor strip as claimed in claim 12, wherein the concave unit is semicircle-shape.

14. The electrochemical biosensor strip as claimed in claim 12, wherein the concave unit is semi-ellipse-shape.

15. The electrochemical biosensor strip as claimed in claim 12, further comprising a rough unit formed on the base corresponding to the test reagent and adjacent to the electrode system.

16. The electrochemical biosensor strip as claimed in claim 15, wherein the rough unit is a line or multiple lines.

17. The electrochemical biosensor strip as claimed in claim 16, wherein the rough unit is laid adjacent to the electrode system.

18. The electrochemical biosensor strip as claimed in claim 12, further comprising a spacer covered on the electrode system to expose the portion of the electrode system for an electrical connection adapted to a meter, having an opening to expose the predetermined portion of the electrode system for applying the test reagent and an exhausting channel communicated with the opening.

19. The electrochemical biosensor strip as claimed in claim 18, wherein the opening of the spacer is formed in one side of the spacer.

20. The electrochemical biosensor strip as claimed in claim 18, wherein the opening of the spacer is formed in one end of the spacer.

21. The electrochemical biosensor strip as claimed in claim 20, further comprising an insulating substance laid on the electrode system.

22. The electrochemical biosensor strip as claimed in claim 21, wherein the insulating substance has an opening formed corresponding to the opening of the spacer.

23. The electrochemical biosensor strip as claimed in claim 12, wherein the electrode system comprises at least three electrodes and a short circuit is formed between two selected electrodes of the at least three electrodes.

24. The electrochemical biosensor strip as claimed in claim 12, wherein the electrode system comprises a silver layer laid on the base and a carbon layer laid on the silver layer.

25. The electrochemical biosensor strip as claimed in claim 24, wherein the silver layer has a forked shape unit formed on the base and between the electrodes and the carbon layer has an arrowhead shape unit formed corresponding to the forked shape unit.

26. The electrochemical biosensor strip as claimed in claim 12, wherein the cover has a channel with a hole formed corresponding to the opening of the spacer.