Claims
- 1. A biosensor for use in determining a concentration of a component in an aqueous liquid sample, the biosensor comprising:
(a) an electrochemical cell, the electrochemical cell comprising a first electrically resistive substrate having a first thin layer of a first electrically conductive material on a first face, a second electrically resistive substrate having a second thin layer of a second electrically conductive material on a second face, the substrates being disposed with the first electrically conductive material facing the second electrically conductive material and being separated by a sheet comprising an aperture, the wall of which aperture cooperates with the electrically conductive materials to define a cell wall, and wherein the aperture defines a working electrode area in the cell, the cell further comprising a sample introduction aperture whereby the aqueous liquid sample may be introduced into the cell, the electrochemical cell additionally comprises a socket region having a first contact area in electrical communication with the first thin layer of the first electrically conductive material and a second contact area in electrical communication with the second thin layer of the second electrically conductive material; and (b) a measuring circuit, the measuring circuit being electrically connectable with the electrochemical cell by engaging with the socket region.
- 2. (canceled)
- 3. The biosensor of claim 1, wherein the measuring circuit comprises a tongue plug.
- 4. The biosensor of claim 1, wherein at least one of the first electrically conductive material and the second electrically conductive material comprises a metal.
- 5. The biosensor of claim 4, wherein the metal comprises a sputter coated metal.
- 6. The biosensor of claim 1, wherein the aqueous liquid sample comprises blood.
- 7. The biosensor of claim 1, wherein the component comprises glucose.
- 8. The biosensor of claim 1, wherein the measuring circuit comprises an automated instrument for detecting an electrical signal from the electrochemical cell and relating the electrical signal to the concentration of the component in the aqueous liquid sample.
- 9. (canceled)
- 10. A biosensor for use in determining a concentration of a component in an aqueous liquid sample, the biosensor comprising:
(a) a thin layer electrochemical cell, the cell comprising:
(i) an electrically resistive sheet comprising an aperture wherein the aperture defines a working electrode area in the cell; (ii) a first electrode layer covering the aperture on a first side of the sheet; (iii) a second electrode layer covering the aperture on a second side of the sheet; (iv) a passage for admission into the aperture of the aqueous liquid sample; and (v) a socket region for receiving a tongue plug, the socket region having a first contact area in electrical communication with the first electrode layer and a second contact area in electrical communication with the second electrode layer; and (b) a measuring circuit.
- 11. The biosensor of claim 10, wherein the electrochemical cell may be electrically connected with the measuring circuit.
- 12. The biosensor of claim 10, wherein the measuring circuit comprises a tongue plug.
- 13. The biosensor of claim 10, wherein the aqueous liquid sample comprises blood.
- 14. The biosensor of claim 10, wherein the component comprises glucose.
- 15. The biosensor of claim 10, wherein the measuring circuit comprises an automated instrument for detecting an electrical signal from the electrochemical cell and relating the electrical signal to the concentration of the component in the aqueous liquid sample.
- 16. The biosensor of claim 10, wherein the cell comprises a substantially flat strip having a thickness, the strip having at least two lateral edges, and wherein the passage for admission into the aperture comprises a notch through the entire thickness of the strip in at least one of the lateral edges thereof.
- 17-32. (canceled)
Priority Claims (2)
Number |
Date |
Country |
Kind |
PCT/AU96/00724 |
Nov 1996 |
WO |
|
PN 6619 |
Nov 1995 |
AU |
|
RELATED APPLICATIONS
[0001] This application is a continuation of copending U.S. application Ser. No. 09/709,968, filed Nov. 10, 2000, which is a continuation of copending U.S. application Ser. No. 09/314,251, filed May 19, 1999, which issued as U.S. Pat. No. 6,174,420 on Jan. 16, 2001, which is a continuation of copending U.S. application Ser. No. 09/068,828, filed on May 15, 1998, and of copending U.S. application Ser. No. 08/852,804, filed on May 7, 1997, which issued as U.S. Pat. No. 5,942,102 on Aug. 24, 1999, the contents of which are incorporated herein by reference in their entirety.
Continuations (5)
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Number |
Date |
Country |
Parent |
09840624 |
Apr 2001 |
US |
Child |
10843956 |
May 2004 |
US |
Parent |
09709968 |
Nov 2000 |
US |
Child |
09840624 |
Apr 2001 |
US |
Parent |
09314251 |
May 1999 |
US |
Child |
09709968 |
Nov 2000 |
US |
Parent |
09068828 |
Mar 1999 |
US |
Child |
09314251 |
May 1999 |
US |
Parent |
08852804 |
May 1997 |
US |
Child |
09314251 |
May 1999 |
US |