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Electrochemical cell

  • US 20050098431A1
  • Filed: 07/22/2003
  • Published: 05/12/2005
  • Est. Priority Date: 06/19/1995
  • Status: Abandoned Application
First Claim
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1. A hollow electrochemical cell for measuring a concentration of glucose in a blood sample, the hollow electrochemical cell comprising:

  • (a) at least one non-metal working electrode;

    (b) at least one counter electrode or counter/reference electrode, wherein the working electrode and the counter electrode or counter/reference electrode are not co-planar and are separated by a distance of from about 20 to about 200 microns;

    (c) a spacer interposed between the working electrode and the counter electrode or counter/reference electrode, wherein the spacer comprises a non-conductive polymeric material, and wherein the spacer and the electrodes define walls of the hollow cell; and

    (d) a fluid permeable side-wall on at least one side of the hollow cell permitting entry of the sample into the hollow cell, wherein the hollow cell comprises an effective cell volume of less than 1.5 microliters.

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