Method for analyzing a biological sample

• US 20030000834A1
• Filed: 09/04/2002
• Published: 01/02/2003
• Est. Priority Date: 06/11/1998
• Status: Active Grant

• Current Assignee: PHC Holdings Corporation
• Original Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Inventors: Ikeda, Shin, Yoshioka, Toshihiko, Nankai, Shiro, Watanabe, Motokazu
• Granted Patent: US 6,699,382 B2
• Time in Patent Office: Days
• US Class Current: 204/403.01
• CPC Class Codes: C12Q 1/001 Enzyme electrodes

Abstract

A biosensor enabling accurate measurement of the concentration of a substrate contained in a trace amount of a sample solution is disclosed. The electrochemical analysis element in accordance with the present invention which should be included in the biosensor comprises a sensor body having a hollow space which space is open at its both ends, an electrode system having a working electrode and a counter electrode, a reagent segment containing an enzyme, wherein the electrode system and the reagent segment are disposed on an inner wall of the hollow space.

Claims

1. An electrochemical analysis element comprising a sensor body having a hollow space which space is open at its both ends, an electrode system including a working electrode and a counter electrode and a reagent segment containing an enzyme,

wherein said electrode system and said reagent segment are disposed on an inner wall of said hollow space.

2. The electrochemical analysis element in accordance with claim 1, wherein said working electrode is positioned to oppose to said counter electrode on said inner wall of said hollow space.

3. The electrochemical analysis element in accordance with claim 1, wherein said reagent segment further comprises an electron acceptor.

4. The electrochemical analysis element in accordance with claim 1, wherein said reagent segment is disposed on said working electrode.

5. The electrochemical analysis element in accordance with one of claim 1, wherein a filter is disposed on at least one open end of said hollow space.

6. The electrochemical analysis element in accordance with one of claim 1, wherein both open ends of said hollow space are closed with a film.