Test strip for a concentration measuring apparatus biosensor system

• US 6,827,829 B2
• Filed: 03/06/2003
• Issued: 12/07/2004
• Est. Priority Date: 07/22/1997
• Status: Expired due to Term

• Current Assignee: Panasonic Healthcare Company Limited (PHC Holdings Corporation)
• Original Assignee: Kyoto Daiichi Kagaku Company Limited, Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Inventors: Tokuno, Yoshinobu, Ishida, Kohei, Kawanaka, Shoji
• Primary Examiner(s): Olsen, Kaj K
• Application Number:
  US10/379,726
• Publication Number:
  US 20030150724A1
• Time in Patent Office: 642 Days
• Field of Search: 204/403.01, 204/403.02, 204/403.04, 204/403.1, 204/401, 204/406, 204/416, 422/82.01, 422/82.02, 422/82.03
• US Class Current: 204/403.02
• CPC Class Codes: C12Q 1/006 for glucose
• CPC Class Codes: G01N 27/3272 Test elements therefor, i.e. disposable laminated substrates with electrodes, reagent and channels optical biosensors G01N33/52
• CPC Class Codes: G01N 33/48771 Coding of information, e.g. calibration data, lot number

Abstract

The present invention is to provide a concentration measuring apparatus, a test strip for the concentration measuring apparatus, a biosensor system and a method for forming terminals of the test strip, whereby a component to be measured can be measured by the test strip fit to the target component to be measured. A type judgement electrode is provided separately from a positive electrode and a negative electrode in a measuring apparatus so as to judge the type of a set test strip with the measuring apparatus. Thus only when a test strip matching the measuring apparatus is set, the type judgement electrode is electrically connected to a terminal of the set test strip, enabling the measuring apparatus to measure a component to be measured in a liquid test sample. A measuring apparatus detects a calibration curve information selection change for selecting a calibration curve information corresponding to a production lot of the set test strip thereby to compensate for an error in a measured concentration value of the component.

Claims

1. A test strip for insertion into a concentration measuring apparatus, said test strip comprising:

a base material;

a reaction reagent for reacting with a liquid test sample;

a positive terminal;

a negative terminal;

said positive and negative terminals electrically detecting a concentration of a specific component in the liquid test sample based on the reaction of the reaction reagent;

at least one reagent identifying terminal for identifying the test strip wherein the reagent identifying terminal is electrically connected to said positive terminal.

2. The test strip according to claim 1, wherein the reagent identifying electrode is connected to a set potential.

3. The test strip according to claim 1, wherein said at least one reagent identifying terminal is a plurality of reagent identifying terminals providing a combination of connections for identifying the test strip.

4. The test strip according to claim 3, wherein said plurality of reagent identifying terminals include a first terminal electrically connecting one of a pair high level electrodes and a grounding electrode and a second terminal electrically connecting another one of said pair of high level electrodes.

5. The test strip according to claim 1, wherein said reagent identifying terminal identifies said test strip as being appropriate for a measuring apparatus into which it is inserted.

6. A test strip for insertion into a concentration measuring apparatus, said test strip comprising:

a base material;

a reaction reagent for reacting with a liquid test sample;

a positive terminal;

a negative terminal;

said positive and negative terminals electrically detecting a concentration of a specific component in the liquid test sample based on the reaction of the reaction reagent;

at least one reagent identifying terminal for identifying the test strip wherein the reagent identifying terminal is electrically connected to said negative terminal.

7. The test strip according to claim 6, wherein the reagent identifying electrode is connected to a set potential.

8. The test strip according to claim 6, wherein said at least one reagent identifying terminal is a plurality of reagent identifying terminals providing a combination of connections for identifying the test strip.

9. The test strip according to claim 8, wherein said plurality of reagent identifying terminals include a first terminal electrically connecting one of a pair high level electrodes and a grounding electrode and a second terminal electrically connecting another one of said pair of high level electrodes.

10. The test strip according to claim 6, wherein said reagent identifying terminal identifies said test strip as being appropriate for a measuring apparatus into which it is inserted.

11. A test strip for insertion into a concentration measuring apparatus, said test strip comprising:

a base material;

a reaction reagent for reacting with a liquid test sample;

a positive terminal;

a negative terminal;

said positive and negative terminals electrically detecting a concentration of a specific component in the liquid test sample based on the reaction of the reaction reagent;

at least one reagent identifying terminal for identifying the test strip;

wherein said at least one reagent identifying terminal is a plurality of reagent identifying terminals providing a combination of connections for identifying the test strip; and

wherein said plurality of reagent identifying terminals include a first plurality of reagent identifying terminals and a second plurality of reagent identifying terminals where said second plurality is farther from an end of said test strip in the direction of insertion of the strip into a measuring apparatus than said first plurality.

12. A test strip for insertion into a concentration measuring apparatus, said test strip comprising:

a base material;

a reaction reagent for reacting with a liquid test sample;

a positive terminal;

a negative terminal;

said positive and negative terminals electrically detecting a concentration of a specific component in the liquid test sample based on the reaction of the reaction reagent;

at least one reagent identifying terminal for identifying the test strip;

wherein said at least one reagent identifying terminal is a plurality of reagent identifying terminals providing a combination of corrections for identifying the test strip; and

wherein said plurality of reagent identifying terminals includes a plurality of groups of terminals with each group being at a different distance from an end of said test strip in a direction of insertion of said test strip into said measuring apparatus.

13. The test strip according to claim 12, wherein corresponding terminals in different groups form a pattern of potential changes for identifying said test strip.