Concentration measuring apparatus, test strip for the concentration measuring apparatus biosensor system and method for forming terminal on the test strip

• US 20030150724A1
• Filed: 03/06/2003
• Published: 08/14/2003
• Est. Priority Date: 07/22/1997
• Status: Active Grant

• Current Assignee: Panasonic Healthcare Company Limited (PHC Holdings Corporation)
• Original Assignee: Kyoto Daiichi Kagaku Company Limited
• Inventors: Tokuno, Yoshinobu, Ishida, Kohei, Kawanaka, Shoji
• Granted Patent: US 6,827,829 B2
• Time in Patent Office: Days
• 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 (104) is provided separately from a positive electrode (102) and a negative electrode (103) in a measuring apparatus (101) so as to judge the type of a set test strip with the measuring apparatus. Thus only when a test strip (115) 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 (251) 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 concentration measuring apparatus and a test strip which is applied thereto, the test strip including on a base material a reaction reagent for reacting with a liquid test sample, a positive terminal, and a negative terminal, the terminals electrically detecting a concentration of a specific component in the liquid test sample based on the reaction of the reaction reagent, the concentration measuring apparatus comprising a positive electrode and a negative electrode to be electrically connected respectively to the positive terminal and the negative terminal of the test strip, thereby measuring the concentration of the specific component in the liquid test sample via the positive electrode and the negative electrode,

the concentration measuring apparatus further comprising a reagent identifying electrode for identifying a type of the reaction reagent formed on the test strip which measures the concentration of a sample applied to the concentration measuring apparatus, with the reagent identifying electrode being provided separately from the positive electrode and negative electrode.

2. The concentration measuring apparatus according to claim 1, further comprising a reagent detector which determines that the test strip corresponds to the concentration measuring apparatus.

3. The concentration measuring apparatus according to claim 1, further comprising a reagent detector which determines that the test strip having the reaction reagent which is to react to the specific component in the liquid test sample corresponds to the concentration measuring apparatus.