Apparatus for measuring a component in a liquid sample

• US 6,733,643 B2
• Filed: 07/30/2001
• Issued: 05/11/2004
• Est. Priority Date: 08/01/2000
• Status: Expired due to Fees

• Current Assignee: NEC Corporation
• Original Assignee: NEC Corporation
• Inventors: Matsumoto, Toru, Murakami, Toru
• Primary Examiner(s): Noguerda, Alex
• Application Number:
  US09/916,514
• Publication Number:
  US 20020014409A1
• Time in Patent Office: 1,016 Days
• Field of Search: 204/401, 204/402, 204/400, 204/403.01, 204/403.14, 204/416, 204/408, 422/55, 422/58, 422/61
• US Class Current: 204/403.14
• CPC Class Codes: C12Q 1/004 mediator-assisted
• CPC Class Codes: C12Q 1/54 involving glucose or galactose

Abstract

A measurement apparatus, including a biosensor for carrying out measurement of a specified component in a liquid sample using an enzymatic reaction, a computation processing part for obtaining the computed value by computing an output signal of the biosensor, and a container for storing a calibration liquid for calibrating the biosensor, equipped with temperature control means (a heater 40, a thermostat 41) for keeping the calibration liquid at a constant temperature, saves an installation space by miniaturizing an apparatus, suppresses the running cost, and improves the measurement precision.

Claims

1. A measurement apparatus, comprising:

a main body comprising a biosensor for carrying out measurement of a specified component in a liquid sample using an enzymatic reaction, and a computation processing part for obtaining a computed value by computing an output signal of the biosensor; and

a container, separately provided from said main body, for storing a calibration liquid for calibrating the biosensor,

wherein the container comprises a temperature control means for keeping the calibration liquid at a constant temperature.

2. The measurement apparatus according to claim 1, wherein said biosensor comprises an enzyme layer for measuring the liquid sample.

3. The measurement apparatus according to claim 1, wherein the biosensor comprises an electrochemical sensor equipped with an enzyme electrode as a working electrode.

4. The measurement apparatus according to claim 3, wherein the liquid sample comprises urine.

5. A measurement apparatus, comprising:

a biosensor for carrying out measurement of a specified component in a liquid sample using an enzymatic reaction;

a computation processing part for obtaining a computed value by computing an output signal of the biosensor; and

a container for storing a calibration liquid for calibrating the biosensor,

wherein the container is equipped with temperature measurement means for measuring a temperature of the calibration liquid and the computation processing part has a function of correcting the computed value depending on the temperature of the calibration liquid measured by the temperature measurement means.

6. The measurement apparatus according to claim 5, wherein said biosensor comprises an enzyme layer for measuring the liquid sample.

7. The measurement apparatus according to claim 5, wherein the biosensor comprises an electrochemical sensor equipped with an enzyme electrode as a working electrode.

8. The measurement apparatus according to claim 7, wherein the liquid sample comprises urine.