Apparatus and method for measuring biomedical data using algorithm for improving reproducibility

• US 9,307,937 B2
• Filed: 03/11/2010
• Issued: 04/12/2016
• Est. Priority Date: 06/04/2009
• Status: Active Grant

• Current Assignee: Osang Healthcare Co., Ltd.
• Original Assignee: INFOPIA CO., LTD
• Inventors: Bae, Byeong-Woo, Lee, Sung-Dong, Kho, Byung-Hoon, Ryu, Ji-Eon, Kim, Jin-Kyeong, Joung, Hyou-Arm, Lee, Yooh-Hee
• Primary Examiner(s): Dejong, Eric S
• Application Number:
  US12/722,110
• Publication Number:
  US 20100311090A1
• Time in Patent Office: 2,224 Days
• US Class Current: 1/1
• CPC Class Codes: A61B 5/14546 for measuring analytes not otherwise provided for, e.g. ions, cytochromes
• CPC Class Codes: A61B 5/1455 using optical sensors, e.g. spectral photometrical oximeters
• CPC Class Codes: G01N 33/48785 Electrical and electronic details of measuring devices for physical analysis of liquid biological material not specific to a particular test method, e.g. user interface or power supply
• CPC Class Codes: G16H 10/40 for data related to laboratory analysis, e.g. patient specimen analysis
• CPC Class Codes: G16H 40/63 for local operation
• CPC Class Codes: G16H 70/20 relating to practices or guidelines

Abstract

Disclosed herein is a method and apparatus for measuring biomedical data. The method of measuring biomedical data using a biochemical reaction includes determining reaction termination time at which the biochemical reaction has been stabilized based on an average variation in a predetermined period in an early stage of measurement, and obtaining a final measured value by adding a correction value to a value measured at the determined reaction termination time.

Claims

1. A method of measuring biomedical data using an apparatus for measuring biomedical data, comprising:

inserting a measurement strip into the apparatus for measuring the biomedical data;

applying blood to a reactive portion of the measurement strip on which enzyme material for measuring cholesterol is provided;

detecting color change of the reactive portion of measurement strip in a predetermined period of measurement as a result of the biochemical reaction between the blood and the enzyme material on the reactive portion;

determining reflectance of the reactive portion of the measurement strip in the predetermined period of measurement based on the color change;

detecting a point of time at which a current average variation is a value which is equal to or less than a value obtained by multiplying the average variation of the dertermined reflectance in the predetermined period of measurement by a determination constant;

determining reaction termination time according to the point of time;

generating a correction value by calculating a difference between a measured value at a start of the predetermined period of measurement and a measured value at an end of the predetermined period of measurement;

obtaining a final measured value by adding the correction value to a value of the reflectance measured at the determined reaction termination time; and

converting the final measured value into the biomedical data.

2. The method set forth in claim 1, wherein the biochemical reaction is an enzyme reaction.

3. The method as set forth in claim 1, wherein the determination constant is in a range from 0.001 to 0.5.

4. The method as set forth in claim 1, wherein the predetermined period of measurement is determined depending on the type of measurement.