Method for determining the concentration of blood glucose

• US 20040126832A1
• Filed: 04/10/2003
• Published: 07/01/2004
• Est. Priority Date: 12/31/2002
• Status: Active Grant

• Current Assignee: Intellectual Ventures I LLC (Intellectual Ventures LLC)
• Original Assignee: Hiyes International Co., Ltd.
• Inventors: Wang, Kuo-Jeng, Chen, Jian-Tsz
• Granted Patent: US 7,222,024 B2
• Time in Patent Office: Days
• US Class Current: 435/14
• CPC Class Codes: C12Q 1/006 for glucose
• CPC Class Codes: C12Q 1/54 involving glucose or galactose

Abstract

The present invention provides a method for determining concentration of blood glucose by using the change in the rising time. The chemical reaction between the blood glucose and enzyme within the test strip to generate the analog source that used to determine the concentration of the blood glucose in the measuring meter. Thus, the rising curve can be obtained after the analog source is treated, such that the concentration of the blood glucose can be determined.

Claims

1. A method for determining the concentration of the blood glucose, said method comprising:

providing a blood glucose solution placed on a test strip with an enzyme, wherein a chemical reaction is between said blood glucose solution and said test strip to generate an analog source;

inputting said analog source into a measuring circuit to covert said analog source into a digital signal;

outputting said digital signal as a waver pattern, wherein a first time is relative to a turning point of said wave pattern;

estimating a maximum value of said wave pattern, and obtaining a second time is relative to said maximum value;

calculating a difference value between said first time and said second time, wherein said difference value is a rising time of said wave pattern; and

finding a concentration of said blood glucose that is relative to said rising time.

2. The method according to claim 1, wherein said chemical reaction is an oxidation-reduction reaction.

3. The method according to claim 1, wherein said measuring circuit comprises:

an amplifier, said amplifier used to receive said analog source;

a converting device, said converting device used to convert said analog source from an analog signal into a digital signal;

a treating-controlling device, said treating-controlling device used to treat said digital signal; and

an outputting device, said outputting device used to display said digital signal.

4. The method according to claim 3, wherein said converting device is an analog-to-digital converting system.

5. The method according to claim 3, wherein said treating-controlling device is a microprocessor-controlling unit.

6. The method according to claim 1, wherein said calculating said maximum value by using a value of first order differential is greater than zero.

7. The method according to claim 1, wherein said finding said concentration of said blood glucose is relative to said rising time comprises a relative diagram of said rising time and said concentration of said blood glucose solution.