CALIBRATION METHOD FOR BLOOD GLUCOSE OF BLOOD SAMPLE

• US 20150377825A1
• Filed: 01/07/2015
• Published: 12/31/2015
• Est. Priority Date: 06/25/2014
• Status: Abandoned Application

• Current Assignee: Delbio, Inc. (Delta Electronics Incorporated)
• Original Assignee: Delbio, Inc. (Delta Electronics Incorporated)
• Inventors: TSAI, Tsung-Hsuan, YIN, Chien-Yu, CHOU, Yi-An
• Application Number:
  US14/591,503
• Publication Number:
  US 20150377825A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G01N 27/3274 Corrective measures, e.g. error detection, compensation for temperature or hematocrit, calibration coding of calibration information G01N33/48771
• CPC Class Codes: G01N 27/4163 checking the operation of, or calibrating, the measuring apparatus G01N27/3274, G01N27/4175 and G01N33/0006 take precedence

Abstract

A calibration method for blood glucose of a blood sample includes steps of: applying a first voltage to a blood sample to obtain a first blood glucose level; applying a second voltage to the blood sample to obtain a second blood glucose level; applying a third voltage to the blood sample to obtain a hematocrit index of the blood sample; and processing the hematocrit index and calibrating the second blood glucose level. The third voltage is higher than the first voltage. Through this disclosure, user can obtain a sensing current corresponding to the blood glucose level and a hematocrit index corresponding to blood sample by applying at least three-stage voltages within specific ranges to the blood sample, and further calibrate the blood glucose concentration according to the hematocrit index.

Claims

1. A calibration method for blood glucose of a blood sample, comprising steps of:

applying a first voltage to a blood sample to obtain a first blood glucose level;

applying a second voltage to the blood sample to obtain a second blood glucose level;

applying a third voltage to the blood sample to obtain a hematocrit index of the blood sample; and

processing the hematocrit index and calibrating the second blood glucose level,

wherein the third voltage is higher than the first voltage.

2. The calibration method as recited in claim 1, wherein the first voltage ranges between 0˜

1V.

3. The calibration method as recited in claim 1, wherein the second voltage ranges between −

1˜

0V.

4. The calibration method as recited in claim 3, wherein the second voltage ranges between −

0.9˜

−

0.1V.

5. The calibration method as recited in claim 1, wherein the application of the second voltage lasts for 0.5˜

5 seconds.

6. The calibration method as recited in claim 1, wherein the third voltage ranges between 1˜

4V.

7. The calibration method as recited in claim 1, wherein the application of the third voltage lasts for 0.5˜

5 seconds.

8. The calibration method as recited in claim 1, wherein the first voltage, the second voltage and the third voltage are DC voltages.

9. The calibration method as recited in claim 1, wherein processing the hematocrit index is to obtain a hematocrit according to a linear relation.