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Biological sensor and its composite

A biosensor and polymer technology, applied in the field of biosensors, can solve the problems of measurement error, easy to be affected by ambient temperature, poor adhesion of test pieces, etc.

Inactive Publication Date: 2008-12-10
DELTA ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, electrodes made of existing compositions are not conducive to measuring the concentration of analytes in biological aqueous solutions because of high impedance between a sample such as blood and the hydrophobic electrode of the test strip
[0005] If only a composition containing an aqueous solution is used to make an electrode, there is a problem of poor adhesion to the test piece
In addition, during the electrochemical reaction, the water-containing sample is easy to dissolve the electrode, resulting in a huge error in the measurement result
[0006] In addition, in the existing methods of measuring blood sugar concentration, the blood sample is reacted with glucose oxidase or glucose dehydrogenase, which is easily affected by the ambient temperature, which is not conducive to the accuracy of the measurement results

Method used

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  • Biological sensor and its composite
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Embodiment Construction

[0026] A biosensor and its composition according to a preferred embodiment of the present invention will be described below with reference to related figures, wherein the same components are described with the same symbols.

[0027] A first feature of the present invention is that the electrodes of the biosensor contain metallized graphite. Such as figure 1 As shown, a test piece 10 of a biosensor of the present invention includes a substrate 11 , at least two electrodes 12 and a reagent 13 . The electrode 12 is located on a surface of the substrate 11 and defines a sample area 121 , and the reagent 13 is located in the sample area 121 . When measuring the concentration of the analyte, the blood drops into the sample area 121, the blood sample reacts with the enzyme in the reagent 13, and the current change generated by it is transmitted to the electronic measuring device (not shown) through the electrode 12 to quantify the blood sugar concentration .

[0028] In an embodim...

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Abstract

The present invention discloses a biosensor including a test piece which provides integrated heating components and a metalized graphitic electrode, wherein the metalized graphite contains 0.1-5%wt.% of metal, than 55 wt.% of graphite and polymers. The biosensor also includes a electronic measurement device which provides a socket for inserting the test piece.

Description

technical field [0001] The present invention relates to a biosensor, in particular to a biosensor integrated with a heating element and electrodes with metallized graphite. [0002] The biosensor of the present invention is used to measure the blood glucose concentration but is not limited to this application. For example, the concentration measurement of the analyte in a solution other than a blood sample is also within the scope of application of the biosensor of the present invention. Background technique [0003] Existing blood glucose machines include a test piece and electronic devices. The test strip has electrodes on it and enzymes in specific positions. The subject first inserts the test piece into the electronic device and then drops the blood on the specific position of the test piece. The blood sugar in the blood can electrochemically react with the enzyme on the test piece, and the current change generated by it is transmitted to the electronic device through t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/50G01N27/26G01N33/66
CPCH01B1/22H01B1/24
Inventor 庄旻杰何蕴初邢泰刚刘炯权沈杰
Owner DELTA ELECTRONICS INC