Electro chemical biological sensor chip for micro-sample

Abstract

A test block of electrochemical biological transducer used for taking microsample is prepared as forming test block by a pair of insulation base plates, setting reaction region being projected outwards and having its periphery opened on end edge of base plate, setting operation electrode and reference electrode with different polarities between base plates and covering reaction ferment separately on one end extending to reaction region of each electrode. In detection process, the end without reaction ferment is inserted into detector and reaction region is used to detect out concentration of tested body.

Description

technical field [0001] The present invention is an electrochemical biosensor test piece, which is a specific electrochemical reaction between an oxidized or reduced substance and an analyte in a sample to generate electron transfer, and is used in conjunction with a detection instrument to detect the detection The test piece with body concentration, and the surrounding of the reaction area is fully open, which makes it easier for the sample to be tested to enter the reaction area, without being limited by the direction. Background technique [0002] Due to the increasing concept of home care, there are more and more fast, cheap, and self-testing products at home that do not require professional operation, such as blood glucose instruments, electronic ear thermometers, electronic sphygmomanometers, etc. Among them, the disposable blood glucose test used in blood glucose meters The tablet is to use the principle of electrochemical biosensor to detect the blood glucose concentr...

AI Technical Summary

Problems solved by technology

[0008] The disadvantages of this capillary action sheet electrode test piece are: first, four steps are required to complete the reaction film, forming a CMC layer to improve the hydrophobicity of the electrode surface in the reaction zone; forming a GOD layer, a hydrophilic protective film PVP layer and The electronic medium layer must be dried before each layer is formed, and the process steps are cumbersome

Second, the way to apply the sample is to contact the tip of the electrode test piece, the sample will be automatically introduced into the reaction area, but there is only one position where the sample can be applied

Third, the test piece is too small to take and use, and it is easy to contaminate the sample suction port

However, this test piece has only one sample suction port, and the direction is on the right side. The disadvantage is that there is only one sample application port, and the orientation is also fixed in one direction.

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