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Electrochemical sensor and manufacture method thereof

A sensor and electrochemical technology, which is applied in the field of rapid electrochemical diagnosis, can solve the problems that are not conducive to mass production, increase the cost of raw materials, increase the assembly process, etc., and achieve the effect of simple process, ensuring normal use, and avoiding blood absorption

Inactive Publication Date: 2015-03-11
DONGGUAN QINGMAITIAN DIGITAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the storage of a small amount of test strips, such as blood glucose test strips used with disposable blood glucose meters, setting a desiccant pouch separately in the sealed packaging box not only increases the cost of raw materials, but also increases the assembly process, which is not conducive to mass production

Method used

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  • Electrochemical sensor and manufacture method thereof
  • Electrochemical sensor and manufacture method thereof
  • Electrochemical sensor and manufacture method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] First prepare the desiccant sheet 6, first dissolve calcium chloride in water, then immerse the hygroscopic sheet-like attachment in the above solution, and then dry the above-mentioned attachment containing calcium chloride, that is, the calcium chloride-containing of desiccant tablets6. Wherein, the sheet-like attachment may be tissue paper, fiber paper, or foam absorbent material.

[0020] Such as figure 1 and 2 As shown, a conductive silver paste or carbon paste is screen-printed on a substrate 1 to form a measuring electrode 2 . Attach the spacer layer 4 with a groove 41 at one end to the substrate 1, the spacer layer 4 is shorter than the substrate 1, so as to expose the external wiring pin at one end of the measurement electrode 2, and the other end of the measurement electrode 2 is partially exposed in the groove 41 middle. Then take the enzyme reaction drug liquid and drop it on the part of the measuring electrode 2 exposed in the groove 41, and dry it to f...

Embodiment 2

[0022] Firstly, the desiccant sheet 6 is prepared in the manner of Example 1.

[0023] Such as image 3 and 4 As shown, a larger substrate 1 is taken, and conductive silver paste or carbon paste is screen-printed on it to form a measuring electrode 2 . Attach the spacer layer 4 with a groove 41 at one end to the substrate 1, the spacer layer 4 is shorter than the substrate 1, so as to expose the external wiring pin at one end of the measurement electrode 2, and the other end of the measurement electrode 2 is partially exposed in the groove 41 middle. Then take the enzyme reaction drug liquid and drop it on the part of the measuring electrode 2 exposed in the groove, and dry it to form the enzyme reaction area 3 . The enzyme reaction liquid is a solution composed of glucose-specific enzymes and electron transfer mediators. Take a cover plate 5 whose length is equal to that of the spacer layer 4 , and punch holes in the cover plate 5 as exhaust through holes 51 . The cover ...

Embodiment 3

[0025] Firstly, the desiccant sheet 6 is prepared in the manner of Example 1.

[0026] Such as Figure 5 As shown, a conductive silver paste or carbon paste is screen-printed on a substrate 1 to form a measuring electrode 2 . The spacer layer 4 with a groove 41 at one end is pasted on the substrate 1 to define a siphon channel. The spacer layer 4 is shorter than the substrate 1 to expose the external wiring pin at one end of the measurement electrode 2, and the other end part of the measurement electrode 2 exposed in groove 41. Then take the enzyme reaction drug liquid and drop it on the part of the measuring electrode 2 exposed in the groove, and dry it to form the enzyme reaction area 3 . The enzyme reaction liquid is a solution composed of glucose-specific enzymes and electron transfer mediators. Take a cover plate 5 whose length is shorter than that of the spacer layer 4 , and punch holes in the cover plate 5 as exhaust through holes 51 . The cover plate 5 is pasted on...

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PUM

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Abstract

The invention discloses an electrochemical sensor. The electrochemical sensor comprises a base plate, a cover plate, a measuring electrode and an enzyme reaction zone, wherein an interval layer with a groove at one end is arranged between the base plate and the cover plate; the groove, the base plate and the cover plate form a siphon channel; an exhaust through hole is formed in the cover plate corresponding to the tail end of the siphon channel; a desiccant sheet is arranged on the cover plate, or on one side of the cover plate or below the base plate. The invention further relates to a manufacture method of the electrochemical sensor. The electrochemical sensor provided by the invention has the self-drying function; the preparation method of the electrochemical sensor provided by the invention is simple in processes, and can realize mass production.

Description

technical field [0001] The invention relates to the technical field of electrochemical rapid diagnosis, in particular to an electrochemical sensor with desiccant function. In addition, the present invention also relates to a preparation method of the electrochemical sensor. Background technique [0002] The electrochemical sensors currently on the market are similar in composition, including insulating substrates and cover plates, measuring electrodes, enzyme reaction regions, and siphon channels. In order to enhance the siphon effect, hydrophilic substances are often coated in the siphon channel. Therefore, when the electrochemical sensor is exposed to the air, it is easy to absorb moisture in the air. On the one hand, the enzyme in the reaction zone will deteriorate and the activity will be reduced. On the other hand, it will also weaken the siphon effect of the electrochemical sensor on the blood during use. It can be seen that only by storing the test strip in a dry en...

Claims

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Application Information

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IPC IPC(8): G01N27/26
Inventor 马莉
Owner DONGGUAN QINGMAITIAN DIGITAL TECH
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