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Conductive liquid for electroencephalogram sensor

A sensor and conductive liquid technology, applied in conductive adhesives, electrodes, electrotherapy, etc., can solve problems such as prolonging test time and affecting medical work efficiency, so as to relieve medical pressure, improve medical work efficiency, and save test time Effect

Active Publication Date: 2022-04-05
MAXENMED GUANGZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Before the formal test, medical staff usually wipe the skin surface with a non-woven cloth soaked in normal saline to remove oil, so as to improve the reliability of the connection between the sensor collection end and the human body surface and improve the detection accuracy. The increased operation steps of the test will undoubtedly prolong the test time and affect the efficiency of medical work

Method used

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  • Conductive liquid for electroencephalogram sensor
  • Conductive liquid for electroencephalogram sensor
  • Conductive liquid for electroencephalogram sensor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] An EEG sensor conductive liquid, comprising the following components in mass percentage: 10% sodium chloride, 0.5% triacylglycerol acyl hydrolase, 10% glycerin, 10% pectin, 0.1% sodium methyl p-hydroxybenzoate, The rest is deionized water, the conductive liquid contains sodium bicarbonate, and the pH value of the conductive liquid is 8.

[0026] The preparation method of electroencephalogram sensor conductive liquid comprises the following steps:

[0027] (1) Add deionized water into the reaction kettle and heat it to 60°C and keep it constant, add 10g of sodium chloride, 0.5g of triacylglycerol acyl hydrolase, and 0.1g of sodium methyl p-hydroxybenzoate, at 200r / min Stir at a high speed for 15 minutes until all the added ingredients are dissolved;

[0028] (2) Mix 10g of glycerin and 10g of pectin evenly, adjust the stirring speed of the reaction kettle in step (1) to 40r / min, add the mixture of glycerin and pectin while stirring, and stir for 2h at a stirring speed o...

Embodiment 2

[0032] A conductive liquid for EEG sensors, comprising the following components in mass percent: 10% potassium chloride, 0.5% triacylglycerol acyl hydrolase, 10% propylene glycol, 10% gelatin, 0.1% ethylparaben, and the rest is deionized water, the conductive liquid contains sodium bicarbonate, and the pH value of the conductive liquid is 8.2.

[0033] The preparation method of electroencephalogram sensor conductive liquid comprises the following steps:

[0034] (1) Add deionized water into the reaction kettle and heat it to 60°C and keep it constant, add 10g of potassium chloride, 0.5g of triacylglycerol acyl hydrolase, 0.1g of ethylparaben, and stir at a speed of 200r / min 15min until all the added ingredients are dissolved;

[0035] (2) Mix 10 g of propylene glycol and 10 g of gelatin evenly, adjust the stirring speed of the reactor in step (1) to 40 r / min, add the mixture of propylene glycol and gelatin while stirring, and stir for 2 hours at a stirring speed of 200 r / min ...

Embodiment 3

[0039] An EEG sensor conductive liquid, comprising the following components in mass percent: 5% sodium chloride, 0.3% triacylglycerol acyl hydrolase, 20% glycerin, 15% pectin, 0.5% sodium methyl p-hydroxybenzoate, The rest is deionized water, the conductive liquid contains sodium bicarbonate, and the pH value of the conductive liquid is 8.6.

[0040] The preparation method of electroencephalogram sensor conductive liquid comprises the following steps:

[0041] (1) Add deionized water into the reaction kettle and heat to 65°C and keep it constant, add 5g of sodium chloride, 0.3g of triacylglycerol acyl hydrolase, 0.5g of sodium methyl p-hydroxybenzoate, at 300r / min Stir at a high speed for 15 minutes until all the added ingredients are dissolved;

[0042] (2) Mix 20g of glycerin and 15g of pectin evenly, adjust the stirring speed of the reaction kettle in step (1) to 30r / min, add the mixture of glycerin and pectin while stirring, and stir for 2h at a stirring speed of 300r / min...

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Abstract

The present invention relates to the field of medical conductive liquid, in particular to a conductive liquid for electroencephalogram sensors, comprising the following components in mass percentage: 2%-10% of salt electrolyte, 0.1%-1% of lipase, and 2%-20% of moisturizing agent , gel forming agent 10%-20%, preservative 0.1%-1%, the rest is deionized water, and the pH value of the electroencephalogram sensor conductive liquid is 8-9. Lipase is added to the conductive liquid of the EEG sensor of the present invention, and the conductive liquid is adjusted in the optimum pH value range, so that the conductive liquid is enzymatically decomposed into fatty acid sodium when it contacts grease, reducing the interference of grease to the electrodes for collecting human body electrical signals, Increase the sensitivity of the electrodes for signal collection and the test accuracy of the EEG sensor.

Description

technical field [0001] The invention relates to the field of medical conductive liquid, in particular to a conductive liquid for electroencephalogram sensors. Background technique [0002] As an intermediary between the human body and medical electrodes, conductive fluid has important application value in the fields of electrocardiogram, electroencephalogram and other medical devices. Because the conductive liquid has the advantages of increased penetration, improved electrical conductivity, and reduced impedance, it is widely used in EEG testing. [0003] The surface of human facial skin usually secretes oil and sweat. The main component of oil is glyceride, and the others are a small amount of cholesterol, inositol and fatty acid. Sweat glands contain sodium chloride, a small amount of urea, lactic acid, fatty acid and other substances. In EEG detection, grease is the biggest factor affecting the conductivity of EEG sensor electrodes. Before the formal test, medical staf...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61K50/00
CPCA61K9/0009C09J9/02
Inventor 郭淑儿
Owner MAXENMED GUANGZHOU
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