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Making method of graphene electrocardioelectrode

A technology of ECG electrodes and manufacturing methods, which is applied in the direction of cable/conductor manufacturing, circuits, electrical components, etc., and can solve the problems of low defibrillation recovery performance, high AC impedance of ECG electrodes, and low Raman scattering intensity

Inactive Publication Date: 2018-04-17
湖南豌豆医疗用品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] Silver (0.63×106S / cm) is the metal with the highest conductivity and conductivity in nature, which can be used to improve the conductivity of graphene and increase the conductivity; but the affinity between silver and graphene is not good, resulting in the Raman of graphene Scattering enhancement does not reach the ideal state, which leads to high AC impedance of ECG electrodes, high internal noise, and low defibrillation recovery performance due to low Raman scattering intensity after mixing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0092] A kind of manufacture method of graphene electrocardiogram electrode, comprises the steps:

[0093] Step 1. Add pure hydrazine hydrate and 0.3% ammonia water to a 7.7% graphene aqueous solution, centrifuge at 4000 rpm for 1 hour and heat at 80°C for 30 minutes to react to obtain a reduced graphene solution, wherein hydrazine hydrate, ammonia water and The volume ratio of the graphene aqueous solution is 0.3:7.7:92.

[0094] Step 2, soaking the resin in the reduced graphene solution, then drying the resin;

[0095] Step 3. Slowly add sodium borohydride / deionized aqueous solution to the silver nitrate aqueous solution dropwise, and stir while adding until it is evenly stirred to obtain a mixed solution. The concentration of silver nitrate in the mixed solution is 6.5%, and the concentration of sodium borohydride 0.35mol / L; and then soak the resin with graphene after drying in the mixed solution for 10min, and reduce the silver ions by ultraviolet light to prepare the Ag / ...

Embodiment 2

[0097] A kind of manufacture method of graphene electrocardiogram electrode, comprises the steps:

[0098] Step 1, add pure hydrazine hydrate and ammonia water with a concentration of 0.35% into a graphene aqueous solution with a concentration of (5.65)%, centrifuge at 4000 rpm for 1 hour and heat at 80° C. for 60 minutes to react to obtain a reduced graphene solution, wherein hydrazine hydrate, The volume ratio of ammonia water and graphene aqueous solution is 0.35:5.65:94.

[0099] Step 2, soaking the resin in the reduced graphene solution, then drying the resin;

[0100] Step 3. Slowly add the sodium borohydride / deionized aqueous solution into the silver nitrate aqueous solution dropwise, and stir while adding until it is evenly stirred to obtain a mixed solution. The concentration of silver nitrate in the mixed solution is 9%, and the concentration of sodium borohydride 0.05mol / L;, and then soak the resin with graphene after drying in the mixed solution for 50min, and red...

Embodiment 3

[0102] A kind of manufacture method of graphene electrocardiogram electrode, comprises the steps:

[0103] Step 1, adding pure hydrazine hydrate and ammonia water with a concentration of 0.4% to a graphene aqueous solution with a concentration of (4.6)%, centrifuging at 4000 rpm for 1 hour and heating at 80°C for 60 minutes to react to obtain a reduced graphene solution, wherein hydrazine hydrate, The volume ratio of ammonia water and graphene aqueous solution is 0.4:4.6:95.

[0104] Step 2, soaking the resin in the reduced graphene solution, then drying the resin;

[0105] Step 3. Slowly add sodium borohydride / deionized aqueous solution to the silver nitrate aqueous solution dropwise, and stir while adding dropwise until it is evenly stirred to obtain a mixed solution. The concentration of silver nitrate in the mixed solution is 10%, and the concentration of sodium borohydride is 10%. 0.9mol / L, and then soak the resin with graphene after drying in the mixed solution for 30mi...

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Abstract

The invention discloses a making method of a graphene electrocardioelectrode. The making method includes: mixing a solution containing silver ions with graphene; irradiating by an ultraviolet lamp forreduction to obtain the electrocardioelectrode. The defect that silver and graphene are incompatible is overcome, and Raman scattering of graphene is enhanced. The electrocardioelectrode made by themethod overcomes the defect that silver and graphene are incompatible, Raman scattering of graphene is enhanced, electroconductive efficiency and stability of the electrocardioelectrode are improved,and service life of the electrocardioelectrode is prolonged.

Description

technical field [0001] The invention belongs to the field of electrocardiogram electrodes, in particular to a method for manufacturing a graphene electrocardiogram electrode. Background technique [0002] Raman scattering: When light is scattered from an atom or molecule, most of the photons are elastically scattered, which is called Rayleigh scattering. Under Rayleigh scattering, the scattered photons have the same energy, frequency and wavelength as the incoming photons. However, a small fraction of scattered photons, about 1 in 10 million photons, will change in frequency after scattering, usually lower than the frequency of the incident photon, called Raman scattering, because the incident An energy exchange occurs between the photons and the molecules of the medium. [0003] The enhancement of the Raman scattering signal depends on the shape and size of the Raman scattering substrate and the adsorption between the substrate and the probe molecules. Silver is one of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/0408H01B13/00
CPCA61B5/25H01B13/00
Inventor 谭周辉
Owner 湖南豌豆医疗用品有限公司
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