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Graphene nano-wall flexible ECG electrode and preparation method thereof

A graphene nano-wall and electrocardiographic electrode technology, which is applied in the field of medical devices, can solve the problems of not being able to effectively improve the conductivity of electrodes, and achieve the effects of easy mass production, low polarization, and good conductivity

Active Publication Date: 2017-08-25
CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, some people consider adding graphene as a conductive layer to the surface of the metal electrode, but this has the following disadvantages: there is a contact resistance between graphene and the metal electrode, which cannot effectively improve the conductivity of the electrode

Method used

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  • Graphene nano-wall flexible ECG electrode and preparation method thereof
  • Graphene nano-wall flexible ECG electrode and preparation method thereof

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Effect test

Embodiment 1

[0030] The graphene nano-wall flexible ECG electrode described in this embodiment does not need to be bonded by a binder, and the flexible substrate used, that is, polydimethylsiloxane, also has the function of a binder.

[0031] The preparation method of graphene nano wall flexible electrocardiogram electrode described in this embodiment (flow process sees figure 1 ),Specific steps are as follows:

[0032] 1) Place the copper foil in acetone, ethanol, and deionized water for 10 minutes, and dry it with nitrogen for later use;

[0033] 2) Place the dried copper foil in the vacuum chamber of the plasma-enhanced chemical vapor deposition system to grow graphene nanowalls by plasma-enhanced chemical vapor deposition; the growth conditions of graphene nanowall films are pressure 30-100Pa, The growth temperature is 600-750°C, the gas used is a mixture of hydrogen and methane (hydrogen gas volume: methane volume = 2:3), the growth time is 5-30min, and the graphene nanowall film on ...

Embodiment 2

[0038] The preparation method of graphene nano wall flexible electrocardiogram electrode described in this embodiment (flow process sees figure 2 ),Specific steps are as follows:

[0039] 1) Place the nickel foil in acetone, ethanol, and deionized water for ultrasonic cleaning for 10 minutes, and dry it with nitrogen for later use;

[0040] 2) Place the dried copper foil in the vacuum cavity of the plasma chemical vapor deposition system to grow the graphene nano-wall film by plasma enhanced chemical vapor deposition; the growth condition of the graphene nano-wall film is a pressure of 30-100Pa, The temperature is 600-750°C, the gas used is a mixture of hydrogen and methane (hydrogen gas volume: methane volume = 2:3), and the growth time is 5-30min to obtain a graphene nanowall film on copper foil;

[0041] 3) Coat a layer of conductive silver glue on the edge of the graphene nanowall film, and connect the conductive silver glue to the silver wire; then place the whole mater...

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Abstract

The invention discloses a graphene nanowall flexible electrocardio-electrode and a preparation method thereof. The flexible electrocardio-electrode comprises a flexible substrate layer and a graphene nanowall layer, wherein a layer of conductive silver adhesives coats the side edge of the graphene nanowall layer and connected with a metal conductor. The graphene nanowall flexible electrocardio-electrode is high in flexibility, and can be closely clung to a body surface; the acquired potential difference is accurate; in addition, the electrode is small in impedance, outstanding in conductive performance, difficult to be polarized, resistant to interference and resistant to noise; in addition, the service life of the electrode can be greatly prolonged due to the corrosion resistance of graphene. The graphene nanowall flexible electrocardio-electrode is simple and convenient to operate, short in manufacturing cycle and easily produced by mass.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to a graphene nano-wall flexible ECG electrode and a preparation method thereof. Background technique [0002] In each cardiac cycle, the heart is accompanied by changes in bioelectricity during the successive excitations of the pacemaker, atrium, and ventricle. These bioelectrical changes are called ECG. Since the tissues and body fluids around the heart can conduct electricity, the heart can be used as a power source, and the human body can be used as a volume conductor to conduct the sum of changes in the action potential of cardiomyocytes to the body surface. Therefore, there are potential differences or equipotentials between different body surface locations, and these changes in electrical activity are collected to form a graph, which is the electrocardiogram. By analyzing the electrocardiogram, we can understand the state of the human heart. [0003] The...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/0408
CPCA61B5/25
Inventor 魏大鹏刘盾宋雪芬杨俊孙泰史浩飞杜春雷
Owner CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
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