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Leather-based preparation method of electrocardiogram monitoring dry electrode

A dry electrode and electrical monitoring technology, which is applied in diagnostic recording/measurement, medical science, sensors, etc., can solve the problems of inconvenient wet electrodes, poor quality of ECG signals, and skin irritation reactions in wearable ECG monitoring systems , to improve human-computer interaction experience, reduce interface impedance, and reduce interference

Inactive Publication Date: 2018-04-03
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, no matter how the miniaturization and wirelessization of devices develop, wearable ECG monitoring systems are still greatly limited due to the inconvenience and discomfort of wet electrodes in sticking to the patient's skin.
Standard silver / silver chloride ECG electrodes mainly rely on conductive gel to achieve a better fit with the skin, but with use, the gel will gradually dry out, resulting in increased contact resistance and poor ECG signal quality
In addition, for some patients with sensitive skin, the gel is irritating to some extent and may cause an irritating reaction to the skin
At the same time, sweat may also cause greater signal interference to wet electrodes

Method used

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  • Leather-based preparation method of electrocardiogram monitoring dry electrode
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  • Leather-based preparation method of electrocardiogram monitoring dry electrode

Examples

Experimental program
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Effect test

Embodiment 1

[0034] Leather preparation

[0035] Firstly, the second layer of sheepskin is used, rinsed with pure water, dried in an oven at 60°C for 6 hours, and then cut into rectangles with a size of 1cm*4cm.

[0036] Preparation of leather electrodes

[0037] Drop and evenly cover the pyrrole monomer on the leather, then place the leather with the pyrrole monomer dropwise in a glass petri dish, pour 10mL of 0.3mol / L ferric chloride solution, and put it in an ice bath. The polymerization reaction was carried out for 2 hours. Among them, such as figure 1 As shown, it can be clearly observed that the leather turns black, and the surface load is polypyrrole.

[0038] After the reaction, pour off the excess reaction solution, pick up the leather with tweezers, rinse off the excess polypyrrole on the surface with pure water, and place it in an oven at 60 degrees Celsius to dry it for use.

[0039] The self-impedance of the leather electrode prepared by this method is 25-45Ω / cm 2 .

Embodiment 2

[0041] Leather preparation

[0042] Firstly, the second layer of sheepskin is used, rinsed with pure water, dried in an oven at 60°C for 6 hours, and then cut into rectangles with a size of 1cm*4cm.

[0043] Optimization of leather electrodes

[0044] Add dropwise and evenly covered pyrrole monomer on the leather, then place the leather with dropwise added pyrrole monomer in a glass petri dish, pour 10mL of 0.3mol / L ferric chloride and 0.3mol / L PTSA solution, the polymerization reaction was carried out in ice bath for 2 hours. Among them, it can be clearly observed that the leather turns black, and polypyrrole is supported on the surface.

[0045] After the reaction, pour off the excess reaction solution, pick up the leather with tweezers, rinse off the excess polypyrrole on the surface with pure water, and place it in an oven at 60 degrees Celsius to dry it for use.

[0046] The self-impedance of the leather electrode prepared by this method is 10-20Ω / cm 2 .

Embodiment 3

[0048] Leather preparation

[0049] Firstly, the second layer of sheepskin is used, rinsed with pure water, dried in an oven at 60°C for 6 hours, and then cut into rectangles with a size of 1cm*4cm.

[0050] Preparation of leather electrodes

[0051]Drop and evenly cover the pyrrole monomer on the leather, then place the leather with the pyrrole monomer dropwise in a glass petri dish, pour 10mL of 0.3mol / L ferric chloride solution and 5mL of 0.3mol / L PTSA solution, the polymerization reaction was carried out in ice bath for 2 hours. Among them, such as figure 1 As shown, it can be clearly observed that the leather turns black, and the surface load is polypyrrole.

[0052] After the reaction, pour off the excess reaction solution, pick up the leather with tweezers, rinse off the excess polypyrrole on the surface with pure water, and place it in an oven at 60 degrees Celsius to dry it for use.

[0053] The self-impedance of the leather electrode prepared by this method is 2...

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Abstract

The invention discloses a leather-based preparation method of electrocardiogram monitoring dry electrode, which comprises the following steps: dropwise adding a pyrrole monomer onto a dry flexible leather substrate to uniformly overspread leather with the pyrrole monomer, then dropwise adding a ferric chloride solution and a PTSA (p-toluene sulphonic acid) solution, and performing standing for 0.5to 4h under an ice bath condition to obtain leather immobilized with pyrrole on the surface; washing the obtained leather immobilized with the pyrrole with purified water, and drying the leather to obtain an electrocardiogram monitoring dry electrode prepared on the basis of the leather. The self impedance of the leather dry electrode obtained by the method is higher than that of a standard commercial electrode. The preparation method for the leather dry electrode is simple and mild in preparation condition, and has far-reaching significance on further development and popularization of flexible electrodes and flexible electrons.

Description

technical field [0001] The invention relates to the fields of flexible electronics, medical treatment, etc., in particular to the technical field of wearable devices used for health monitoring, and in particular to a method for preparing dry electrodes for ECG monitoring based on leather. Background technique [0002] In recent years, wearable devices have attracted a lot of attention. In particular, the use of wearable devices in the fields of medical care and health monitoring has a further development trend and has a large market. Wearable medical devices, in improving home care, custom monitoring health problems for patients, and sustainable monitoring are also needed. They can help people build their own health databases and be able to warn patients when they are at risk. These devices have changed people's cognition and behavior in the medical and health fields, and have greatly opened up the market for flexible wearable devices in medical health monitoring. [0003...

Claims

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Application Information

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IPC IPC(8): A61B5/0408
CPCA61B2562/164A61B2562/14A61B2562/125A61B5/25
Inventor 霍峰蔚张伟娜张波谢瑞杰肖更午王彧李盛张所瀛
Owner NANJING UNIV OF TECH
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