CN-116671923-B - Electrocardiogram electrode and preparation method thereof

CN116671923BCN 116671923 BCN116671923 BCN 116671923BCN-116671923-B

Abstract

The application relates to the field of electrocardio, and particularly provides an electrocardio electrode and a preparation method thereof. The electrode includes the substrate layer, is provided with the stock solution chamber on one side of substrate layer, and the stock solution intracavity portion is provided with gel portion, and the fixed one side that sets up in the substrate layer and is provided with the stock solution chamber of carbon-based fabric electrode layer, and the edge bonding fixed connection of carbon-based fabric electrode layer and substrate layer, carbon-based fabric electrode layer cover the stock solution chamber, and the area of carbon-based fabric electrode layer is greater than the sum of stock solution chamber open area, and the size of stock solution chamber open one end is greater than the size of stock solution chamber bottom one end. The preparation method of the electrode comprises the following steps of preparing a substrate layer, preparing a liquid storage cavity on the substrate layer, filling conductive hydrogel in the liquid storage cavity, and arranging a carbon-based fabric electrode layer. Therefore, the electrocardio electrode is suitable for detecting electrocardio signals, does not cause allergy, has small contact impedance with skin, low noise and higher detection accuracy.

Inventors

ZANG JUNBIN
XUE CHENYANG
GAO LIBO
LIU DAN
ZHANG ZHIDONG
REN YONGLIN
YANG GUODONG
TIAN XIAOLI
LI XIAOYAN

Assignees

中北大学
华阳新材料科技集团有限公司

Dates

Publication Date: 20260505
Application Date: 20230620

Claims (3)

1. The electrocardio electrode comprises a substrate layer, and is characterized in that a liquid storage cavity is formed in one side face of the substrate layer, a gel part is arranged in the liquid storage cavity, the gel part is conductive hydrogel, the carbon-based fabric electrode layer is fixedly arranged on one side of the substrate layer, which is provided with the liquid storage cavity, the periphery of the carbon-based fabric electrode layer is fixedly adhered to the edge of the substrate layer by using an adhesive, the carbon-based fabric electrode layer covers the liquid storage cavity, the area of the carbon-based fabric electrode layer is larger than the sum of the open areas of the liquid storage cavity, the depth of the liquid storage cavity is one third to two thirds of the thickness of the substrate layer, the liquid storage cavity is provided with a plurality of liquid storage cavities, the conductive hydrogel is arranged in the liquid storage cavities, the n+2th row of the liquid storage cavity is aligned with the n+1th row, the n rows are staggered, n represents the number of liquid storage cavities, the shape of the liquid storage cavities is in tail phase connection, the conductive hydrogel is arranged in a circular ring, the conductive hydrogel is arranged in the circular ring, and the conductive hydrogel is formed in the circular ring, and electromagnetic induction current is formed in the circular ring, and the circular ring is formed, and the electromagnetic induction current is prevented from being influenced by the electromagnetic induction current, and the electromagnetic induction current is formed in the circular ring.
2. The electrocardio-electrode according to claim 1, wherein the carbon material of the carbon-based fabric electrode layer is carbon nano tube or graphene, and the thickness of the carbon-based fabric electrode layer is 0.5-3.0mm.
3. The electrocardio-electrode according to claim 1, wherein the material of the base material layer is an elastic material, and the thickness of the base material layer is 0.5mm to 5.0mm.

Description

Electrocardiogram electrode and preparation method thereof Technical Field The application relates to the field of electrocardio, in particular to an electrocardio electrode and a preparation method thereof. Background The electrocardiosignals can reflect the occurrence, transmission and recovery processes of heart excitation, and the collection of the electrocardiosignals has very important significance for clinical detection and health monitoring. The electrocardio electrode is a device for collecting electrocardio signals, and is contacted with human skin when in general use and used for recording the change of the electric activity generated by each cardiac cycle of the heart from the body surface. The common electrocardio-electrode comprises a metal electrode, a gel electrode and a fabric electrode, wherein the latter two electrodes have better flexibility, are contacted with the skin more closely, and have more accurate detection results. However, the conductive hydrogel in the gel electrode is easy to lose water for a long time, and the contact of the dehydrated conductive hydrogel with the skin is easy to cause skin allergy, so that the flexible dry electrode material without the conductive hydrogel becomes a research hot spot. See the paper published in the journal of cotton technology entitled "research progress on electroactive fiber flexible electrocardio electrodes". The carbon-based fabric electrode contains carbon materials, such as carbon nano tubes or graphene, and has good biocompatibility and good conductivity. However, when the carbon-based fabric electrode is in contact with the skin, the contact impedance is large, noise is easy to generate in an electrocardiosignal, and the detection result is not accurate enough. In summary, the conventional gel electrode is easy to cause skin allergy after long-term use, the carbon-based fabric electrode is not sufficiently contacted with skin, the contact resistance is large, noise is easy to generate, and the accuracy of a detection result is reduced, so that the conventional gel electrode is not suitable for detecting electrocardiosignals. Disclosure of Invention The invention aims to overcome the defects in the prior art, and provides an electrocardio electrode and a preparation method thereof, so as to solve the problems that the conventional gel electrode is easy to cause skin allergy after long-time use, a carbon-based fabric electrode is not contacted with skin sufficiently, contact impedance is high, noise is easy to generate, and the accuracy of a detection result is reduced, and therefore, the electrocardio electrode is not suitable for detecting electrocardio signals. The technical concept of the invention is that the liquid storage cavity on the surface of the substrate layer is provided with conductive hydrogel, the carbon-based fabric electrode layer is arranged above the surface of the substrate layer, and the carbon-based fabric electrode layer covers all the liquid storage cavities, so that the conductive hydrogel is surrounded by the substrate layer and the carbon-based fabric electrode layer. When the electrocardiograph is used, one side of the substrate layer is pressed, and the conductive hydrogel in the liquid storage cavity enters the carbon-based fabric electrode layer, so that the carbon-based fabric electrode layer is contacted and attached with the skin, the contact resistance is reduced, the noise in an electrocardiograph signal is reduced, and the accuracy of a detection result is improved. Meanwhile, due to the coverage of the carbon-based fabric electrode layer, on one hand, the conductive hydrogel is not in direct contact with the skin and cannot cause skin allergy, and on the other hand, the existence of the carbon-based fabric electrode layer enables water molecules in the conductive hydrogel not to be easily evaporated, so that the conductive hydrogel is not easily dried, and skin allergy of a user cannot be caused. In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: the application provides an electrocardio electrode which comprises a substrate layer, wherein a liquid storage cavity is formed in one side surface of the substrate layer, a gel part is arranged in the liquid storage cavity, a carbon-based fabric electrode layer is fixedly arranged on one side of the substrate layer, which is provided with the liquid storage cavity, the carbon-based fabric electrode layer is fixedly connected with the edge of the substrate layer in an adhesive mode, the carbon-based fabric electrode layer covers the liquid storage cavity, the area of the carbon-based fabric electrode layer is larger than the sum of the open areas of the liquid storage cavity, and the size of one end of the open end of the liquid storage cavity is larger than the size of one end of the bottom of the liquid storage cavity. Further, the depth of the liquid storage cavity is one third to two thirds of the t