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High-accuracy anti-oxidation electrode

An anti-oxidation and precision technology, which is applied in medical science, sensors, diagnostic recording/measurement, etc., can solve the problems of poor electrode comfort or contact characteristics, poor adhesion of substrate materials, and ineffective contact of electrodes. To achieve the effect of guaranteeing oxidation resistance and electrical conductivity, easy to control, and convenient to disassemble and assemble

Pending Publication Date: 2018-11-13
LANZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the dry electrodes used in the hairy area and the existing mushroom head electrodes in the prior art, the comfort or contact characteristics are not good; the wet electrodes used in the hairy area need to be supplemented with conductive paste during use. When injecting the conductive paste It is necessary to lift or pull up the electrodes, which will affect the contact of other leads and increase inconvenience; the electrode materials of some electrodes have poor oxidation resistance, which will affect their conductivity after long-term use and introduce unnecessary noise; some electrodes cannot Effective contact in the back of the brain and other parts; the contact surface coating of some electrodes is formed by electroplating and other methods, the film surface is rough, and the adhesion to the base material is not good.

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0045] see Figure 1-10 , a high-precision anti-oxidation precision electrode, comprising an electrode main body 5, the inside of the electrode main body 5 is screwed to the lower end of the screw knob 20, the outside of the motor main body 5 is screwed to the chassis 19, and the outer lower end of the chassis 19 is movably connected to the fixed plate 14;

[0046] The inside of the electrode main body 5 is provided with a cylindrical cavity 18, the outside of the electrode main body 5 is provided with an electrode external thread 6, the lower end of the electrode main body 5 is provided with an electrode head 16, and the middle part of the inside of the electrode head 16 is provided with a conductive paste extrusion hole 7. The bottom of the chamber 18 is fixedly connected to the upper surface of the electrode head 16;

[0047] The screw knob 20 includes a knob cap 1 and a screw rod 2, the middle part of the lower surface of the knob cap 1 is fixedly connected with the upper ...

Embodiment 2

[0062] The present invention has designed a new type of EEG electrode suitable for hairy areas. The base material is aluminum, and the surface is plated with a gold coating. This treatment method can not only ensure the conductivity of the electrode body 5, but also enhance Its antioxidant properties make it durable for long-term use. There is a chassis 19 for fixing on the outside of the electrode main body 5, which can form a stable base at the hole corresponding to the lead on the EEG cap, so that it can be firmly fixed, and allows the electrode to be used in special cases such as reducing the number of leads. The electrode part is removed to achieve modularization and specialization; the fixed plate 14 has a toothed structure processed along the thread direction, allowing the user to control the depth of the electrode through rotation, ensuring the depth of the electrode at different positions on the EEG cap reached the appropriate value. A certain amount of conductive pa...

Embodiment 3

[0067] In the present invention, the performance test of the electrode is based on the one-time measurement electrode standard, and the impedance-frequency curve of the designed electrode can be measured through the electrochemical workstation, as follows Figure 8 As shown, some other advanced products can gradually change from tens to thousands of ohms as the frequency changes, such as Figure 9 , while the contact impedance of ordinary dry electrodes is at the kilohm level, such as Figure 10 . It can be seen from the figure that in the low frequency band, the electrode contact impedance is about 1kΩ, and the impedance will decrease as the frequency increases, and its performance is stable and reliable;

[0068] In the present invention, the electrode of this type can be manufactured at a relatively low price, and the curved surface design of the electrode head can ensure comfort and avoid discomfort. Its low impedance can better guarantee the quality of the collected EEG...

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Abstract

The invention discloses a high-accuracy anti-oxidation electrode, and belongs to the field of high-accuracy electrodes. According to the high-accuracy anti-oxidation electrode, a base of the electrodeis made from aluminum, and the surface of the base is painted with a gold material coating; therefore, with the application of the treatment mode, the conductivity of an electrode main body is guaranteed, and oxidation resistance of the electrode main body is enhanced, so that the electrode can serve for a long time. An under-pan, which functions as fixing, is arranged at the outer side of the electrode main body, and a stable base is formed in the part, in correspondence to a lead hole, of an electroencephalogram cap, so that firm fixing can be guaranteed, and the electrode can be partiallydetached under such special situations that the number of leads is reduced and the like; therefore, modularization and professionalization are achieved.

Description

technical field [0001] The invention relates to the field of high-precision electrodes, and more specifically, relates to a high-precision anti-oxidation precision electrode. Background technique [0002] EEG electrodes are contact terminals used to collect EEG signals, usually in contact with the scalp. With the help of conductive paste, the EEG electrodes can transmit the EEG signals in the hair area to the collection equipment, thereby making the EEG Further analysis of the signal becomes possible. The basic requirements are: the material itself must have good electrical signal conductivity, be able to better combine with the corresponding holes of the EEG cap, resist oxidation and the price should not be too expensive, the operation should be convenient, time-saving, easy and comfortable to wear, etc. . [0003] In the acquisition of EEG signals, two kinds of electrodes, dry and wet, are used according to different situations. At present, dry electrodes can be mainly u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/0478
CPCA61B5/291
Inventor 胡斌赵庆林彭宏
Owner LANZHOU UNIVERSITY
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