Electroencephalogram electrode

An electroencephalogram and electrode technology, applied in the field of electroencephalogram electrodes, can solve the problems of insufficient conductive liquid on the electrode surface, poor contact between the electrode and the scalp, and prolong the test time of patients, so as to save manpower, novel structure, and less distortion and interference Effect

Active Publication Date: 2012-06-27
干沁怡
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For electrodes soaked in sodium chloride solution, if the external joint of the electrode is not made of the same metal as the electrode, it is easy to be replaced and cause corrosion, so the service life is short
[0005] 2. The EEG measurement takes a long time, about 20-30 minutes. Due to the influence of human body temperature, the conductive liquid dries up due to volatilization, which makes the contact between the electrode and the scalp poor, and the recording baseline drifts.
Sometimes in order to make the measurement accurate, it is necessary to add conductive liquid halfway, which prolongs the test time of the patient and affects the quality

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0030] refer to Figure 1-2 , an electroencephalogram electrode, mainly including electrode sheet 1, gauze 2, O-shaped sealing ring 3, liquid storage channel 4, cotton 5, liquid storage tank 6, liquid storage tank cover 7, electrode shell 8, pure silver Joint 9, silver wire 10, lead channel 11, fixing frame 12 and positioning plate 13, electrode sheet 1 is embedded in the bottom of electrode housing 8, electrode sheet 1 is fixedly connected to one end of silver wire 10, that is, when making electrode sheet 1 , which is to embed one end of the silver wire 10, press and sinter together, the electrode sheet 1 is welded with the pure silver joint 9 through the silver wire 10 through the lead channel 11, and the liquid storage tank 6 is provided with a liquid storage tank channel 4, the liquid storage The tank 6 is located above the electrode piece 1 and put into the electrode housing 8. The liquid storage tank cover 7 is suitable for the liquid storage tank 6. A groove and an O-ri...

Embodiment 2

[0034] see Figure 3-4 , when not in use at ordinary times, arrange the single EEG electrode of embodiment 1 in the electrode placement groove 14, make the gauze, cotton and liquid storage tank in the electrode all absorb the conductive liquid, the electrode potential is in the most stable state, measure There is less distortion and interference of the EEG when it is used, and when it is needed to use, the electrode can be taken out for testing. If not for a long time, in order to prevent the conductive liquid from drying, the electrode placement groove 14 is put into the sealed box 15, and the lid 16 is sealed to prevent the conductive liquid from volatilizing. During the test, the electrodes are placed on the scalp of the human body through the positioning board 13 .

Embodiment 3

[0036] 1. Using the EEG electrode of the present invention (referred to as H14 electrode) and Medtronic (Medtronic), Ref.9013E1321 EEG electrode (abbreviated as imported electrode) for comparative study, select 12 healthy subjects, according to gender, age They were randomly divided into 2 groups, 6 people in each group. Enter the H14 electrode set and the imported Medtronic electrode set respectively. This group of electrodes was used to conduct EEG examination with two kinds of conductive liquid (2% Nacl solution or compound conductive liquid) respectively, and a total of 24 EEG images were obtained for the following comparative analysis. The general conditions of the two groups of people are shown in Table 1. All statistics were analyzed using SPSS 16.0. In the general situation of patients, chi-square test was used for gender comparison, independent sample t test was used for age comparison between two groups, and repeated detection mean test was used for impedance data ...

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Abstract

The invention provides an electroencephalogram electrode. The electroencephalogram electrode comprises an electrode sheet, a gauze, an O-shaped sealing ring, a liquid storing groove passage, cotton, a liquid storing groove, a liquid storing groove cover, an electrode shell, a pure silver connector, a silver wire lead, a lead passage, a fixing frame and a positioning plate, wherein the electrode sheet is embedded into the bottom of the electrode shell and is welded with the pure silver connector through the lead passage by the silver wire lead; the liquid storing groove provided with the liquid storing groove passage is accommodated in the electrode shell; a groove is formed in the bottom of the electrode shell and is matched with the O-shaped sealing ring; the cotton is arranged in the liquid storing groove and is extended to the surface of the electrode sheet; the gauze is covered on the cotton on the surface of the electrode sheet; and the electrode shell is connected with the fixing frame and the positioning plate. The electroencephalogram electrode is reasonable in structural design, low and stable in electrode impedance, stable in impedance of electrode surface and skin, low in noise and good in effect; base line drift is reduced; and conducting liquid is not required to be implemented in a test process, so detection speed is increased. Because the cover is added to seal, so the conducting liquid placed for a long time is prevented from being volatilized.

Description

technical field [0001] The invention belongs to the technical field of medical devices and relates to an electroencephalogram electrode. Background technique [0002] An EEG is the electrical activity of brain cells picked up at specific locations by electrodes placed on the surface of the scalp. Bioelectricity refers to various potentials or currents generated in organisms during life activities. But organisms are ionic conductors. To measure the bioelectrical signals of ionic conductors, a pair of electrodes must be used to convert the signals of ionic conductors into electronic conductor signals, which can then be transmitted to the input terminal of the measuring instrument for amplification and recording. How to improve the stability of electroencephalogram signal (EEG) and reduce the artifacts of the instrument is one of the effective means to accurately reflect the patient's intracranial organic disease. [0003] Existing EEG electrodes are mainly composed of electr...

Claims

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Application Information

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IPC IPC(8): A61B5/0478
Inventor 干沁怡
Owner 干沁怡
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