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Electrode depolarization device

A depolarization and electrode technology, applied in medical science, sensors, diagnostic recording/measurement, etc., can solve the problems affecting the quality of EEG and other signal acquisition, the enhancement of polarization phenomenon, and the inability to collect EEG signals.

Active Publication Date: 2008-07-23
SHENZHEN CHILDRENS HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, this kind of polar metal material cannot be used to collect EEG signals.
Because silver has no obvious polarization phenomenon, it is usually used as the electrode material of EEG, but as the use time increases, the polarization phenomenon of silver will increase, which will also affect the quality of signal acquisition such as EEG.

Method used

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  • Electrode depolarization device

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Embodiment 1, depolarization treatment The silver / silver chloride electrode used by domestic or imported electroencephalographs for recording electroencephalograms adopts a safe electrode lead adapter, silver rods are used as cathodes, and the DC power supply is 12V. Electrolyte adopts sodium chloride solution, its concentration is 0.9%, close switch, and initial ammeter reading shows as 5 milliamperes, after about 30 minutes, when ammeter reading shows as zero, depolarization is completed. Observing the appearance of the electrode with the naked eye, it is silvery white or light brown before polarization treatment, and purple brown after treatment, which is the silver chloride covering layer.

Embodiment 2

[0026] Example 2, depolarization treatment Domestic or imported electroencephalographs are used to record silver / silver chloride electrodes for electroencephalograms, using safety-type or needle-type electrode lead adapters, carbon rods as cathodes, and DC power supply The electrolyte is 9V, potassium chloride solution is used as the electrolyte, its concentration is a saturated solution, the switch is closed, and the ammeter reading starts to show 5 mA, and after about 30 minutes, when the ammeter reading shows zero, the depolarization is completed. Observing the appearance of the electrode with the naked eye, it is silvery white or light brown before polarization treatment, and purple brown after treatment, which is the silver chloride covering layer.

Embodiment 3

[0027] Embodiment 3, depolarization treatment Domestic or imported electroencephalographs are used to record the silver / silver chloride electrodes of electroencephalograms, using a safe electrode lead adapter, silver rods as cathodes, and a DC power supply of 12V. Electrolyte adopts hydrochloric acid solution, and its concentration is 0.9%, close switch, and initial ammeter reading shows as 5 milliamps, after about 30 minutes, when ammeter reading shows as zero, depolarization is completed. Observing the appearance of the electrode with the naked eye, it is silvery white or light brown before polarization treatment, and purple brown after treatment, which is the silver chloride covering layer.

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Abstract

The invention discloses an electrode depolarization device, the technical problem needs to be solved is to carry out the depolarization processing to the electrode which has the polarization phenomenon. The electrode depolarization device of the invention is provided with a DC power supply and an electrolytic cell, the interior of the electrolytic cell is filled with electrolyte, a positive electrode of the DC power supply is connected with an electrode lead adapter device, the electrode to be subject to the depolarization processing which is connected with the electrode lead adapter device and a cathode which is connected with a negative electrode of the DC power supply are immersed in the electrolyte. Compared with the prior art, the connection structure of the electrode to be subject to the depolarization processing which is connected with the electrode lead adapter device and the cathode which is connected with the negative electrode of the DC power supply is immersed in the electrolyte, so the depolarization processing of an electroencephalogram silver or sliver-silver chloride electrode which has the polarization phenomenon can be carried out, thereby improving the measurement quality of the electroencephalogram and the electrocardiogram and improving the diagnosis accuracy of the doctors on epilepsy, brain trauma, encephalitis, cerebrovascular diseases, intracranial space occupying lesions, heart diseases, and so on.

Description

technical field [0001] The invention relates to a medical device, in particular to a maintenance device for electroencephalogram, electrocardiogram, reference electrode and other equipment. Background technique [0002] Electrodes such as EEG are used to collect EEG signals and are usually made of metal materials with good electrical conductivity. However, when the metal material continues to pass through a direct current, charge accumulation occurs on the surface of the metal electrode due to an electrochemical reaction, resulting in an increase in time- and frequency-dependent resistance. Due to the presence of charge and polarity on the electrode surface, a direct current effect is generated, which produces a large baseline slow drift artifact after amplification. Therefore, this kind of polar metal material cannot be used for collecting EEG signals. Because silver has no obvious polarization phenomenon, it is usually used as the electrode material of EEG, but with the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/0478A61B5/04
Inventor 廖建湘王鑫娟李成荣
Owner SHENZHEN CHILDRENS HOSPITAL
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