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Electroencephalogram acquisition electrode based on electric conduction liquid

A technology for collecting electrodes and conductive liquids, which is applied in the fields of medical science, sensors, diagnostic recording/measurement, etc. It can solve the problems of difficult to realize automatic injection of multi-channel electrode conductive liquids, poor contact elasticity of the scalp, and short continuous use time, etc. Effective collection time, no discomfort in contact, and the effect of ensuring flexibility and sealing

Active Publication Date: 2018-11-06
BEIJING MECHANICAL EQUIP INST
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  • Abstract
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Problems solved by technology

[0003] In view of the above analysis, the embodiment of the present invention aims to provide a conductive fluid-based EEG acquisition electrode to solve the problem of time-consuming and cumbersome use of existing wet electrodes, short continuous use time, and difficulty in implementing multi-channel electrode conductive fluid. Technical problems such as automatic injection, poor contact elasticity with the scalp, and low comfort

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  • Electroencephalogram acquisition electrode based on electric conduction liquid
  • Electroencephalogram acquisition electrode based on electric conduction liquid

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Embodiment Construction

[0023] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the application and together with the embodiments of the present invention are used to explain the principle of the present invention and are not intended to limit the scope of the present invention.

[0024] A specific embodiment of the present invention discloses an EEG collection electrode based on conductive liquid, including a base 1, a housing 2, an electrode column 3, an inlet check valve 4, an outlet stop valve 5 and a wire 6; Stop valve 4 includes inlet pipe joint 7, inlet guide sleeve 8, inlet spool 9, inlet O-ring 10 and inlet spring 11; outlet stop valve 5 includes outlet pipe joint 12, outlet guide sleeve 13, outlet spool 14, outlet An O-ring 15 and an outlet spring 16; the electrode column includes a ball guide sleeve 17, a spherical body 18 and an electrode spring 19; the inle...

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Abstract

The invention relates to an electroencephalogram acquisition electrode based on an electric conduction liquid, belongs to the technical field of brain-computer interfaces, and solves the technical problems that in the prior art, in the use process, a wet electrode is time-consuming and tedious, the continuous use time is short, automatic injection of the electric conduction liquid of multi-channelelectrodes is difficultly achieved, the contact elasticity of the wet electrode and the scalp is poor, and the use comfort level is low. The electroencephalogram acquisition electrode based on the electric conduction liquid comprises a base, a shell, an electrode column, an inlet check valve, an outlet stop valve and a wire, wherein the inlet check valve and the outlet stop valve are arranged onthe two sides of the shell respectively, the electrode column is installed on the base, and a liquid storage cavity is defined by the base and the shell. The inlet check valve and the outlet stop valve can be constructed into a device for separating the electric conduction liquid in the liquid storage cavity from an external electric conduction liquid, and the situation that the electric conduction liquid is conductive to cause signal interference between the multi-channel electrodes can be prevented. By means of the electroencephalogram acquisition electrode, long-time effective acquisition and monitoring of electroencephalogram signals are achieved.

Description

technical field [0001] The invention relates to the technical field of brain-computer interface, in particular to a conductive fluid-based electroencephalogram acquisition electrode. Background technique [0002] At present, the commonly used wet electrodes for EEG collection mainly use conductive paste and conductive liquid as conductive media. The wet electrodes based on conductive liquid have the following two problems: First, the experimental preparation process is time-consuming and cumbersome, and requires the assistance of outsiders. It takes a lot of time and energy to manually inject conductive liquid into each collection position one by one, and the conductive liquid used will continue to evaporate and dry due to the influence of human body temperature and ambient temperature, which will increase the electrode impedance and reduce the quality of EEG signals. To realize the long-term effective collection and monitoring of EEG signals, the conductive liquid must be i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/0478
CPCA61B5/291
Inventor 贾正伟陈远方张利剑崔翔
Owner BEIJING MECHANICAL EQUIP INST
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