Arrayed flexible electroencephalogram dry electrode capable of overcoming obstacle of hair and preparation method thereof

Abstract

An arrayed flexible electroencephalogram dry electrode capable of overcoming obstacle of hair and a preparation method thereof belong to the technical field of medicine and are used for acquiring electroencephalogram signals. The flexible electroencephalogram dry electrode comprises a base and a contactor array extending from the base, a conductive metal film layer is arranged on the surface of the flexible electroencephalogram dry electrode, the contactors can be plugged into hair to reach the germinative layer so as to acquire the electroencephalogram signals. The dry electrode with excellent flexibility can contact with scalp well and can acquire the electroencephalogram signals well by existing processes and mechanical structures of MEMS (micro-electromechanical systems). Compared with the conventional wet electrode, the dry electrode can be used for long-term detection of the electroencephalogram signals without the preparation step of skin. Besides dry electrode which is small and flexible has high comfortableness and safety, is convenient and quick in use, low in noise to the external, and capable of completing high-quantity recording of microvolt-electroencephalogram signals.

Description

technical field [0001] The invention relates to a device in the field of biomedicine, in particular to an array type flexible EEG stem electrode capable of overcoming hair disorders and a preparation method thereof. Background technique [0002] Human tissue cells are always producing very weak bioelectrical activities spontaneously and continuously. Electrodes placed on the scalp are used to draw out the electrical activity of brain cells, and after being amplified by an EEG machine, they are recorded on a special paper, and a graph and curve with a certain waveform, amplitude, frequency and phase can be obtained, which is called the brain. Electrogram. When pathological or functional changes occur in brain tissue, this curve will change accordingly, thus providing a basis for clinical diagnosis and treatment. [0003] In recent years, with the continuous development and maturity of Micro-Electro-Mechanical Systems (MEMS: Micro-Electro-Mechanical Systems) technology, the ...

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Problems solved by technology

[0005] At present, there are two main problems in the dry electrodes for collecting EEG signals: one is that when collecting EEG, the hair of the human body forms an obstacle to the placement of the brain electrodes, making it difficult to collect EEG signals in areas with hair. How to break through the hair barriers are a key issue

The second is that the dry electrodes used to collect EEG are rigid, which is very uncomfortable and potentially dangerous to the user

However, for the EEG acquisition of the hair region, the electrode structure in this paper is difficult to overcome the barrier of the hair, and cannot effectively collect the EEG signals of the hair region

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