Flexible semi-dry multi-layer structure electrode for collecting electroencephalogram

Abstract

The invention belongs to medical instruments and wearable electronic products, and relates to a flexible semi-dry electrode which is of a multi-layer structure and used for collecting electroencephalogram. The electrode comprises a flexible electrode body layer, a foam layer and a liquid storage layer. A flexible probe in the flexible electrode body layer is of an array sensor structure; a plurality of through holes for the flexible probe to run through are arranged on the conductive foam cotton in the foam layer, and the plurality of through holes are arranged in accordance with the arrangement of the flexible probe; electrolyte is stored in the liquid storage layer and the liquid storage layer is provided with a release assembly for releasing the electrolyte to the conductive foam cottonin the foam layer. The flexible electrode has the advantages of convenient use, comfort, reasonable structure, low impedance, long-term stability and reliability, flexibility and comfort and safety of wearing.

Description

technical field [0001] The invention relates to an electrode applied to medical equipment and wearable electronic products, in particular to a flexible semi-dry multi-layer structure electrode covered in the hair area for collecting brain electrical signals. Background technique [0002] Electroencephalogram signal (EEG) is an electrophysiological indicator for recording brain activity. It is formed by the sum of synchronous post-synaptic potentials of a large number of neurons. It can reflect the health status of the human body, cognitive activities and other information. , important parameters of human physiological research and clinical diagnosis of brain diseases, are increasingly applied to the fields of medical testing, clinical diagnosis and brain-computer interface, and provide diagnostic information for brain diseases such as dementia, epilepsy, tumors or brain death. Traditional wet electrodes are widely used in clinical and scientific research because of their low...

AI Technical Summary

Problems solved by technology

However, these dry electrodes have disadvantages such as high contact impedance, sensitivity to motion artifacts, and uncomfortable use due to too hard electrodes.

[0004] At present, some studies have designed semi-dry electrodes based on porous columns, but porous permeable columns are usually rigid materials, which have the disadvantage of being uncomfortable to wear

[0005] With the advent of the era of smart wearables, it is difficult for the existing electrode technology in hair-covered areas to meet the requirements of EEG acquisition in a pervasive environment

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