Different-plane microneedle array brain electrical dry electrode with controllable puncturing depth

Abstract

The invention relates to a different-plane microneedle array brain electrical dry electrode with controllable puncturing depth, which comprises an integral frame, a microneedle electrode and a microneedle electrode carrier, wherein the microneedle electrode is installed on the microneedle electrode carrier to form a different-plane microneedle electrode array, and the different-plane microneedle electrode array is inserted into the frame by a hole array on the frame; and moreover, the different-plane microneedle electrode array can carry out vertical movement in the frame. A small cylinder onthe frame is inserted into hair, the interference of the hair to the electrode is avoided, and the different-plane microneedle electrode array can be used for controlling the electrode to carry out the vertical movement in the frame so as to regulate a proper position for puncturing the scalp to reach the germinal layer of the skin by a control device. The different-plane microneedle array brain electrical dry electrode with the controllable puncturing depth is used for a brain electrode structure collecting a brain electrical signal. By utilizing a traditional micro-electro-mechanical system(MEMS) process and a traditional mechanical structure, the brain electrical signal can be collected very well. Compared with a traditional wet electrode, a skin preparing step is not needed, and the different-plane microneedle array brain electrical dry electrode with the controllable puncturing depth can be used for the long-time detection of the brain electrical signal. According to the different-plane microneedle array brain electrical dry electrode with the controllable puncturing depth, the structure is small and exquisite, the use is convenient and quick, external noise is reduced, and the high-quality recording of a microvolt level brain electrical signal can be finished.

Description

technical field [0001] The invention relates to a device in the field of biomedicine, in particular to a different-plane microneedle array EEG stem electrode with controllable penetration depth. Background technique [0002] In recent years, with the continuous development and maturity of micro-electro-mechanical systems (MEMS: Micro-Electro-Mechanical Systems) technology, the application range of micro-systems such as micro-electronic devices and micro-sensors has continued to expand, and has been widely used in civil, medical, military, etc. field. The research on needle-type microelectrodes based on micromachining technology has been developed rapidly. [0003] Microelectrode structures mainly include planar microelectrodes, heteroplanar microelectrodes, and microelectrodes that assemble planar microelectrodes into an array shape. These microelectrodes with different structures have their own characteristics. [0004] Traditional EEG signal acquisition equipment is base...

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to address the deficiencies and defects of the prior art, and propose a different-plane microneedle array EEG stem electrode with controllable penetration depth, which can All can quickly obtain reliable and stable EEG signals to solve the problem of being disturbed by hair when collecting EEG

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