Dry soft electrode based on direct-current magnetron sputtering technology and manufacturing process thereof

Abstract

The invention relates to the field of medical instruments, in particular to a dry soft electrode based on a direct-current magnetron sputtering technology. The dry soft electrode comprises a substrate, the substrate comprises a base and a plurality of needle electrodes arranged on the base, a conducting plate is arranged at the bottom of the base, the conducting plate is provided with a conducting line, the conducting plate and the base of the substrate are closely connected through a die sleeve, and the die sleeve is provided with a hole allowing the conducting line to pass through. The surface of the base is plated with a conducting layer. The invention further provides a manufacturing method of the dry soft electrode based on the direct-current magnetron sputtering technology. The dry soft electrode and the manufacturing method have the advantages that the reliability and sensitivity of brain signal collection are good; the coating of the electrode is high in adhesive force, even in attachment, and controllable in thickness and color; the electrode is soft, and good in comfort; ingenious structural design is achieved.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a dry-type soft electrode based on DC magnetron sputtering technology and a preparation process thereof. Background technique [0002] Internationally, companies such as EGI, g.tech, Cognionics, NeuroSky, ANT, EasyCap, etc. have developed, produced and sold dry electrodes and related products. The invention of dry electrodes has made a huge progress in brain wave acquisition technology. The classic dry electrode is made into a needle-like array to reduce skin impedance by pressing into or micro-invasively into the skin. The electrode material is pure gold, pure silver or sintered silver / silver chloride Ag / AgCl. [0003] However, it has the following two significant disadvantages (1) Structural disadvantages. The hard and sharp needle-like array penetrates into the stratum corneum of the scalp, which brings a certain tingling sensation to patients or subjects and easily causes inf...

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Problems solved by technology

[0003] However, it has the following two significant disadvantages (1) Structural disadvantages, the hard and sharp needle-like array penetrates into the stratum corneum of the scalp, which brings a certain tingling sensation to the patient or subject and is easy to cause infection

(2) Material disadvantages, gold and silver are heavy metals, suitable for use on the scalp surface, piercing the stratum corneum can easily cause heavy metals to enter the skin and blood, causing heavy metal poisoning

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