Moisture-retention microneedle matrix array surface bioelectric electrode

Abstract

The invention relates to a moisture-retention microneedle matrix array surface bioelectric electrode.The moisture-retention microneedle matrix array surface bioelectric electrode comprises an electrode body, a signal processing module, a heat-transfer insulating thin film layer and an ultra-thin hook and loop fastener or a self-attachment thin film and is constructed through a 3D or die casting mode.The electrode body is a hollow cylinder or elliptic cylinder and is internally provided with a cavity used for storing liquid electrolyte, a solid or hollow microneedle array is distributed on the upper surface of the electrode body, a series of micropores are formed between microneedles, the surface of the electrode body is plated with silver, gold or platinum and other conductive metal through a chemical plating method, an electrochemical deposition method, a vacuum evaporation method or a magnetron sputtering method or other methods, the back side of the electrode body is provided with the signal processing module provided with a voltage follower, and a voltage follower circuit is encapsulated by heat-transfer insulating glue and attached to the ultra-thin hook and loop fastener or the self-attachment thin film.The moisture-retention microneedle matrix array surface bioelectric electrode has the denoising and moisture retention functions, and improves stability of bioelectric signal acquisition.

Description

technical field [0001] The invention relates to the technical field of bioelectricity, in particular to a bioelectric electrode on the surface of a moisturizing microneedle matrix array. Background technique [0002] In medical diagnosis and research, it is necessary to measure and record the potential in the body of the examiner, and it is necessary to use electrodes to contact the human body when performing bioelectricity monitoring. [0003] At present, the electrodes widely used in clinical practice are disposable Ag / Agcl electrodes with conductive paste. The dynamic acquisition of physiological signals is usually by directly pasting the electrode pads on the corresponding detection parts of the body, and then transmitting the physiological signals to the signal processor through wires. This type of method has the following disadvantages: [0004] (1) It is necessary to use conductive paste to stick the electrode sheet on the skin. The presence of conductive paste will ...

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Problems solved by technology

[0004] (1) It is necessary to use conductive paste to stick the electrode sheet on the skin. The presence of conductive paste will make some subjects feel uncomfortable, and even cause symptoms such as skin allergies, ulceration or inflammation

[0005] (2) Due to the existence of conductive paste, if it is used for long-term physiological signal monitoring, on the one hand, the conductive paste will gradually dehydrate and dry, which will easily cause the electrode to fall off and the sharp change of contact impedance, which will affect the stability of the signal

[0006] (3) Since the Ag / Agcl electrode with conductive paste is easy to fall off, it can only be used for clinical measurement, and it cannot realize the collection and monitoring in real-time conditions such as sports

[0007] (4) Disposable Ag / Agcl electrodes with conductive paste are discarded after one use, and the cost is higher when used

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