A bioelectric electrode on the surface of a moisturizing microneedle matrix array

Abstract

The invention relates to a surface bioelectric electrode of a moisture-retaining microneedle matrix array. The bioelectric electrode on the surface of the moisturizing microneedle matrix array includes an electrode body, a signal processing module, a thermally conductive insulating film layer, and an ultra-thin Velcro or self-adhesive film, which is constructed by 3D or model casting; the electrode body is a hollow cylinder Body or elliptical cylinder, with a cavity inside for storing liquid electrolyte, solid or hollow microneedle arrays are arranged on the upper surface, a series of micropores are distributed between the microneedles, through electroless plating, electrochemical deposition, vacuum Evaporation method or magnetron sputtering method is used to plate conductive metals such as silver, gold, or platinum on the surface of the electrode body. The back of the electrode body is a signal processing module with a voltage follower, and the voltage follower circuit is encapsulated by heat-conducting insulating glue. And stick on a piece of ultra-thin velcro or self-adhesive film. The bioelectric electrode on the surface of the moisture-retaining microneedle matrix array has the functions of noise reduction and moisture retention, and improves the stability of bioelectric signal collection.

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 ...

AI Technical Summary

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

Images