Flexible bioelectric dry electrode and manufacturing method thereof, and manufacturing method of flexible substrate film

Abstract

According to the invention, a solution of a flexible substrate material is filled with the gas to form bubbles, then the bubble film is separated from the solution and is rapidly cured at room temperature, therefore a flexible substrate thin film is simply and conveniently prepared by using the expansion bubble blowing method, the thickness of the flexible substrate thin film can be as low as 50nm, then a conductive metal film formed by spraying on a hard substrate is transferred to the flexible substrate film, and the thickness of a flexible bioelectric dry electrode formed by the conductive metal film and the flexible substrate film becomes extremely small. The prepared flexible bioelectric dry electrode is good in transparency and can make conformal contact with the skin surface, the resistance of the flexible bioelectric dry electrode is not affected by skin deformation, the contact impedance between the electrode and the skin is low, and it can be guaranteed that follow-up bioelectric signals are collected. The flexible bioelectric dry electrode is good in air permeability and provides comfortable wearing experience; the pain and skin irritation brought to people in the stripping process can be reduced on the premise that good attachment is achieved without a medical adhesive; and the manufacturing method is simple and low in cost.

Description

Technical field [0001] The present invention relates to the technical field of bioelectrone dry electrodes, and more particularly to a flexible bioelectron dry electrode and a method of fabricating a flexible substrate film. Background technique [0002] Physiological electricity is a human body when conducting physiological activities, due to the macroscopic performance of the potential difference caused by the cell wall inside and outside the cell wall. Heart, brain, and electromyrower are clinically common physiological telecommunications, these regular electrical signals are closely related to life status, the physiological and pathological features of human organization or organs can be parsed by physiological electrical signals. By collecting electrocardiogram, EEG and electromyography respectively detect heart disease, epilepsy, and muscle failure, respectively, it is currently generally used in clinical practice. Using physiological electrical signals to achieve gesture a...

AI Technical Summary

Problems solved by technology

However, the thickness of most dry electrodes in the prior art is relatively large, and the mechanical modulus does not match with the skin, resulting in too small contact area between the dry electrode and the skin, too large contact impedance and subsequent poor signal quality; These overly thick dry electrodes have poor ductility, and their resistance will change significantly when the skin to be tested is stretched and bent, which will interfere with the collection of bioelectrical signals; and these overly thick dry electrodes have poor air permeability , which limits the timely discharge of surface moisture and sweat of the skin to be tested, and long-term wearing will cause skin inflammation

This type of dry electrode has poor adhesion, and their combination with the skin surface relies on traditional medical adhesives, Velcro straps or elastic bandages for fixation, which also brings discomfort to users

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