Invasive inclined needle skin-painless dry electrode device for recording electro-physiological signals for long term

Abstract

The invention relates to an invasive inclined needle skin-painless dry electrode device for recording electro-physiological signals for a long term, comprising an electrode base and a plurality of micro needle bodies, wherein the electrode base is round, elliptical or polygonal; and the micro needle bodies comprise front ends and rear ends, are fixed on the electrode base at a preset angle and distributed in a spiral matrix. The structure changes the traditional directly-inserted needle-shaped dry electrode structure, increases the contacted area of an electrode and the skin, and can reduce the contact impedance and improve the quality of extract electro-physiological signals. The structure can insert in a precession way, is beneficial to controlling the inserting depth and cannot cause testers with thin epidermis to generate pain feeling. The micro array of the structure has a certain angle, is free from influencing the insertion and can prevent a skin dry electrode from dropping off.

Description

technical field [0001] The invention relates to the field of electrode sensor design and processing for bioelectrical signal detection, and more particularly relates to a skin dry electrode device for long-term recording of skin surface biopotentials. Background technique [0002] Biopotential signal is one of the most important physiological parameters, which can be used in clinical diagnosis, patient monitoring and biomedical research, etc. Therefore, it is of great significance to effectively detect and study physiological electrical signals. Most of the physiological electrical signals are obtained under the condition that the electrodes are in contact with the human body (body surface or intervention), and the performance of the electrodes will directly affect the success or failure of signal acquisition. [0003] The stratum corneum, the outermost layer of the skin, is non-conductive, and effective physiological electrical signals can only be extracted through the der...

AI Technical Summary

Problems solved by technology

The application of conductive paste cannot be recorded for a long time, otherwise it will cause side effects such as skin ulceration or allergies to the subjects

Since it is difficult to rely on the design of the instrument to ensure that the contact interface between the electrode, conductive paste, and skin remains stable, it is easy to generate interference from baseline drift or motion artifacts, which will affect the test results

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