EEG electrode cap

Abstract

The invention relates to an EEG electrode cap, comprising a cap body, an electrode and a lead wire; the electrode includes a fixing ring, an electrode sheet and a bonding sealant; the middle part of the fixing ring has a cavity with both ends open and connected, and the electrode is arranged in the cavity Sheet positioning table, the electrode sheet is placed on the electrode sheet positioning table; one side of the electrode sheet is fixed with the inner wall of the fixed ring cavity by bonding sealant, and the other side is combined with the conductive adhesive in the conductive adhesive chamber; the outer cylindrical surface of the fixed ring There are fixed grooves for fixing the electrode and the cap body; after the adhesive sealant is cured, there is a conductive glue hole connected to the conductive glue chamber; the electrode sheet and the lead wire passing through the lead wire hole on the fixing ring line connection. The advantages of the present invention are: the integrated design of the electrode sheet and the fixing ring is convenient for skin pretreatment, glue injection and glue replenishment; convenient and reliable positioning, close fit with the scalp, comfortable to wear, especially suitable for high density, long-term sleep, brain magnetism Figure and EEG measurement in MRI environment.

Description

technical field [0001] The invention relates to an electroencephalogram electrode cap, which is particularly suitable for matching with electroencephalogram equipment or devices such as electroencephalogram signal acquisition and display and / or drawing and transmission electroencephalogram, and belongs to the technical field of bioelectric signal detection and transmission. Background technique [0002] EEG measurement is a common medical diagnosis method, and physiological and pathological information can be obtained through EEG signals. EEG measurements could also provide an important signal source for emerging wearable devices. EEG measurement is to place electrodes at a certain position on the head, form a stable micro-electric detection channel through conductive glue, accurately obtain weak bioelectricity, and collect the bioelectricity activity of the human head through electroencephalograph and other EEG equipment , amplification, signal processing, display and reco...

AI Technical Summary

Problems solved by technology

[0004] (1) Because the height of the silicone cap is too high, the subject is uncomfortable to wear during sleep EEG monitoring, so it is not suitable for sleep or long-term EEG measurement;

[0005] (2) Due to the high height of the silicone cap, there may be cases where the silicone cap does not fit the scalp, resulting in inconsistent impedance at each point of the electrode cap, which affects the measurement accuracy;

[0006] (3) Since the injection hole of the silicone cap and the electrode sheet is very small, it is inconvenient to pretreat the skin and inject the electrode. At the same time, it is also inconvenient to observe the contact between the electrode and the conductive adhesive and the contact between the conductive adhesive and the skin. Long preparation time, especially for high-density EEG measurements

[0007] At present, there is also a detachable electrode cap design, which generally consists of a fixed ring and a detachable electrode head. The advantage of this design is that the position and number of electrodes can be adjusted according to the measurement needs. However, due to the use of two Partial design, which limits the design space for the entire electrode height

In addition, after repeated disassembly and installation, the fixing of the electrode head and the fixing ring and the surrounding cap body will become loose, which will affect the service life of the electrode cap

In addition, NMR and MEG measurements require EEG electrodes to be light and thin. The products in the prior art make the subjects uncomfortable to wear, and the electrodes do not fit well with the skin.

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