EEG (Electroencephalograph) electrode cap

Abstract

The invention relates to an EEG (Electroencephalograph) electrode cap. The EEG electrode cap comprises a cap body, electrodes and leading wires, wherein each electrode comprises a fixing ring, an electrode slice and a bonding sealant; a cavity of which two ends are opened and are communicated is formed in the middle part of each fixing ring, each cavity is internally provided with an electrode slice locating platform, and the electrode slices are arranged on the electrode slice locating platforms; one side of each electrode slice is fixed with the inner wall of the cavity of the corresponding fixing ring through the bonding sealant, and the other side of each electrode slice is combined with a conductive adhesive in a conductive adhesive chamber; fixing grooves are formed in the outer cylindrical surfaces of the fixing rings, and the fixing grooves are used for fixing the electrodes with the cap body; conductive adhesive filling holes which are communicated with the conductive adhesive chamber are formed in the bonding sealant after the bonding sealant is solidified; the electrode slices are connected with the leading wires penetrating through leading wire holes in the fixing rings. The EEG electrode cap disclosed by the invention has the advantages that the electrode slices and the fixing rings are integrally designed, and skin pretreatment, adhesive filling and adhesive supplementation can be conveniently carried out; the locating is convenient and reliable, the EEG electrode cap is tightly attached to the scalp, the wearing is comfortable, and the EEG electrode cap is particularly suitable for EEG measurement under the environment of high density, long sleep process, MEG (Magnetoencephalography) and nuclear magnetism.

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.

Images