EEG collection device

Abstract

The invention provides an EEG collection device which comprises an EEG collection electrode and an electrode fixing frame used for fixing the EEG collection electrode. The EEG collection electrode comprises a fixing plate, a thrusting needle set, a squeezing plate and a power source. The electrode fixing frame comprises a head loop and four fixing arc plates. Each fixing arc plate is provided with an elastic installation plate. The elastic installation plates are perpendicular to the corresponding fixing arc plates and extend downwards and obliquely. The outer ends of the elastic installation plates of the adjacent fixing arc plates are fixed to the same fixing plate. According to the EEG collection device, conductive needles are pressed on the scalp by penetrating through hair under the elastic effect of the elastic installation plates, and therefore the poor contact phenomenon is avoided. Through the cooperative effect of the EEG collection electrode and the electrode fixing frame, EEG can be stably and accurately detected, the requirement for a detector is greatly lowered, and the detector even can freely move.

Description

technical field [0001] The invention relates to a medical device, in particular to an electroencephalogram signal acquisition device. Background technique [0002] EEG measurement is a common medical diagnosis method, and physiological and pathological information can be obtained by collecting EEG signals. EEG measurements can also provide an important source of EEG signals for emerging wearable devices. EEG measurement is to place electrodes at a certain position on the head to accurately acquire weak EEG signals, and collect, amplify, process and record the EEG signals through EEG equipment such as EEG. [0003] At present, the EEG signal acquisition electrodes can be divided into three types: the first is columnar electrodes, which are large-volume columnar electrodes, and each columnar electrode is inserted into the mesh electrode cap one by one. The barrier makes it difficult for the electrodes to be closely attached to the scalp, which affects the inspection effect. ...

AI Technical Summary

Problems solved by technology

[0003] At present, EEG signal acquisition electrodes can be divided into three types: the first type is columnar electrodes, which are large-volume columnar electrodes, and each columnar electrode is inserted into the mesh electrode cap one by one. The barrier makes it difficult for the electrodes to be close to the scalp, which affects the inspection effect. The columnar click is bulky, and it is easy to fall from the mesh electrode cap when the head is shaken. It is not suitable for long-term brain examinations.

The disadvantage is that the paste process needs to be peeled off the hair one by one, which is time-consuming and labor-intensive. The electrode paste or collodion will often cause damage to the patient's scalp. At the same time, even if the hair is peeled off, it will still stick under the disc electrode when pasting. A lot of hair, affecting the inspection results

The third is to pre-fix the metal disk electrode in the electrode cap. The disadvantage is that due to the individual differences in the patient's head circumference, the position of each electrode in this electrode cap is fixed, which is difficult to match the international standard of 10. -20 standard, and due to the obstruction of the hair, it is difficult for the electrode to be closely attached to the scalp, which affects the inspection effect

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