Bio-electricity signal collecting device

Abstract

The invention discloses a bio-electricity signal collecting device. The bio-electricity signal collecting device comprises a support body, as well as an electrode mounted on the support body, and a lead, wherein an electrode positioning hole is formed in the support body; the electrode comprises a fixing ring, and a conducting resin cavity having two open ends and being communicated is formed in the middle of the fixing ring; an electrode sensing layer is arranged on the inner wall of the conducting resin cavity, is an annular face with a gap, and is connected with the lead; a fixing groove is formed in the outer cylindrical surface of the fixing ring, and is used for embedding the periphery of the electrode positioning hole and fixing the electrode and the support body; the electrode sensing layer is the annular face with the gap, and is serially connected with a safety resistor, thus being safe to the human body; the electrode sensing layer is positioned on the inner wall of the conducting resin cavity, therefore, no cleaning dead angle exists, and the cleaning is convenient.

Description

technical field [0001] The invention belongs to the technical field of bioelectrical signal detection and transmission, in particular to an EEG signal acquisition device, especially suitable for functional magnetic resonance-EEG (fMRI-EEG), transcranial magnetic stimulation-EEG (TMS-EEG), Magnetoencephalography-EEG (MEG-EEG) was collected simultaneously. Background technique [0002] Common bioelectrical signals mainly include ECG, EEG, EMG, etc. These body surface bioelectrical signals can usually be collected through electrodes, amplified by appropriate bioelectrical amplifiers, and recorded as ECG, EEG, EMG, etc. It is widely used in clinical diagnosis, scientific research and personal physiological signal monitoring, wearable devices and other fields. [0003] EEG monitoring 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...

AI Technical Summary

Problems solved by technology

[0005] (1) The electrode sheet or electrode column is usually made of Ag / AgCl powder crimped or Ag sheet coated or coated with AgCl, the process is complicated and the cost is high;

[0006] (2) The electrode sheet or electrode column needs to be fixed, usually through the elastic extrusion of the silicone cap, but the electrode sheet or electrode column may be separated from the cavity after repeated use, or fixed by epoxy and other adhesives, and the process is complicated;

[0007] (3) Since the electrode sheet or electrode column will occupy the volume of the conductive glue cavity, it is easy to leave a cleaning dead angle, which is inconvenient to clean

[0008] The detachable electrode cap design is generally composed 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, but due to the two-part design of the fixed ring and the electrode head, it is limited 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

[0009] In addition, the height of the existing electrodes is too high and uncomfortable to wear, so it is not suitable for EEG measurement while lying down, such as EEG measurement under functional magnetic resonance (fMRI) and MEG (magnetoencephalography)

The existing electrodes use electrode columns and electrode sheets, which are prone to induced currents and are not safe for the human body, so they are not suitable for simultaneous acquisition of EEG-fMRI, EEG-TMS, and MEG-EEG

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