CN212326420U

CN212326420U - Contact surface self-adaptive electroencephalogram dry electrode

Info

Publication number: CN212326420U
Application number: CN202022246912.0U
Authority: CN
Inventors: 王阳; 裴为华; 吴晓婷
Original assignee: Jiangsu Jicui Brain Machine Integration Intelligent Technology Research Institute Co Ltd
Current assignee: Jiangsu Jicui Brain Machine Integration Intelligent Technology Research Institute Co Ltd
Priority date: 2020-10-10
Filing date: 2020-10-10
Publication date: 2021-01-12
Anticipated expiration: 2030-10-10

Abstract

The utility model provides a contact surface self-adaptation brain electricity dry electrode, including bottom plate, base, a plurality of electrode, run through on the base and be provided with a plurality of installation passageways that are used for installing the electrode, contact surface self-adaptation brain electricity dry electrode is still including setting up the elastic membrane structure between base and bottom plate. The utility model discloses in use dry electrode, loaded down with trivial details process and the remaining discomfort in a large number of conductive paste when having avoided wet electrode to use, use the elastic membrane structure, comfort level when having guaranteed electrode and scalp contact, use many electrode posts, can make the front end of electrode arrange according to the shape automatic adjustment of contact surface, can adapt to the scalp shape automatically in the use, electrode structure is small and exquisite light, be applicable to the contact surface condition of various complicacies, make the contact of electrode front end and scalp more abundant when guaranteeing the comfort level, thereby obtain the best contact impedance.

Description

Contact surface self-adaptive electroencephalogram dry electrode

Technical Field

The utility model belongs to the technical field of artificial intelligence, especially, relate to a contact surface self-adaptation brain electricity dry electrode.

Background

The electrodes are media for transmitting electroencephalogram signals to an external system, and two common electroencephalogram collecting electrodes are provided, one is a wet electrode, and the other is a dry electrode. When the wet electrode is used, due to the cooperation of the conductive paste, the wet electrode generally has lower electrode/tissue interface impedance, so that the electric signal acquisition quality is better. However, it has several disadvantages: firstly, the use preparation time is long, the conductive paste needs to be injected into the electrodes one by one, and one person is difficult to wear the electrodes independently; secondly, after the electrode is used by a testee, the hair and scalp parts have serious conductive adhesive residues which can be removed only by washing the hair, thereby causing great inconvenience to the testee; and thirdly, the method is not suitable for long-term chronic electrophysiological signal monitoring, and the conductive liquid can gradually volatilize and evaporate along with the time lapse, so that the skin-electrode interface impedance is increased.

The dry electrode technology has the advantages that the dry electrode technology does not need to be matched with conductive paste for use, can be worn and used immediately, does not need to be cleaned after use and the like, and is a key technology for the brain-computer interface technology from the laboratory to the application. The existing scalp dry electrode mostly adopts a columnar or comb-shaped structure, and aims to penetrate through hair and contact with the scalp. However, in actual use, the impedance of the scalp dry electrode is often high and is easily affected by pressure due to the absence of conductive paste assistance, non-planar scalp, interference of hair on the contact surface, and the like. At present, most of the columns of comb-shaped or columnar electrodes are made of hard materials, and are not adjustable and compressible. Therefore, the contact surface formed by the columns is fixed, and when the contact surface is contacted with the scalp, each electrode column cannot be guaranteed to be well contacted with the curved scalp. Some electrodes have adopted the spring structure, solve the problem of contact compactness and comfort level through the mode of placing the spring in the electrode rear, but the too big or the comparatively complicated condition of curved surface of contact surface camber can't be adapted to this kind of structure, uses the volume and the weight of spring meeting greatly increased dry electrode moreover.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a contact surface self-adaptation brain electricity dry electrode that can adapt to scalp shape automatically.

In order to realize the above-mentioned purpose, the utility model provides a contact surface self-adaptation brain electricity dry electrode, including bottom plate, base, a plurality of electrode, run through on the base and be provided with a plurality of installation passageways that are used for installing the electrode, contact surface self-adaptation brain electricity dry electrode is still including setting up the elastic membrane structure between base and bottom plate.

As a further improvement of the present invention, the elastic membrane structure includes an elastic membrane layer and a conductive layer, and the conductive layer is located above the elastic membrane layer.

As a further improvement of the utility model, the material of the conductive film layer is a silver fiber layer.

As a further improvement of the utility model, the material of the elastic film layer is a rubber layer or a silica gel layer.

As a further improvement of the present invention, the electrode includes an upper connection section and a lower connection section.

As a further improvement of the present invention, the upper connection section and the lower connection section are both cylinders, wherein the diameter of the lower connection section is greater than the upper connection section, and the upper connection section and the lower connection section are connected in a coaxial manner.

As a further improvement of the utility model, the tail end of the upper connecting section is provided with a hemispherical contact point.

As a further improvement of the utility model, the diameter of the installation channel is larger than the diameter between the upper connecting section and the lower connecting section.

As a further improvement of the present invention, the edge of the conductive film layer is provided with a protrusion for outputting an electrode signal.

As a further improvement of the utility model, be provided with a plurality of matching be used for fixed mounting pilot hole together on bottom plate and the base, the bottom plate is the ring form.

Compared with the prior art, the utility model discloses possess following beneficial effect:

the utility model discloses in use dry electrode, loaded down with trivial details process and the remaining discomfort in a large number of conductive paste when having avoided wet electrode to use, use the elastic membrane structure, comfort level when having guaranteed electrode and scalp contact, use many electrode posts, can make the front end of electrode arrange according to the shape automatic adjustment of contact surface, can adapt to the scalp shape automatically in the use, electrode structure is small and exquisite light, be applicable to the contact surface condition of various complicacies, make the contact of electrode front end and scalp more abundant when guaranteeing the comfort level, thereby obtain the best contact impedance.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a front view of the contact surface self-adaptive electroencephalogram dry electrode of the present invention;

fig. 2 is an explosion diagram of the contact surface self-adaptive electroencephalogram dry electrode of the utility model.

Detailed Description

The present invention will be described in detail below with reference to embodiments shown in the drawings. However, the present invention is not limited to the embodiments, and the structural, method, or functional changes made by those skilled in the art according to the embodiments are all included in the scope of the present invention.

The embodiment provides a contact surface self-adaptive electroencephalogram dry electrode, as shown in fig. 1-2, which comprises a bottom plate 1, a base 2, a plurality of electrodes 3, a plurality of installation channels 4 for installing the electrodes 3, and an elastic membrane structure 5 arranged between the base 2 and the bottom plate 1.

The elastic film structure 5 includes an elastic film layer 51 and a conductive layer 52, and the conductive layer 52 is located above the elastic film layer 51. The conductive film layer 51 is made of a silver fiber layer, and the elastic film layer 52 is made of a rubber layer or a silica gel layer. In this embodiment, the elastic film structure is preferably layered and disposed as a conductive layer and an elastic film layer, and the two layers are combined, but in other embodiments, the elastic film structure may be directly coated with a coating layer having conductive properties, or the material of the conductive film layer may be compounded to directly provide excellent elasticity. In the embodiment, the conductive layer has certain elasticity, and an additional elastic film layer is added to effectively increase the overall elastic recovery effect, and in addition, sufficient supporting force is added to the conductive layer to prevent the electrode from piercing through the conductive layer due to overlarge stress.

The electrode 3 includes an upper connection section 31 and a lower connection section 32, both the upper connection section 31 and the lower connection section 32 are cylindrical, wherein the lower connection section 32 has a larger diameter than the upper connection section 31, and the upper and lower connection sections are connected in a coaxial manner. The end of the upper connecting section 31 is provided with a hemispherical contact point 33. The diameter of the installation channel is larger than the diameter between the upper connecting section and the lower connecting section. The setting of the upper and lower section cylinders that adopts in this embodiment to through the setting to the diameter of upper and lower section cylinder and installation passageway, can be effectively with electrode fixed mounting between base and conducting layer, set up to the matching of the length of lower connection segment through the height to the base in addition, for example, set up to the same length, can effectually guarantee the effective contact of electrode and conducting layer. In other embodiments, the upper and lower ends of the electrode may have other shapes, and the base may adjust the mounting passage according to the shape of the electrode.

In the present embodiment, the conductive layer 52 is provided with a protrusion 53 at the edge for outputting an electrode signal, and before use, an effective and reliable electrical connection can be formed only after an external signal connector is in contact connection with the protrusion. The bottom plate and the base are provided with a plurality of matched assembling holes 6 which are fixedly arranged together, and the bottom plate is circular. In the present embodiment, in order to give a large elastic return stroke to the elastic film layer, the middle of the bottom plate is hollowed out, and a shape of a regular circle is provided. However, in other embodiments, the bottom plate may be directly closed by increasing the thickness of the elastic film layer, and the elasticity of the electrode may be controlled by only the thickness of the elastic film.

It should be understood that although the terms first, second, third, etc. may be used in one or more embodiments of the present description to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of one or more embodiments herein. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.

The above description is only for the purpose of illustrating the preferred embodiments of the one or more embodiments of the present disclosure, and is not intended to limit the scope of the one or more embodiments of the present disclosure, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the one or more embodiments of the present disclosure should be included in the scope of the one or more embodiments of the present disclosure.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A contact surface self-adaptive electroencephalogram dry electrode comprises a bottom plate, a base and a plurality of electrodes, and is characterized in that: the contact surface self-adaptive electroencephalogram dry electrode comprises a base, a plurality of installation channels for installing electrodes are arranged on the base in a penetrating mode, and an elastic membrane structure is arranged between the base and a bottom plate.

2. The contact surface adaptive electroencephalogram dry electrode of claim 1, characterized in that: the elastic membrane structure comprises an elastic membrane layer and a conducting layer, wherein the conducting layer is located above the elastic membrane layer.

3. The contact surface adaptive electroencephalogram dry electrode of claim 2, characterized in that: the conducting layer is made of a silver fiber layer.

4. The contact surface adaptive electroencephalogram dry electrode of claim 2, characterized in that: the elastic film layer is made of a rubber layer or a silica gel layer.

5. The contact surface adaptive electroencephalogram dry electrode of claim 1, characterized in that: the electrode includes an upper connection section and a lower connection section.

6. The contact surface adaptive electroencephalogram dry electrode of claim 5, wherein: the upper connecting section and the lower connecting section are both cylinders, wherein the diameter of the lower connecting section is larger than that of the upper connecting section, and the upper connecting section and the lower connecting section are connected in a coaxial mode.

7. The contact surface adaptive electroencephalogram dry electrode of claim 6, wherein: the tail end of the upper connecting section is provided with a hemispherical contact point.

8. The contact surface adaptive electroencephalogram dry electrode of claim 6, wherein: the diameter of the installation channel is larger than the diameter between the upper connecting section and the lower connecting section.

9. The contact surface adaptive electroencephalogram dry electrode of claim 2, characterized in that: and a protruding part for outputting an electrode signal is arranged at the edge of the conducting layer.

10. The contact surface adaptive electroencephalogram dry electrode of claim 1, characterized in that: the bottom plate and the base are provided with a plurality of matched assembling holes for being fixedly installed together, and the bottom plate is annular.