WO2020147027A1

WO2020147027A1 - Electroencephalogram collecting cap

Info

Publication number: WO2020147027A1
Application number: PCT/CN2019/071894
Authority: WO
Inventors: 陈晓苏
Original assignee: 陈晓苏
Priority date: 2019-01-16
Filing date: 2019-01-16
Publication date: 2020-07-23

Abstract

Disclosed is an electroencephalogram collecting cap, belonging to the technical field of electroencephalogram collection. The problems, such as not being able to adjust the size thereof, and wearing and cleaning being troublesome, in the prior art are solved. The electroencephalogram collecting cap comprises a frame and a plurality of brain electrodes movably connected to the frame, wherein the frame comprises a cross-section full-annular head hoop (1), and a coronal-section semi-annular head hoop (2); the full-annular head hoop (1) and the semi-annular head hoop (2) respectively realize extension and retraction by means of a continuous retracting device; two ends of the semi-annular head hoop (2) are respectively fixed to the full-annular head hoop (1); and a tail end of each brain electrode is provided with a liquid storage device (3), a head end of each brain electrode is provided with a plurality of grippers (4), a conductive contact (5) is arranged at the position, in contact with the scalp, of each gripper (4), and the conductive contact (5) communicates with the interior of the liquid storage device (3). The electroencephalogram collecting cap can adapt to various types of head sizes, and at the same time, as the liquid storage device (3) is used, the electroencephalogram collecting cap can easily penetrate hair and make good contact with the scalp, thus conforming to the rules of ergonomic design and having a good practicability.

Description

EEG acquisition cap

Technical field

The utility model relates to the technical field of brain electricity collection, in particular to a brain electricity collection cap.

Background technique

EEG collection needs to meet two conditions: the first one needs to moisten the scalp, the resistance of the dry scalp is huge, and the EEG collection cannot be performed. After the scalp is moistened, the collection conditions can be met; the second condition is the entire process of EEG collection. The smaller the resistance in the system, the higher the acquisition accuracy and the more stable the electrical signal.

The most important thing in the EEG acquisition technology is the EEG acquisition cap. The existing EEG acquisition cap is similar to a swimming cap. The electrodes are all metal pieces embedded in the corresponding points. The metal pieces are used to collect EEG signals. However, the metal electrode is not easy to pass through the hair. Therefore, when performing brain electricity collection, it is necessary to fill the gap between the metal electrode and the scalp with a conductive paste after wearing the brain electricity collection cap.

The existing EEG acquisition cap has the following shortcomings:

1. The structural flexibility of swimming caps is limited. Different people have different head sizes and large spans. The same EEG cap cannot meet the size of everyone. If you want to experiment, you need to buy multiple sizes of EEG caps.

2. In the EEG collection, collection points are required. In the prior art, the EEG cap points are fixed. If the user needs fewer points, he can only purchase a multi-point EEG cap. Increase unnecessary costs. In addition, the existing EEG hats are relatively single in position, which cannot meet all experimental data collection, and multiple EEG hats need to be purchased, which increases the experimental cost.

3. Existing EEG caps need to make complicated preparations before experiments. When wearing EEG caps, conductive paste needs to be injected into the points to connect the metal electrodes with the scalp. It takes about an hour. When EEG is collected, two people are required to cooperate to complete the wearing, and because the fluidity of the conductive paste is not good, it is often necessary to repeatedly adjust to complete the wearing, which is time-consuming, labor-intensive and inefficient. In addition, after the experiment, cleaning the volunteers' heads also took a lot of time, and the volunteers did not have a good experimental experience.

Utility model content

In view of the above technical problems, the utility model provides one.

In order to achieve the above objectives, the present invention provides the following technical solutions:

An EEG acquisition cap, including a frame and a plurality of brain electrodes moving on the frame;

The frame includes a full-circular headband with a cross section and a semi-circular headband with a crown;

The full-circular headband and the semi-circular headband are respectively scaled and zoomed through a stepless shrinking device;

The two ends of the semi-annular headband are respectively fixed on the entire annular headband;

The tail of the brain electrode is provided with a liquid storage device, and the head of the brain electrode is provided with a plurality of grippers, and each gripper has a conductive contact point where the gripper contacts the scalp, and the conductive contact is communicated with the liquid storage device.

Further, the stepless shrinking device includes a hollow first sliding block and a first positioning knob, and the headband slides in the first sliding block and is restricted and fixed by the first positioning knob.

Further, there is a connecting part between the tail and the head of the brain electrode, and the connecting part is threadedly connected with the liquid storage device at the tail and the head with a gripper, and the connecting part is movably connected with the headband through a cantilever. One end of the cantilever is fixedly connected to the connecting part by a screw, and the other end of the cantilever is provided with a second sliding block which slides on the headband and is fixed by a second positioning knob.

Further, one end of the liquid storage device has a water outlet, the outer wall of the water outlet has an external thread, and one end of the connecting part has an internal thread matching the external thread.

Further, the number of the brain electrodes is set to be multiple, which are distributed on the front side and the back side of the brain electricity collecting cap.

Further, the conductive contact has multiple holes or single holes.

Further, there are three grippers.

Further, the conductive contact is made of metal or non-metal conductive material, or a conductive material mixed with metal and non-metal, or a mixed metal or non-metal conductive fabric material.

Compared with the prior art, the beneficial effects of this utility model are:

The brain electricity collection cap provided by the utility model realizes the adjustment of the size of the headband on the cross section and the coronal plane through a plurality of stepless shrinking devices, which can adapt to various head sizes, and adopts a semi-wet electrode design and a liquid storage device. It is easy to pass through the hair and form good contact with the scalp. It is ergonomically designed and practical.

BRIEF DESCRIPTION

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed in the embodiments. Obviously, the drawings in the following description are only in the present utility model. For some of the described embodiments, those of ordinary skill in the art can also obtain other drawings based on these drawings.

FIG. 1 is a schematic diagram of the structure of an EEG acquisition cap provided by an embodiment of the utility model;

2 is a schematic diagram 1 of the structure of the brain electrode provided by the embodiment of the present invention;

FIG. 3 is a second schematic diagram of the structure of the brain electrode provided by the embodiment of the present invention.

Description of reference signs:

1. Whole ring headband; 2. Half ring headband; 3. Liquid storage device; 4. Grip; 5. Conductive contact; 6. First slider; 7. First positioning knob; 8. Connecting part; 9. Cantilever; 10. The second slider; 11. The second positioning knob.

detailed description

In order to enable those skilled in the art to better understand the technical solutions of the present utility model, the present utility model will be further described in detail below in conjunction with embodiments.

Referring to Figures 1 to 3, an EEG collecting cap of the present invention includes a frame and a plurality of brain electrodes moving on the frame;

The frame includes a cross-sectional full-circle headband 1 and a coronal half-circle headband 2;

The full-circular headband 1 and the semi-circular headband 2 are respectively scaled by a stepless shrinking device;

The two ends of the semi-annular headband 2 are respectively fixed on the entire annular headband 1;

The tail of the brain electrode is provided with a liquid storage device 3, the head of the brain electrode has a plurality of grippers 4, and each gripper 4 has a conductive contact 5 where the gripper 4 contacts the scalp. The conductive contact 5 is connected to the liquid storage device. 3 Connected internally.

Specifically, the EEG acquisition cap provided by the present invention realizes the adjustment of the headband size in the cross section and the coronal plane through multiple stepless shrinking devices, and can adapt to various head sizes. At the same time, it adopts semi-wet electrode design and adopts storage The liquid device can easily pass through the hair and make good contact with the scalp. Because the conductive liquid at the end of the electrode can wet the electrode head all the way, the electrode head can moisturize the scalp for a long time, reduce the resistance of the scalp, and improve the bioelectric signal Its stability and accuracy are in line with ergonomic design. Since the conductive paste is no longer used, one person can complete the wearing while wearing, and save a lot of wearing time. After use, there is no need to wash your hair.

In addition, the frame of the headband can be made of flexible and tough materials such as hard plastic, stainless steel, etc., which can padded the inside of the EEG cap and can be used when lying down, or it will not damage the EEG cap when wearing other equipment. The body adopts a frame structure, which minimizes the contact area of the head, improves air permeability and comfort, and prevents the main structure of the electrode cap from being damaged by external forces.

As a preferred embodiment, the stepless shrinking device includes a hollow first sliding block 6 and a first positioning knob 7. The whole ring headband 1 and the half ring headband 2 are cut into two sections at the stepless shrinking device, and they overlap each other. The ground slides in the first sliding block 6 and is fixed by the first positioning knob 7. The structure is simple and convenient to operate, can be adapted to various head sizes, and has good flexibility.

As a preferred embodiment, there is a connecting portion 8 between the tail and the head of the brain electrode, and the connecting portion 8 is threadedly connected with the tail liquid storage device 3 and the head with the gripper 4, and the connecting portion 8 is connected by a cantilever. 9 is movably connected to the headband, one end of the cantilever 9 is fixedly connected to the connecting portion 8 by screws, and the other end of the cantilever 9 has a second slider 10, which slides on the headband and passes through the second positioning knob 11 fixed.

As a preferred embodiment, one end of the liquid storage device 3 has a water outlet, the outer wall of the water outlet has an external thread, and one end of the connecting part 8 has an internal thread that matches the external thread, which can be quickly disassembled and refilled in the liquid storage device in time. Liquid.

As a preferred embodiment, the number of the brain electrodes is set to be multiple, which are distributed on the front side and the back side of the brain electricity collecting cap. The number of brain electrodes on the EEG cap can be installed as required, saving costs, and can be changed at any time according to actual point requirements, which is very convenient.

As a preferred embodiment, the conductive contact 5 has multiple holes or single holes.

As a preferred embodiment, there are three grippers 4.

As a preferred embodiment, the conductive contact 5 is made of metal or a non-metal conductive material, or a conductive material mixed of metal and non-metal, or a mixed metal or non-metal conductive fabric material.

In summary, the utility model completely solves the problems of long wearing time of the original technology, which cannot be worn by a single person, the size is not suitable and cannot be adjusted, and the cleaning is complicated after use, so that the EEG technology can be developed into the foundation of mass consumer products.

The above has only described some exemplary embodiments of the present utility model by way of illustration. Needless to say, for those of ordinary skill in the art, various different embodiments can be used without departing from the spirit and scope of the present utility model. Ways to modify the described embodiment. Therefore, the above description is illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

An EEG acquisition cap, characterized in that it comprises a frame and a plurality of brain electrodes moving on the frame;

The frame includes a full-circular headband with a cross section and a semi-circular headband with a crown;

The full-circular headband and the semi-circular headband are respectively scaled and zoomed through a stepless shrinking device;

The two ends of the semi-annular headband are respectively fixed on the entire annular headband;

The tail of the brain electrode is provided with a liquid storage device, and the head of the brain electrode is provided with a plurality of grippers, and each gripper has a conductive contact point where the gripper contacts the scalp, and the conductive contact is communicated with the liquid storage device.
The brain electricity collection cap according to claim 1, wherein the stepless contraction device comprises a hollow first sliding block and a first positioning knob, and the headband slides in the first sliding block and is restricted by the first positioning knob. Bit fixed.
The brain electricity collection cap according to claim 1, wherein there is a connecting part between the tail and the head of the brain electrode, and the connecting part is threadedly connected with the liquid storage device at the tail and the head with a gripper. , The connecting part is movably connected to the headband through a cantilever, one end of the cantilever is fixedly connected to the connecting part by a screw, and the other end of the cantilever has a second sliding block which slides on the headband and is fixed by a second positioning knob .
The brain electricity collection cap according to claim 3, wherein one end of the liquid storage device has a water outlet, the outer wall of the water outlet has an external thread, and one end of the connecting part has an internal thread matching the external thread.
The brain electricity collection cap according to claim 1, wherein the number of the brain electrodes is set to be multiple, which are distributed on the front and back sides of the brain electricity collection cap.
The brain electricity collection cap according to claim 1, wherein the conductive contact has a porous or a single hole.
The brain electricity collection cap according to claim 1, wherein the number of grips is three.
The brain electricity collection cap according to claim 1, wherein the conductive contact is made of metal or non-metal conductive material, or a conductive material mixed with metal and non-metal, or a mixed metal or non-metal conductive material. Fabric material.