CN220141666U - Dry electrode for non-invasive brain-computer interface device - Google Patents
Dry electrode for non-invasive brain-computer interface device Download PDFInfo
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- CN220141666U CN220141666U CN202321178542.9U CN202321178542U CN220141666U CN 220141666 U CN220141666 U CN 220141666U CN 202321178542 U CN202321178542 U CN 202321178542U CN 220141666 U CN220141666 U CN 220141666U
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- 239000013013 elastic material Substances 0.000 claims abstract description 5
- 229910021607 Silver chloride Inorganic materials 0.000 claims description 5
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract 1
- 210000003128 head Anatomy 0.000 description 15
- 210000004761 scalp Anatomy 0.000 description 11
- 210000004556 brain Anatomy 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 208000002193 Pain Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000003710 cerebral cortex Anatomy 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 210000002569 neuron Anatomy 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Landscapes
- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
Abstract
The utility model discloses a dry electrode for non-invasive brain-computer interface equipment, which comprises a conductive base and electrode heads, wherein one end surface of the conductive base is provided with a conductive connecting part, the conductive connecting part is used for being connected with the brain-computer interface equipment, and the other end surface of the conductive base is provided with at least one electrode head; the electrode head comprises an electrode body made of elastic materials and a first conductive layer covered on the surface of the electrode body. The dry electrode disclosed by the utility model has the advantages of low cost, simple structure, easiness in manufacturing, simplicity and accuracy in electroencephalogram signal acquisition, stronger suitability and convenience in replacement and maintenance.
Description
Technical Field
The utility model relates to the technical field of medical detection equipment, in particular to a dry electrode for non-invasive brain-computer interface equipment.
Background
Brain waves are the overall activities of brain nerve cells, including ion exchange, metabolism, etc. comprehensive external manifestations. The electroencephalogram signal contains a large amount of information, and can provide an effective treatment means for the medical field and be used in the ideological control field such as AR and the like for monitoring and analyzing the electroencephalogram signal.
There are two types of acquisition modes of brain electrical signals, namely invasive acquisition and non-invasive acquisition, wherein the invasive acquisition mode is to open the brain and implant a sensor inwards, and the mode is not suitable for daily use of users. The non-invasive electroencephalogram signal acquisition mode is to acquire the electroencephalogram signal by placing an electrode sensor outside the cerebral cortex, and the method is more applied to brain-computer interface products and is common in life.
In non-invasive electroencephalogram signal acquisition, a wet electrode or a dry electrode can be used, and when the electroencephalogram signal is measured by using the wet electrode, the acquired signal has high precision, but a professional operator is required to smear conductive paste on the head of a measured person for measurement so as to amplify the electroencephalogram signal. The use of wet electrodes has the following disadvantages: 1. the measurement operation is troublesome, the testee needs professional staff to smear paste, and the testee needs to wash hair after the test is finished, so that the steps are tedious and the time is long; 2. the stability of the conductive paste is deteriorated with the increase of time, so the test time cannot be excessively long; 3. the wet electrode needs to be directly connected to a computer by using a wire, so that the environment range of the wet electrode is smaller. Therefore, the mode of acquiring the brain electrical signals by adopting the wet electrode is mostly used in professional medical treatment. Compared with the measurement of the electroencephalogram signals by using the wet electrode, the dry electrode uses the high input impedance technology, the dependence on dielectrics is small, and the dry electrode uses the wireless communication technology to collect the electroencephalogram signals, so that the restriction of the environment on the electroencephalogram signals is reduced, and therefore, the dry electrode can be suitable for a wider scene, particularly, along with the development of the age, the electroencephalogram products are not only applied to the medical field, but also expand to the consumer electronics field.
In view of the above, the patent application number 2022222164935 discloses a reusable thimble-type gold-plated brain-electrical dry electrode, which comprises a plastic shell with hollowed centers, a silver-plated copper piece and a plurality of gold-plated elastic needles, wherein the bottom of each gold-plated elastic needle is embedded into the plastic shell, conductive foam is laid at the top of each gold-plated elastic needle, the bottom of each silver-plated copper piece is in extrusion contact with the conductive foam, a threaded hole for being electrically connected with external collecting equipment is formed in the center of each silver-plated copper piece, the thimble-type gold-plated brain-electrical dry electrode is relatively complex in structure, meanwhile, the gold-plated elastic needles are abutted against a scalp and elastically deformed due to the fluctuation of the scalp, but the strength of the gold-plated elastic needles is relatively high, and when the gold-plated elastic needles are contacted with the scalp, the scalp contact position has stronger tingling feeling.
Disclosure of Invention
In view of the above, the present utility model proposes a dry electrode for a non-invasive brain-computer interface device to optimize the structure while improving the comfort of use.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a dry electrode for a non-invasive brain-computer interface device, comprising a conductive base and an electrode tip;
one end face of the conductive base is provided with a conductive connecting part which is used for being connected with brain-computer interface equipment, and the other end face of the conductive base is provided with at least one electrode head;
the electrode head comprises an electrode body made of elastic materials and a first conductive layer covered on the surface of the electrode body.
In order to better realize the technical scheme, optionally, the first conductive layer is a silver chloride layer.
Optionally, the electrode body is made of medical rubber.
Optionally, the conductive base comprises a base body made of medical rubber and a second conductive layer covered on the surface of the base body.
Optionally, the conductive connection part is a threaded column structure or a plug-in column structure.
Optionally, the number of the electrode heads is three, and the electrode heads are distributed on the conductive base in a regular triangle.
Optionally, the shape of electrode tip is T shape, the vertical section of electrode tip is connected with electrically conductive base, the transversal section of electrode tip is used for contradicting at human head.
Optionally, the transverse section of the electrode head is of a circular arch structure.
The utility model has the beneficial effects that:
compared with the prior art, the dry electrode for the non-invasive brain-computer interface device greatly improves the self-adaptive capacity of an electrode assembly of the brain-computer device, the electrode head and the electrode base are integrally connected, the electrode head is always tightly attached to the scalp at a designated acupoint in the process of detecting the brain-computer signal through the elasticity of the material of the dry electrode, the self-adaptive capacity is high, the electrode slipping phenomenon caused by the head shape can be avoided, and the detected brain-computer signal is more accurate.
Drawings
FIG. 1 is a schematic perspective view of an angle of a dry electrode for a non-invasive brain-computer interface device according to an embodiment of the present utility model;
FIG. 2 is another angular perspective view of a dry electrode for a non-invasive brain-computer interface device according to an embodiment of the present utility model;
FIG. 3 is a front view of FIG. 1;
FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;
the conductive base 10, the base body 101, the second conductive layer 102, the conductive connection portion 103, the electrode tip 20, the electrode tip body 201, and the first silver chloride layer 202.
Detailed Description
The technical scheme of the utility model is described in detail below with reference to the accompanying drawings and the specific embodiments. Wherein like parts are designated by like reference numerals.
Referring to fig. 1 to 4, the present embodiment discloses a dry electrode for a non-invasive brain-computer interface device, which includes a conductive base 10 and an electrode tip 20.
Wherein, an end surface of the conductive base 10 is provided with a conductive connection portion 103, the conductive connection portion 103 is used for being connected with brain-computer interface equipment, the other end surface of the conductive base 10 is provided with at least one electrode tip 20, and the electrode tip 20 comprises an electrode tip body 201 made of elastic material and a first conductive layer 202 covering the surface of the electrode tip body 201 made of elastic material.
According to the dry electrode provided by the embodiment of the utility model, the electrode tip 20 is abutted against the scalp, and due to the elastic characteristic of the electrode tip 20, on one hand, the elasticity of the electrode tip 20 can be utilized to ensure that the electrode tip 20 is always tightly attached to the scalp at a designated acupoint in the process of detecting the brain electrical signal, so that the detected brain electrical signal is more accurate, and on the other hand, the stinging feeling of the scalp can be reduced.
In the embodiment of the utility model, the conductive base 10 includes a base body 101 made of medical rubber and a second conductive layer 102 covering the surface of the base body 101, the electrode tip body 201 is made of medical rubber, and the base body 101 and the electrode body 201 are integrally formed, so that the production cost is reduced, and the yield of products is improved.
In the embodiment of the present utility model, the electrode tips 20 are three and are distributed on the conductive base 10 in a regular triangle, and in other alternative embodiments, the electrode tips 20 may be four, five or more, and the shape of a single electrode tip 20 is T-shaped;
the vertical section of the electrode tip 20 is connected with the conductive base 10, the horizontal section of the electrode tip 20 is used for abutting against the scalp, the horizontal section of the electrode tip 20 is of a circular arch structure, the electrode tip 20 distributed in a right triangle shape can automatically adjust the position of the electrode tip 20, the electrode tip 20 is always tightly attached to the scalp in the measuring process of a dry electrode, electrode slipping caused by the size of the head can be avoided, the self-adaption capability is strong, the contact area between the horizontal section of the electrode tip 20 of the circular arch structure and the skin is sufficient, further, the pressing sense and the skin pricking sense brought to people in the long-time electroencephalogram signal collecting process are reduced, and the comfort is higher.
In the embodiment of the present utility model, the first conductive layer 202 and the second conductive layer 102 are both silver chloride layers, and the silver chloride layers are used as conductive layers, so that the potential is stable, the conductivity is good, and the signal is stable.
In the embodiment of the utility model, the conductive connecting part 103 is in a threaded column structure or a plug-in column structure, preferably, the conductive connecting part 103 is in a plug-in column structure, and the dry electrode is plugged in a hole preset in the brain-computer interface by using the conductive connecting part 103 in the plug-in column structure, so that the connection mode is simple and convenient, and the structure is stable.
Compared with the prior art, the dry electrode for the non-invasive brain-computer interface device greatly improves the self-adaptive capacity of an electrode assembly of the brain-computer device, the electrode head 20 is connected with the electrode base 10 in an integrated manner, the electrode head is always tightly attached to a specified acupoint and scalp in the process of detecting the brain-computer signal through the elasticity of the material of the electrode head, the self-adaptive capacity is high, the electrode slipping phenomenon caused by the size of the head can be avoided, and the detected brain-computer signal is more accurate.
The technical scheme of the utility model is described in detail in the above with reference to the specific embodiments, and the specific embodiments are used for helping to understand the idea of the utility model. Those skilled in the art will appreciate that many modifications and variations are possible in light of the above teaching.
Claims (5)
1. A dry electrode for a non-invasive brain-computer interface device, comprising a conductive base (10) and an electrode tip (20);
a conductive connecting part (103) is arranged on one end face of the conductive base (10), the conductive connecting part (103) is used for being connected with brain-computer interface equipment, and at least one electrode head (20) is arranged on the other end face of the conductive base (10);
the electrode head (20) comprises an electrode body (201) made of elastic materials and a first conductive layer (202) covered on the surface of the electrode body (201);
the three electrode heads (20) are distributed on the conductive base (10) in a regular triangle, the electrode heads (20) are T-shaped, vertical sections of the electrode heads (20) are connected with the conductive base (10), and transverse sections of the electrode heads (20) are of a circular arch structure and are used for abutting against the head of a human body.
2. A dry electrode for a non-invasive brain-computer interface device according to claim 1, characterized in that the first conductive layer (202) is a silver chloride layer.
3. A dry electrode for a non-invasive brain-computer interface device according to claim 1, characterized in that the electrode body (201) is made of medical rubber.
4. A dry electrode for a non-invasive brain-computer interface device according to claim 1, characterized in that the conductive base (10) comprises a base body (101) of medical rubber material and a second conductive layer (102) covering the surface of the base body (101).
5. A dry electrode for a non-invasive brain-computer interface device according to claim 4, characterized in that the conductive connection (103) is a threaded or plug-in post structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321178542.9U CN220141666U (en) | 2023-05-16 | 2023-05-16 | Dry electrode for non-invasive brain-computer interface device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321178542.9U CN220141666U (en) | 2023-05-16 | 2023-05-16 | Dry electrode for non-invasive brain-computer interface device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220141666U true CN220141666U (en) | 2023-12-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321178542.9U Active CN220141666U (en) | 2023-05-16 | 2023-05-16 | Dry electrode for non-invasive brain-computer interface device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220141666U (en) |
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2023
- 2023-05-16 CN CN202321178542.9U patent/CN220141666U/en active Active
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