CN111281380A - Hair-entering type electroencephalogram cap - Google Patents
Hair-entering type electroencephalogram cap Download PDFInfo
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- CN111281380A CN111281380A CN202010175103.7A CN202010175103A CN111281380A CN 111281380 A CN111281380 A CN 111281380A CN 202010175103 A CN202010175103 A CN 202010175103A CN 111281380 A CN111281380 A CN 111281380A
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- electroencephalogram
- hair
- dry electrode
- cap
- electrode
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/316—Modalities, i.e. specific diagnostic methods
- A61B5/369—Electroencephalography [EEG]
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/25—Bioelectric electrodes therefor
- A61B5/279—Bioelectric electrodes therefor specially adapted for particular uses
- A61B5/291—Bioelectric electrodes therefor specially adapted for particular uses for electroencephalography [EEG]
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
- A61B5/6802—Sensor mounted on worn items
- A61B5/6803—Head-worn items, e.g. helmets, masks, headphones or goggles
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
- A61B5/7225—Details of analog processing, e.g. isolation amplifier, gain or sensitivity adjustment, filtering, baseline or drift compensation
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- Computer Vision & Pattern Recognition (AREA)
- Physiology (AREA)
- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
Abstract
The invention discloses a hair-entering electroencephalogram cap, which comprises: the electroencephalogram dry electrode support comprises a base, a plurality of electroencephalogram dry electrodes and a plurality of slender support rods, wherein one end of each support rod is connected to the base, the other end of each support rod is connected with the electroencephalogram dry electrode, and the support rods are all in a bent shape and tend to gather towards the center at the other ends of the support rods. The wearing process of the electroencephalogram cap is simple and convenient, and basically no adjustment is needed; due to the high elasticity of the filaments, the cap is suitable for a wide range of head circumference; because of the small diameter of the filament, the filament can be easily covered or covered by hair, and is beautiful and natural; the weight is light, and the wearing is comfortable.
Description
Technical Field
The invention belongs to brain-computer interaction auxiliary equipment, and particularly relates to an in-shooting type electroencephalogram cap.
Background
The brain electricity cap is a device which is assembled with brain electricity collecting electrodes and is stably placed on the head. The common electroencephalogram cap is an elastic fabric electroencephalogram cap used in cooperation with an Ag/AgCl wet electrode. Such wet electrodes are typically barrel or bowl shaped and do not need to be passed through the hair to directly contact the scalp and require a conductive paste to wet the hair and make an electrical connection to the scalp. When the electroencephalogram cap is used, sufficient conductive paste is required to be injected into the reserved holes of the electrodes one by one to eliminate the obstruction of hairs to form a lower electrode/tissue impedance interface, although the wet electrode electroencephalogram cap is still widely used, the following defects exist during use:
the wearing and gluing of the wet electrode brain electricity cap are difficult to operate only by a user, professional assistance is needed, the operation process is time-consuming and labor-consuming, the injection process of the conductive paste is long, the residues bring inconvenience to the user and the maintenance of the electrode, and the daily application is not facilitated; secondly, the conductive paste dries out over time, which increases the interface impedance and is not suitable for long-term electroencephalogram monitoring.
The dry electrode is a novel sensing technology developed aiming at the defect of the wet electrode, can directly contact with scalp without matching with conductive paste, is worn and used immediately, does not need to be cleaned after use, and is a key technology for the practical application of wearable electroencephalogram technologies such as brain state monitoring and brain-computer interface technologies.
Compared with a wet electrode, the dry electrode does not have the assistance of a conductive paste, and the electrode body needs to be in direct contact with the scalp. The contact impedance depends on the conductive material of the electrode on one hand and the fixing device of the electrode on the other hand, and the stable and reliable fixing structure not only can enable the electrode to smoothly penetrate through hair to contact the scalp, but also can provide stable pressure for the electrode to form a good contact interface. The existing dry electrode electroencephalogram cap fixing structure is relatively heavy and complex, has large inertia in a motion state, and is easy to generate sliding displacement with the scalp when the head moves, so that the signal quality is reduced.
Aiming at the problems, the development of a dry electrode and brain cap system which is convenient and comfortable to wear quickly is a technology which needs to be solved urgently in daily application of brain-computer interface technology.
Disclosure of Invention
According to the electroencephalogram cap, the elastic inner polymerization structure is provided, so that the electroencephalogram cap has a simpler structure, has better adaptability to different head types, is simple and convenient to wear, and basically does not need to be adjusted; due to the high elasticity of the filaments, the cap is suitable for a wide range of head circumference; because of the small diameter of the filament, the filament can be easily covered or covered by hair, and is beautiful and natural; the weight is light, and the wearing is comfortable.
The invention discloses a hair-entering electroencephalogram cap, which comprises:
a base seat, a plurality of fixing holes and a plurality of fixing holes,
a plurality of brain electric dry electrodes are arranged on the brain,
one end of each support rod is connected to the base, the other end of each support rod is connected with the electroencephalogram dry electrode, and the support rods are all in a bent shape and tend to gather towards the center at the other ends of the support rods.
The invention discloses an improvement of an embedded electroencephalogram cap.
The invention discloses an improvement of a hair-entering electroencephalogram cap.
The invention discloses an improvement of a hair-entering electroencephalogram cap.
The invention discloses an improvement of an in-hair type electroencephalogram cap, which further comprises an amplifying circuit, wherein the amplifying circuit is electrically connected with an electroencephalogram dry electrode and amplifies a detection signal obtained by the electroencephalogram dry electrode.
The invention discloses an improvement of an incoming type electroencephalogram cap.
The invention discloses an improvement of an in-sending type electroencephalogram cap.
The invention discloses an improvement of an in-hair electroencephalogram cap, wherein an electroencephalogram dry electrode is an Ag/AgCL sintered dry electrode or a pure silver dry electrode or a composite dry electrode, the composite dry electrode is an electrode which takes a high polymer material as a base material and is formed with an Ag/AgCL layer or an Ag layer on at least part of the surface.
The invention discloses an improvement of an entry type brain electric cap, wherein a brain electric dry electrode is circular or square or elliptical.
The invention discloses a structural scheme of an invasive dry electrode electroencephalogram cap, which mainly comprises the following steps:
a set of filament spring rods that can be threaded through hair; a small-size (in-hair type) electroencephalogram dry electrode arranged on the elastic rod; and an amplifying circuit connected to the electrode.
The brain electric dry electrode is used for collecting brain electric signals;
the thin elastic support rod can be completely or partially hidden under the hair and used for fixing the brain electric dry electrode, the cross section of the thin elastic support rod can be in any suitable shape such as a circle, a square, an ellipse and the like, and the material can be metal or high polymer material;
the base is used for fixing the support rod and can be made of metal or high polymer materials;
as a modification, the dry electrode may be in any suitable shape such as spherical, cylindrical, conical, etc.;
as an improvement, the dry electrode material can be formed by sintering Ag/AgCL, or a high polymer material can be used as a base material, and the surface layer is covered with Ag/AgCL, or a pure silver material can be directly used;
as an improvement, the elastic support rod is a bent thin rod made of metal or high polymer materials, and the cross section of the elastic support rod can be in various suitable shapes such as a circle, a square, an ellipse and the like.
As an improvement, the elastic support rod can fix the electroencephalogram dry electrode in a bonding, injection molding, welding and other fixing modes;
as an improvement, the base is made of non-conductive material and is used for fixing the elastic supporting rod and the signal amplifier, and the fixed supporting rod is in a claw shape and can penetrate through the hair of a testee and be fixed on the head.
The electroencephalogram dry electrode is small in size, convenient to penetrate through hair when used, and can be in any appropriate shape such as spherical, cylindrical and conical shapes according to actual use requirements; the electroencephalogram dry electrode can be made of Ag/AgCL through sintering, can also be made of a high polymer material serving as a base material, and can also be made of a pure silver material or any other material suitable for serving as an electrode directly, wherein the surface layer of the base material is covered with the Ag/AgCL.
The elastic support rod is a thin rod with a certain shape, the number of the thin rods can be any appropriate number, the electroencephalogram dry electrode is fixed at the tail end of the elastic support rod in a bonding mode, an injection molding mode, a welding mode and the like, and the support rod drives the dry electrode to slide on the scalp to a measuring position required by the dry electrode; the cross section of the elastic support rod can be in various suitable shapes such as a circle, a square, an ellipse and the like; the length of the elastic support bar can be any length suitable for use; the elastic support rod is formed into a required shape by metal or high polymer materials.
The base is used for fixing a plurality of elastic supporting rods so as to form inward grabbing force of the supporting rods; the base is used for fixing the signal amplifier, and the base is made of non-conductive material.
The signal amplifier (can be an amplifier element formed on a PCB board, or can be another amplifier component with independent packaging), is connected with the brain electric dry electrode, transmits the signal collected by the brain electric dry electrode to the amplifier, and transmits the signal to a computer or other equipment after being processed by the amplifier, and the connection between the signal amplifier and the brain electric dry electrode can be realized through an elastic supporting rod or a lead.
The invention provides a device for collecting human brain electrical signals, which comprises electrodes, a support rod, a base, an amplifier, a lead and the like. The electrode can gather brain electrical signal, and the electrode is fixed on the bracing piece, and the bracing piece is thinner crooked elasticity pole, and several bracing pieces are fixed on the base, form certain whole gripping ability, and the bracing piece takes the electrode to pass the hair like comb hair, contacts the scalp during use to slide to suitable position, lean on whole gripping ability to fix the electrode on the head. The electroencephalogram signals collected by the electrodes are transmitted to the amplifier through the lead, and the amplifier transmits the electroencephalogram signals to the computer for analysis and application through the technologies of Bluetooth, wireless or wired transmission and the like. The equipment is suitable for various fields needing to acquire the electroencephalogram signals, such as medical treatment, education, entertainment and the like.
The electrode cap of the invention consists of a plurality of high-elasticity thin rods, and the tail end of each thin rod is provided with a dry electrode contact. The thin rod and the electrode contact have small transverse size (cross section radius or side length), and can easily penetrate through hair to contact with the scalp like comb teeth.
The invention overcomes the following problems existing in the prior art, and the dry electrode has the advantages of convenience and quickness in use of the brain electric cap, but the performance of the dry electrode in the aspect of signal acquisition is far inferior to that of the wet electrode due to various reasons such as the problem of hair interference. The electroencephalogram dry electrode and the elastic support rod are thin, the hair can be easily poked in a sliding mode, the dry electrode can reach the position to be measured and well contact with the scalp, the interference of the hair is reduced, and the performance of acquiring signals by the electroencephalogram dry electrode is improved; the slide-in wearing mode is simple to operate, the brain electric dry electrode and the support can be hidden in the hair, the brain electric dry electrode and the support are convenient and attractive, and the brain electric dry electrode support are suitable for various fields needing brain-computer interfaces.
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 schematic structural diagram of one embodiment of an invasive dry electrode brain cap of the present invention.
Detailed Description
The present invention will be described in detail below with reference to embodiments shown in the drawings. The embodiments are not intended to limit the present invention, and structural, methodological, or functional changes made by those skilled in the art according to the embodiments are included in the scope of the present invention.
The invention discloses a hair-entering electroencephalogram cap, which comprises: the device comprises a base 3, a plurality of brain dry electrodes 1 and a plurality of slender support rods 2, wherein one ends of the support rods 2 are connected to the base 3, the support rods 2 can be movably connected with the base 3 in a plugging mode by adopting jacks or slots and the like, and the support rods 2 can be in threaded connection by adopting screws or screw rods to match through hole screw holes and the like of the base 3 and the support rods 2 at the connecting positions; it is of course also possible to use an integral connection, for example, by welding, integrally forming the support bar 2, and the base 3 and the support bar 2 are integrally connected. The other end of the support rod 2 is connected with the brain electric dry electrode 1, the connection can also adopt the form of the jack slot, the threaded connection or the welding, and the like, and only the relevant structure needs to be adjusted adaptively. The plurality of support rods 2 are all in a bent shape, the other ends of the support rods 2 tend to gather towards the center, the polymerization tendency is caused by the bending of the support rods 2 in whole or part as shown in fig. 1, the electrodes can be attached to the collection part to realize effective collection through the polymerization, the space formed among the plurality of electrodes can be properly adjusted through the endowed proper bending elasticity, and the corresponding electrodes tend to gather towards the center, so that the purpose of attachment is realized.
It should be noted that the elastic capability here may be an elastic structure at least a part of the base 3 has an elastic recovery capability perpendicular to the extending direction thereof, that is, at least a part of the base 3 has a certain elasticity in the normal direction of the extending surface as shown in fig. 1 or in other directions non-parallel to the extending surface thereof (this is because the base 3 is not deformed in the extending direction thereof substantially in use, so the elastic force in this direction does not have a great significance), so that when the electrodes at the end portions of the supporting rod 2 are spread, the elasticity provided by the base 3 enables the supporting rod 2 to drive the electrodes to have a tendency of recovering and gathering toward the center, and the electrodes at the end portions cause the fitting detection position.
The elastic capability here may be an elastic structure in which at least a portion of the supporting rod 2 has an elastic recovery capability in a direction not parallel to the extending direction (when the direction is determined by a point on the supporting rod 2, the direction not parallel to the tangent of the point is an elastic direction of the elastic recovery capability), and the elastic structure enables the supporting rod 2 to have a free form shown in fig. 1 when being subjected to an external force, and when the supporting rod is expanded outward from the center, the supporting rod may have a tendency to gather toward the center due to the elastic force, so that the electrode at the end of the supporting rod 2 is attached to the detection position. The elastic structure here includes a structure of mass such as a rubber rod or a spring or an elastic metal rod.
In the previous solution, the section of the support bar 2 perpendicular to its extension is circular or square or oval.
Certainly, for the convenience of detection, in the scheme that includes but not the foregoing, this kind of sending-in brain electricity cap still includes amplifier circuit 4 (the amplifier circuit can also be provided with the data interface for external device data acquisition to realize the transmission that detects brain electricity data), and amplifier circuit 4 is connected with brain electricity dry electrode 1 and amplifies the detection signal that it obtained, in order to obtain more accurate detection signal. At this time, the amplifying circuit 4 (an integrated circuit board may also be an amplifier as shown in fig. 1) may be directly disposed on the base 3, and the electrode and the amplifying circuit 4 directly implement the connection of the detection signal, which may be implemented by wireless connection of wireless signals such as infrared, bluetooth, WiFi, and the like, or by wired connection of optical fibers, data cables, and the like. For example, when the wired connection is adopted, the amplification circuit 4 disposed on the base 3 and the brain dry electrode 1 disposed on the other end of the support rod may be electrically connected by a connection line disposed along the support rod 2.
In addition, the brain dry electrode 1 herein may be a common electrode in the art, such as an Ag/AgCL sintered dry electrode or a pure silver dry electrode or a composite dry electrode, where the composite dry electrode is an electrode that uses a polymer material (e.g., PP, PE, rubber, etc.) as a base material and forms an Ag/AgCL layer or an Ag layer on at least a portion of the surface thereof.
In addition, the brain dry electrode 1 is circular or square or elliptical.
The embodiment provides a hair-entering dry electrode electroencephalogram cap which comprises an electroencephalogram dry electrode 1, a support rod 2, a base 3 and a signal amplifier 4, wherein in the embodiment, the electroencephalogram dry electrode 1 is a sphere which is formed by Ag/AgCL sintering and has the diameter of 1-2 mm, the elastic support rod 2 is an elastic rod which is formed by stainless steel and has the diameter of 1-2 mm, and the electroencephalogram dry electrode is fixed on the elastic rod; the base 3 is processed and molded by high polymer materials, is non-conductive, and a plurality of elastic supporting rods can be fixed on the base to form inward gripping force and can be directly fixed on the head of a testee; the signal amplifier 4 is used for receiving, processing and transmitting brain electrical signals transmitted from the brain dry electrode.
When the electroencephalogram dry electrode is used, the electroencephalogram cap is placed at the top of the head of a subject, the electroencephalogram dry electrode 1 is slightly pressed downwards with force, the electroencephalogram dry electrode 1 is driven by the elastic supporting rod 2 to slide into the hair and slide to a required position on the scalp, the head is fixed to the head of the subject by the aid of the gripping force of the elastic supporting rod, signals collected by the electroencephalogram dry electrode 1 are transmitted to the base 3 through the stainless steel elastic supporting rod 2 and then transmitted to the signal amplifier 4 through a lead embedded into the base 3, and the signals are received by the signal amplifier and then transmitted to a computer or other equipment through the Bluetooth technology.
When in use, the elastic support rod has larger adaptability, the hair-entering dry electrode electroencephalogram cap can be simultaneously suitable for different head types, is convenient to wear and take, and is overall concise and attractive.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. 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 (9)
1. Formula of sending out brain electricity cap includes:
a base seat, a plurality of fixing holes and a plurality of fixing holes,
a plurality of brain electric dry electrodes are arranged on the brain,
the support rods are in a long and thin shape, one end of each support rod is connected to the base, the other end of each support rod is connected with the electroencephalogram dry electrode, and the support rods are all in a bent shape and tend to gather towards the center at the other ends of the support rods.
2. The hair-entry hat of claim 1, wherein at least a portion of said base has an elastic structure with elastic recovery capability perpendicular to its extension direction or at least a portion of said support rods has an elastic structure with elastic recovery capability not parallel to its extension direction.
3. The hair-entry electroencephalogram cap of claim 2, wherein the elastic structure comprises a rubber rod or a spring or a resilient metal rod.
4. The hair-entering electroencephalogram cap of any one of claims 1 to 3, wherein the cross section of the support bar perpendicular to the extension direction thereof is circular or square or elliptical.
5. The hair-entrance electroencephalogram cap of claim 1, further comprising an amplification circuit, wherein the amplification circuit is electrically connected with the electroencephalogram dry electrode and amplifies the detection signal obtained by the electroencephalogram dry electrode.
6. The hair-entry electroencephalogram cap of claim 5, wherein the amplification circuit is disposed on the base.
7. The hair-entering electroencephalogram cap of claim 6, wherein the amplifying circuit arranged on the base is electrically connected with the electroencephalogram dry electrode arranged at the other end of the support rod through a connecting wire arranged along the support rod.
8. The hair-entering electroencephalogram cap of claim 1, wherein the electroencephalogram dry electrode is an Ag/AgCL sintered dry electrode or a pure silver dry electrode or a composite dry electrode, the composite dry electrode is an electrode which takes a high polymer material as a base material and is formed with an Ag/AgCL layer or an Ag layer on at least part of the surface.
9. The hair-entry brain cap of claim 1 or 8, wherein the brain stem electrode is circular or square or elliptical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010175103.7A CN111281380A (en) | 2020-03-13 | 2020-03-13 | Hair-entering type electroencephalogram cap |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010175103.7A CN111281380A (en) | 2020-03-13 | 2020-03-13 | Hair-entering type electroencephalogram cap |
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| CN111281380A true CN111281380A (en) | 2020-06-16 |
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| CN202010175103.7A Pending CN111281380A (en) | 2020-03-13 | 2020-03-13 | Hair-entering type electroencephalogram cap |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111839531A (en) * | 2020-07-22 | 2020-10-30 | 武汉爱可泰思医疗科技有限公司 | Brain detection device |
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2020
- 2020-03-13 CN CN202010175103.7A patent/CN111281380A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111839531A (en) * | 2020-07-22 | 2020-10-30 | 武汉爱可泰思医疗科技有限公司 | Brain detection device |
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