CN112656418B - A flexible dry brain electrode and method of using the same - Google Patents
A flexible dry brain electrode and method of using the same Download PDFInfo
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Abstract
本发明公开了一种柔性干式脑电极及其使用方法，该柔性干式脑电极包括底座；若干阵列且垂直设于底座上的内圈探针；若干位于内圈探针外侧且朝外倾斜设于底座上具有柔性的外圈探针，外圈探针呈圆环分布，外圈探针的触角端高于内圈探针的触角端。本申请实施例的柔性干式脑电极，拨动底座即可利用内圈探针拨开头发，进而确保内圈探针能与头部皮肤紧密接触，直达头皮层，降低电极与皮肤的接触阻抗；且无需外部辅助的限位装置，仅需通过外圈探针群所形成高于内圈探针的环形平面在压力作用下可以插入发梢之间起到固定的作用，有效减少了电极佩戴时由运动位移带来的运动伪影，并能配合内圈探针获得高信噪比的脑电信号。
The invention discloses a flexible dry brain electrode and a method of using the same. The flexible dry brain electrode comprises a base; a plurality of inner ring probes arranged vertically on the base; a plurality of inner ring probes located outside the inner ring probe and inclined outward A flexible outer ring probe is arranged on the base, the outer ring probe is distributed in a circular ring, and the antennae end of the outer ring probe is higher than the antennae end of the inner ring probe. In the flexible dry brain electrode of the embodiment of the present application, the inner probe can be used to poke the hair by pulling the base, thereby ensuring that the inner probe can be in close contact with the skin of the head, directly reaching the scalp layer, and reducing the contact impedance between the electrode and the skin ; And no external auxiliary limiting device is needed, only the annular plane formed by the outer ring probe group higher than the inner ring probe can be inserted between the hair tips under the action of pressure to play a fixed role, effectively reducing the wearing of electrodes. The motion artifact caused by the movement displacement can be obtained, and the EEG signal with high signal-to-noise ratio can be obtained with the inner ring probe.
Description
Technical Field
The invention relates to the technical field of human body monitoring, in particular to a flexible dry-type brain electrode and a using method thereof.
Background
An electroencephalogram (EEG) is a biological signal closely related to human health, cognitive learning, and life movement, and has an important role in the fields of human brain science, human-computer interaction, intelligent control, psychological disease detection, cerebral disease, rehabilitation training, and the like.
The brain electrode is one of the core components in the brain-computer interface and plays a role in collecting brain signals. In the top area of the head of a human body, because hairs exist, the electrodes and the skin can be isolated by the hairs, the electrodes and the skin cannot be in direct contact, the impedance is increased, and therefore high-quality electroencephalogram signals which are difficult to collect are difficult to obtain.
At present, the mainstream commercial brain electrodes are mainly divided into a wet electrode and a dry electrode, wherein the wet electrode is generally a Ag/AgCl-based wet brain electrode, the wet brain electrode is used, conductive gel is coated on the pretreated skin to reduce impedance, the preparation time is long in the early stage, and the conductive gel becomes dry along with the increase of the use time, so that the impedance is increased, the test result is influenced, and the long-term wearing is not facilitated; in the aspect of the dry electrode, the electrode can be worn immediately and conveniently and quickly because conductive adhesive is not needed.
However, in the prior art, the dry electrode is mainly divided into a microneedle matrix electrode and a finger electrode, and the microneedle matrix electrode is mostly based on the MEMS technology, so that the manufacturing process is complicated, the cost is high, and in order to reduce the impedance, the skin stratum corneum needs to be punctured when the electrode is used, and the microneedles are at risk of being broken, thereby causing infection; the finger-shaped electrode is of a millimeter-scale array structure, cannot penetrate into the stratum corneum, and can properly avoid hairs due to a mechanical structure and directly contact with the scalp to play a role in reducing the impedance; the most important point is that the structure is not provided with a fixing device, and even if a user carries the electroencephalogram cap, the electrode is easy to shift or loosen under the moving condition, so that the acquired electroencephalogram signals cause motion artifacts.
Accordingly, the prior art is yet to be improved and developed.
Disclosure of Invention
In view of the defects of the prior art, an object of the embodiments of the present application is to provide a flexible dry-type brain electrode and a method for using the same, which can conveniently and quickly fix the brain electrode, avoid the influence of motion artifacts, and effectively ensure that a probe can be in close contact with the skin of the head and reach the cortex of the head, reduce the contact impedance between the electrode and the skin, and thus obtain a stable and accurate brain signal.
In a first aspect, an embodiment of the present application provides a flexible dry-type brain electrode, including:
a base;
a plurality of inner ring probes which are arrayed and vertically arranged on the base;
a plurality of outer lane probes that are located the inner circle probe outside and incline outward and locate and have flexibility on the base, the outer lane probe is the ring and distributes, the feeler end of outer lane probe is higher than the feeler end of inner circle probe.
The flexible dry-type brain electrode is characterized in that the outer ring probes are distributed in an array of more than two circular rings.
The flexible dry-type brain electrode is characterized in that the outer ring probes on the adjacent circular rings are distributed in a staggered manner.
The flexible dry-type brain electrode is characterized in that the feeler end of the outer ring probe relatively positioned on the inner ring is higher than or flush with the feeler end of the outer ring probe relatively positioned on the outer ring.
The flexible dry-type brain electrode is characterized in that the outer ring probe relatively positioned on the outer ring is thicker than the outer ring probe relatively positioned on the inner ring.
The flexible dry-type brain electrode is characterized in that the inclination angle between the length direction of the outer ring probe and the vertical line of the base is 9-17 degrees, and the length of the outer ring probe is 1.05-1.2 times of that of the inner ring probe.
The flexible dry-type brain electrode is characterized in that the base, the inner ring probe and the outer ring probe are all made of flexible conductive polymers consisting of conductive filling particles and elastic polymers.
The flexible dry-type brain electrode is characterized in that the inner ring probe is thicker than the outer ring probe.
The flexible dry-type electroencephalogram electrode is characterized in that the inner ring probe is a cylindrical, prismatic, circular truncated cone-shaped or prismatic frustum-shaped finger-shaped probe, and the outer ring probe is a cylindrical, prismatic, circular truncated cone-shaped or prismatic frustum-shaped finger-shaped probe.
In a second aspect, embodiments of the present application provide a method for using the flexible dry brain electrode, including the steps of:
s1, placing the flexible dry-type brain electrode on the head, and enabling the inner ring probe to face one side of the head and the outer ring probe to be attached to the head;
s2, poking the flexible dry brain electrode, and poking hair by using the inner ring probe;
and S3, applying pressure to fix the flexible dry-type electroencephalogram electrode on the head, so that the outer ring probe is outwards spread and the inner ring probe is attached to the skin of the head.
Therefore, according to the flexible dry-type brain electrode, the hair can be pulled open by the inner ring probe by pulling the base, so that the inner ring probe can be ensured to be in close contact with the skin of the head and reach the cortex of the head, and the contact impedance of the electrode and the skin is reduced; and an external auxiliary limiting device is not needed, and only an annular plane which is formed by the outer ring probe group and is higher than the inner ring probe can be inserted between the hair tips under the action of pressure to play a fixing role, so that the motion artifact caused by motion displacement when the electrode is worn is effectively reduced, and the electrode can be matched with the inner ring probe to obtain an electroencephalogram signal with high signal-to-noise ratio.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
Fig. 1 is a perspective view of a flexible dry brain electrode according to an embodiment of the present application.
Fig. 2 is a top view of a flexible dry brain electrode according to an embodiment of the present application.
Fig. 3 is a front view of a flexible dry brain electrode according to an embodiment of the present application.
Fig. 4 is a flow chart of a method of using the flexible dry brain electrode in an embodiment of the present application.
Reference numerals: 1. a base; 2. an inner ring probe; 3. and (4) an outer ring probe.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to fig. 1 to 4 in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.
As shown in fig. 1 to 3, the present embodiment provides a flexible dry type brain electrode, including:
a base 1;
a plurality of inner ring probes 2 which are arrayed and vertically arranged on the base 1;
a plurality of outer lane probes 3 that have flexibility are located the inner circle probe 2 outside and locate base 1 to the slope outwards, and outer lane probes 3 are the ring and distribute, and the feeler end of outer lane probes 3 is higher than the feeler end of inner circle probe 2.
It is worth mentioning that the flexible dry brain electrode of the embodiment of the present application belongs to the finger-like brain electrode.
The flexible dry-type brain electrode of the embodiment of the application, set up outer lane probe 3 in inner lane probe 2 periphery, and the feeler end of outer lane probe 3 stretches out the height that is higher than the feeler end of inner lane probe 2, make the probe feeler end that distributes on the base 1 form concave ladder groove face, the feeler end of inner lane probe 2 is the plane of invagination for the feeler end of outer lane probe 3 promptly, because flexible dry-type brain electrode wholly is soft state, accessible application of force makes outer lane probe 3 deformation spread out between the tip of inserting the head, thereby be fixed in flexible dry-type brain electrode, and make inner lane probe 2 hug closely head skin, thereby make this brain electrode can adapt to the curved surface of head, laminating skin, avoid the user to wear the discomfort, and effectively prevent to arouse the motion artifact because of the motion production position offset when the pole uses.
The flexible dry-type brain electrode comprises outer ring probes 3 which are inclined and distributed in a circular ring mode, and outer ring probes 3 groups which are arranged in an annular axial symmetry mode are formed, an annular plane which is higher than an inner ring probe 2 and formed by the outer ring probes 3 groups can be inserted into a hair tip to play a fixing role under the action of pressure, dynamic balance can be kept under certain external force interference, motion artifacts caused by motion displacement when the electrode is worn are effectively reduced, and the flexible dry-type brain electrode can be matched with the inner ring probe 2 to obtain high signal-to-noise ratio brain signals.
In addition, the flexible dry-type electroencephalogram electrode is provided with the inner ring probes 2 which are perpendicular to the base 1, the inner ring probes 2 can be used for pulling hair open by rotating the base 1, the inner ring probes 2 can be further ensured to be in close contact with the skin of the head and reach the cortex of the head, the contact area is increased, and the contact impedance of the electrode and the skin is reduced.
The inner ring probes 2 in the embodiment of the application are all designed to be equal in height, so that the top surfaces of the antenna ends of the inner ring probes 2 are flush, and the inner ring probes 2 can be ensured to be in full contact with the skin of the head when the electrode is used by matching with the flexibility of the inner ring probes, so that stable electroencephalogram signals can be acquired; the inner ring probes 2 of the plurality of arrays can form a contact surface with uniform roughness, so that the maximum static friction force between the electrode and the skin of the head is improved, the stability of electrode installation is further improved, and in addition, hairs are positioned in gaps among the inner ring probes 2 after the inner ring probes 2 are pulled out, and the electrode can be further prevented from loosening and displacing.
It is worth mentioning that after the outer ring probe 3 is spread out, the antenna end of the outer ring probe clings to the skin of the head, and the antenna end of the inner ring probe 2 are used for acquiring the electroencephalogram signals.
In some preferred embodiments, the base 1 is circular, which is beneficial to shape the outer ring probe 3 distributed along the circular ring, and is beneficial to applying force to press the base 1 to spread the outer ring probe 3 outwards in all directions, so as to ensure that the outer ring probe 3 can effectively play a role in fixing the middle of the brain electrode.
In other embodiments, the base 1 may also be oval, rectangular, parallelogram, etc.
In some preferred embodiments, the base 1, the inner ring probe 2 and the outer ring probe 3 are designed as a whole, and the brain electrode formed by integral molding is beneficial to mass production, and meanwhile, the problem that the inner ring probe 2 or the outer ring probe 3 falls off from the base 1 can be effectively avoided, and the use quality of the product is ensured.
In some preferred embodiments, the base 1, the inner ring probe 2 and the outer ring probe 3 are all made of flexible conductive polymer, and the flexible conductive polymer is composed of conductive filling particles (carbon black, carbon fibers, carbon nanotubes, metal particles, surface coating particles) and elastic polymer (PDMS, rubber, etc.).
In order to obtain good conductivity and elastic modulus of the electrode, the mixing mass ratio of the conductive filling particles is controlled to be 35-50%, and the resistivity is about 10-3The magnitude order of omega cm, the conductivity is close to good conductors such as metal, etc., can ensure the collection of electroencephalogram signals; in addition, for softness and comfort, the Shore hardness of the electrode made of the flexible conductive polymer is 50-70A, which is equivalent to the hardness of a card, and the shore hardness is matched with the elastic modulus of a human body, so that the requirement of long-term wearing can be met.
Because the electrode is made of the good conductor material, the inner ring probe 2 and the outer ring probe 3 on the electrode are good conductors, and the top of the contact angle end of the inner ring probe 2 is designed to be planar, so that the contact area between the contact angle end and the skin of the head can be increased, and electroencephalogram signals can be accurately acquired; after the outer ring probe 3 is spread out, besides the tail end of the antenna end, the side wall of the outer ring probe can also collect electroencephalogram signals after contacting with the skin of the head, so that the direct contact area of the electrode and the skin of the head is further increased, and better and more stable electroencephalogram signals can be collected.
In addition, because the electrode is made of the material with the conductive property, a contact angle end on the probe in the electrode does not need to be additionally provided with a rigid metal contact angle, and the production difficulty and the assembly cost of the product can be reduced.
In some preferred embodiments, the number of the inner ring probes 2 is 35-45, which can be designed according to the actual use requirement and the size of the base 1.
In some preferred embodiments, the inner circle probes 2 are in an equidistant array, and the array spacing at the antenna end of the inner circle probes 2 is designed to be 1.2-1.5mm with reference to the number and radius of hairs (i.e. the length of a connecting line between the central points of the antenna ends of two adjacent inner circle probes 2 is 1.2-1.5 mm); the design of the distance is mainly to simulate the shape of a comb to avoid hair, ensure that the antenna end of the inner ring probe 2 can directly contact with the cortex of the head, increase the signal acquisition area of electroencephalogram signals and reduce contact impedance.
In certain preferred embodiments, the length of the inner ring probe 2 is 6-10mm, which is designed to ensure that the inner ring probe 2 of the electrode can pass over the hair layer to contact the skin of the head.
In some preferred embodiments, the outer ring probes 3 are distributed in more than two circular ring arrays; the outer ring probes 3 distributed in a multiple circular ring array are arranged, so that the installation stability of the electrode can be further improved.
In some preferred embodiments, the outer ring probes 3 on adjacent rings are distributed in a staggered manner; the outer ring probes 3 on the adjacent circular rings are staggered, so that the outer ring probes 3 on the two circular rings are located on different radial lines, the spreading-out paths of the outer ring probes 3 on the two circular rings are staggered when the outer ring probes 3 on the two circular rings are spread out, the outer ring probes 3 on the two circular rings can be inserted into different hair clusters to be in contact with the skin of the head when the outer ring probes 3 on the two circular rings are spread out, the outer ring probes 3 on the two circular rings and the hair form a weaving shape, and the installation stability of the electrode is further ensured.
In some preferred embodiments, the feeler end of the outer ring probe 3 opposite to the outer ring is higher or flush with the feeler end of the outer ring probe 3 opposite to the inner ring; that is, the outer ring probes 3 on the two adjacent rings are spread out, so that the outer ring probes 3 on the outer ring have larger or same spreading angle as the outer ring probes 3 on the inner ring, and the staggered and mistaken touch of the outer ring probes 3 on the two adjacent rings is effectively avoided.
In some preferred embodiments, the antenna end of the outer ring probe 3 is preferably flush; the outer ring probe 3 is highly parallel and level, so that the outer ring probes 3 on different rings have the same spreading angle, the hair and the outer ring probe 3 are favorable for alternately weaving and fixing the electrode position, the electrode is effectively prevented from loosening, and the long-term wearing and use are suitable.
In certain preferred embodiments, the outer ring of probes 3 located relatively on the outer ring is thicker than the outer ring of probes 3 located relatively on the inner ring; if the outer ring probe 3 is of a cylindrical structure, the radius of the outer ring probe 3 positioned on the outer ring is smaller than that of the outer ring probe 3 positioned on the inner ring in the outer ring probes 3 on the adjacent double rings, so that the outer ring probe 3 on the outer ring is thinner than the outer ring probe 3 on the inner ring, the hairs are favorably separated step by step when the outer ring probe 3 is spread, and after part of the hairs are spread by the outer ring probe 3 on the outer ring, the rest hairs are spread by the outer ring probe 3 on the inner ring; compared with the outer ring probe 3 on the outer ring, the outer ring probe 3 on the inner ring needs to be pulled open less hair, so the size of the probe can be increased, the contact area of the probe and the skin of the head is increased, and the impedance is reduced.
In some preferred embodiments, the outer ring probes 3 are preferably distributed in a double circular ring array; the outer lane probe 3 quantity on the dual ring array is unanimous, and for the dislocation design, the outer lane probe 3 of dislocation design can alternate between the hair to ensure that dual outer lane probe 3 exerts pressure and spreads out the back, dual outer lane probe 3 is spread out step by step and is inserted different hair groups respectively, improves the stability of electrode installation, is fit for wearing the use for a long time.
In some preferred embodiments, the inclination angle between the length direction of the outer ring probe 3 and the vertical line of the base 1 is θ =9-17 °; the design of this inclination is decided according to the length ratio of outer lane probe 3 and inner circle probe 2, so that outer lane probe 3 is after proper pressure is opened in the exhibition, its feeler end and inner circle probe 2's feeler end homoenergetic laminate and contact tip skin, it is natural smooth and easy to make the process of opening simultaneously, can not produce the tingling sense to head skin, can keep the comfort to head skin when this outer lane probe 3's inclination can ensure to electrode pressure testing messenger outer lane probe 3 opens promptly, and outer lane probe 3 can have proper pressure sense to head skin under keeping the laminating state after opening, realize the regulation and control to pressure and comfort level.
In some preferred embodiments, the length of the outer ring probe 3 is 1.05-1.2 times of the length of the inner ring probe 2, and the outer ring probe 3 has a comfortable spreading angle when the electrode is in use by combining the inclination angle of the outer ring probe 3.
It is worth mentioning that the specific design of the length of the outer ring probe 3 is obtained by calculating according to a trigonometric function relationship: the outer ring probe 3 positioned outside the inner ring probe 2 is extruded at a controllable 2-time inclination angle theta (9-17 degrees) to enable the feeler end of the outer ring probe to be flush with the feeler end of the inner ring probe 2, so that the feeler end is formed by1=l2The value of/cos 2 theta is known (l)1、l2The lengths of the outer ring probe 3 and the inner ring probe 2 are respectively referred to), therefore, the length of the outer ring probe 3 is 1.05-1.2 times of the length of the inner ring probe 2 according to theta =9-17 degrees and correspondingly calculated, so that when the electrode is in a non-use state, a concave step groove surface can be formed on the feeler end surface of the probe at the periphery of the base 1, and when the electrode is in a use state, a collection surface which is attached to the skin of the head and is formed by the feeler end of the outer ring probe 3 and the feeler end of the inner ring probe 2 can be pressed.
In some preferred embodiments, the inner ring probe 2 is thicker than the outer ring probe 3, and the outer ring probe 3 is designed to be thinner than the inner ring probe 2 for better flexibility, enhanced wearing comfort, and for easy expansion of the outer ring probe 3.
In some preferred embodiments, the inner ring probe 2 is a cylindrical, prismatic, circular truncated cone, or truncated pyramid-shaped finger probe, and the outer ring probe 3 is a cylindrical, prismatic, circular truncated cone, or truncated pyramid-shaped finger probe.
In some preferred embodiments, the inner ring probe 2 and the outer ring probe 3 are preferably designed in a cylindrical shape, the outer ring probe 3 in the cylindrical design is beneficial to unfolding, and the discomfort caused by the side wall abutting against the skin of the head after unfolding can be reduced due to the smooth curved surface; in addition, the top surface of the antenna end of the cylindrical inner ring probe 2 is circular, so that the hair can be pulled open by fully utilizing the curve edge and the sufficient contact area with the skin of the head can be ensured.
In addition, when the inner ring probe 2 and the outer ring probe 3 are designed to be cylindrical, the radius of the antenna end of the inner ring probe 2 is designed by referring to the average distance of human hair roots, the radius is set to be 0.3-0.6mm, the distance of the connecting line corresponding to the center of the antenna end of the adjacent inner ring probe 2 is 1.2-1.5mm, namely the distance between the centers of the antenna ends of the adjacent inner ring probes 2 is 1.2-1.5mm, so that the inner ring probe 2 can effectively open hair and ensure that the antenna ends can fully avoid the hair roots to be in close contact with the skin of the head.
In some preferred embodiments, when the inner ring probe 2 and the outer ring probe 3 are designed to be cylindrical, the radius of the antenna end of the outer ring probe 3 is 0.6-0.8 times that of the antenna end of the inner ring probe 2.
According to the flexible dry-type brain electrode, the hair can be pulled open by rotating the base 1 through the inner ring probe 2, so that the inner ring probe 2 can be ensured to be in close contact with the skin of the head and directly reach the cortex of the head, and the contact impedance of the electrode and the skin is reduced; and an external auxiliary limiting device is not needed, and only an annular plane which is formed by the outer ring probe 3 group and is higher than the inner ring probe 2 can be inserted between the hair tips under the action of pressure to play a fixing role, so that the motion artifact caused by motion displacement when the electrode is worn is effectively reduced, and the electrode can be matched with the inner ring probe 2 to obtain an electroencephalogram signal with high signal-to-noise ratio.
In addition, the embodiment of the present application also provides a method for using the flexible dry brain electrode, as shown in fig. 4, the method for using the flexible dry brain electrode comprises the following steps:
s1, placing the flexible dry-type brain electrode on the head, and enabling the inner ring probe 2 to face one side of the head and the outer ring probe 3 to be attached to the head;
s2, poking the flexible dry brain electrode, and poking hair by using the inner ring probe 2;
s3, the flexible dry type electroencephalogram electrode is fixed to the head by applying pressure so that the outer ring probe 3 is spread outward and the inner ring probe 2 is attached to the skin of the head.
In the using method of the flexible dry type brain electrode, the hairs are pulled away by the inner ring probe 2, the antenna end of the inner ring probe 2 can touch the skin of the head, so that the problem that the hairs increase impedance is effectively avoided, the outer ring probe 3 which is spread out in a matched mode can ensure that in the collecting process, the inner ring probe 2 can be in close contact with the skin of the head, the electrode can be in a static state relative to the head, stable and accurate brain signals can be collected under the condition that motion artifacts are effectively reduced, and the flexible dry type brain electrode is suitable for being worn for a long time.
In certain preferred embodiments, the act of applying pressure in step S3 may be performed by a brain cap or a headband or a band, preferably a brain cap; the outer ring probe 3 can be spread out through electroencephalogram cap pressure test, the position of the electrode on the head can be fixed, so that the electrode does not need to adopt additional auxiliary equipment for limiting the positions around the electrode, the electrode has the characteristics of convenience in use and stability in installation, and the problem of motion artifacts caused by motion displacement when the electrode is worn can be effectively avoided.
The present invention is further illustrated by the following specific examples.
Example 1:
the flexible dry brain electrode in the present embodiment includes: a circular base 1; a plurality of inner ring probes 2 which are arrayed and vertically arranged on the base 1; a plurality of outer lane probes 3 that have flexibility are located the inner circle probe 2 outside and locate base 1 to the slope outwards, and outer lane probes 3 are the ring and distribute, and the feeler end of outer lane probes 3 is higher than the feeler end of inner circle probe 2.
Wherein, the inner ring probes 2 are in an equidistant array and have a circular expansion as shown in fig. 2, in this embodiment, the number of the inner ring probes 2 is 37.
Wherein, outer lane probe 3 is for following the equidistant distribution that the ring set up, and sets up to the form of dual ring to the centre of a circle with circular base 1 is axisymmetric form setting, outer lane probe 3 dislocation design on the dual ring shirt, and quantity is unanimous, is 16.
As shown in fig. 3, in a non-use state, the antenna end of the outer ring probe 3 is cut into a planar shape, the antenna end of the inner ring probe 2 is cut into another planar shape, and the two planar shapes are staggered to form a concave stepped groove surface.
In the embodiment, the base 1, the inner ring probe 2, and the outer ring probe 3 are integrally formed, and are made of a flexible conductive polymer in which conductive filler particles are mixed in a mass ratio of 45%.
In this embodiment, the radius of the inner ring probe 2 is 0.5mm, the radius of the outer ring probe 3 located on the inner ring is 0.4mm, the radius of the outer ring probe 3 located on the outer ring is 0.3mm, the array pitch of the inner ring probes 2, that is, the distance between centers of adjacent inner ring probes 2, is 1.3mm, the radius of the circular base 1 is 7.5mm, the thickness is 2.0mm, the inclination angle θ of the outer ring probe 3 is 10 °, the length of the inner ring probe 2 is 5.0mm, and the length of the outer ring probe 3 is 6.0 mm.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US12178580B2 (en) | 2019-12-23 | 2024-12-31 | Alimetry Limited | Electrode patch and connection system |
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| CN113208598A (en) * | 2021-04-22 | 2021-08-06 | 北京脑陆科技有限公司 | Bioelectric signal acquisition device |
| CN113261964A (en) * | 2021-05-28 | 2021-08-17 | 北京脑陆科技有限公司 | Cup-shaped electrode |
| KR102625028B1 (en) * | 2021-05-28 | 2024-01-16 | 주식회사 아이메디신 | Probe for measuring bio-signal and bio-signal measuring sensor unit comprising the same |
| CN113261979B (en) * | 2021-07-19 | 2021-10-08 | 季华实验室 | Tinnitus identification system based on electroencephalogram signals |
| CN113974637B (en) * | 2021-12-23 | 2022-04-15 | 天津大学 | Novel highly comfortable elastic electroencephalogram dry electrode, electroencephalogram equipment and application system |
| CN114176608B (en) * | 2021-12-28 | 2024-04-30 | 西安臻泰智能科技有限公司 | Dry electrode electroencephalogram acquisition module and electroencephalogram acquisition system |
| CN114711776A (en) * | 2022-04-15 | 2022-07-08 | 脑陆(重庆)智能科技研究院有限公司 | Electric signal collecting head and bioelectric signal collecting equipment |
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| CN104799853A (en) * | 2015-04-09 | 2015-07-29 | 中国科学院半导体研究所 | Tough claw type dry electrode used for recording electroencephalogram and preparation method |
| CN207821815U (en) * | 2017-06-16 | 2018-09-07 | 华南理工大学 | A kind of flexibility dry-type electrode |
| CN209490010U (en) * | 2018-09-06 | 2019-10-15 | 北京理工大学 | EEG Cap Retractable EEG Acquisition Dry Electrode and System |
| CN212089527U (en) * | 2020-03-10 | 2020-12-08 | 西安慧脑智能科技有限公司 | Multichannel electroencephalogram signal acquisition instrument |
| CN112043266A (en) * | 2020-09-29 | 2020-12-08 | 江苏集萃脑机融合智能技术研究所有限公司 | A comb-shaped EEG dry electrode wearable device |
| CN212326420U (en) * | 2020-10-10 | 2021-01-12 | 江苏集萃脑机融合智能技术研究所有限公司 | Contact surface self-adaptive electroencephalogram dry electrode |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12178580B2 (en) | 2019-12-23 | 2024-12-31 | Alimetry Limited | Electrode patch and connection system |
| US12245862B2 (en) | 2019-12-23 | 2025-03-11 | Alimetry Limited | Electrode patch and connection system |
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