Electroencephalogram acquisition device and electroencephalogram acquisition apparatus

Abstract

Embodiments of the present application provide an electroencephalogram acquisition device and an electroencephalogram acquisition apparatus. The electroencephalogram acquisition device comprises an electroencephalogram acquisition sub-device, which comprises an acquisition seat comprising a frame body with a hexagonal shape and a center area protruding outward, and seven mounting portions provided on the frame body, the seven mounting portions comprising a first mounting portion located at the center area, six second mounting portions located around the first mounting portion, a center distance between each second mounting portion and the first mounting portion, and a center distance between adjacent two second mounting portions having a predetermined value, and a distance from the center of each second mounting portion to two outer edges of the frame body adjacent to the second mounting portion being less than or equal to half of the predetermined value; and an electrode assembly, at least one of the seven mounting portions being detachably mounted with the electrode assembly, the electrode assembly comprising an electrode, an acquisition end of the electrode being located on a virtual arc surface inside the acquisition seat. The electroencephalogram acquisition device can be used to acquire signals of the whole brain or specific brain areas.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electroencephalogram measurement, in particular to an electroencephalogram acquisition device and an electroencephalogram acquisition equipment with the same. BACKGROUND

[0002] Electroencephalogram (EEG) is a non-invasive technique for measuring brain electrical activity, widely used in neuroscience, neuroengineering, medical diagnosis, rehabilitation treatment and brain-computer interface (BCI) fields. Analysis of EEG signals can reveal the activity state of the brain, provide diagnostic basis for neurological diseases such as epilepsy, insomnia, depression and Parkinson's disease, and play an increasingly important role in the rehabilitation training of patients with consciousness disorders and motor control disorders.

[0003] The electroencephalogram acquisition device can acquire signals of the brain through electrodes thereon. The conventional electroencephalogram acquisition device is usually designed as a fixed electrode array. In this way, the electrodes are arranged in a fixed arrangement to cover the head of the subject. However, different application scenarios and individual needs may require the electrodes to acquire signals of specific brain regions. For example, the brain-computer interface (BCI) technology often focuses on acquiring signals of the motor cortex or visual cortex, while epilepsy diagnosis may require acquiring signals of a wider brain region. The diversity of such needs limits the flexibility and applicability of the electroencephalogram acquisition device with fixed electrode array, resulting in poor applicability in different clinical or research situations. SUMMARY

[0004] In order to at least partially solve the problems existing in the prior art, according to one aspect of the present application, an electroencephalogram acquisition device is provided. The electroencephalogram acquisition device comprises an electroencephalogram acquisition sub-device, which comprises: an acquisition seat comprising a frame body with a hexagonal shape and a central region protruding outward, and seven mounting portions provided on the frame body, the seven mounting portions comprising a first mounting portion located at the central region, and six second mounting portions located around the first mounting portion, each of the second mounting portions being provided corresponding to a vertex of the frame body, a center distance between each of the second mounting portions and the first mounting portion having a predetermined value, a center distance between any two adjacent second mounting portions having the predetermined value, and a distance from a center of each of the second mounting portions to two outer edges of the frame body adjacent to the second mounting portion being less than or equal to half of the predetermined value; and an electrode assembly, at least one of the seven mounting portions being detachably mounted with the electrode assembly, the electrode assembly comprising an electrode, the electrode facing an inner side of the acquisition seat, and an acquisition end of the electrode being located on a virtual arc surface on the inner side of the acquisition seat.

[0005] Exemplarily, the seven mounting portions are respectively configured as mounting sleeves, and the electrode assembly further comprises an electrode base, the electrode is connected to an inner end of the electrode base, and an outer end of the electrode base is inserted into and connected to the mounting sleeves.

[0006] Exemplarily, the electrode assembly further comprises a base gland, the base gland comprises a connecting portion and a nut, the connecting portion is connected between the outer end of the electrode base and the nut, so that the nut surrounds the electrode base and is spaced apart from the electrode base, the mounting sleeve has a protruding segment protruding outwardly from the frame body, and external threads on an outer peripheral wall of the protruding segment are threadedly connected to internal threads on an inner peripheral wall of the nut.

[0007] Exemplarily, an annular clamping groove is arranged on an outer peripheral wall of the electrode base, and the connecting portion is detachably clamped into the annular clamping groove.

[0008] Exemplarily, the electrode assembly further comprises an electrode base and an elastic member, the outer end of the electrode base is detachably mounted to any one of the seven mounting portions, and the elastic member is connected between the inner end of the electrode base and the outer end of the electrode.

[0009] Exemplarily, the electrode assembly further comprises an electrode connecting seat and an electrode gland, the elastic member is connected between the inner end of the electrode base and an outer end of the electrode connecting seat, the electrode gland is threadedly connected to an inner end of the electrode connecting seat, and the electrode is detachably clamped to the electrode gland.

[0010] Exemplarily, a connecting sheet is arranged in the electrode connecting seat, an outer end of the connecting sheet is connected with a lead wire passing through the electrode base, and an outer end of the electrode contacts an inner end of the connecting sheet when the electrode gland is threadedly connected to the inner end of the electrode connecting seat.

[0011] Exemplarily, a reinforcing rib is connected between two adjacent mounting portions of the seven mounting portions.

[0012] Exemplarily, the radius of the virtual arc surface is between 50 mm and 70 mm.

[0013] Exemplarily, the electroencephalogram acquisition device comprises a splicing piece and a plurality of the electroencephalogram acquisition sub-devices, two adjacent electroencephalogram acquisition sub-devices have adjacent and oppositely arranged outer edges, and the splicing piece is connected to the oppositely arranged two outer edges.

[0014] Exemplarily, two splicing grooves are arranged on the splicing piece, and the oppositely arranged two outer edges are one-to-one clamped into the splicing grooves.

[0015] Exemplarily, the electroencephalogram acquisition device comprises an electroencephalogram acquisition sub-device, the electroencephalogram acquisition sub-device comprises an acquisition seat, the acquisition seat comprises a frame body, a plurality of mounting portions are uniformly distributed on the frame body, the center distance between adjacent mounting portions in the plurality of mounting portions is a predetermined value, and the frame body is configured to be spliced with other electroencephalogram acquisition sub-devices along a plurality of splicing directions, wherein: along each of the plurality of splicing directions, the distance from the center of the mounting portion on the edge region of the frame body to the outer edge of the frame body is less than or equal to half of the predetermined value, so that the center distance between the mounting portion on the edge region of the frame body and the mounting portion of the other electroencephalogram acquisition sub-device has the predetermined value; and an electrode assembly is detachably mounted on at least one of the plurality of mounting portions, the electrode assembly comprises an electrode, the electrode faces the inside of the acquisition seat, and the acquisition end of the electrode is located on a virtual arc surface inside the acquisition seat.

[0016] Exemplarily, the electroencephalogram acquisition sub-device has the same configuration as the other electroencephalogram acquisition sub-devices.

[0017] According to another aspect of the present application, an electroencephalogram acquisition device is also provided. The electroencephalogram acquisition device comprises a head-mounted device and the electroencephalogram acquisition device as described in any of the above, the acquisition seat is connected to the head-mounted device, and the acquisition end of the electrode contacts the head of the subject when the head-mounted device is worn on the head of the subject.

[0018] The electroencephalogram acquisition device provided by the embodiments of the present application can have a modular design. In this way, the electroencephalogram acquisition device can select any number of electroencephalogram acquisition sub-devices according to requirements, and splice the electroencephalogram acquisition sub-devices into any suitable shape to cover different areas and / or shapes of the head region, so as to acquire signals of the target brain region. In this way, the electroencephalogram acquisition device can be used to acquire signals of the whole brain or a specific brain region, so as to meet various requirements. Moreover, since the mounting portions are uniformly distributed, the density of the electrodes can be relatively uniform, so as to improve the quality of the acquired signals. In addition, since the electrodes are detachable, the electrodes can be mounted according to requirements to acquire a specific brain region. In this way, by flexibly splicing the electroencephalogram acquisition sub-devices and flexibly mounting the electrodes, the electrodes have high degrees of freedom, so as to have different densities, and thus the electroencephalogram acquisition of the target brain region can be performed at various densities, the signals of any brain region can be flexibly and efficiently acquired, and the waste of electrodes caused by setting redundant electrodes can be avoided.

[0019] A series of simplified concepts are introduced in the summary, which will be further described in detail in the specific embodiments. The summary part does not mean to try to limit the key features and necessary technical features of the claimed technical solutions, nor to try to determine the protection scope of the claimed technical solutions.

[0020] The advantages and features of the present application will be described in detail based on the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0021] The following drawings are included herewith as part of the present application to assist in understanding the application. The present application is illustrated by way of example and not limitation in the figures of the accompanying drawings in which:

[0022] Figure 1 is a top view of an electroencephalogram acquisition device according to an exemplary embodiment of the present application;

[0023] Figure 2 is a front view of the electroencephalogram acquisition device shown in FIG. 1; Figure 1

[0024] Figure 3 is a front view of the electroencephalogram acquisition device shown in FIG. 2; Figure 2

[0025] Figure 4 is a cross-sectional view of the electroencephalogram acquisition device shown in FIG. 3; Figure 3

[0026] Figure 5 is a front view of the electroencephalogram acquisition sub-device shown in FIG. 4; Figure 3

[0027] Figure 6 is a cross-sectional view of the electroencephalogram acquisition sub-device shown in FIG. 5; Figure 5

[0028] Figure 7 is a front view of the acquisition seat shown in FIG. 6; Figure 5

[0029] Figure 8 is a cross-sectional view of the acquisition seat shown in FIG. 7; Figure 7

[0030] Figure 9 is an enlarged view of a portion of the acquisition seat shown in FIG. 8; Figure 8

[0031] Figure 10 is a front view of an electrode assembly according to an exemplary embodiment of the present application; and Figure 5

[0032] Figure 11 is a cross-sectional view of the electrode assembly shown in FIG. 10. Figure 10 In the above-described drawings, reference numerals include the following:

[0033]

[0034] ​​​​​​​​​​100. EEG acquisition device; 110. EEG acquisition sub-device; 120. Virtual arc surface; 200. Acquisition base; 210. Frame; 211. Central region; 212. Edge region; 213. Outer edge; 220. Mounting part; 221. First mounting part; 222. Second mounting part; 230. Mounting sleeve; 231. Protruding section; 240. Reinforcing rib; 300. Electrode assembly; 310. Electrode; 311. Acquisition end; 320. Electrode base; 321. Annular groove; 330. Base cover; 331. Connecting part; 332. Nut; 340. Elastic element; 350. Electrode connector; 360. Electrode cover; 370. Connecting piece; 380. Wire; 400. Splicing piece; 410. Splicing groove; 500. Headgear; 510. Headgear base; 520. Connecting strap; 530. Tensioner. Detailed Implementation

[0035] In the following description, numerous details are provided to enable a thorough understanding of the invention. However, those skilled in the art will appreciate that the following description merely illustrates preferred embodiments of the invention, and that the invention can be practiced without one or more of these details. Furthermore, to avoid obscuring the invention, some technical features well-known in the art have not been described in detail.

[0036] According to one aspect of the present invention, an electroencephalogram (EEG) acquisition device is provided. The EEG acquisition device can be applied to any suitable device, including but not limited to EEG acquisition equipment. Therefore, according to another aspect of the present invention, an EEG acquisition device is also provided. The EEG acquisition device and EEG acquisition equipment according to embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0037] like Figures 3-11 As shown, the EEG acquisition device 100 may include any number of EEG acquisition sub-devices 110, such as one, two, three or more. The EEG acquisition sub-device 110 may include an acquisition base 200 and an electrode assembly 300.

[0038] The collection seat 200 can include a frame 210 and a plurality of mounting portions 220. The plurality of mounting portions 220 can be evenly distributed on the frame 210. In this way, the center distance between adjacent mounting portions 220 on the frame 210 can each have a predetermined value. The number of mounting portions 220 can be two, three or more. In the embodiment shown in the figure, the number of mounting portions 220 can be seven. Each mounting portion 220 can be used to mount an electrode assembly 300. The structure of the mounting portion 220 can be arbitrary, including but not limited to buckles, pins or clamping jaws, as long as the electrode assembly 300 can be mounted. The frame 210 can be configured to splice other electroencephalogram collection sub-devices 110 along a plurality of splicing directions. In this way, the electroencephalogram collection sub-device 110 can be spliced with other electroencephalogram collection sub-devices 110 along a plurality of splicing directions. In this way, a plurality of electroencephalogram collection sub-devices 110 can be spliced into any suitable shape, such as a long strip or a generally circular sheet. Among them: along each of the plurality of splicing directions, the center of the mounting portion 220 located on the edge region 212 of the frame 210 to the outer edge 213 of the frame 210 The distance can be less than or equal to half of the predetermined value. The plurality of electroencephalogram collection sub-devices 110 can achieve seamless splicing. In this way, the center distance between the mounting portion 220 on the edge region 212 of the frame 210 and the mounting portion 220 of the other electroencephalogram collection sub-device 110 can have a predetermined value. In this way, among the spliced plurality of electroencephalogram collection sub-devices 110, the mounting portions 220 can also be evenly distributed.

[0039] Exemplarily, the electroencephalogram collection device 100 can also include a splicing piece 400. Two adjacent electroencephalogram collection sub-devices 110 can have adjacent and oppositely arranged outer edges 213. The splicing direction can be a direction perpendicular to the outer edge 213. The splicing piece 400 can be connected to the two oppositely arranged outer edges 213. By providing the splicing piece 400, the two adjacent electroencephalogram collection sub-devices 110 can be relatively fixed. The structure of the splicing piece 400 can have various forms, such as buckles, pins or clamping jaws. In some embodiments, the splicing piece 400 can be provided with two splicing grooves 410. The two oppositely arranged outer edges 213 can be correspondingly clamped to the splicing grooves 410. In this way, the structure of the splicing piece 400 is relatively simple, and the two adjacent electroencephalogram collection sub-devices 110 can be easily spliced and separated.

[0040] Exemplarily, the frame 210 can be hexagonal. The hexagonal shape includes, but is not limited to, regular hexagonal, rounded hexagonal, or other shaped hexagonal. Thus, the frame 210 can have six outer edges 213. Each EEG acquisition sub-device 110 can be generally honeycomb-shaped. The EEG acquisition sub-device 110 can be connected to other EEG acquisition sub-devices 110 along six connection directions. Compared with other shaped frames 210, the EEG acquisition sub-devices 110 can be connected to form any suitable shape, such as a long strip shape or a generally circular sheet shape. The frame 210 can also have a central region 211 at the center of the edge region 212. The central region 211 can be convex outward. Thus, the frame 210 can be arc-shaped, or a shape composed of multiple planes similar to a diamond. In this way, the shape of the frame 210 can generally fit the head of the subject. The orientation term "outer" used herein and hereinafter refers to the side away from the head of the subject when the EEG acquisition device 100 is worn on the head of the subject. Therefore, the orientation term "inner" used hereinafter refers to the side close to the head of the subject when the EEG acquisition device 100 is worn on the head of the subject. The term "head" used in the present application refers to the organs above the neck (cervical vertebra) of the human body, including the brain and extracerebral tissues such as skull, skin, and hair. The term "brain" used in the present application refers to the organ left after removing extracerebral tissues, and is mainly intended to refer to the brain, but is not limited thereto, and can also include the cerebellum and brainstem.

[0041] In the embodiment in which seven mounting portions 220 are provided on the frame 210, the seven mounting portions 220 can include a first mounting portion 221 and six second mounting portions 222. The first mounting portion 221 can be located at the central region 211. The six second mounting portions 222 can be located at the edge region 212 and around the first mounting portion 221. Each second mounting portion 222 can be provided corresponding to a vertex of the frame 210. That is, the hexagonal frame 210 can have six vertices. Each vertex can correspond to a second mounting portion 222. The center distance between each second mounting portion 222 and the first mounting portion 221 can have a predetermined value. The center distance between any two adjacent second mounting portions 222 can have a predetermined value. In this way, the seven mounting portions 220 can be evenly distributed on the frame 210. The distance from the center of each second mounting portion 222 to two outer edges 213 adjacent to the second mounting portion 222 of the frame 210 can be less than or equal to half of the predetermined value. It should be noted that the distance from the center of the second mounting portion 222 to the two outer edges 213 adjacent to the second mounting portion 222 of the frame 210 refers to the distance from the center of the second mounting portion 222 to the foot of the perpendicular of the two adjacent outer edges 213. In this way, the splicing direction can be the direction perpendicular to the six outer edges 213. In this way, the electroencephalogram acquisition sub-device 110 can be spliced with other electroencephalogram acquisition sub-devices 110 along the six splicing directions. The electroencephalogram acquisition sub-device 110 can achieve seamless splicing to form a structure similar to a spherical shell, so as to adapt to the shape of the head of the subject.

[0042] At least one of the seven installation portions 220 is detachably installed with an electrode assembly 300. That is, the electrode assembly 300 is detachably installed to at least one of the seven installation portions 220, for example, to each of the installation portions 220. The electrode assembly 300 can include an electrode 310. The electrode 310 can adopt various types of electrodes known in the art or to be developed in the future, including but not limited to a conductive paste electrode, a saline electrode, a gel electrode, a dry electrode, or a heart electro-buckle electrode. The electrodes 310 on different electrode assemblies 300 can be the same or different. The electrode 310 can be directed toward the inner side of the collection seat 200. The inner end of the electrode 310 can be configured as a collection end 311. The collection end 311 can be used to collect signals of the brain of a subject. The collection end 311 of the electrode 310 can be located on the virtual arc surface 120 on the inner side of the collection seat 200. When the plurality of electroencephalogram collection sub-devices 110 are spliced, the collection ends 311 of the electrodes 310 on the plurality of electroencephalogram collection sub-devices 110 can all be located on the virtual arc surface 120. Since the central region 211 protrudes outward, the virtual arc surface 120 can protrude outward, which can be more suitable for the shape of the head of the subject. Exemplarily, the radius R of the virtual arc surface 120 can be between 50 mm and 70 mm, for example, can be 50 mm, 55 mm, 60 mm, 65 mm, or 70 mm. In this way, the shape of the virtual arc surface 120 is more suitable for the shape of the head of the subject, so that the collection end 311 of the electrode 310 can be facilitated to contact the head of the subject, avoiding the occurrence of a bad lead.

[0043] In actual application, the electroencephalogram collection device 100 can be worn on the head of a subject. The electroencephalogram collection sub-device 110 can be spliced into any suitable shape to cover the corresponding head region, so that the collection end 311 of the electrode 310 can collect signals of the target brain region. Exemplarily, when the signals of the frontal lobe need to be collected, one or more electroencephalogram collection sub-devices 110 can cover the forehead of the head; when the signals of the occipital lobe need to be collected, one or more electroencephalogram collection sub-devices 110 can cover the back of the head.

[0044] In summary, the electroencephalogram acquisition device 100 provided by the embodiment of the present application has a modular design. In this way, the electroencephalogram acquisition device 100 can select any number of electroencephalogram acquisition sub-devices 110 according to requirements, and splice the electroencephalogram acquisition sub-devices 110 into any suitable shape to cover different areas and / or shapes of the head region, so as to acquire signals of the target brain region. In this way, the electroencephalogram acquisition device 100 can be used to acquire signals of the whole brain or a specific brain region, so as to meet various requirements. Moreover, since the mounting portions 220 can be uniformly distributed, the density of the electrodes 310 can be relatively uniform, so as to improve the quality of the acquired signals. In addition, since the electrodes 310 are detachable, the electrodes 310 can be installed according to requirements to acquire a specific brain region. In this way, by flexibly splicing the electroencephalogram acquisition sub-devices 110 and flexibly installing the electrodes 310, the electrodes 310 have high degrees of freedom, so as to have different densities, and thus the electroencephalogram acquisition of the target brain region can be performed at various densities, the signals of any brain region can be flexibly and efficiently acquired, and the waste of the electrodes 310 caused by the setting of redundant electrodes 310 is avoided.

[0045] Moreover, since each electroencephalogram acquisition sub-device 110 is hexagonal, the structure is relatively compact, and the size in any direction is relatively uniform, so as to facilitate the electrodes 310 to contact the head of the examinee. In addition, in actual applications, most cases are to acquire signals of the frontal lobe or the temporal lobe, and the head region corresponding to these brain regions can generally be in the form of a circular sheet, so the hexagonal electroencephalogram acquisition sub-device 110 itself or the hexagonal electroencephalogram acquisition sub-device 110 spliced with other electroencephalogram acquisition sub-devices 110 is relatively suitable for the circular sheet-shaped head region.

[0046] For example, the electroencephalogram acquisition sub-device 110 and other electroencephalogram acquisition sub-devices 110 can have the same structure. It should be noted that the "same structure" means that the electroencephalogram acquisition sub-device 110 and other electroencephalogram acquisition sub-devices 110 have the same functions and substantially the same structure, but not exactly the same. The same number or different number of electrodes 310 can be installed on different electroencephalogram acquisition sub-devices 110, for example, seven electrodes 310 can be installed on the electroencephalogram acquisition sub-device 110, and six electrodes 310 can be installed on other electroencephalogram acquisition sub-devices 110. Moreover, the same type or different type of electrodes 310 can be installed on different electroencephalogram acquisition sub-devices 110.

[0047] In the embodiment in which the electroencephalogram acquisition device 100 is applied to the electroencephalogram acquisition equipment, as shown in Figures 1-2As shown, the electroencephalogram acquisition device can further comprise a headgear 500. The acquisition seat 200 can be connected to the headgear 500. The electroencephalogram acquisition device 100 can be worn on the head of the subject through the headgear 500. The headgear 500 can comprise, but is not limited to, a cap-shaped device or a belt-shaped device. When the headgear 500 is worn on the head of the subject, the acquisition end 311 of the electrode 310 can contact the head of the subject.

[0048] Exemplarily, the headgear 500 can comprise a headgear base 510, connecting belts 520 and a tightener 530. When the headgear 500 is worn on the head of the subject, the headgear base 510 can be located on the top of the head of the subject. The acquisition seat 200 can be connected to the headgear base 510. The connecting belts 520 can comprise two. The two connecting belts 520 can be connected downward from the left and right sides of the headgear base 510 to the tightener 530. The headgear base 510, the connecting belts 520 and the tightener 530 can form a closed ring to surround the head of the subject. When the headgear 500 is worn on the head of the subject, the tightener 530 can be located below the head of the subject. The tightener 530 can be moved along the connecting belts 520. By moving the tightener 530 to a suitable position, the size of the closed ring can be controlled, so that it can be adapted to the heads of different subjects. Moreover, the headgear 500 can facilitate wearing.

[0049] Exemplarily, the seven mounting portions 220 can be respectively configured as mounting sleeves 230. The electrode assembly 300 can further comprise an electrode base 320. The electrodes 310 can be connected to the inner end of the electrode base 320 by any suitable manner, such as insertion, threaded connection or connector connection. The electrodes 310 can be directly or indirectly connected to the inner end of the electrode base 320 through other components. The outer end of the electrode base 320 can be inserted and connected to the mounting sleeves 230. The outer end of the electrode base 320 can be connected to the mounting sleeves 230 in any manner, including but not limited to insertion, threaded connection or connector connection. The electrode base 320 can be directly or indirectly connected to the mounting sleeves 230 through other components. In this way, the mounting sleeves 230 can position the electrode base 320, so that the mounting precision of the electrodes 310 can be higher. Moreover, the structure of the mounting portions 220 is relatively simple, which facilitates processing and manufacturing.

[0050] Exemplarily, the electrode assembly 300 can further comprise a base gland 330. The base gland 330 can comprise a connecting portion 331 and a nut 332. The connecting portion 331 can be connected between the outer end of the electrode base 320 and the nut 332, so that the nut 332 surrounds and is spaced apart from the electrode base 320. The mounting sleeve 230 can have a protruding section 231 protruding outwardly from the frame 210. The external thread on the outer peripheral wall of the protruding section 231 can be threadedly connected to the internal thread on the inner peripheral wall of the nut 332. In this way, the protruding section 231 can extend into the space between the nut 332 and the electrode base 320. In this way, the base gland 330 can be threadedly connected to the mounting sleeve 230, so that it can be conveniently mounted and dismounted. Moreover, when the base gland 330 is connected in place with the mounting sleeve 230, the protruding section 231 can abut against the connecting portion 331. With the liquid injection, the connecting portion 331 can function as a limiting portion, so that it can ensure that the base gland 330 is fully connected with the mounting sleeve 230. The external thread on the outer peripheral wall of the protruding section 231 can extend to the entire outer peripheral wall of the mounting sleeve 230. In this way, the mounting sleeve 230 can be threadedly connected to the frame 210 of the collection seat 200.

[0051] Exemplarily, the outer peripheral wall of the electrode base 320 can be provided with an annular clamping groove 321. The connecting portion 331 can be detachably clamped into the annular clamping groove 321. The connecting portion 331 can have a certain elasticity, so that it can be conveniently clamped into the annular clamping groove 321. Exemplarily, the connecting portion 331 can also be annular. In this way, the base gland 330 can be conveniently connected and dismounted. In this way, when the electroencephalogram collection device 100 is used for a period of time, the nut 332 can be worn due to the repeated thread connection with the protruding section 231. In this way, the connecting portion 331 can be detached from the annular clamping groove 321, so that a new base gland 330 can be replaced. In this way, the electrode base 320 can be replaced without the need to replace the electrode base 320, so that the use cost can be reduced.

[0052] Exemplarily, the electrode assembly 300 can further include an elastic member 340. The outer end of the electrode base 320 can be detachably mounted to any one of the seven mounting portions 220. The elastic member 340 can be connected between the inner end of the electrode base 320 and the outer end of the electrode 310. The elastic member 340 can be directly or indirectly connected to the outer end of the electrode 310 through other components. The elastic member 340 can include a spring or an elastic member made of an elastic material such as rubber, as long as it can have elasticity. By providing the elastic member 340, when the electroencephalogram acquisition device 100 is worn on the head of the subject, the acquisition end 311 of the electrode 310 can be pressed against the head of the subject by adjusting the tightener 530 or any suitable manner such as pushing the frame 210. At this time, the elastic member 340 can be compressed, so that an elastic force towards the head of the subject can be applied to the electrode 310, and thus the acquisition end 311 of the electrode 310 can be tightly attached to the head of the subject, avoiding poor contact caused by the elasticity of the hair of the subject, and thus avoiding the problem of bad lead. The acquisition end 311 of the electrode 310 can stably contact the head of the subject, so as to improve the quality of the acquired signal. Moreover, according to different sizes and / or shapes of the head of the subject, and different hair quality and quantity, the elastic member 340 can realize automatic adjustment of deformation, that is, it can realize adjustment of different distances and different angles in the direction under the action of compression, so as to tightly attach the acquisition end 311 of the electrode 310 to the head of the subject, and the applicability of the electroencephalogram acquisition device 100 is higher.

[0053] Exemplarily, the electrode assembly 300 can further include an electrode connecting seat 350 and an electrode gland 360. The elastic member 340 can be connected between the inner end of the electrode base 320 and the outer end of the electrode connecting seat 350. The electrode gland 360 can be threadedly connected to the inner end of the electrode connecting seat 350. The electrode 310 can be detachably clamped to the electrode gland 360. The electrode gland 360 can have a cavity inside. The electrode 310 can be inserted into the cavity. In this way, different electrode glands 360 can be replaced according to different electrodes 310. Moreover, different electrodes 310 can be replaced according to actual use requirements. In this way, the applicability of the electroencephalogram acquisition device 100 is higher, so as to cope with different acquisition scenes.

[0054] Exemplarily, the electrode connecting seat 350 can be provided with a connecting sheet 370. The connecting sheet 370 includes but is not limited to a silver / silver chloride sheet. An outer end of the connecting sheet 370 can be connected with a lead wire 380. The lead wire 380 can pass through the electrode base 320, so as to be led out through an outer end of the electrode base 320. The lead wire 380 can be used to be connected to an amplifier, so as to be connected to a computer or the like through the amplifier. Therefore, the electroencephalogram acquisition device 100 can further include an amplifier. When the electrode gland 360 is screwed to an inner end of the electrode connecting seat 350, an outer end of the electrode 310 can be contacted to an inner end of the connecting sheet. In this way, the electrode 310 can be connected with the lead wire 380 through the connecting sheet 370. The signal acquired by the acquisition end 311 of the electrode 310 can be transmitted through the connecting sheet 370 and the lead wire 380, so as to be converted into a proper signal through the amplifier. In this way, the electrode 310 is more convenient to replace.

[0055] Exemplarily, the reinforcing ribs 240 can be connected between two adjacent installation portions 220 of the seven installation portions 220. In this way, the mechanical strength of the acquisition seat 200 is higher, and the stability of the signal acquired by the electroencephalogram acquisition device 100 is higher. The reinforcing ribs 240 connected between the adjacent second installation portions 222 can be extended and connected to form a virtual hexagon. The virtual hexagon can have the same center as the hexagon of the frame body 210. Moreover, the size ratio of the virtual hexagon to the hexagon of the frame body 210 can be 1:1.5.

[0056] In the description of the present application, it should be understood that the orientation words such as "front", "back", "up", "down", "left", "right", "transverse", "vertical", "vertical", "horizontal", and "top", "bottom" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate and imply that the devices or elements referred to must have a particular orientation or be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the scope of protection of the present application; the orientation words "inner", "outer" refer to the inner and outer of the contour of each component itself.

[0057] For purposes of the description hereinafter, the terms "upper", "lower", "right", "left", "rear", "front", "vertical", "horizontal", and derivatives thereof shall relate to the application as it is oriented in the drawing figures. However, it is to be understood that the application can assume various alternative orientations and, accordingly, such terms are not to be taken as limitations of the present application, except where so expressly defined by the patentee. All such terms are to be interpreted in the manner that the terms are construed in the section entitled, "Definition of Terms", recited below. It is also to be understood that the following description, together with the accompanying figures, will be used herein to describe the application.

[0058] It is to be understood that the terminology used herein is for the purpose of describing the particular embodiments only and is not intended to be limiting, unless the contrary is indicated herein. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising", when used in this specification, specify the presence of stated features, steps, operations, components, elements, and / or groups thereof, but do not preclude the presence or addition of one or more other features, steps, operations, components, elements, and / or groups thereof.

[0059] It will be understood that the terms "first", "second", etc. are used herein solely to distinguish one element from another, without necessarily limiting the scope of the application. It will be further understood that where a term is used in the singular, it is also intended to encompass the plural, unless the context clearly indicates otherwise.

[0060] The application has been described herein with reference to the preferred embodiments. Obviously, modifications and alterations will occur to others upon reading and understanding the preceding detailed description, and it is intended to include all such modifications and alterations insofar as they come within the scope of the appended claims and their equivalents.

Claims

1. An electroencephalogram acquisition device, characterized by, The brain electrical acquisition sub-device comprises: The acquisition seat comprises a frame body with a hexagonal shape and a center area protruding outward, and seven mounting portions provided on the frame body, the seven mounting portions comprising a first mounting portion at the center area, and six second mounting portions around the first mounting portion, each second mounting portion corresponding to a vertex of the frame body, the center distance between each second mounting portion and the first mounting portion having a predetermined value, the center distance between any two adjacent second mounting portions having the predetermined value, and the distance from the center of each second mounting portion to the two outer edges of the frame body adjacent to the second mounting portion being less than or equal to half of the predetermined value; and The electrode assembly is detachably mounted on at least one of the seven mounting portions, and the electrode assembly comprises an electrode, the electrode facing the inside of the acquisition seat, and the acquisition end of the electrode being located on a virtual arc surface inside the acquisition seat. The electrode assembly further comprises an electrode base and an elastic member, the outer end of the electrode base being detachably mounted on any one of the seven mounting portions, and the elastic member being connected between the inner end of the electrode base and the outer end of the electrode.

2. The electroencephalogram acquisition apparatus according to claim 1, wherein The seven mounting portions are respectively configured as mounting sleeves, and the electrode assembly further comprises an electrode base, the electrode being connected to the inner end of the electrode base, and the outer end of the electrode base being inserted into and connected to the mounting sleeve.

3. The electroencephalogram acquisition apparatus according to claim 2, wherein The electrode assembly further comprises a base gland, the base gland comprising a connecting portion and a nut, the connecting portion being connected between the outer end of the electrode base and the nut, so that the nut surrounds the electrode base and is spaced apart from the electrode base, the mounting sleeve having a protruding segment protruding outward from the frame body, and external threads on the outer peripheral wall of the protruding segment being threadedly connected to internal threads on the inner peripheral wall of the nut.

4. The electroencephalogram acquisition apparatus according to claim 3, wherein An annular clamping groove is provided on the outer peripheral wall of the electrode base, and the connecting portion is detachably clamped into the annular clamping groove.

5. The electroencephalogram acquisition apparatus according to claim 4, wherein The electrode assembly further comprises an electrode connecting seat and an electrode gland, the elastic member being connected between the inner end of the electrode base and the outer end of the electrode connecting seat, the electrode gland being threadedly connected to the inner end of the electrode connecting seat, and the electrode being detachably clamped to the electrode gland.

6. The electroencephalogram acquisition apparatus of claim 5, wherein, A connecting sheet is provided in the electrode connecting seat, an outer end of the connecting sheet being connected to a lead wire passing through the electrode base, and an outer end of the electrode being in contact with an inner end of the connecting sheet when the electrode gland is threadedly connected to the inner end of the electrode connecting seat.

7. The electroencephalogram acquisition apparatus of claim 1, wherein, A reinforcing rib is connected between any two adjacent mounting portions of the seven mounting portions.

8. The electroencephalogram acquisition apparatus of claim 1, wherein, The radius of the virtual arc surface is between 50 mm and 70 mm.

9. The electroencephalogram acquisition apparatus of claim 1, wherein, The brain electrical acquisition device comprises a plurality of brain electrical acquisition sub-devices and a splicing piece, and adjacent two brain electrical acquisition sub-devices have adjacent and oppositely arranged outer edges, and the splicing piece is connected to the oppositely arranged two outer edges.

10. The electroencephalogram acquisition apparatus of claim 9, wherein, Two splicing grooves are provided on the splicing piece, and the oppositely arranged two outer edges are one-to-one clamped into the splicing grooves.

11. An electroencephalogram acquisition device, characterized by The brain electrical acquisition sub-device comprises: The collection seat comprises a frame body, a plurality of mounting portions are uniformly distributed on the frame body, the center distance between adjacent mounting portions in the plurality of mounting portions has a predetermined value, and the frame body is configured to be spliced with other electroencephalogram collection sub-devices along a plurality of splicing directions, wherein: along each of the plurality of splicing directions, the distance from the center of the mounting portion on the edge region of the frame body to the outer edge of the frame body is less than or equal to half of the predetermined value, so that the center distance between the mounting portion on the edge region of the frame body and the mounting portion of the adjacent other electroencephalogram collection sub-device has the predetermined value; and An electrode assembly is detachably mounted on at least one of the plurality of mounting portions, the electrode assembly comprises an electrode, the electrode faces the inside of the collection seat, and the collection end of the electrode is located on a virtual arc surface inside the collection seat. The electrode assembly further comprises an electrode base and an elastic member, the outer end of the electrode base is detachably mounted to any one of the seven mounting portions, and the elastic member is connected between the inner end of the electrode base and the outer end of the electrode.

12. The electroencephalogram acquisition apparatus of claim 11, wherein, The electroencephalogram collection sub-device has the same structure as the other electroencephalogram collection sub-devices.

13. An electroencephalography acquisition device, comprising: The electroencephalogram collection device comprises a head-mounted device and any one of claims 1-12, the collection seat is connected to the head-mounted device, and the collection end of the electrode contacts the head of the subject when the head-mounted device is worn on the head of the subject.

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