Electrode structure, intracranial cortex signal acquisition device and brain wave monitoring system

Abstract

The utility model relates to an electrode structure, an intracranial cortex signal acquisition device and a brain wave monitoring system. An electrode point distribution section of a flexible substrate is provided with a plurality of hollow grooves which are uniformly distributed at intervals, and electrode points which are distributed in an array are arranged on the electrode point distribution section except for the hollow grooves; the wire integration section of the flexible substrate is provided with wires correspondingly connected with the electrode points. By arranging the hollow grooves which are uniformly distributed at intervals, interstitial fluid of the brain tissue can flow to be attached to the brain tissue, and the number of effective contact points is guaranteed; a wire of the electrode structure extends into the packaging shell and is connected with the communication module to realize brain signal detection and acquisition; during multi-channel acquisition, the CMOS chip connected with the wire is arranged, the CMOS chip transmits a signal to the communication module through the microstrip line, connection points of the wire of a high channel and a circuit board of the communication module can be reduced, meanwhile, the size of the communication module can be reduced, the size of the intracranial cortex signal acquisition device can be greatly reduced, and high-channel miniaturization processing is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to biomedical engineering technology and MEMS (micro -electromechanical system) technical field, especially relate to a kind of electrode structure, intracranial cortex signal acquisition device, brain wave monitoring system. BACKGROUND

[0002] At present, the weak discharge mode generated by brain surface can reflect its physiological and pathological state. Based on the change of discharge mode, some diseases can be diagnosed and treated, and the ECoG electrode is applied to epilepsy, which is the most widely used field. Accurate analysis of brain discharge change needs effective signal acquisition and processing, which first amplifies weak brain electrical signal and presents on the display for doctors to analyze and diagnose. At present, there are two methods for brain electrical signal acquisition: scalp brain electrical signal acquisition, which is mainly non-invasive and easy to operate, but the signal attenuation is serious, and there are pseudo-differences, which are mainly used for general examination. And ECoG electrode has great potential in epilepsy, spinal cord injury and other applications, especially in high-precision neural information acquisition and complex neural function decoding.

[0003] In the related art, the spatial resolution and signal accuracy of the intracranial cortex brain-computer interface system cannot meet the requirements of future clinical neural interface, the main reasons are as follows:

[0004] (1) When the ECoG electrode channel of the intracranial cortex brain-computer interface system is more, the number of wires is too much and unevenly distributed, which leads to uneven stress distribution, and the flexible ECoG electrode is curled, so that the effective contact point with the brain tissue is reduced, and finally the spatial resolution and signal accuracy are poor.

[0005] (2) The long-term implantation of ECoG electrode blocks the flow of tissue fluid of brain tissue, and due to the influence of intracranial pressure, the ECoG electrode is bent and deformed when the intracranial pressure acts on it, which leads to poor adhesion to the brain tissue, reduces the effective contact point with the brain tissue, and finally the spatial resolution and signal accuracy are poor. SUMMARY

[0006] The utility model embodiment provides a kind of electrode structure, intracranial cortex signal acquisition device, brain wave monitoring system, to solve the problem of long-term implantation of ECoG electrode in related art, which blocks the flow of tissue fluid of brain tissue, and due to the influence of intracranial pressure, the ECoG electrode is bent and deformed, which leads to poor adhesion to the brain tissue, reduces the effective contact point with the brain tissue, and finally the spatial resolution and signal accuracy are poor.

[0007] In a first aspect, an electrode structure is provided, which includes a flexible substrate including an electrode point distribution section and a wire integration section connected together, the electrode point distribution section being provided with a plurality of hollow grooves uniformly spaced apart, and the electrode point distribution section being provided with electrode points arranged in an array on the part other than the hollow grooves.

[0008] The wire integration section is provided with wires corresponding to the electrode points.

[0009] In some embodiments, the hollow grooves include vertical strip-shaped grooves, and the length of each vertical strip-shaped groove is the same.

[0010] The hollow grooves include vertical strip-shaped grooves, and the length of each vertical strip-shaped groove is different.

[0011] The hollow grooves include vertical strip-shaped grooves and horizontal strip-shaped grooves, and one horizontal strip-shaped groove is arranged between two adjacent vertical strip-shaped grooves in the vertical direction.

[0012] The hollow grooves include vertical strip-shaped grooves and horizontal strip-shaped grooves, and one vertical strip-shaped groove is arranged between two adjacent horizontal strip-shaped grooves in the vertical direction.

[0013] The hollow grooves include vertical strip-shaped grooves and horizontal strip-shaped grooves, and the vertical strip-shaped grooves and the horizontal strip-shaped grooves are divided into a first group and a second group; the first group includes a plurality of vertical strip-shaped grooves horizontally spaced apart, and a plurality of horizontal strip-shaped grooves vertically spaced apart are arranged below the vertical strip-shaped grooves; and the second group includes a plurality of vertical strip-shaped grooves horizontally spaced apart, and a plurality of horizontal strip-shaped grooves vertically spaced apart are arranged above the vertical strip-shaped grooves.

[0014] In some embodiments, the hollow grooves include L-shaped grooves; and in the plurality of L-shaped grooves, every two L-shaped grooves are arranged diagonally to form a pair.

[0015] The hollow grooves include a plurality of inclined groove groups, each inclined groove group including three inclined grooves with increasing lengths; the plurality of inclined groove groups are divided into a plurality of array units; and each array unit includes four inclined groove groups arranged in a circular center.

[0016] In some embodiments, the electrode points are arranged in a rectangular array; and the wires corresponding to the electrode points on the wire integration section are all arranged horizontally and converge at the central axis of the wire integration section.

[0017] The electrode points are in a rectangular array distribution, and the wires corresponding to the wire integration section include a first region, a second region, a third region and a fourth region in a cross-shaped distribution; the wires in the first region at the upper left corner of the cross are vertically arranged and converge at the central axis of the wire integration section; the wires in the second region at the upper right corner of the cross are horizontally arranged and converge at the central axis of the wire integration section; the wires in the third region at the lower left corner of the cross are horizontally arranged and converge at the central axis of the wire integration section; and the wires in the fourth region at the lower right corner of the cross are vertically arranged and converge at the central axis of the wire integration section; or,

[0018] The electrode points are in a rectangular array distribution, and the wires corresponding to the wire integration section include a first region, a second region, a third region and a fourth region in a cross-shaped distribution; the wires in the first region at the upper left corner of the cross are vertically arranged and converge at the central axis of the wire integration section; the wires in the second region at the upper right corner of the cross are horizontally arranged and converge at the central axis of the wire integration section; the wires in the third region at the lower left corner of the cross are horizontally arranged and converge at the central axis of the wire integration section; and the wires in the fourth region at the lower right corner of the cross are vertically arranged and converge at the central axis of the wire integration section; or,

[0019] The second aspect provides an intracranial cortex signal acquisition device, which comprises:

[0020] An electrode structure for detecting brain signals;

[0021] A packaging shell in which a communication module is sealed, and a wire integration section in the electrode structure and wires on the wire integration section extend into the packaging shell and are connected to the communication module.

[0022] In some embodiments, the outer side of the packaging shell is provided with at least one skull fixation part, and a skull screw is arranged on the skull fixation part.

[0023] In some embodiments, the communication module is provided with a connection area, and an electrode welding point is arranged on the connection area; the wires are connected to the electrode welding point.

[0024] In some embodiments, the communication module is provided with a connection area, and a CMOS chip is connected to the connection area through a microstrip line; the CMOS chip is connected to the wires.

[0025] In some embodiments, a magnetic shielding sheet is arranged in the packaging shell and above the communication module; a magnetic block is arranged on the inner top wall of the packaging shell, and a wireless power supply coil and a wireless communication antenna are arranged on the magnetic block; the wireless power supply coil and the wireless communication antenna are connected to the communication module.

[0026] The intracranial cortex signal acquisition device further comprises a magnetic suction head magnetically attracted to the magnetic block; the magnetic suction head is located outside the body and is provided with a wireless power supply therein; the wireless power supply is connected to a mobile power supply through a power supply line; and a neck strap is arranged on the mobile power supply.

[0027] The third aspect provides a brain wave monitoring system, which comprises:

[0028] An intracranial cortex signal acquisition device;

[0029] The control device comprises a signal receiving module and a signal analysis module, the signal receiving module is used for receiving the brain signal transmitted by the communication module of the intracranial cortex signal acquisition device, and the signal analysis module is used for analyzing the brain signal.

[0030] The display device is used for displaying the brain signal analyzed by the signal analysis module.

[0031] The beneficial effects brought by the technical scheme provided by the utility model include:

[0032] The utility model discloses an electrode structure, intracranial cortex signal acquisition device, brain wave monitoring system are provided, because flexible base includes the electrode point distribution section and the wire integration section who connects, be equipped with a plurality of even interval distribution's open slot on electrode point distribution section, be equipped with the electrode point of array distribution on the part of open slot on electrode point distribution section except; The wire on wire integration section is equipped with the wire corresponding to the electrode point and is connected, through the even interval distribution's open slot of setting can make the flow of the tissue fluid of brain tissue, reduce the pressure that intracranial pressure generates to it, avoid the deformation, to better adhere to brain tissue, guarantee the number of effective contact point, improve spatial resolution and signal accuracy.

[0033] In addition, the wire of the electrode structure extends into the packaging shell and is connected with the communication module, forming the intracranial cortex signal acquisition device to realize brain signal detection and collection. When the intracranial cortex signal acquisition device needs to collect multiple channels, a CMOS chip connected with the wire of the electrode structure is arranged, the CMOS chip transmits signals to the communication module through a microstrip line, which can reduce the connection points of the high-channel wire and the circuit board of the communication module, and can also reduce the size of the communication module. The volume of the intracranial cortex signal acquisition device can be greatly reduced, and the miniaturization of the high-channel is realized. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creating labor.

[0035] Figure 1 The utility model provides the intracranial cortex signal acquisition device provided by the embodiment of the utility model;

[0036] Figure 2 The utility model provides the intracranial cortex signal acquisition device provided by the embodiment of the utility model hangs on the schematic diagram of human body;

[0037] Figure 3The composition schematic diagram of the brain wave monitoring system provided by the embodiment of the utility model;

[0038] Figure 4 The structure explosion view of the intracranial cortex signal acquisition device of the first structure provided by the embodiment of the utility model;

[0039] Figure 5 The structure explosion view of the intracranial cortex signal acquisition device of the second structure provided by the embodiment of the utility model;

[0040] Figure 6 The schematic diagram of the distribution form one to form three of the hollow groove provided by the embodiment of the utility model;

[0041] Figure 7 The schematic diagram of the distribution form four to form six of the hollow groove provided by the embodiment of the utility model;

[0042] Figure 8 The schematic diagram of the distribution form one of the wire provided by the embodiment of the utility model;

[0043] Figure 9 The schematic diagram of the distribution form two of the wire provided by the embodiment of the utility model;

[0044] Figure 10 The schematic diagram of the distribution form three of the wire provided by the embodiment of the utility model.

[0045] In the figure: 1, flexible base; 100, electrode point distribution section; 101, wire integration section; 102, hollow groove; 1021, vertical strip-shaped groove; 1022, horizontal strip-shaped groove; 1023, L-shaped groove; 1024, inclined groove group; 103, electrode point; 104, wire; 2, packaging shell; 3, communication module; 4, electrode welding point; 5, CMOS chip; 6, microstrip line; 7, magnetic isolation sheet; 8, wireless power supply coil; 9, magnetic suction head; 10, mobile power supply; 11, neck hanging belt; 12, skull fixing part; 13, skull nail; 14, control device; 15, display device. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model more clear, the technical scheme in the embodiment of the utility model will be described clearly and completely below in combination with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, rather than all the embodiments. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the protection scope of the utility model.

[0047] It should be understood for the utility model that:

[0048] The vertical, lateral and central axes mentioned above are based on the following definitions Figure 9 The vertical is denoted by a, the lateral by b, and the central axis by c.

[0049] The flexible substrate 1 material below must be a biocompatible material: including but not limited to polyimide (PI), polydimethylsiloxane (PDMS), polyurethane (PU), polyvinyl alcohol (PVA), parylene C, etc., and its process includes but is not limited to: MEMS thin film deposition process (CVD), spin coating process, casting process, etc.

[0050] The material of the electrode point 103 (deposited on the flexible substrate): including but not limited to metal materials such as platinum (Pt), gold (Au), iridium oxide, and non-metal materials such as graphene, polypyrrole and polyaniline, etc. Conducting polymer, its preparation process includes but is not limited to thin film deposition process (CVD, PVD), spin coating process, stencil casting process, electrochemical deposition process, printing process, etc.

[0051] The material of the encapsulation shell 2 is a biocompatible material, including but not limited to polyether ether ketone (PEEK), nickel-titanium alloy shell, etc. with biocompatible materials.

[0052] The material of the microstrip line 6 must be a biocompatible material: including but not limited to silicon-based materials, polyimide (PI), polydimethylsiloxane (PDMS), polyurethane (PU), polyvinyl alcohol (PVA), parylene C, etc. Insulating materials, its process includes but is not limited to: MEMS thin film deposition process (CVD), spin coating process, casting process, etc.

[0053] In the related art, the spatial resolution and signal accuracy of the intracranial cortical brain-computer interface system cannot meet the requirements of future clinical neural interfaces, the main reasons are:

[0054] (1) When the ECoG electrode channel of the intracranial cortical brain-computer interface system is more, the number of leads is too much and the distribution is uneven, which leads to uneven stress distribution and the existence of curling of the flexible ECoG electrode, which reduces the effective contact points with the brain tissue, and finally the spatial resolution and signal accuracy are poor.

[0055] (2) The long-term implantation of the ECoG electrode blocks the flow of the interstitial fluid of the brain tissue, and due to the influence of the intracranial pressure, when the intracranial pressure acts on the ECoG electrode, the ECoG electrode produces bending deformation, which leads to poor conformability with the brain tissue, reduces the effective contact points with the brain tissue, and finally the spatial resolution and signal accuracy are poor.

[0056] In view of the above problems, the following will be explained step by step.

[0057] The first aspect is to solve the problem that the long-term implantation of the ECoG electrode blocks the flow of the tissue fluid of the brain tissue, the influence of the intracranial pressure in the brain, the bending deformation of the ECoG electrode, the poor conformability on the brain tissue, the reduction of the effective contact points with the brain tissue, and the poor spatial resolution and signal accuracy, and proposes an electrode structure.

[0058] Referring to the accompanying drawings Figure 4 , Figures 6-10 An electrode structure comprises a flexible substrate 1, and the flexible substrate 1 comprises an electrode point distribution section 100 and a wire integration section 101 connected with each other.

[0059] The electrode point distribution section 100 is provided with a plurality of uniformly spaced hollow grooves 102, and the electrode point distribution section 100 is provided with an array of electrode points 103 on the part except the hollow grooves 102.

[0060] The wire integration section 101 is provided with wires 104 corresponding to the electrode points 103.

[0061] The above-mentioned uniformly spaced hollow grooves 102 can make the flow of the tissue fluid of the brain tissue, reduce the pressure generated by the intracranial pressure, avoid deformation, better fit the brain tissue, ensure the number of effective contact points, and improve the spatial resolution and signal accuracy.

[0062] Further, in order to make the hollow grooves 102 uniformly distributed, the flow of the tissue fluid is uniform, and the blocking area is reduced, the following settings are made:

[0063] Referring to the accompanying drawings Figure 6 In form one, the hollow grooves 102 comprise vertical strip grooves 1021, and the length of each vertical strip groove 1021 is the same; that is, the hollow grooves 102 comprise vertical strip grooves 1021; and the plurality of vertical strip grooves 1021 are arranged in a rectangular array.

[0064] Referring to the accompanying drawings, in form two, the hollow grooves 102 comprise vertical strip grooves 1021, and the length of each vertical strip groove 1021 is different; it can be understood that: the hollow grooves 102 comprise vertical strip grooves 1021; the plurality of vertical strip grooves 1021 are divided into a plurality of groups in the horizontal direction, and the vertical strip grooves 1021 in each group are spaced apart in the vertical direction; the gap between the adjacent two vertical strip grooves 1021 in one group and the gap between the adjacent two vertical strip grooves 1021 in another group are staggered.

[0065] Referring to the accompanying drawings Figure 6In the third form, the hollowed-out groove 102 comprises vertical strip-shaped grooves 1021 and horizontal strip-shaped grooves 1022, and one horizontal strip-shaped groove 1022 is arranged between two vertically adjacent vertical strip-shaped grooves 1021; or, the hollowed-out groove 102 comprises vertical strip-shaped grooves 1021 and horizontal strip-shaped grooves 1022, and one vertical strip-shaped groove 1021 is arranged between two horizontally adjacent horizontal strip-shaped grooves 1022; it can be understood that the hollowed-out groove 102 comprises vertical strip-shaped grooves 1021 and horizontal strip-shaped grooves 1022; the vertical strip-shaped grooves 1021 and the horizontal strip-shaped grooves 1022 are divided into a plurality of first groups and second groups; in the horizontal direction, one second group is arranged between two first groups; the first group comprises a plurality of vertically distributed vertical strip-shaped grooves 1021, and one horizontal strip-shaped groove 1022 is arranged between two adjacent vertical strip-shaped grooves 1021; the second group comprises a plurality of vertically distributed horizontal strip-shaped grooves 1022, and one vertical strip-shaped groove 1021 is arranged between two adjacent horizontal strip-shaped grooves 1022.

[0066] Referring to the drawings Figure 7 In the fifth form, the hollowed-out groove 102 comprises vertical strip-shaped grooves 1021 and horizontal strip-shaped grooves 1022, and the vertical strip-shaped grooves 1021 and the horizontal strip-shaped grooves 1022 are divided into first groups and second groups; the first group comprises a plurality of vertically spaced horizontal strip-shaped grooves 1022 arranged in a horizontal direction, and a plurality of vertically spaced vertical strip-shaped grooves 1021 are arranged below the horizontal strip-shaped grooves 1022; the second group comprises a plurality of vertically spaced horizontal strip-shaped grooves 1022 arranged in a horizontal direction, and a plurality of vertically spaced vertical strip-shaped grooves 1021 are arranged above the horizontal strip-shaped grooves 1022.

[0067] Referring to the drawings Figure 7 In the fourth form, the hollowed-out groove 102 comprises L-shaped grooves 1023; in the plurality of L-shaped grooves 1023, every two L-shaped grooves 1023 are arranged diagonally to form a pair.

[0068] Referring to the drawings Figure 7 In the sixth form, the hollowed-out groove 102 comprises a plurality of inclined groove groups 1024, each inclined groove group 1024 comprises three inclined grooves with increasing lengths; the plurality of inclined groove groups 1024 are divided into a plurality of array units; each array comprises four inclined groove groups 1024 arranged in a circular center.

[0069] The above several forms can all achieve the effect of reducing the blocking area, but the above forms of the hollowed-out groove 102 are included but not limited to the above ways.

[0070] In some preferred embodiments, since the rigidity of the lead 104 is greater than that of the electrode point distribution section 100 and the lead integrated section 101, when the lead 104 is unevenly arranged, stress is unevenly applied to the flexible substrate 1, causing the flexible substrate 1 to curl and deform; on the other hand, when the lead 104 acts as a skeleton, the overall requirement is that the electrode structure as a whole meets the flexibility requirement, and when the lead 104 is unevenly arranged or completely concentrated in a certain place, the flexibility effect of the concentrated place is poor, which does not meet the fitting requirement. Referring to Figure 8 , the important part is concentrated at the top, and the local rigidity of the top is too large; therefore, based on the problem of the hollow groove 102, the arrangement of the lead 104 is set as follows:

[0071] The electrode points 103 are arranged in a rectangular array; the leads 104 corresponding to the lead integrated section 101 are all arranged horizontally and converge at the central axis of the lead integrated section 101.

[0072] Referring to Figure 9 , the electrode points 103 are arranged in a rectangular array, and the leads 104 corresponding to the lead integrated section 101 include a first region, a second region, a third region, and a fourth region arranged in a cross shape; the leads 104 in the first region at the upper left corner of the cross shape are arranged vertically and converge at the central axis of the lead integrated section 101; the leads 104 in the second region at the upper right corner of the cross shape are arranged horizontally and converge at the central axis of the lead integrated section 101; the leads 104 in the third region at the lower left corner of the cross shape are arranged horizontally and converge at the central axis of the lead integrated section 101; and the leads 104 in the fourth region at the lower right corner of the cross shape are arranged vertically and converge at the central axis of the lead integrated section 101.

[0073] Referring to Figure 10 , a part of the electrode points 103 are arranged in a rectangular array, and another part are arranged in a circular array; the leads 104 corresponding to the lead integrated section 101 are all arranged horizontally and converge at the central axis of the lead integrated section 101.

[0074] The above arrangement divides the converged points from the top to the central axis, reduces the local rigidity, uniformly disperses the stress, meets the flexibility requirement, and thus ensures effective contact points with the brain tissue, ultimately improving the spatial resolution and signal accuracy.

[0075] In a second aspect, referring to the accompanying Figures 1-5 , an intracranial cortex signal acquisition device is provided, which includes:

[0076] An electrode structure for detecting brain signals;

[0077] The packaging shell 2 is internally sealed with a communication module 3, and the communication module 3 is provided with a communication unit and an ASIC chip or other special chip; the lead integrated section 101 in the electrode structure and the lead 104 on the lead integrated section 101 extend into the packaging shell 2 and are connected with the communication module 3.

[0078] The outer side of the packaging shell 2 is provided with at least one skull fixing part 12, and the skull fixing part 12 is provided with a skull nail 13.

[0079] In use, the intracranial opening is used to make the electrode structure adhere to the brain tissue, and the packaging shell 2 is fixed on the skull through the skull nail 13; the brain signal is detected through the electrode structure, and then the communication module 3 collects and sends the detected brain signal, and since the electrode structure has high adhesion to the brain tissue, the spatial resolution and signal accuracy of the collected brain signal are high.

[0080] In some preferred embodiments, the number of different channels is as follows:

[0081] Reference is made to the accompanying drawings Figure 5 The communication module 3 is provided with a connection area, the connection area is provided with an electrode welding point 4, and the lead 104 is connected with the electrode welding point 4. This scheme is suitable for the case of fewer channels. The connection mode of the lead 104 and the electrode welding point 4 includes but is not limited to reverse welding, reflow welding, silver paste welding, ACF glue hot pressing welding, conductive silicone welding and the like.

[0082] Reference is made to the accompanying drawings Figure 4 When the number of channels is large, the connection points of the communication module 3 and the lead 104 will increase sharply, and in addition, the space of the communication module 3 is limited, so the setting is difficult, and therefore the original electrode welding point 4 is cancelled, a microstrip line 6 is arranged in the connection area, one end of the microstrip line 6 away from the connection area is connected with a CMOS chip 5, and the CMOS chip 5 is connected with the lead 104. Since the CMOS chip 5 can be connected with the lead 104, the brain signal detected by the electrode structure can be preprocessed and then transmitted to the communication module 3 through the microstrip line 6, which can reduce the connection points of the lead 104 of the high channel and the circuit board of the communication module 3, and at the same time, the size of the communication module 3 can be reduced, the volume of the intracranial cortex signal acquisition device can be greatly reduced, and the miniaturization of the high channel is realized; it can also be understood that in this way, the number of welding points arranged on the communication module 3 is avoided, so that other components do not need to be changed, and finally a flexible electrode with tens of thousands of channels is designed, and different brain region neural signal acquisition is realized.

[0083] Reference is made to the accompanying drawings Figure 1 and the accompanying drawings Figure 2 In some preferred embodiments, the above components need to be provided with power supply to operate, but the battery is packaged in the packaging shell 2, and the battery has the problems of difficult replacement and charging, so the following settings are made:

[0084] A magnetic isolation sheet 7 is arranged in the package shell 2 and above the communication module 3. A magnetic block is arranged on the top wall of the package shell 2. A wireless power supply coil 8 and a wireless communication antenna are arranged on the magnetic block. The wireless power supply coil 8 and the wireless communication antenna are connected with the communication module 3.

[0085] The intracranial cortex signal acquisition device further comprises a magnetic suction head 9 which is magnetically attracted to the magnetic block. The magnetic suction head 9 is arranged outside the body and has a wireless power supply device arranged therein. The wireless power supply device is connected with a mobile power supply 10 through a power supply line. The mobile power supply 10 is provided with a neck hanging strap 11.

[0086] The mobile power supply 10 can be a power bank which is hung on the human body through the neck hanging strap 11 for convenient use. In addition, the electric energy of the mobile power supply 10 is wirelessly transmitted to the wireless power supply coil 8 through the wireless power supply device. The wireless power supply coil 8 supplies power to the components connected on the communication module 3, so as to realize the power supply outside the body. In addition, the magnetic suction head 9 and the magnetic block can be arranged to facilitate the docking or alignment of the wireless power supply coil 8 and the wireless power supply device, so as to avoid the position deviation and affect the effect of providing electric energy.

[0087] In a third aspect, with reference to the accompanying drawings: Figure 3 In order to facilitate further processing of the signal, such as filtering, and control output and record channels and perform some preliminary data analysis, such as reading the number of channels, sampling rate, stimulation parameters (such as frequency, intensity, etc.). It is convenient for researchers to set parameters, monitor data, and allow long-term, high-resolution recording of brain cortex electrical activity, while providing flexible control and data processing capabilities, with the following settings:

[0088] A brain wave monitoring system is provided, which comprises:

[0089] An intracranial cortex signal acquisition device;

[0090] A control device 14 comprising a signal receiving module and a signal analysis module. The signal receiving module is used to receive the brain signal transmitted by the communication module of the intracranial cortex signal acquisition device. The signal analysis module is used to analyze the brain signal.

[0091] A display device 15 is used to display the brain signal analyzed by the signal analysis module.

[0092] In the description of the utility model, it is necessary to explain that the position or location relation indicated by the terms "upper", "lower" and the like is the position or location relation based on the drawing shown, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular position, be constructed and operated in a particular position, and therefore cannot be understood as a limitation on the utility model. Unless otherwise expressly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, and can also be detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0093] It should be noted that in the utility model, relational terms such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the element defined by the sentence "including a…" does not exclude the presence of another identical element in the process, method, article or device including the element.

[0094] The above is only a specific embodiment of the utility model, enabling those skilled in the art to understand or implement the utility model. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the utility model. Therefore, the utility model will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features applied herein.

Claims

1. An electrode structure comprising a flexible substrate (1), the flexible substrate (1) comprising an electrode point distribution section (100) and a wire integration section (101) connected together, characterized in that: a plurality of hollow grooves (102) are uniformly and regularly arranged on the electrode point distribution section (100); electrode points (103) are arranged on the electrode point distribution section (100) except for the hollow grooves (102); and wires (104) corresponding to the electrode points (103) are arranged on the wire integration section (101).

2. The electrode structure according to claim 1, characterized in that: the hollow grooves (102) comprise vertical strip grooves (1021), and the lengths of the vertical strip grooves (1021) are the same; or the hollow grooves (102) comprise vertical strip grooves (1021), and the lengths of the vertical strip grooves (1021) are different; or the hollow grooves (102) comprise vertical strip grooves (1021) and horizontal strip grooves (1022), and one horizontal strip groove (1022) is arranged between two adjacent vertical strip grooves (1021) in the vertical direction; or the hollow grooves (102) comprise vertical strip grooves (1021) and horizontal strip grooves (1022), and one vertical strip groove (1021) is arranged between two adjacent horizontal strip grooves (1022) in the vertical direction; or the hollow grooves (102) comprise vertical strip grooves (1021) and horizontal strip grooves (1022), and the vertical strip grooves (1021) and the horizontal strip grooves (1022) are divided into a first group and a second group; the first group comprises a plurality of vertical strip grooves (1021) arranged horizontally and regularly, and a plurality of horizontal strip grooves (1022) arranged vertically and regularly are arranged below the vertical strip grooves (1021); and the second group comprises a plurality of vertical strip grooves (1021) arranged horizontally and regularly, and a plurality of horizontal strip grooves (1022) arranged vertically and regularly are arranged above the vertical strip grooves (1021).

3. The electrode structure according to claim 1, characterized in that: the hollow grooves (102) comprise L-shaped grooves (1023), and every two L-shaped grooves (1023) are arranged diagonally to form a pair; or the hollow grooves (102) comprise a plurality of inclined groove groups (1024), each of which comprises three inclined grooves with increasing lengths; the plurality of inclined groove groups (1024) are divided into a plurality of array units; and each array unit comprises four inclined groove groups (1024) arranged in a circle.

4. The electrode structure according to claim 1, characterized in that: the electrode points (103) are arranged in a rectangular array; the wires (104) corresponding to the electrode points (103) are arranged horizontally on the wire integration section (101) and converge at the central axis of the wire integration section (101); or ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The electrode points (103) are arranged in a rectangular array, and the wires (104) corresponding to the wire integration section (101) include a first region, a second region, a third region, and a fourth region arranged in a cross shape; the wires (104) in the first region at the upper left corner of the cross shape are arranged vertically and converge at the center axis of the wire integration section (101); the wires (104) in the second region at the upper right corner of the cross shape are arranged horizontally and converge at the center axis of the wire integration section (101); the wires (104) in the third region at the lower left corner of the cross shape are arranged horizontally and converge at the center axis of the wire integration section (101); and the wires (104) in the fourth region at the lower right corner of the cross shape are arranged vertically and converge at the center axis of the wire integration section (101); or, The electrode points (103) are arranged in a rectangular array, and the wires (104) corresponding to the wire integration section (101) include a first region, a second region, a third region, and a fourth region arranged in a cross shape; the wires (104) in the first region at the upper left corner of the cross shape are arranged vertically and converge at the center axis of the wire integration section (101); the wires (104) in the second region at the upper right corner of the cross shape are arranged horizontally and converge at the center axis of the wire integration section (101); the wires (104) in the third region at the lower left corner of the cross shape are arranged horizontally and converge at the center axis of the wire integration section (101); and the wires (104) in the fourth region at the lower right corner of the cross shape are arranged vertically and converge at the center axis of the wire integration section (101); or, 5. An intracranial cortical signal acquisition device, comprising: It comprises: The electrode structure of claim 1 is used for detecting brain signals; The packaging shell (2) is provided with a communication module (3) sealed therein, and the wire integration section (101) and the wires (104) on the wire integration section (101) in the electrode structure extend into the packaging shell (2) and are connected with the communication module (3).

6. The intracranial cortical signal acquisition device of claim 5, wherein: At least one skull fixation portion (12) is provided on the outer side of the packaging shell (2), and a skull nail (13) is provided on the skull fixation portion (12).

7. The intracranial cortical signal acquisition device of claim 5, wherein: A connection area is provided on the communication module (3), and an electrode welding point (4) is provided on the connection area; the wires (104) are connected with the electrode welding point (4).

8. The intracranial cortical signal acquisition device of claim 5, wherein: A connection area is provided on the communication module (3), and a CMOS chip (5) is connected with the connection area through a microstrip line (6); the CMOS chip (5) is connected with the wires (104).

9. The intracranial cortical signal acquisition device of claim 5, wherein: A magnetic shielding sheet (7) is provided in the packaging shell (2) and above the communication module (3); a magnetic block is provided on the inner top wall of the packaging shell (2), and a wireless power supply coil (8) and a wireless communication antenna are provided on the magnetic block; the wireless power supply coil (8) and the wireless communication antenna are connected with the communication module (3); The intracranial cortical signal acquisition device further comprises a magnetic suction head (9) magnetically attracted to the magnetic block; the magnetic suction head (9) is located outside the body and is provided with a wireless power supply device therein; the wireless power supply device is connected with a mobile power supply (10) through a power line; and a neck hanging belt (11) is provided on the mobile power supply (10).

10. A brain wave monitoring system characterized by comprising: It comprises: The intracranial cortical signal acquisition device of claim 5, A control device (14) comprises a signal receiving module and a signal analyzing module, the signal receiving module is used for receiving the brain signal transmitted by the communication module of the intracranial cortex signal acquisition device; the signal analyzing module is used for analyzing the brain signal; A display device (15) is used for displaying the brain signal analyzed by the signal analyzing module.

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