Intracranial electrical signal acquisition device

Abstract

The utility model discloses an intracranial electric signal acquisition device. The intracranial electric signal acquisition device comprises: a summary component, the summary component comprises a support piece and a communication module, the communication module is installed to the support piece, and a plurality of branch components are connected to the periphery of the support piece. Each branch component comprises an electrode sleeve, a plurality of electrode units, at least one pressure sensor and a plurality of transmission lines. The plurality of electrode units are arranged on the outer surface of the electrode sleeve in the extension direction of the electrode sleeve. The pressure sensor is located on the outer peripheral surface of the electrode sleeve. The transmission lines are used to electrically connect the corresponding electrode units or the corresponding pressure sensor with the communication module. According to the above-mentioned intracranial electric signal acquisition device, the communication module is connected with the external terminal equipment in communication through the cable. The intracranial electric signal acquisition device can improve the universality of the acquisition position in single electroencephalogram signal acquisition work and ensure the high-quality acquisition of the electroencephalogram signal.

Description

Technical Field

[0001] This utility model relates to the field of medical testing devices, and in particular to an intracranial electrical signal acquisition device. Background Technology

[0002] Stereo-electroencephalography (SEEG) is a widely used method for recording brain electrical signals using electrodes implanted deep in the brain, specifically for identifying lesions in drug-resistant epilepsy. SEEG technology uses three-dimensional localization to create a three-dimensional model of the brain, capturing brain electrical signals in real time to accurately locate lesions. SEEG technology requires the use of intracranial electrical signal acquisition devices (i.e., intracranial electrodes) to collect brain electrical signals.

[0003] Currently, intracranial electroencephalogram (EEG) acquisition devices are single, long strip structures, consisting of a single electrode cannula and multiple electrodes distributed on that single electrode cannula. After the intracranial EEG acquisition device is implanted in the brain, it can only acquire EEG signals from a few locations in a single direction, resulting in a limited acquisition location during a single EEG signal acquisition operation. Utility Model Content

[0004] This invention provides an intracranial electrical signal acquisition device that can improve the breadth of acquisition locations during a single EEG signal acquisition operation.

[0005] This utility model provides an intracranial electrical signal acquisition device, comprising: a collection component, the collection component including a support member and a communication module, the communication module being installed on the support member; and multiple branch components connected around the support member, each branch component including an electrode sleeve, multiple electrode units, at least one pressure sensor, and multiple transmission lines, the multiple electrode units being arranged at intervals along the extension direction of the electrode sleeve on the outer surface of the electrode sleeve, the pressure sensor being located on the outer peripheral surface of the electrode sleeve, and the transmission lines being used to electrically connect the corresponding electrode unit or the corresponding pressure sensor to the communication module.

[0006] According to the foregoing embodiments of the present invention, each of the pressure sensors is disposed around the outer periphery of the electrode sleeve.

[0007] According to any of the foregoing embodiments of the present invention, at least one of the pressure sensors is located at the end of the electrode sleeve away from the support.

[0008] According to any of the foregoing embodiments of the present invention, the support member includes a first sub-support member and a second sub-support member, the plurality of branch components are connected around the first sub-support member, the communication module includes a communication interface located on the surface of the second sub-support member, and the first sub-support member and the second sub-support member are rotatably connected and configured to have rotational damping.

[0009] According to any of the foregoing embodiments of the present invention, the summing component further includes a limiting member, which is used to limit the rotational movement between the first sub-support member and the second sub-support member.

[0010] According to any of the foregoing embodiments of the present invention, the first sub-support member is provided with a plurality of limiting grooves arranged circumferentially, and the limiting member can engage with the limiting grooves.

[0011] According to any of the foregoing embodiments of the present invention, the communication module is a wireless communication module, the aggregation component further includes a power supply component, the communication module and the power supply component are located within the support component, and the power supply component is electrically connected to the communication module.

[0012] According to any of the foregoing embodiments of the present invention, at least one of the branch components extends in a curved shape.

[0013] According to any of the foregoing embodiments of the present invention, the electrode sleeve has a channel inside, and at least a portion of each of the transmission lines extends into the channel.

[0014] According to any of the foregoing embodiments of the present invention, the plurality of electrode units of each branch component includes a macro electrode unit and a micro electrode unit, the macro electrode unit and the micro electrode unit being spaced apart and alternately arranged along the extension direction of the electrode sleeve, each macro electrode unit including a macro electrode sleeved on the electrode sleeve, and each micro electrode unit including at least one micro electrode located on the outer peripheral surface of the electrode sleeve; the transmission line includes a first transmission line, a second transmission line and a third transmission line, the first transmission line electrically connecting the corresponding macro electrode to the communication module, the second transmission line electrically connecting the corresponding micro electrode to the communication module, and the third transmission line electrically connecting the corresponding pressure sensor to the communication module.

[0015] The intracranial electrical signal acquisition device according to an embodiment of the present invention includes a summarizing component and multiple branch components, a support for the summarizing component, and a communication module. The multiple branch components are distributed around the support. When the intracranial electrical signal acquisition device is implanted into the cranium, the multiple branch components can extend to different positions in different directions. At least one branch component extends in a curved shape, making it easier for the branch component to extend into the cranium from the curved surface of the skull, thus improving the convenience of implantation. Each branch component includes an electrode sheath, multiple electrode units, at least one pressure sensor, and multiple transmission lines. The transmission lines are used to electrically connect the corresponding electrode unit or the corresponding pressure sensor to the communication module, which can communicate with an external terminal device. In the working state, the electroencephalogram (EEG) signals generated by neurons in the brain are acquired through the electrode units. The EEG signals are transmitted through the transmission lines and the communication module, enabling the EEG signals to be transmitted to an external terminal device for reading and storage, thereby achieving the acquisition of EEG signals. When an intracranial electroencephalogram (EEG) signal acquisition device is implanted in the cranium, multiple branch components can extend to different locations in different directions, thereby improving the breadth of acquisition locations in a single EEG signal acquisition operation. In related technologies, the tightness of contact between the electrode units on the branch components and the corresponding brain tissue during implantation affects the quality of EEG signal acquisition. In this embodiment of the invention, the branch component is equipped with at least one pressure sensor. This pressure sensor can provide real-time contact pressure values ​​between at least one location of the branch component and the brain tissue when the intracranial EEG signal acquisition device is implanted. Indicating these contact pressure values, the branch component can be implanted to achieve appropriate contact pressure between the electrode units and the brain tissue, thus ensuring high-quality acquisition of EEG signals. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of the intracranial electrical signal acquisition device of this utility model;

[0018] Figure 2 This is a cross-sectional schematic diagram of a branch component in one embodiment of the intracranial electrical signal acquisition device of this utility model;

[0019] Figure 3 This is a schematic diagram of the overall components in one embodiment of the intracranial electrical signal acquisition device of this utility model;

[0020] Figure 4 This is a schematic diagram of the branch component in one embodiment of the intracranial electrical signal acquisition device of this utility model;

[0021] Figure 5 This is a schematic diagram of an alternative embodiment of the intracranial electrical signal acquisition device of this utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 100 - Summary component; 110 - Communication module; 150 - Support component; 151 - First sub-support component; 1511 - Limiting groove; 152 - Second sub-support component; 140 - Limiting component;

[0024] 200 - Branch assembly; 210 - Electrode sleeve; 211 - Channel; 220 - Electrode unit; 220a - Macro electrode unit; 221a - Macro electrode; 220b - Micro electrode unit; 221b - Micro electrode; 230 - Transmission line; 240 - Pressure sensor;

[0025] G1 - Grouping Unit.

[0026] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] It should be noted that all directional indicators in this utility model embodiment, such as up, down, left, right, front, back, etc., are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indicator will also change accordingly.

[0029] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0030] Figure 1 This is a schematic diagram of an embodiment of the intracranial electrical signal acquisition device of this utility model. The intracranial electrical signal acquisition device is also known as an intracranial electrode. The intracranial electrical signal acquisition device includes a summing component 100 and multiple branch components 200. The summing component 100 includes a support member 150 and a communication module 110. The communication module 110 is mounted on the support member 150. The multiple branch components 200 are connected around the support member 150.

[0031] Figure 2 , Figure 3 These are schematic diagrams of the structure and cross-section of a branch assembly in one embodiment of the intracranial electrical signal acquisition device of this utility model. Each branch assembly 200 includes an electrode sleeve 210, multiple electrode units 220, at least one pressure sensor 240, and multiple transmission lines 230. The multiple electrode units 220 are arranged at intervals along the extension direction of the electrode sleeve 210 on the outer surface of the electrode sleeve 210. The pressure sensor 240 is located on the outer peripheral surface of the electrode sleeve 210. The transmission lines 230 are used to electrically connect the corresponding electrode unit 220 or the corresponding pressure sensor 240 to the communication module 110.

[0032] The intracranial electrical signal acquisition device according to an embodiment of the present invention includes a summarizing component 100 and multiple branch components 200. The summarizing component 100 includes a support member 150 and a communication module 110, and the multiple branch components 200 are distributed around the support member 150. When the intracranial electrical signal acquisition device is implanted in the cranium, the multiple branch components 200 can extend to different positions in different directions. At least one branch component 200 extends in a curved shape, which makes it easier for the branch component 200 to extend into the cranium from the curved surface of the skull, improving the convenience of implantation of the intracranial electrical signal acquisition device. Each branch component 200 includes an electrode sheath 210, multiple electrode units 220, and multiple transmission lines 230. The transmission lines 230 are used to electrically connect the corresponding electrode unit 220 to the communication module 110, and the communication module 110 can communicate with external terminal devices. In operation, electroencephalogram (EEG) signals generated by neurons in the brain are acquired through electrode units 220. These signals are then transmitted via transmission line 230 and communication module 110 to an external terminal device for reading and storage, thus enabling EEG signal acquisition. When the intracranial EEG signal acquisition device is implanted in the cranium, multiple branch components 200 can extend to different locations in different directions, thereby increasing the breadth of acquisition locations during a single EEG signal acquisition session. In related technologies, the tightness of contact between the electrode units 220 on the branch components 200 and the corresponding brain tissue during implantation affects the quality of EEG signal acquisition. In this embodiment of the present invention, the branch component 200 is provided with at least one pressure sensor 240. The pressure sensor 240 can provide in real time the contact pressure value between the branch component 200 and the brain tissue at at least one location when the intracranial electrical signal acquisition device is implanted into the cranium. Under the indication of the contact pressure value, the branch component 200 is easily implanted to ensure that there is a suitable contact pressure between the electrode unit 220 and the brain tissue, thereby ensuring high-quality acquisition of EEG signals.

[0033] The number of branch components 200 can be three, four, five, or other numbers, such as eight, nine, ten, etc. The number of electrode units 220 in each branch component 200 can be two, four, six, eight, nine, sixteen, etc.

[0034] like Figure 1 In some embodiments, the multiple branch components 200 are divided into multiple grouping units G1, each grouping unit G1 including at least two branch components 200, and the multiple grouping units G1 are distributed at intervals around the summarizing component 100, wherein, in the circumferential direction of the summarizing component 100, the spacing between adjacent grouping units G1 is greater than the spacing between adjacent branch components 200 within the grouping unit G1.

[0035] like Figure 1 In one example, the multiple branch components 200 are divided into four grouping units G1, each grouping unit G1 including two branch components 200, and the four grouping units G1 are distributed at intervals around the summing component 100. In some embodiments, the multiple grouping units G1 in each grouping unit G1 are arranged symmetrically. In other embodiments, the grouping units G1 included in the multiple branch components 200 are not limited to the example above.

[0036] In some embodiments, at least one branch component 200 extends in a curved shape. In some embodiments, the electrode sleeve 210 of each branch component 200 extends in a curved shape.

[0037] like Figure 2 In some embodiments, each pressure sensor 240 is disposed around the outer periphery of the electrode sleeve 210. That is, the pressure sensor 240 is an annular structure surrounding the electrode sleeve 210, so that the pressure sensor 240 can sense the contact pressure in all circumferential directions, thereby facilitating the acquisition of the accurate contact pressure value of the branch assembly 200 at that location.

[0038] like Figure 2 In some embodiments, at least one pressure sensor 240 is located at the end of the electrode sleeve 210 remote from the support 150. In one example, each branch assembly 200 includes one pressure sensor 240 located at the end of the electrode sleeve 210 remote from the support 150. In other embodiments, each branch assembly 200 may include a different number of pressure sensors 240. By providing pressure sensors 240 at the end of the electrode sleeve 210 remote from the support 150, contact pressure at the end of the branch assembly 200 remote from the support 150 can be detected, facilitating the assessment of contact pressure at the plurality of electrode units 220 on the branch assembly 200.

[0039] The electrode sleeve 210 is an insulating component. The electrode sleeve 210 can be made of one or more polymers selected from silicone, thermoplastic polyurethane elastomer (TPU), polytetrafluoroethylene (PTFE), polyether block polyamide (PEBAX), polyimide (PI), nylon, rubber, polyvinyl chloride (PVC), or other non-conductive polymer materials.

[0040] like Figure 3 In some embodiments, the electrode sleeve 210 has a channel 211 inside, and at least a portion of each transmission line 230 extends into the channel 211.

[0041] In some embodiments, the electrode sleeve 210 has a hollow structure, thereby forming a channel 211 inside.

[0042] like Figure 2 In some embodiments, each branch assembly 200 includes multiple electrode units 220, each comprising a macroelectrode unit 220a and a microelectrode unit 220b, the macroelectrode units 220a and microelectrode units 220b being spaced apart and alternately arranged along the extension direction of the electrode sleeve 210. In some embodiments, each macroelectrode unit 220a includes a macroelectrode 221a sleeved on the electrode sleeve 210, and each microelectrode unit 220b includes at least one microelectrode 221b located on the outer peripheral surface of the electrode sleeve 210.

[0043] The surface area of ​​the microelectrode 221b is smaller than the surface area of ​​the macroelectrode 221a. In some embodiments, the surface area of ​​each macroelectrode 221a is less than or equal to 20 square millimeters. In some embodiments, the surface area of ​​each microelectrode 221b is less than or equal to 10,000 square micrometers.

[0044] Each branch component 200 comprises multiple electrode units 220, including macroelectrode units 220a and microelectrode units 220b, which are spaced apart and alternately arranged along the extension direction of the electrode sleeve 210. When the intracranial electrical signal acquisition device is used for intracranial electrical signal acquisition, the microelectrodes 221b included in the microelectrode unit 220b, due to their small size, can greatly reduce the influence of irrelevant low-frequency signals in the collection of electroencephalogram (EEG) signals, thus achieving a higher signal-to-noise ratio. Specifically, abnormal signals, such as abnormal potential transmission at lesion sites, often contain some high-frequency signals. Compared to the macroelectrode 221a, the microelectrode 221b has a smaller contact area with brain tissue, thus further reducing signal interference from irrelevant signals such as electromyography (EMG) signals. The microelectrode 221b, in conjunction with the macroelectrode 221a, can more accurately acquire abnormal electrical signals, facilitating subsequent analysis of lesion sites or neuroscientific research analysis.

[0045] In some embodiments, the transmission line 230 includes a first transmission line, a second transmission line, and a third transmission line. The first transmission line electrically connects the corresponding macro electrode 221a to the communication module 110, the second transmission line electrically connects the corresponding micro electrode 221b to the communication module 110, and the third transmission line electrically connects the corresponding pressure sensor 240 to the communication module 110.

[0046] In some embodiments, the microelectrode 221b and the transmission line 230 may each include one or more materials selected from gold, silver, platinum, iridium, MP35N, tantalum, or other non-magnetic conductive metals.

[0047] In some embodiments, each microelectrode unit 220b includes a single microelectrode 221b.

[0048] In some embodiments, each microelectrode unit 220b includes two or more microelectrodes 221b arranged circumferentially along the electrode sleeve 210. For example, each microelectrode unit 220b includes three microelectrodes 221b. In other embodiments, each microelectrode unit 220b may include two, four, five, or other numbers of microelectrodes 221b.

[0049] Figure 4 This is a schematic diagram of the overall components in one embodiment of the intracranial electrical signal acquisition device of this utility model. In this embodiment, the support member 150 includes a first sub-support member 151 and a second sub-support member 152. Multiple branch components 200 are connected around the first sub-support member 151. The communication module 110 includes a communication interface located on the surface of the second sub-support member 152. The first sub-support member 151 and the second sub-support member 152 are rotatably connected and configured to have rotational damping. In this embodiment, the communication module 110 is, for example, a wired communication module, and the communication interface can communicate with an external terminal device via a cable.

[0050] In the above embodiment, after the multiple branch components 200 of the intracranial electrical signal acquisition device are implanted into the cranium, the second sub-support 152 is at least partially exposed outside the scalp. The communication module 110 is connected to an external terminal device via a cable. Because the first sub-support 151 and the second sub-support 152 are rotatably connected, the multiple branch components can rotate relative to the second sub-support 152 with the first sub-support 151. This facilitates adjustment of the orientation of the cables connected to the second sub-support 152 after the multiple branch components of the intracranial electrical signal acquisition device are implanted into the cranium, reducing the pulling force of the cables on the intracranial electrical signal acquisition device.

[0051] like Figure 4 In some embodiments, the summing component 100 further includes a limiting member 140, which limits the rotational movement between the first sub-support member 151 and the second sub-support member 152.

[0052] In one example, the first sub-support 151 is provided with a plurality of limiting grooves 1511 arranged circumferentially, and the limiting member 140 can engage with the limiting grooves 1511 to limit the rotational movement between the first sub-support 151 and the second sub-support 152. By limiting the rotational movement between the first sub-support 151 and the second sub-support 152 by the limiting member 140, the stability of the intracranial electrical signal acquisition device can be maintained after installation.

[0053] In the above embodiments, the communication module 110 is a wired communication module. In other embodiments, the communication module 110 is not limited to a wired communication module, but may also be a wireless communication module.

[0054] Figure 5 This is a schematic diagram of an alternative embodiment of the intracranial electrical signal acquisition device of the present invention. The intracranial electrical signal acquisition device includes a summarizing component 100 and multiple branch components 200. The summarizing component 100 includes a support member 150 and a communication module 110. The communication module 110 is mounted on the support member 150. The multiple branch components 200 are connected around the support member 150. Each branch component 200 includes an electrode sleeve 210, multiple electrode units 220, and multiple transmission lines 230. The multiple electrode units 220 of each branch component 200 include macro electrode units 220a and micro electrode units 220b, which are spaced apart and alternately arranged along the extension direction of the electrode sleeve 210. The transmission lines 230 are used to electrically connect the corresponding electrode units 220 to the communication module 110.

[0055] In an alternative embodiment, communication module 110 is a wireless communication module. In some embodiments, the aggregation component 100 may further include a power supply component 160, with communication module 110 and power supply component 160 located within support component 150, and power supply component 160 electrically connected to communication module. When communication module 110 is a wireless communication module, the wireless communication module may be a known wireless communication module; in one example, the wireless communication module is a Bluetooth wireless communication module.

[0056] The intracranial electrical signal acquisition device according to an embodiment of the present invention includes a summarizing component 100 and multiple branch components 200, which are distributed around the summarizing component 100. When the intracranial electrical signal acquisition device is implanted in the cranium, the multiple branch components 200 can extend to different positions in different directions. This improves the breadth of acquisition locations during a single EEG signal acquisition operation.

[0057] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the concept of the present utility model and using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present utility model.

Claims

1. A device for acquiring intracranial electrical signals, characterized in that, include: A consolidation component, comprising a support member and a communication module, wherein the communication module is mounted on the support member; as well as Multiple branch components are connected around the support member. Each branch component includes an electrode sleeve, multiple electrode units, at least one pressure sensor, and multiple transmission lines. The multiple electrode units are arranged at intervals on the outer surface of the electrode sleeve along the extension direction of the electrode sleeve. The pressure sensor is located on the outer peripheral surface of the electrode sleeve. The transmission lines are used to electrically connect the corresponding electrode unit or the corresponding pressure sensor to the communication module.

2. The intracranial electrical signal acquisition device as described in claim 1, characterized in that, Each of the pressure sensors is arranged around the outer periphery of the electrode sleeve.

3. The intracranial electrical signal acquisition device as described in claim 1, characterized in that, At least one of the pressure sensors is located at the end of the electrode sleeve away from the support.

4. The intracranial electrical signal acquisition device as described in claim 1, characterized in that, The support includes a first sub-support and a second sub-support. The plurality of branch components are connected around the first sub-support. The communication module includes a communication interface located on the surface of the second sub-support. The first sub-support and the second sub-support are rotatably connected and configured to have rotational damping.

5. The intracranial electrical signal acquisition device as described in claim 4, characterized in that, The aggregation component also includes a limiting member, which is used to limit the rotational movement between the first sub-support member and the second sub-support member.

6. The intracranial electrical signal acquisition device as described in claim 5, characterized in that, The first sub-support member is provided with a plurality of limiting grooves arranged circumferentially, and the limiting member can engage with the limiting grooves.

7. The intracranial electrical signal acquisition device as described in claim 1, characterized in that, The communication module is a wireless communication module, and the aggregation component also includes a power supply component. The communication module and the power supply component are located inside the support component, and the power supply component is electrically connected to the communication module.

8. The intracranial electrical signal acquisition device as described in claim 1, characterized in that, At least one of the branch components extends in a curved shape.

9. The intracranial electrical signal acquisition device as described in claim 1, characterized in that, The electrode sleeve has a channel inside, and at least a portion of each of the transmission lines extends into the channel.

10. The intracranial electrical signal acquisition device as described in claim 1, characterized in that, Each of the branch components comprises a plurality of electrode units including macro electrode units and micro electrode units, the macro electrode units and the micro electrode units being spaced apart and alternately arranged along the extension direction of the electrode sleeve, each macro electrode unit including a macro electrode sleeved on the electrode sleeve, and each micro electrode unit including at least one micro electrode located on the outer peripheral surface of the electrode sleeve. The transmission line includes a first transmission line, a second transmission line, and a third transmission line. The first transmission line electrically connects the corresponding macro electrode to the communication module, the second transmission line electrically connects the corresponding micro electrode to the communication module, and the third transmission line electrically connects the corresponding pressure sensor to the communication module.

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