Magnetic brain testing device

Abstract

The application relates to the technical field of biomagnetic measurement, in particular to a brain magnetic testing device. The brain magnetic testing device comprises a shielding cabin, a lifting assembly, a helmet assembly and a seat assembly, the shielding cabin is enclosed to form a shielding chamber, the lifting assembly is arranged in the shielding chamber, the helmet assembly is arranged in the shielding chamber and comprises a helmet piece, the helmet piece is connected with the lifting assembly and can be lifted under the driving of the lifting assembly, the seat assembly comprises a base, a chest supporting piece and a head positioning piece, the base is arranged in the shielding chamber, the base comprises a seat part and a supporting mounting part, the seat part is arranged on the shielding cabin and is used for allowing a user to ride, the supporting mounting part is located on one side of the seat part and extends upwards, the chest supporting piece is arranged on one side of the supporting mounting part which faces the seat part, and the head positioning piece is arranged on the upper end of the chest supporting piece in the height direction. The application can reduce the manufacturing cost, reduce the requirement for the installation space and be more conducive to popularization and application.

Description

Technical Field

[0001] This application relates to the field of biomagnetic measurement technology, and in particular to a magnetoencephalography (MEG) testing device. Background Technology

[0002] Magnetoencephalography (MEG) is a non-invasive testing technique that detects brain function by measuring the weak magnetic field generated by neural activity in the brain. Because the intensity of the brain's magnetic field signal is extremely low, it is easily drowned out by the Earth's magnetic field and environmental electromagnetic noise; therefore, its measurement must be performed in a high-performance magnetically shielded space.

[0003] Currently, mainstream magnetoencephalography (MEG) testing devices typically consist of a large magnetically shielded chamber, integrating a fixed testing chair and a helmet assembly. Subjects sit in the chair and extend their heads into the helmet assembly for testing. This structure requires a large testing chair to accommodate subjects of different body types and provide a stable and comfortable seating experience. The helmet assembly includes a movable arm and a helmet, using the arm to move the helmet vertically and horizontally. This allows the helmet to be moved to the subject's head after they are seated, adapting to different body types and postures. To accommodate the fixed testing chair and helmet assembly, the magnetically shielded chamber needs sufficient length, width, and height, resulting in a large volume and significant footprint. This not only necessitates the use of expensive shielding materials, leading to high manufacturing costs, but also imposes stringent requirements on laboratory space and makes overall relocation difficult. Furthermore, the high cost of the MEG testing device hinders its widespread adoption and application in various scenarios. Summary of the Invention

[0004] Therefore, it is necessary to provide a magnetoencephalography (MEG) testing device that can solve the above problems.

[0005] To solve the above-mentioned technical problems, this application provides the following technical solution:

[0006] A magnetoencephalography (MEG) testing device, comprising:

[0007] A shielded chamber is an enclosed space that forms a shielded cavity.

[0008] The lifting assembly is located in the shielded chamber;

[0009] A helmet assembly, disposed in the shielding chamber, includes a helmet component, which is connected to the lifting assembly and can be raised and lowered by the lifting assembly.

[0010] A seat assembly includes a base, a chest support, and a head positioning component. The base is disposed in the shielded chamber and includes a seat portion and a support mounting portion. The seat portion is mounted in the shielded chamber and is used for a user to sit on. The support mounting portion is located on one side of the seat portion and extends upward. The chest support is mounted on the side of the support mounting portion facing the seat portion. The head positioning component is disposed at the upper end of the chest support in the height direction.

[0011] The helmet component is located above the seat.

[0012] Understandably, this application, by setting up a seat assembly including a base, a chest support, and a head positioning component, allows the subject to sit astride the support mounting part of the base. The chest support provides chest support to enhance comfort, and the head positioning component is used to fix the subject's head. In this structure, the subject's sitting posture eliminates the need for a backrest on the base, reducing the space occupied by the seat assembly. By using the head positioning component to position the subject's head, the helmet component only needs to move in the vertical direction, eliminating the need for an additional horizontal movement structure, further reducing space occupation. The chest support provides support to the subject and also improves the subject's sitting comfort. Therefore, the magnetoencephalography (MEG) testing device provided by this application can reduce its size while ensuring the subject's sitting comfort, thereby reducing manufacturing costs and installation space requirements, making it more conducive to promotion and application.

[0013] In one embodiment, the chest support includes a body and support portions. The body is mounted on the side of the support mounting portion facing the seat portion and has two support portions, which are respectively disposed on two opposite sides of the body and located on both sides of the seat portion.

[0014] In one embodiment, the top of the main body is provided with a mounting portion, and the top surface of the mounting portion is provided with a mounting hole. The head positioning member includes a connected mounting section and a support section. The mounting section is at least partially accommodated in the mounting hole, and the peripheral wall of the mounting section is provided with a plurality of mating holes spaced apart along its axial direction. The mounting section is detachably connected to the mounting portion through a mounting member. The mounting member can selectively mate with the mating holes at different height positions so that the support section is fixed at different heights relative to the mounting portion. The support section is used to support the user's chin.

[0015] In one embodiment, the body is configured as a hollow structure and has an installation interface for connecting a magnetocardiogram (MCC) detection module.

[0016] Understandably, by setting up an installation interface, a "plug-and-play" physical basis is provided for future upgrades to integrate magnetocardiography (MCG) testing functions without affecting the current MEG testing functions and performance, making function expansion faster.

[0017] In one embodiment, the base further includes two handles, which are respectively disposed on two opposite sides of the support mounting portion and located on both sides of the seat portion.

[0018] In one embodiment, the lifting assembly includes a fixed base, a column, an operating component, a transmission component, and a lifting component. The fixed base is disposed on the shielded cabin, the column is disposed on the upper end of the fixed base and extends along the height direction, the operating component and the lifting component are disposed on the column, and the lifting component can be raised and lowered relative to the column. One end of the transmission component is connected to the operating component, and the other end is connected to the lifting component, so that when the user operates the operating component, the lifting component can be driven to rise and fall through the transmission component.

[0019] In one embodiment, the operating element is configured as a crank handle; the transmission element includes a meshing bevel gear pair and a vertically arranged lead screw, the lower end of the lead screw being connected to the crank handle through the bevel gear pair, and the upper end of the lead screw being threadedly engaged with the lifting element.

[0020] In one embodiment, the helmet component includes a helmet body, a connector, and an outer cover. The helmet body is connected to the lifting assembly, and the outer cover is rotatably connected to the helmet body via the connector.

[0021] Understandably, by setting up an outer cover, the messy internal wiring of the helmet can be effectively concealed, maintaining a clean and orderly testing site. When the helmet needs to be repaired, rotating the outer cover to expose the internal wiring allows maintenance personnel to easily access the probes and cables inside the helmet for debugging and repair, thereby improving the ease of use and reliability of the equipment.

[0022] In one embodiment, the helmet assembly further includes a locking member disposed on the outer cover for locking the outer cover to the helmet body when the helmet assembly is in use, thereby preventing the outer cover from rotating relative to the helmet body.

[0023] In one embodiment, the seat assembly further includes a seat cushion disposed at the upper end of the seat portion.

[0024] Compared with existing technologies, the magnetoencephalography (MEG) testing device described herein uses a seat assembly comprising a base, a chest support, and a head positioning component. The subject sits astride the support mounting part of the base, the chest support provides chest support to enhance comfort, and the head positioning component secures the subject's head. This straddling posture eliminates the need for a backrest, reducing the space occupied by the seat assembly. The head positioning component positions the subject's head, allowing the helmet to move only vertically, eliminating the need for a separate horizontal movement structure and further reducing space requirements. The chest support also enhances the subject's riding comfort. Therefore, the MEG testing device provided in this application reduces size while ensuring subject riding comfort, lowers manufacturing costs, reduces installation space requirements, and is more conducive to widespread adoption and application. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of the magnetoencephalography (MEG) testing device provided in this application.

[0027] Figure 2 A front view of the magnetoencephalography (MEG) testing device provided in this application.

[0028] Figure 3 This is a schematic diagram of the lifting assembly and helmet assembly of the magnetoencephalography (MEG) testing device provided in this application.

[0029] Figure 4 This is a schematic diagram of the lifting assembly of the magnetoencephalography (MEG) testing device provided in this application.

[0030] Figure 5 A schematic diagram of the connection structure between the lead screw and the helmet body of the magnetoencephalography (MEG) testing device provided in this application.

[0031] Figure 6 A schematic diagram of the seat assembly of the magnetoencephalography (MEG) testing device provided in this application.

[0032] Figure 7 An exploded view of the base of the magnetoencephalography (MEG) testing device provided in this application.

[0033] Figure 8 A cross-sectional view of the seat assembly of the magnetoencephalography (MEG) testing device provided in this application.

[0034] Figure 9For this application Figure 8 A magnified view of point X in the middle.

[0035] The component labels are as follows:

[0036] 100. Magnetic EEG testing device; 10. Shielded chamber; 11. Shielded cavity; 20. Lifting assembly; 21. Fixing base; 22. Column; 23. Operating component; 231. Handle; 24. Transmission component; 241. Bevel gear pair; 242. Lead screw; 25. Lifting component; 30. Helmet assembly; 31. Helmet component; 311. Helmet body; 312. Connecting component; 313. Outer cover; 32. Locking component; 40. Seat assembly Components; 41. Base; 411. Seat; 412. Support and mounting part; 413. Handle; 42. Chest support; 421. Body; 4211. Mounting part; 4212. Mounting hole; 4213. Hollow structure; 4214. Mounting interface; 422. Support part; 43. Head positioning part; 431. Mounting section; 432. Support body section; 433. Mating hole; 434. Mounting part; 44. Seat cushion. Detailed Implementation

[0037] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0038] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0040] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0041] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0042] Please see Figures 1 to 9 This application provides a magnetoencephalography (MEG) testing device 100, which includes: a shielded chamber 10, a lifting assembly 20, a helmet assembly 30, and a seat assembly 40. The shielded chamber 10 encloses a shielded cavity 11; the lifting assembly 20 is disposed in the shielded cavity 11; the helmet assembly 30 is disposed in the shielded cavity 11 and includes a helmet component 31, which is connected to the lifting assembly 20 and can be raised and lowered under the action of the lifting assembly 20; the seat assembly 40 includes a base 41, a chest support 42, and a seat. The head positioning component 43 and the base 41 are disposed in the shielding chamber 11. The base 41 includes a seat part 411 and a support mounting part 412. The seat part 411 is installed in the shielding chamber 10 and is used for the user to sit on. The support mounting part 412 is located on one side of the seat part 411 and extends upward. The chest support component 42 is installed on the side of the support mounting part 412 facing the seat part 411. The head positioning component 43 is disposed at the upper end of the chest support component 42 along the height direction. The helmet component 31 is disposed above the seat part 411.

[0043] In existing technologies, magnetoencephalography (MEG) testing devices 100 typically include a large magnetically shielded chamber, within which a fixed testing chair and a helmet structure are integrated. Subjects sit on the testing chair and extend their heads into the helmet structure for testing. This structure requires a large testing chair to accommodate subjects of different body types and provide a stable and comfortable seating experience. The helmet structure needs to include a movable arm and a helmet, using the movable arm to move the helmet so that it can be adjusted to fit the subject's head position after they are seated. To accommodate the fixed testing chair and helmet structure, the magnetically shielded chamber needs sufficient length, width, and height, resulting in a large volume and significant footprint. This not only necessitates the use of expensive shielding materials, leading to high manufacturing costs, but also imposes stringent requirements on laboratory space and makes overall relocation difficult. Furthermore, the high cost of this type of MEG testing device 100 hinders its widespread adoption and application in various scenarios. This application provides a seat assembly 40 comprising a base 41, a chest support 42, and a head positioning component 43. The subject sits on the support mounting portion 412 of the base 41. The chest support 42 provides chest support to enhance comfort, and the head positioning component 43 secures the subject's head. This seating arrangement eliminates the need for a backrest on the base 41, reducing the space occupied by the seat assembly 40. The head positioning component 43 positions the subject's head, allowing the helmet component 31 to move only vertically, eliminating the need for a horizontal movement structure and further reducing space requirements. The chest support 42 provides support and enhances the subject's seating comfort. Therefore, the magnetoencephalography (MEG) testing device 100 provided by this application can reduce size while ensuring subject seating comfort, lowering manufacturing costs and installation space requirements, making it more suitable for widespread adoption and application.

[0044] like Figures 1 to 5 As shown, the lifting assembly 20 includes a fixed base 21, a column 22, an operating component 23, a transmission component 24, and a lifting component 25. The fixed base 21 is disposed in the shielded chamber 10. The column 22 is disposed at the upper end of the fixed base 21 and extends along the height direction. The operating component 23 and the lifting component 25 are disposed on the column 22, and the lifting component 25 can be raised and lowered relative to the column 22. One end of the transmission component 24 is connected to the operating component 23, and the other end is connected to the lifting component 25, so that when the user operates the operating component 23, the lifting component 25 can be driven to rise and fall through the transmission component 24.

[0045] In one embodiment, the fixing seat 21 is fixed to the base 41, and the column 22 is fixed to the top wall of the shielding chamber 10. The column 22 and the shielding chamber 10 are installed together by non-magnetic fasteners, which can provide stable support for the vertical movement of the lifting component 25 and improve the stability of the lifting assembly 20. Here, the number of non-magnetic fasteners can be configured to be multiple, and the specific non-magnetic fasteners can be titanium alloy threaded fasteners, engineering plastic clips, non-magnetic locks, etc.

[0046] like Figure 4 and Figure 5 As shown, the operating component 23 is configured as a crank handle 231; the transmission component 24 includes a meshing bevel gear pair 241 and a vertically arranged lead screw 242. The lower end of the lead screw 242 is connected to the crank handle 231 through the bevel gear pair 241, and the upper end of the lead screw 242 is threadedly engaged with the lifting component 25.

[0047] In this embodiment, the lead screw 242 is configured as a T-shaped lead screw 242 with a right-handed design, made of PEEK material, with a helix angle less than the equivalent friction angle, possessing a self-locking function, and a designed stroke of 20cm. By cranking the handle 231, the bevel gear pair 241 is rotated, which in turn drives the T-shaped lead screw 242 to rotate, causing the lifting component 25 to rise and fall along the column 22, achieving precise vertical movement of the helmet assembly 30 within a 20cm range. Here, the lifting range of the helmet assembly 30 can also be configured according to user needs; this type of structure is quite common in the prior art and will not be elaborated upon here.

[0048] Furthermore, the lifting assembly 20 also includes a cable fastener (not shown). The cable fastener is used to organize and secure the cable, preventing the helmet assembly 30 and the lifting assembly 25 from pulling or abrading the cable during lifting, thus extending the cable's lifespan. It also prevents the cable from tangling or getting caught in moving parts, ensuring a smooth and reliable lifting process. Here, the cable fastener can be configured as an engineering plastic cable drag chain, a polyethylene spiral wound protective tube, or a non-magnetic cable tie, etc.

[0049] In one embodiment, the lifting component 25 is configured as a cantilever bracket, one end of which is sleeved on the lead screw 242 and can move up and down with the rotation of the lead screw 242. The other end of the cantilever bracket is fixedly connected to the helmet body 311. Here, the cantilever bracket and the helmet body 311 can be connected by multiple non-magnetic screws, non-magnetic bolts, non-magnetic buckles, etc.

[0050] In this embodiment, the cantilever bracket is made of plastic 3D printed structure, which is used to stably install the helmet body 311 and ensure the stability and mechanical performance of the helmet body 311 connected to the column 22 through the connector 312.

[0051] like Figures 1 to 3 and Figure 5As shown, the helmet component 31 includes a helmet body 311, a connector 312, and an outer cover 313. The helmet body 311 is connected to the lifting assembly 20, and the outer cover 313 is rotatably connected to the helmet body 311 via the connector 312. Here, the connector 312 can be configured as a bearing.

[0052] Specifically, the outer cover 313 can rotate relative to the helmet body 311, and the rotation angle is A, 180°≥A≥0°.

[0053] In this embodiment, the helmet body 311 adopts a 64-channel design, with the channel positions arranged according to 10-20 EEG points. It is manufactured using 3D composite plastic printing technology, which gives the helmet body 311 non-magnetic and high-temperature resistant properties, ensuring accurate signal acquisition and stable transmission. The 3D printing process for manufacturing the helmet body 311 can refer to existing technologies and will not be described in detail here.

[0054] In one embodiment, the helmet assembly 30 further includes a locking member 32 disposed on the outer cover 313 for locking the outer cover 313 to the helmet body 311 when the helmet assembly 30 is in use, thereby preventing the outer cover 313 from rotating relative to the helmet body 311. Here, the locking member 32 can be configured as a non-magnetic friction lock, a non-magnetic locking ring, or the like.

[0055] When the magnetoencephalogram (MEG) testing device 100 is being tested, the locking member 32 is in a locked state, and the outer cover 313 covers the side of the helmet body 311 closest to the subject, which can effectively conceal the messy internal wiring, maintain the test site in a clean and orderly manner, and improve the ease of use and reliability of the equipment. When the helmet body 311 needs to be repaired, the locking member 32 can be loosened to allow maintenance personnel to access the probes and cables inside the helmet for debugging and repair.

[0056] like Figure 1 , Figure 6 and Figure 8 As shown, the chest support 42 includes a body 421 and support portions 422. The body 421 is mounted on the side of the support mounting portion 412 facing the seat portion 411 and has two support portions 422. The two support portions 422 are respectively disposed on two opposite sides of the body 421 and are located on both sides of the seat portion 411.

[0057] Furthermore, such as Figure 9The top of the main body 421 is provided with a mounting part 4211, and the top surface of the mounting part 4211 is provided with a mounting hole 4212. The head positioning member 43 includes a connected mounting section 431 and a support section 432. The mounting section 431 is at least partially accommodated in the mounting hole 4212, and the peripheral wall of the mounting section 431 is provided with a plurality of mating holes 433 distributed at intervals along its axial direction. The mounting section 431 is detachably connected to the mounting part 4211 through a mounting member 434. The mounting member 434 can selectively mate with the mating holes 433 at different height positions so that the support section 432 is fixed at different heights relative to the mounting part 4211. The support section 432 is used to support the user's chin.

[0058] In one embodiment, the main body 421 is configured as a hollow structure 4213 and has an installation interface 4214 for connecting the magnetocardiogram (MCC) detection module. Thus, by setting the installation interface 4214, a "plug-and-play" physical basis is provided for future upgrades to integrate the MCC testing function without affecting the current MCC testing function and performance, making functional expansion faster.

[0059] like Figure 6 and Figure 7 As shown, the base 41 also includes two handle portions 413, which are respectively disposed on two opposite sides of the support mounting portion 412 and located on both sides of the seat portion 411. By providing handle portions 413, users can grip the handle portions 413 for a more comfortable riding experience.

[0060] like Figure 1 , Figure 6 and Figure 7 As shown, the seat assembly 40 also includes a seat cushion 44, which is disposed at the upper end of the seat portion 411. Specifically, the seat cushion 44 is made of high-density slow-rebound sponge material with a non-slip and breathable coating on the surface. Thus, by providing the seat cushion 44, the riding comfort of the test subject can be improved.

[0061] In this embodiment, the seat cushion 44 is detachably disposed on the upper end of the seat portion 411. This detachable design facilitates the cleaning or replacement of the seat cushion 44, helping to maintain the hygiene of the equipment.

[0062] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0063] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.

Claims

1. A magnetoencephalography (MEG) testing device, characterized in that, include: The shielding chamber (10) is enclosed to form a shielding cavity (11). A lifting assembly (20) is disposed in the shielded chamber (11); Helmet assembly (30), disposed in the shielding chamber (11), includes helmet component (31), the helmet component (31) is connected to the lifting assembly (20), and can be raised and lowered under the drive of the lifting assembly (20); The seat assembly (40) includes a base (41), a chest support (42), and a head positioning member (43). The base (41) is disposed in the shielding chamber (11), and the base (41) includes a seat part (411) and a support mounting part (412). The seat part (411) is mounted in the shielding chamber (10) and is used for a user to sit on. The support mounting part (412) is located on one side of the seat part (411) and extends upward. The chest support (42) is mounted on the side of the support mounting part (412) facing the seat part (411). The head positioning member (43) is disposed at the upper end of the chest support (42) along the height direction. The helmet component (31) is located above the seat portion (411).

2. The magnetoencephalography (MEG) testing device according to claim 1, characterized in that, The chest support (42) includes a body (421) and support portions (422). The body (421) is mounted on the side of the support mounting portion (412) facing the seat portion (411) and has two support portions (422). The two support portions (422) are respectively disposed on two opposite sides of the body (421) and located on both sides of the seat portion (411).

3. The magnetoencephalography (MEG) testing device according to claim 2, characterized in that, The top of the main body (421) is provided with a mounting part (4211), and the top surface of the mounting part (4211) is provided with a mounting hole (4212). The head positioning member (43) includes a connected mounting section (431) and a support section (432). The mounting section (431) is at least partially accommodated in the mounting hole (4212), and the peripheral wall of the mounting section (431) is provided with a plurality of mating holes (433) spaced apart along its axial direction. The mounting section (431) is detachably connected to the mounting part (4211) through a mounting member (434). The mounting member (434) can selectively mate with the mating holes (433) at different height positions so that the support section (432) is fixed at different heights relative to the mounting part (4211). The support section (432) is used to support the user's chin.

4. The magnetoencephalography (MEG) testing device according to claim 2, characterized in that, The main body (421) is configured as a hollow structure (4213) and is provided with an installation interface (4214), which is used to connect the magnetocardiogram detection module.

5. The magnetoencephalography (MEG) testing device according to claim 1, characterized in that, The base (41) also includes two handles (413), which are respectively disposed on two opposite sides of the support mounting part (412) and located on both sides of the seat part (411).

6. The magnetoencephalography (MEG) testing device according to claim 1, characterized in that, The lifting assembly (20) includes a fixed base (21), a column (22), an operating component (23), a transmission component (24), and a lifting component (25). The fixed base (21) is located in the shielded cabin (10). The column (22) is located at the upper end of the fixed base (21) and extends along the height direction. The operating component (23) and the lifting component (25) are located on the column (22), and the lifting component (25) can be raised and lowered relative to the column (22). One end of the transmission component (24) is connected to the operating component (23), and the other end is connected to the lifting component (25), so that when the user operates the operating component (23), the lifting component (25) can be driven to rise and fall through the transmission component (24).

7. The magnetoencephalography (MEG) testing device according to claim 6, characterized in that, The operating component (23) is configured as a rocker arm (231); the transmission component (24) includes a meshing bevel gear pair (241) and a vertically arranged lead screw (242), the lower end of the lead screw (242) is connected to the rocker arm (231) through the bevel gear pair (241), and the upper end of the lead screw (242) is threadedly engaged with the lifting component (25).

8. The magnetoencephalography (MEG) testing device according to claim 1, characterized in that, The helmet component (31) includes a helmet body (311), a connector (312), and an outer cover (313). The helmet body (311) is connected to the lifting assembly (20), and the outer cover (313) is rotatably connected to the helmet body (311) through the connector (312).

9. The magnetoencephalography (MEG) testing device according to claim 8, characterized in that, The helmet assembly (30) also includes a locking member (32) disposed on the outer cover (313) for locking the outer cover (313) and the helmet body (311) when the helmet assembly (30) is in use, so as to prevent the outer cover (313) from rotating relative to the helmet body (311).

10. The magnetoencephalography (MEG) testing device according to claim 1, characterized in that, The seat assembly (40) also includes a seat cushion (44) disposed at the upper end of the seat portion (411).

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