Transcranial magnetic coil and device with same

Abstract

The utility model relates to a transcranial magnetic coil device which comprises a plurality of conductive electrode discs, the electrode discs are of plate-shaped and annular structures, insulating parts are arranged in the circumferential directions of the electrode discs, the surfaces, opposite to the insulating parts, of the electrode discs are coated with insulating coatings, the ends, adjacent to the insulating parts, of the electrode discs serve as input ends, and the other ends of the electrode discs serve as output ends; the multiple electrode discs are arranged in a stacked mode, the output end of the upper electrode disc is electrically connected with the input end of the lower electrode disc to form a closed power-on loop, the input end of the uppermost electrode disc is used for being connected with the positive electrode of a power source, and the output end of the lowermost electrode disc is used for being connected with the negative electrode of the power source. A unique structural design of C-shaped electrode disc stacking is adopted, the discs are sequentially stacked in a staggered mode, a spiral conductive channel is formed in a pressed state, the whole structure is simple, the heat dissipation efficiency is high, the focusing performance is good, the electrode discs can be produced in a full-machining mode, the manufacturing mode is simple, the size is stable, and the quality is reliable.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a transcranial magnetic coil and a device having the same. Background Art

[0002] Transcranial Magnetic Stimulation (TMS) is a non-invasive biostimulation technology. During treatment or research, a stimulation coil is placed on the patient's head with the center aligned with the treatment area. High-voltage pulses are applied to the coil, causing it to generate a magnetic field. The magnetic field passes through the skin and skull, generating an induced current in the brain's neural tissue, changing the threshold and membrane potential of intracranial nerve cells, thereby regulating neural metabolism and electrophysiological activity.

[0003] Currently known magnetic stimulation coils are generally made of an upper shell and a lower shell that wrap around the stimulation coil. Three types of coil materials are known: flat enameled wire, Litz wire, and copper tube. Stimulation coils made of flat enameled wire have too little contact with air or coolant, resulting in poor heat dissipation in high-intensity environments due to insufficient heat exchange. Stimulation coils made of Litz wire have poor insulation, generate a lot of heat, and have a short lifespan. Over long-term use, the excessive heat can easily damage the insulation layer, leading to internal arcing and potentially posing a safety risk to the user. Stimulation coils made of copper tubes are more difficult to manufacture, with large gaps between the coil windings. The wound coil has a large diameter, and the generated magnetic field tends to diverge easily, resulting in poor stimulation energy focusing capabilities. Therefore, designing a magnetic stimulation coil that is simple to manufacture, has excellent heat dissipation, and has good focusing properties is a pressing issue. Utility Model Content

[0004] In view of this, the present application proposes a transcranial magnetic coil device with a simple structure, high heat dissipation efficiency and good focusing.

[0005] According to one aspect of the present application, there is provided a transcranial magnetic coil, comprising: a plurality of conductive electrode disks;

[0006] The electrode disc is a plate-shaped, annular structure, with an insulating portion provided along the circumferential direction of the electrode disc, and an insulating coating is applied to the surface of the electrode disc opposite to the insulating portion. One end of the electrode disc adjacent to the insulating portion is the input end, and the other end is the output end.

[0007] Multiple electrode disks are stacked, and the output end of the upper electrode disk is electrically connected to the input end of the lower electrode disk to form a closed power-on circuit. The input end of the uppermost electrode disk is suitable for connecting to the positive pole of the power supply, and the output end of the lowermost electrode disk is suitable for connecting to the negative pole of the power supply.

[0008] In one possible implementation, the energized loop has a spiral structure.

[0009] In one possible implementation, the plurality of electrode disks are coaxially arranged.

[0010] In one possible implementation, the device further includes: a positive electrode disc and a negative electrode disc;

[0011] The positive electrode disc is a plate-shaped, annular structure with a notch provided along a circumferential direction perpendicular to the positive electrode disc, and the middle surface of the positive electrode disc is coated with an insulating coating, one end of the positive electrode disc is a positive electrode input end, and the other end is a positive electrode output end;

[0012] The negative electrode disc is a plate-shaped, annular structure with a notch provided along a circumferential direction perpendicular to the negative electrode disc, and the middle surface of the negative electrode disc is coated with an insulating coating. One end of the negative electrode disc is a negative electrode input terminal, and the other end is a negative electrode output terminal. The negative electrode input terminal is suitable for electrically connecting to the negative electrode of the power supply;

[0013] The positive electrode disc is arranged on the top of the plurality of electrode discs, the positive electrode input end is suitable for electrically connecting to the positive pole of the power supply, and the positive electrode output end is abutted against the input end of the upper electrode disc; the negative electrode disc is arranged at the bottom of the plurality of electrode discs, the negative electrode input end is abutted against the output end of the lower electrode disc, and the negative electrode output end is suitable for electrically connecting to the negative pole of the power supply.

[0014] In one possible implementation, the surfaces of the positive disc, the electrode disc, and the negative disc are all provided with heat dissipation holes, and the heat dissipation holes provided on the positive disc, the electrode disc, and the negative disc are sequentially connected.

[0015] In a possible implementation, there are multiple heat dissipation holes, which are spaced apart along the circumferential direction of the electrode disk.

[0016] In a possible implementation, the inner diameter and outer diameter of the plurality of annular electrode discs are equal.

[0017] In a possible implementation, the plurality of electrode discs are staggered and stacked, and the ends of the plurality of electrode discs are abutted in sequence.

[0018] A device, characterized by comprising: a housing and a transcranial magnetic coil;

[0019] The shell is a hollow annular structure, covering the outside of the transcranial magnetic coil;

[0020] The shell is provided with a positive input hole and a negative output hole. The positive input hole corresponds to the positive input end of the positive disc, and the negative output hole corresponds to the negative output end of the negative disc.

[0021] In one possible implementation, a fixing groove extends from the inner side of the positive electrode disc, wherein the cross-section of the fixing groove is a concave-shaped structure, and there are two or more fixing grooves, which are spaced apart along the circumference of the positive electrode disc.

[0022] The interior of the shell is provided with fixing columns, the number and installation positions of the fixing columns match the fixing slots, and when the transcranial magnetic coil is arranged inside the shell, the fixing slots are clamped on the fixing columns.

[0023] The transcranial magnetic coil of the present invention has the following beneficial effects: a unique structural design of stacked C-shaped electrode discs, where each disc is stacked in a staggered manner, forming a spiral conductive channel when compressed. The overall structure is simple, with high heat dissipation efficiency and good focusing. The electrode discs can be produced by fully mechanical processing, which is simple to manufacture, dimensionally stable, and reliable in quality. The electrode discs on either side are respectively the positive and negative discs, with the electrode disc in the middle. All discs are fixed and compressed by spacers and screws. The surface of the electrode discs is insulated, and the uncoated portions at both ends are used for electrical conduction. Current is connected to the positive terminal of the positive disc, flows clockwise through one circle, and then conducts to the next electrode disc. This continues until it reaches the negative disc, conducts one circle on the negative disc, and then flows out along the negative output terminal of the negative disc.

[0024] Other features and aspects of the present application will become apparent from the following detailed description of exemplary embodiments with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments, features, and aspects of the application and, together with the description, serve to explain the principles of the application.

[0026] Figure 1 A schematic exploded view of the structure of the transcranial magnetic coil according to an embodiment of the present application is shown;

[0027] Figure 2 A schematic diagram showing an electrode disk of a transcranial magnetic coil according to an embodiment of the present application is shown;

[0028] Figure 3 A schematic diagram showing the overall structure of the transcranial magnetic coil according to an embodiment of the present application is shown;

[0029] Figure 4 A schematic top view of a transcranial magnetic coil according to an embodiment of the present application is shown;

[0030] Figure 5 A schematic diagram of the positive pole disk of the transcranial magnetic coil according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0031] Various exemplary embodiments, features, and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise indicated.

[0032] Among them, it needs to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention or simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0033] 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 the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0034] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0035] In addition, numerous specific details are provided in the detailed description below to better illustrate the present application. Those skilled in the art will appreciate that the present application can be practiced without certain specific details. In some instances, methods, means, components, and circuits well known to those skilled in the art are not described in detail in order to highlight the main purpose of the present application.

[0036] See Figure 1 and Figure 2The transcranial magnetic coil of the embodiment of the present application includes: a plurality of conductive electrode disks 200, the electrode disk 200 is a plate-shaped, annular structure, an insulating portion is provided along the circumferential direction of the electrode disk, and the surface of the electrode disk 200 opposite to the insulating portion is coated with an insulating coating, one end of the electrode disk 200 adjacent to the insulating portion is the input end, and the other end is the output end, and the plurality of electrode disks 200 are stacked, and the output end of the upper electrode disk 200 is electrically connected to the input end of the lower electrode disk 200 to form a closed power-on circuit, and the input end of the uppermost electrode disk 200 is suitable for connecting to the positive pole of the power supply, and the output end of the lowermost electrode disk 200 is suitable for connecting to the negative pole of the power supply.

[0037] In this embodiment, refer to Figure 2 The unique structural design of the C-shaped electrode discs 200 is stacked in a staggered manner, forming a spiral conductive channel when compressed. The overall structure is simple, with high heat dissipation efficiency and good focusing. The electrode discs 200 can be produced by fully mechanical processing, which is simple to manufacture, dimensionally stable, and reliable. The electrode discs 200 on both sides are respectively the positive electrode disc 100 and the negative electrode disc 300, with the electrode disc 200 in the middle. All discs are fixed and compressed by spacers and screws. The surface of the electrode disc 200 is insulated, and the uncoated portions at both ends are used for electrical conduction. The current is connected to the positive input terminal of the positive electrode disc, flows through a circle clockwise, and then conducts to the next electrode disc. And so on until it reaches the negative electrode disc 300, conducts a circle on the negative electrode disc 300, and flows out along the negative output terminal of the negative electrode disc 300.

[0038] The insulating portion on the electrode disk 200 is a non-electrical structure and may be a notch or made of insulating material.

[0039] The electrode disc 200 is made of copper and can be produced by mechanical processing.

[0040] In one specific embodiment, the current loop has a spiral structure. This structure allows the current to form multiple coils around a concentric axis. The magnetic fields of these coils overlap, forming a strong magnetic field in the center. This structure maximizes space utilization, achieving the strongest magnetic field strength with the smallest volume. Furthermore, the spiral structure allows the magnetic field lines to be more concentrated within a certain range, which is beneficial for achieving higher magnetic field density in areas where a strong magnetic field is required.

[0041] In this embodiment, refer to Figure 2Multiple electrode discs 200 are stacked, and the cross-section of the electrode discs 200 is C-shaped, meaning that the ring-shaped electrode discs 200 have a notch. An insulating coating is applied to the center of the C-shaped electrode disc 200, isolating the center from the outside. However, the outer surfaces of the free ends of the electrode discs 200 are not coated with the insulating coating, allowing them to connect to electricity and conduct electricity, allowing current to flow from one end of the electrode disc 200 to the other.

[0042] Among them, see Figure 1 The multiple electrode discs 200 are staggered so that the input ends 210 of the multiple stacked electrode discs 200 are in a spiral structure, and the output ends 220 of the multiple stacked electrode discs 200 are in a spiral structure, so that the power circuit of the overall structure is in a spiral shape.

[0043] In this embodiment, any two adjacent electrode disks 200 are staggered so that the input end 210 of the middle electrode disk 200 abuts and contacts the output end 220 of the upper electrode disk 200, and the output end 220 of the middle electrode disk 200 abuts and contacts the output end 220 of the lower electrode disk 200. Furthermore, the input end 210 of the upper electrode disk 200 abuts and contacts the location of the middle electrode disk 200 coated with the insulating barrier, and the output end 220 of the lower electrode disk 200 abuts and contacts the location of the middle electrode disk 200 coated with the electrode disc 200.

[0044] Example 1

[0045] According to Figure 1 、 Figure 2 and Figure 3 When at least three electrode discs 200 are included, they are the first electrode disc, the second electrode disc and the third electrode disc from top to bottom. The middle of the first electrode disc coated with an insulating interlayer is the first insulating portion, and its two ends are the first electrode input end and the first electrode output end respectively. The middle of the second electrode disc coated with an insulating interlayer is the second insulating portion, and its two ends are the second electrode input end and the second electrode output end respectively. The middle of the third electrode disc coated with an insulating interlayer is the third insulating portion, and its two ends are the third electrode input end and the third electrode output end respectively.

[0046] Among them, the first electrode disk, the second electrode disk and the third electrode disk are stacked in sequence, and the first electrode disk, the second electrode disk and the third electrode disk are staggered, so that the lower side of the first electrode output end plate surface of the first electrode disk only abuts against part of the second electrode input end plate surface upper side and part of the second electrode insulating portion plate surface upper side of the second electrode disk below, and the lower side of the second electrode input end plate surface of the second electrode disk only abuts against the third insulating portion plate surface upper side of the third electrode disk below, the upper side of the second electrode output end plate surface of the second electrode disk only abuts against the first insulating portion plate surface lower side of the first electrode disk above, and the lower side of the second electrode output end plate surface of the second electrode disk only abuts against part of the third electrode input end plate surface upper side and part of the third insulating portion plate surface upper side of the third electrode disk.

[0047] When a plurality of electrode discs 200 are stacked and staggered, such as the first electrode disc, the second electrode disc, and the third electrode disc in this embodiment, current will flow along a spiral on the entire coil.

[0048] In a specific embodiment, a plurality of electrode disks 200 are coaxially arranged, and after being stacked, the focusing performance of the entire coil can be improved.

[0049] In this embodiment, each stacked electrode disc 200 is coaxially arranged, with equal inner and outer diameters. This ensures consistent electric field distribution across each electrode disc 200. When coils of the same radius are wound, the resulting electric field distribution is relatively consistent due to the consistent shape and size of the coils. This means the electric field is distributed more evenly and predictably in the space surrounding the coils. Furthermore, the electric field strength of the electrode discs 200 is predictable. According to Maxwell's electromagnetic field theory, changes in the current in a coil generate a changing magnetic field around it, which in turn generates an electric field.

[0050] In this embodiment, when the electrode discs have the same radius, the generated electric field strength is more predictable because the inner diameter, outer diameter, and number of electrode discs 200 are relatively fixed. Therefore, the number of electrode discs 200 in this application is not specifically limited and can be set according to specific practical needs.

[0051] In this way, when the radii of the plurality of electrode disks 200 are the same, the electric field distribution can be made more consistent, the electric field intensity can be made more predictable, and this is beneficial for optimizing design and application.

[0052] In one embodiment, see Figure 1 、 Figure 3 、 Figure 4, also includes: a positive electrode disc 100 and a negative electrode disc 300, the positive electrode disc 100 is a plate-shaped, annular structure, and is provided with a notch along the circumferential direction perpendicular to the positive electrode disc 100, and the middle position surface of the positive electrode disc 100 is coated with an insulating coating, one end is the positive electrode input terminal, and the other end is the positive electrode output terminal, the negative electrode disc 300 is a plate-shaped, annular structure, and is provided with a notch along the circumferential direction perpendicular to the negative electrode disc 300, and the middle position surface of the negative electrode disc 300 is coated with an insulating coating, one end is the negative electrode input terminal, and the other end is the negative electrode output terminal, and the negative electrode input terminal is suitable for electrically connecting to the negative pole of the power supply. Among them, the positive electrode disk 100 is arranged on the top of multiple electrode disks 200, the positive electrode input end is suitable for electrically connecting to the positive pole of the power supply, and the positive electrode output end is abutted against the input end of the upper electrode disk 200; the negative electrode disk 300 is arranged at the bottom of multiple electrode disks 200, the negative electrode input end is abutted against the output end of the lower electrode disk 200, and the negative electrode output end is suitable for electrically connecting to the negative pole of the power supply.

[0053] In this embodiment, the positive electrode disc 100 and the negative electrode disc 300 are used to hold multiple electrode discs 200 between them, so that a spiral structure of the power circuit is formed between the positive electrode disc 100 and the negative electrode disc 300, and the positive electrode disc 100 is connected to the positive pole of the power supply, and the negative electrode disc 300 is connected to the negative pole of the power supply, providing a current connection for the electrode disc 200 connected between the positive electrode disc and the negative electrode disc 300.

[0054] In one specific embodiment, heat dissipation holes are provided on the surfaces of the positive electrode disc 100, the electrode disc 200, and the negative electrode disc 300, and the heat dissipation holes provided on the positive electrode disc 100, the electrode disc 200, and the negative electrode disc 300 are connected in sequence. The connected heat dissipation holes on the positive electrode disc 100, the electrode disc 200, and the negative electrode disc 300 can dissipate heat and cool the coil without affecting the magnetic field.

[0055] In this embodiment, the transcranial magnetic coil needs to be immersed in the coolant when dissipating heat and cooling down. Heat exchange is achieved by the entire transcranial magnetic coil being in contact with the immersed coolant. Therefore, the larger the contact area between the transcranial magnetic coil and the coolant, the larger the heat exchange area, thereby improving the heat exchange efficiency between the transcranial magnetic coil and the coolant.

[0056] Example 2

[0057] See Figure 1-Figure 5The surfaces of the positive electrode disc 100, the electrode disc 200, and the negative electrode disc 300 are all provided with heat dissipation holes. When the positive electrode disc 100, the plurality of electrode discs 200, and the negative electrode disc 300 are assembled, the heat dissipation holes formed in the positive electrode disc 100, the plurality of electrode discs 200, and the negative electrode disc 300 form a connected heat dissipation channel. The heat dissipation channel increases the contact between the transcranial magnetic coil and the coolant. When the transcranial magnetic coil is immersed in the coolant, the coolant can pass through the connected heat dissipation channel and exchange heat with the positive electrode disc 100, the plurality of electrode discs 200, and the negative electrode disc 300.

[0058] Multiple mounting bolt holes are provided on the positive electrode disc 100, the electrode disc 200, and the negative electrode disc 300. These mounting bolt holes are spaced apart along the circumference of each of the positive electrode disc 100, the electrode disc 200, and the negative electrode disc 300, with the spacing between any two adjacent heat dissipation holes being equal. Furthermore, the location of the mounting bolt holes on the electrode disc 200 is related to the stacking arrangement of the electrode discs 200. Mounting bolt holes can be provided on multiple electrode discs 200 based on their staggered and stacked arrangement, ensuring that the stacked electrode discs 200, once installed and secured, still form a spiral electrical circuit.

[0059] In a specific embodiment, both the positive disc 100 and the negative disc 300 are provided with power connection parts. The power connection part provided on the positive disc 100 is a positive input power connection part 400, and the power connection part provided on the negative disc 300 is a negative output power connection part 500.

[0060] In this embodiment, the positive input power connection part 400 is a plate-shaped structure with a "Z"-shaped cross-section. The positive input power connection part 400 includes: a positive pole power supply plate 410, a positive pole connecting plate 420 and a positive pole extension plate 430. The positive pole power supply plate 410, the positive pole connecting plate 420 and the positive pole extension plate 430 are connected in sequence, and the spacing angle between the positive pole power supply plate 410 and the positive pole connecting plate 420 is 90 degrees, and the spacing angle between the positive pole connecting plate 420 and the positive pole extension plate 430 is also 90 degrees. Among them, the spacing distance between the positive power supply plate 410 and the positive extension plate 430 is the connection length of the positive connection plate 420, and the connection length of the positive connection plate 420 is less than the total thickness of the multiple stacked electrode discs 200. Therefore, the positive power supply plate 410 is located between the positive disc 100 and the negative disc 300, and the positive extension plate 430 is connected to the positive input end of the positive disc 100, and is integrally formed with the positive input end of the positive disc 100. After the positive input power connection part is powered, the current can be transmitted to the positive input end of the positive disc 100 through the positive connection plate 420 and the positive extension plate 430.

[0061] In this embodiment, the negative output power connection part 500 is a plate-shaped structure with a "Z"-shaped cross-section. The negative output power connection part 500 includes: a negative electrode power supply plate 510, a negative electrode connecting plate 520 and a negative electrode extension plate 530. The negative electrode power supply plate 510, the negative electrode connecting plate 520 and the negative electrode extension plate 530 are connected in sequence, and the interval angle between the negative electrode power supply plate 510 and the negative electrode connecting plate 520 is 90 degrees, and the interval angle between the negative electrode connecting plate 520 and the negative electrode extension plate 530 is also 90 degrees. Among them, the spacing distance between the negative electrode power supply plate 510 and the negative electrode extension plate 530 is the connection length of the negative electrode connection plate 520, and the connection length of the negative electrode connection plate 520 is less than the total thickness of the multiple stacked electrode discs 200. Therefore, the negative electrode power supply plate 510 is located between the negative electrode disc 300 and the negative electrode disc 300, and the negative electrode extension plate 530 is connected to the negative electrode output end of the negative electrode disc 300, and is integrally formed with the negative electrode output end of the negative electrode disc 300. After the positive output power connection part is powered, the current can be transmitted to the negative electrode output end of the negative electrode disc 300 through the negative electrode connection plate 520 and the negative extension plate 530.

[0062] The positive input connection portion 400 and the negative output connection portion 500 are spaced apart by a preset distance in the horizontal direction of the coil, so as to facilitate connection to the positive pole or the negative pole of the power supply.

[0063] In this embodiment, the positive power supply plate 410 of the positive input power connection part 400 and the negative power supply plate 510 of the negative output power connection part 500 are both provided with wire connection holes, which can be used to pass wires through and make contact, and the wires can be fixed on the positive input power connection part 400 and the negative output power connection part 500.

[0064] Example 3

[0065] See Figure 4 The positive input connection 400 is connected to the positive disc 100, with the secondary bend located between the positive disc 100 and the negative disc 300. The negative output connection 500 is connected to the negative disc 300, with the secondary bend located between the positive disc 100 and the negative disc 300. The positive input connection 400 and the negative output connection 500 have opposite primary bends. The positive input connection 400 bends once toward the negative disc 300, while the negative output connection 500 bends once toward the positive disc 100. The secondary bends of both the positive input connection 400 and the negative output connection 500 extend away from the electrode disc 200, thus forming a "Z"-shaped structure.

[0066] The positive input connection 400 and the negative output connection 500 are separated by a predetermined distance along the circumference of the transcranial magnetic coil. The positive input of the power supply can be connected to the positive input connection 400, and the negative output of the power supply can be connected to the negative output connection 500. When energized, the transcranial magnetic coil, composed of multiple interlaced and stacked electrode discs 200, generates a spiral current loop, forming a magnetic field.

[0067] A transcranial magnetic coil device includes: a shell and a transcranial magnetic coil. The shell is a hollow annular structure that covers the outside of the transcranial magnetic coil. The shell has a positive input hole and a negative output hole. The positive input hole corresponds to the positive input end of the positive disk 100, and the negative output hole corresponds to the negative output end of the negative disk.

[0068] In a specific embodiment, a fixing groove 120 extends from the inner side of the positive electrode disc 100. The cross-section of the fixing groove 120 is a "concave"-shaped structure, and there are more than two fixing grooves 120, which are arranged at intervals along the circumferential direction of the positive electrode disc 100. A fixing column is provided inside the shell. The number and installation position of the fixing column match the fixing groove 120. When the transcranial magnetic coil is arranged inside the shell, the fixing groove 120 is clamped on the fixing column.

[0069] In one embodiment, the electrode disk 200 has an inner diameter of 80 mm and an outer diameter of 100 mm.

[0070] The embodiments of the present application have been described above. The above description is illustrative and not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is selected to best explain the principles of the embodiments, their practical applications, or improvements to the technology in the market, or to enable other persons skilled in the art to understand the embodiments disclosed herein.

Claims

1. A transcranial magnetic coil, characterized in that: include: A plurality of electrode discs capable of conducting electricity; The electrode disc is a plate-shaped, annular structure, with an insulating portion provided along the circumferential direction of the electrode disc, and an insulating coating is applied to the surface of the electrode disc opposite to the insulating portion. One end of the electrode disc adjacent to the insulating portion is the input end, and the other end is the output end. Multiple electrode disks are stacked, and the output end of the upper electrode disk is electrically connected to the input end of the lower electrode disk to form a closed power-on circuit. The input end of the uppermost electrode disk is suitable for connecting to the positive pole of the power supply, and the output end of the lowermost electrode disk is suitable for connecting to the negative pole of the power supply.

2. The transcranial magnetic coil according to claim 1, wherein The power supply circuit of the entire transcranial magnetic coil has a spiral structure.

3. The transcranial magnetic coil according to claim 2, wherein: The plurality of electrode disks are coaxially arranged.

4. The transcranial magnetic coil according to any one of claims 1 to 3, characterized in that: Also includes: Positive and negative electrode discs; The positive electrode disc is a plate-shaped, annular structure with a notch provided along a circumferential direction perpendicular to the positive electrode disc, and the middle surface of the positive electrode disc is coated with an insulating coating, one end of the positive electrode disc is a positive electrode input end, and the other end is a positive electrode output end; The negative electrode disc is a plate-shaped, annular structure with a notch provided along a circumferential direction perpendicular to the negative electrode disc, and the middle surface of the negative electrode disc is coated with an insulating coating. One end of the negative electrode disc is a negative electrode input terminal, and the other end is a negative electrode output terminal. The negative electrode input terminal is suitable for electrically connecting to the negative electrode of the power supply; The positive electrode disc is arranged on the top of the plurality of electrode discs, the positive electrode input end is suitable for electrically connecting to the positive pole of the power supply, and the positive electrode output end is abutted against the input end of the upper electrode disc; the negative electrode disc is arranged at the bottom of the plurality of electrode discs, the negative electrode input end is abutted against the output end of the lower electrode disc, and the negative electrode output end is suitable for electrically connecting to the negative pole of the power supply.

5. The transcranial magnetic coil according to claim 4, characterized in that The surfaces of the positive electrode disc, the electrode disc and the negative electrode disc are all provided with heat dissipation holes, and the heat dissipation holes provided on the positive electrode disc, the electrode disc and the negative electrode disc are connected in sequence.

6. The transcranial magnetic coil according to claim 5, characterized in that There are multiple heat dissipation holes, which are spaced apart along the circumferential direction of the electrode disk.

7. The transcranial magnetic coil according to any one of claims 1 to 3, characterized in that: The inner diameter and outer diameter of the plurality of annular electrode discs are equal.

8. The transcranial magnetic coil according to any one of claims 1 to 3, characterized in that: The plurality of electrode discs are arranged in a staggered manner, and the ends of the plurality of electrode discs are abutted in sequence.

9. A transcranial magnetic coil device, characterized in that: include: A housing and the transcranial magnetic coil and the positive plate according to any one of claims 1 to 8; The shell is a hollow annular structure, covering the outside of the transcranial magnetic coil; The shell is provided with a positive input hole and a negative output hole. The positive input hole corresponds to the positive input end of the positive disc, and the negative output hole corresponds to the negative output end of the negative disc.

10. The transcranial magnetic coil device according to claim 9, characterized in that: A fixing groove extends from the inner side of the positive electrode disc. The cross section of the fixing groove is a "concave"-shaped structure. There are two or more fixing grooves, which are spaced apart along the circumferential direction of the positive electrode disc. The interior of the shell is provided with fixing columns, the number and installation positions of the fixing columns match the fixing slots, and when the transcranial magnetic coil is arranged inside the shell, the fixing slots are clamped on the fixing columns.

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