A magnetic interference prevention transcranial magnetic stimulation instrument

By designing a slide rail, slider, and elastic connecting rod, combined with a double-strap fixation mechanism and a woven mesh sleeve to shield against magnetic interference, the problem of low adaptability of transcranial magnetic stimulation devices has been solved, achieving precise positioning of the coil and signal stability, thereby improving treatment effectiveness and comfort.

CN224370464UActive Publication Date: 2026-06-19THE SECOND AFFILIATED HOSPITAL TO NANCHANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
THE SECOND AFFILIATED HOSPITAL TO NANCHANG UNIV
Filing Date
2025-07-09
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Existing transcranial magnetic stimulation (TMS) devices have low adaptability when used on patients with different head sizes, which can lead to misalignment of the stimulation coil and affect the treatment effect.

Method used

The design incorporates a slide rail, slider, and elastic connecting rod, combined with a dual fixing mechanism of first and second straps, ensuring that the coil can be adjusted in position and fits snugly against the head. External magnetic interference is shielded by a woven mesh sleeve and elastic metal wire.

Benefits of technology

It enables flexible adjustment of the coil to adapt to different head sizes, ensuring precise application to the target area, improving treatment effectiveness, reducing signal distortion, and enhancing patient comfort and stability.

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Abstract

The utility model relates to transcranial magnetic stimulator technical field, especially transcranial magnetic stimulator of magnetic interference prevention, including transcranial magnetic stimulator host computer, is equipped with the round seat in the side top of transcranial magnetic stimulator host computer, the top of round seat installs the connecting pipe, and the other end of connecting pipe is connected with transcranial magnetic stimulator host computer through the flexible hose, the outer wall of round seat is installed with annular slide rail, and a plurality of sliding blocks are slidably installed on the slide rail, and the elastic connecting rod is installed on the sliding block, and the other end of connecting rod is fixed on the connecting seat, and the side of connecting seat near annular seat is installed with the transcranial magnetic stimulation coil device, the utility model discloses through the design of slide rail, sliding block and elastic connecting rod, and transcranial magnetic stimulation coil device can be flexibly adjusted position, and the head size and shape of different patients are adapted, ensure that stimulation coil accurately acts on target area, avoid the action position deviation caused by the head size difference, improve the treatment effect.
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Description

Technical Field

[0001] This utility model relates to the field of transcranial magnetic stimulation (TMS) technology, and in particular to a TMS device that is resistant to magnetic interference. Background Technology

[0002] Transcranial magnetic stimulation (TMS) is a non-invasive neuromodulation device based on the principle of Faraday's electromagnetic induction. It uses a time-varying magnetic field to generate induced currents in the cerebral cortex, thereby regulating neuronal excitability. This technology is widely used in the treatment of mental and psychological disorders such as depression, anxiety, and schizophrenia, as well as in the rehabilitation of neurological disorders such as post-stroke motor dysfunction and Parkinson's disease.

[0003] To improve their resistance to magnetic interference, current transcranial magnetic stimulation (TMS) devices use high-permeability materials (such as μ metal or permalloy) to wrap coils or key components, absorbing or guiding stray magnetic fields and reducing external interference. Alternatively, the device casing can be coated with a conductive coating (such as copper or aluminum) to shield high-frequency electromagnetic fields.

[0004] In the use of transcranial magnetic stimulation (TMS), the stimulation coil is placed on a ring-shaped support, which is then worn on the patient's head for TMS. However, due to the varying head sizes of different patients, the adaptability of the TMS is often limited. Furthermore, simply adjusting the diameter of the ring-shaped support can easily cause the stimulation coil to shift its position, affecting the treatment effect. Therefore, a TMS device with anti-magnetic interference design is proposed to address these issues. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned shortcomings in the existing technology by proposing a transcranial magnetic stimulation device that is resistant to magnetic interference.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a transcranial magnetic stimulator with anti-magnetic interference, including a transcranial magnetic stimulator host, a circular seat is provided on the top of one side of the transcranial magnetic stimulator host, a connecting tube is installed on the top of the circular seat, and the other end of the connecting tube is connected to the transcranial magnetic stimulator host through a telescopic flexible tube.

[0007] A ring-shaped slide rail is installed along the outer wall of the circular seat. Several sliders are slidably installed on the slide rail, and elastic connecting rods are installed on the sliders. The other end of the connecting rod is fixed to the connecting seat. A transcranial magnetic stimulation coil is installed on the side of the connecting seat near the ring seat. The transcranial magnetic stimulation coil is fixed to the connecting seat through a fixed seat.

[0008] The present invention also includes a first strap, which passes through the fixing seat and has a first buckle on one side. A second strap is also provided on the outer wall of the first strap, and the inner wall of the second strap is attached to the outer wall of the connecting seat. An L-shaped plate with an opening facing downward is installed on the outer wall of the connecting seat. The second strap is placed inside the L-shaped plate, and a second buckle is provided on one side of the second strap.

[0009] Preferably, the connecting rod includes a coil transmission wire, a braided mesh sleeve is wrapped around the outside of the coil transmission wire, and a plurality of spaced elastic metal wires are arranged on the outer wall of the braided mesh sleeve along the length direction of the coil transmission wire.

[0010] Preferably, one end of the coil transmission wire is connected to the transcranial magnetic stimulation coil, and the other end of the coil transmission wire is connected to two poles. The poles are fixed on the side of the slider near the circular seat. Two annular electrode plates are provided on the inner side of the slide rail. The electrode plates correspond one-to-one with the poles. The electrode plates are connected to the transcranial magnetic stimulation device main unit through wires, and the wires are placed in the connecting tube and the telescopic flexible tube.

[0011] Preferably, a slot is provided at the bottom of the fixing base.

[0012] Preferably, a support frame is installed on the top of the transcranial magnetic stimulation device main unit on the side near the telescopic flexible tube, and a support rod is installed on the other end of the support frame. Two corresponding limiting plates are slidably sleeved on the support rod.

[0013] Preferably, a placement platform is installed on the top of the transcranial magnetic stimulation (TMS) device, and a display and control buttons are provided on the top of the placement platform. Both the display and control buttons are connected to the TMS device via wires. An adjustment button is also provided on one side of the placement platform, and the adjustment button is connected to the TMS device via a wire.

[0014] Preferably, self-locking casters are installed at the bottom corners of the transcranial magnetic stimulation device main unit.

[0015] The design scheme proposed in this utility model has the following beneficial effects in application:

[0016] 1. This utility model, through the design of slide rail, slider and elastic connecting rod, allows the transcranial magnetic stimulation coil device to be flexibly adjusted to adapt to different head sizes and shapes, ensuring that the stimulation coil is accurately applied to the target area, avoiding positional deviation due to differences in head size, and improving the treatment effect.

[0017] 2. This utility model adopts a dual fixing mechanism of first and second straps, combined with L-shaped plate and buckle design, to ensure that the coil device fits tightly to the head during treatment and is not easy to shift, while being convenient and quick to assemble and disassemble, taking into account stability and patient comfort.

[0018] 3. In this utility model, the connecting rod uses a braided mesh to wrap the coil transmission wire and embeds elastic metal wires. This ensures both the flexibility of the wires and the stability of signal transmission, while also shielding against external magnetic field interference through the metal wires, thus reducing signal distortion. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ;

[0020] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;

[0021] Figure 3 This is a schematic diagram of the circular base structure of this utility model. Figure 1 ;

[0022] Figure 4 This is a schematic diagram of the circular base structure of this utility model. Figure 2 ;

[0023] Figure 5 This is a schematic diagram of the cross-sectional structure of the connecting rod of this utility model.

[0024] In the diagram: 1. Transcranial magnetic stimulation (TMS) device main unit; 2. Placement platform; 3. Control buttons; 4. Display; 5. Adjustment button; 6. Telescopic flexible tube; 7. Connecting tube; 8. Circular seat; 9. Slide rail; 10. Slider; 11. Connecting rod; 12. Connecting seat; 13. Fixing seat; 14. TMS coil; 15. First strap; 16. Second strap; 17. L-shaped plate; 18. Slot; 19. First latch; 20. Second latch; 21. Coil transmission wire; 22. Braided mesh sleeve; 23. Elastic metal wire; 24. Support frame; 25. Support rod; 26. Limiting plate; 27. Self-locking caster wheel. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Reference 1- Figure 5 A transcranial magnetic stimulator (TMS) with anti-magnetic interference includes a TMS host 1. Self-locking casters 27 are installed at the bottom corners of the TMS host 1 to facilitate the movement and operation of the TMS host 1 during use.

[0027] It should be noted that in actual use, the transcranial magnetic stimulation device host 1 includes a shell and a controller placed inside the shell. The controller is one of the control host or the control motherboard.

[0028] A circular seat 8 is provided on the top side of the transcranial magnetic stimulation device 1. A connecting tube 7 is installed on the top of the circular seat 8. The other end of the connecting tube 7 is connected to the transcranial magnetic stimulation device 1 through a telescopic hose 6 (that is, the telescopic hose 6 is fixed on the outer shell of the transcranial magnetic stimulation device 1), which facilitates the removal and movement of the circular seat 8.

[0029] Furthermore, such as Figure 1 and Figure 2 As shown, a support frame 24 is installed on the top of the transcranial magnetic stimulation device 1 near the telescopic hose 6 (i.e., the support frame 24 is fixed on the outer shell of the transcranial magnetic stimulation device 1). A support rod 25 is installed at the other end of the support frame 24. Two corresponding limiting plates 26 are slidably sleeved on the support rod 25. When not in use, the connecting pipe 7 can be placed on the support rod 25 and placed between the two limiting plates 26, which facilitates the idle placement of the circular seat 8.

[0030] like Figure 3 and Figure 4 As shown, an annular slide rail 9 is installed along the outer wall of the circular seat 8. Several sliders 10 are slidably installed on the slide rail 9, and elastic connecting rods 11 are installed on the sliders 10. The other end of the connecting rods 11 is fixed to the connecting seat 12. A transcranial magnetic stimulation coil 14 is installed on the side of the connecting seat 12 near the annular seat 8. The transcranial magnetic stimulation coil 14 is fixed to the connecting seat 12 through a fixing seat 13, so that the position of the transcranial magnetic stimulation coil 14 can be adjusted by the sliding of the sliders 10 on the slide rail 9, thereby improving the usability of the transcranial magnetic stimulation coil 14.

[0031] It should be noted that, as Figure 5 As shown, the connecting rod 11 includes a coil transmission wire 21, and a braided mesh sleeve 22 is wrapped around the outside of the coil transmission wire 21. Multiple elastic metal wires 23 are arranged at intervals on the outer wall of the braided mesh sleeve 22. The elastic metal wires 23 are arranged along the length direction of the coil transmission wire 21, so that the connecting rod 11 is elastic. When there is no external force, the connecting rod 11 will remain in a straight state, that is, the transcranial magnetic stimulation coil device 14 is in a coplanar state.

[0032] In order to ensure stable electrical signal transmission between the transcranial magnetic stimulation coil 14 and the controller of the transcranial magnetic stimulation device 1, one end of the coil transmission wire 21 is connected to the transcranial magnetic stimulation coil 14, and the other end of the coil transmission wire 21 is connected to two poles. The poles are fixed on the side of the slider 10 near the circular seat 8. Two annular electrode plates are provided on the inner side of the slide rail 9. The electrode plates correspond one-to-one with the poles. The electrode plates are connected to the transcranial magnetic stimulation device 1 through wires (that is, the electrode plates are connected to the controller of the transcranial magnetic stimulation device 1 through wires). The wires are placed in the connecting tube 7 and the telescopic hose 6.

[0033] This utility model also includes a first strap 15, which passes through the fixing seat 13 and has a first buckle 19 on one side. A second strap 16 is also provided on the outer wall of the first strap 15, and the inner wall of the second strap 16 is attached to the outer wall of the connecting seat 12. An L-shaped plate 17 with an opening facing downward is installed on the outer wall of the connecting seat 12. The second strap 16 is placed inside the L-shaped plate 17, and a second buckle 20 is provided on one side of the second strap 16. In use, the first strap 15 is tied to the patient's head so that the transcranial magnetic stimulation coil 14 can be tightly attached to the patient's head at the application position. The binding of the second strap 16 can further improve the stability of the transcranial magnetic stimulation coil 14 on the patient's head and also facilitate the detachment of the connecting seat 12 from the second strap 16.

[0034] Furthermore, a slot 18 is provided at the bottom of the fixing base 13 to facilitate the removal of the transcranial magnetic stimulation coil 14 from the first strap 15. During use, the required number of transcranial magnetic stimulation coils 14 can be determined according to the patient's head size and treatment intensity. Unused transcranial magnetic stimulation coils 14 will be lifted upwards by the elastic action of the connecting rod 11 (i.e., the elastic metal wire 23), so that unused transcranial magnetic stimulation coils 14 will not affect the arrangement and setting of the transcranial magnetic stimulation coils 14 that need to be used. The movable installation of the first strap 15 between the transcranial magnetic stimulation coil 14 and the connecting base 12, and the sliding of the slider 10 on the slide rail 9, also allow the working position of the transcranial magnetic stimulation coil 14 to be adjusted, ensuring that the transcranial magnetic stimulation coil 14 can be accurately adjusted to the working position under different head diameters, so that the transcranial magnetic stimulation coil 14 can have a better working effect.

[0035] A placement platform 2 is installed on the top of the transcranial magnetic stimulation (TMS) device host 1. A display 4 and control buttons 3 are installed on the top of the placement platform 2. Both the display 4 and control buttons 3 are connected to the TMS device host 1 via wires (i.e., both the display 4 and control buttons 3 are connected to the controller of the TMS device host 1 via wires). An adjustment button 5 is also provided on one side of the placement platform 2. The adjustment button 5 is connected to the TMS device host 1 via wires (i.e., the adjustment button 5 is connected to the controller of the TMS device host 1 via wires), so that medical personnel can operate the TMS device and adjust the treatment status in real time.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A transcranial magnetic stimulation device with anti-magnetic interference, characterized in that: The transcranial magnetic stimulation device includes a main unit (1), a circular seat (8) is provided on the top of one side of the main unit (1), a connecting tube (7) is installed on the top of the circular seat (8), and the other end of the connecting tube (7) is connected to the main unit (1) through a telescopic flexible tube (6). A ring-shaped slide rail (9) is installed along the outer wall of the circular seat (8). Several sliders (10) are slidably installed on the slide rail (9). A flexible connecting rod (11) is installed on the slider (10). The other end of the connecting rod (11) is fixed on the connecting seat (12). A transcranial magnetic stimulation coil (14) is installed on the side of the connecting seat (12) close to the circular seat (8). The transcranial magnetic stimulation coil (14) is fixed to the connecting seat (12) through a fixing seat (13). It also includes a first strap (15), which passes through the fixing seat (13) and has a first buckle (19) on one side. A second strap (16) is also provided on the outer wall of the first strap (15). The inner wall of the second strap (16) is attached to the outer wall of the connecting seat (12). An L-shaped plate (17) with an opening facing downward is installed on the outer wall of the connecting seat (12). The second strap (16) is placed inside the L-shaped plate (17), and a second buckle (20) is provided on one side of the second strap (16).

2. The transcranial magnetic stimulation device with anti-magnetic interference as described in claim 1, characterized in that: The connecting rod (11) includes a coil transmission wire (21), and a braided mesh sleeve (22) is wrapped around the outside of the coil transmission wire (21). Multiple elastic metal wires (23) are arranged at intervals on the outer wall of the braided mesh sleeve (22), and the elastic metal wires (23) are arranged along the length direction of the coil transmission wire (21).

3. A transcranial magnetic stimulation device with anti-magnetic interference as described in claim 2, characterized in that: One end of the coil transmission wire (21) is connected to the transcranial magnetic stimulation coil (14), and the other end of the coil transmission wire (21) is connected to two poles. The poles are fixed on the side of the slider (10) near the circular seat (8). Two annular electrode plates are provided on the inner side of the slide rail (9). The electrode plates correspond one-to-one with the poles. The electrode plates are connected to the transcranial magnetic stimulation device host (1) through wires. The wires are placed in the connecting tube (7) and the telescopic hose (6).

4. A transcranial magnetic stimulation device with anti-magnetic interference as described in claim 1, characterized in that: A slot (18) is provided at the bottom of the fixing base (13).

5. A transcranial magnetic stimulation device with anti-magnetic interference as described in claim 1, characterized in that: A support frame (24) is installed on the top of the transcranial magnetic stimulation device (1) near the telescopic hose (6). A support rod (25) is installed at the other end of the support frame (24). Two corresponding limiting plates (26) are slidably sleeved on the support rod (25).

6. A transcranial magnetic stimulation device with anti-magnetic interference as described in claim 1, characterized in that: A placement platform (2) is installed on the top of the transcranial magnetic stimulation device (1). A display (4) and control buttons (3) are provided on the top of the placement platform (2). The display (4) and control buttons (3) are connected to the transcranial magnetic stimulation device (1) through wires. An adjustment button (5) is also provided on one side of the placement platform (2). The adjustment button (5) is connected to the transcranial magnetic stimulation device (1) through wires.

7. A transcranial magnetic stimulation device with anti-magnetic interference as described in claim 1, characterized in that: Self-locking casters (27) are installed at the bottom corners of the transcranial magnetic stimulation device (1).