Depth switching stimulation coil and device
By designing a movable coil structure, the problem of existing magnetic stimulation coils being unable to adapt to different head shapes is solved, achieving effective stimulation and flexible adaptation of deep brain regions, improving the depth of magnetic stimulation and possessing energy-saving advantages.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-03
- Publication Date
- 2026-03-24
AI Technical Summary
Existing magnetic stimulation coils cannot effectively stimulate deep brain regions and are difficult to adapt to different head sizes of patients.
Design a depth-switching stimulation coil, including a bridging structure, a cover, a mounting plate, and multiple coil discs. The coil discs are movably mounted on the mounting plate and can be brought closer to or further away from the head to adapt to different head shapes. Each coil disc can independently control magnetic stimulation.
It achieves flexible adaptation for patients with different head shapes, can more comprehensively stimulate brain regions, improve the depth of magnetic stimulation, reduce the impact on the superficial cortex, and has the effects of energy saving and extended service life.
Smart Images
Figure CN224024067U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to medical instrument technical field especially, and it is a kind of depth switching stimulating coil and equipment. BACKGROUND
[0002] Deep transcranial magnetic stimulation (dTMS) has been widely concerned as an effective diagnosis and treatment tool for neuropsychiatric diseases. After continuous research and clinical application by experts and scholars, depression, schizophrenia, dystonia and other diseases are related to the deep structure of the brain. However, the current magnetic stimulation coil can only stimulate 1.5-2.0 cm under the scalp, and cannot directly stimulate the deep area of the brain. Deep transcranial magnetic stimulation technology aims to improve the stimulation depth while reducing the impact on the superficial cortex, and is one of the research hotspots in the field of transcranial magnetic stimulation technology.
[0003] Based on the principle of superposition of induced electric field vectors, the brain deep magnetic stimulation H coil with complex structure can strengthen the induced electric field in the target tissue and reduce the stimulation intensity in the non-target tissue, which shows good depth characteristics. The existing TMS equipment mainly uses planar circular coil and planar 8-shaped coil, and the deep stimulation coil has H series. However, this structure is fixed, and the size of each patient's head is different. The existing structure is difficult to adapt one by one. SUMMARY
[0004] The utility model aims at the technical problem existing in the background art, and provides a kind of depth switching stimulating coil.
[0005] To achieve the above technical purpose, the utility model adopts the technical scheme as follows in the first aspect:
[0006] A depth switching stimulating coil acts on the human head. The depth switching stimulating coil includes a bridge, a cover, a mounting plate and a plurality of coil discs. The cover is installed on the bridge, the mounting plate is arranged in the cover, and the plurality of coil discs are movably installed on the mounting plate and arranged in a structure form wrapping the upper part of the human head. The plurality of coil discs can be close to or away from the human head to adapt to different head shapes.
[0007] Preferably, the coil disc is provided with two and symmetrically arranged on the mounting plate.
[0008] Preferably, the coil disc includes a fixing member and a coil. The first part of the coil is arranged on the fixing member, the second part of the coil is inserted into the mounting plate, and the two ends of the coil are extended and passed through the cover and the bridge to serve as positive and negative electrodes.
[0009] Preferably, the coil also includes multiple wire-clamping components, which are mounted on the first surface of the fixing member. The second surface of the fixing member faces the human head, and the first part of the coil is mounted on the multiple wire-clamping components and coiled on the first surface.
[0010] Preferably, the fastener has a semi-gourd structure, with the convex outer wall of the semi-gourd structure being the first surface and the concave inner wall of the semi-gourd structure being the second surface.
[0011] Preferably, the multiple wire clips are arranged in nine layers on the first surface.
[0012] Preferably, the coil disc further includes insulating adhesive, which is applied to the coil and the fixing member to fix the coil to the fixing member.
[0013] Preferably, the insulating adhesive includes epoxy resin adhesive.
[0014] Preferably, the coil also includes an adjusting member, which is mounted on the fixing member. The fixing member is mounted on the mounting plate via the adjusting member, wherein the adjusting member is used to adjust the distance between the fixing member and the human head.
[0015] The technical solution adopted by this utility model in the second aspect is as follows: a device, comprising a depth-switching stimulation coil as described in any of the above solutions.
[0016] Compared with the prior art, the utility model has the following beneficial technical effects: by installing the cover on the bridge, setting the mounting plate inside the cover, and movably installing multiple coil discs on the mounting plate, and evenly arranging them in a structure that wraps around the top of the human head, the multiple coil discs can be close to or far from the human head to adapt to different head shapes, and each coil disc can be independently controlled to perform magnetic stimulation, so as to perform magnetic stimulation on a designated area of the human head. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the usage state of an embodiment of the present utility model. Figure 1 ;
[0018] Figure 2 This is a schematic diagram of the usage state of an embodiment of the present utility model. Figure 2 ;
[0019] Figure 3 This is a schematic diagram of the usage state of an embodiment of the present utility model. Figure 3 ;
[0020] Figure 4 This is a schematic diagram of the coil disk and mounting plate according to an embodiment of the present utility model.
[0021] Icon labels:
[0022] 100 bridges
[0023] 200 masks
[0024] 300 mounting plate
[0025] 400 Coil disc, 401 Fixing component, 402 Coil, 403 Wire clamping component, 404 Adjusting component. Detailed Implementation
[0026] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0027] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or assembly referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more features. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a link, or a specific connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the connection within two groups. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0029] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.
[0030] like Figures 1-4 As shown, this utility model proposes a depth-switching stimulation coil that acts on the human head. The depth-switching stimulation coil includes a bridge 100, a cover 200, a mounting plate 300, and multiple coil discs 400. The cover 200 is mounted on the bridge 100, and the mounting plate 300 is disposed inside the cover 200.
[0031] Specifically, in this embodiment, the bridge 100 is the main beam of the depth-switching stimulation coil and a medium for connecting with an external host device. The structure of the bridge 100 is similar to an arch bridge, which spans the human head, and the cover 200 is set at the arch of the bridge 100. Both the bridge 100 and the cover 200 are provided with wiring holes so that the wires of the coil 400 can pass through the wiring holes and be electrically connected to the corresponding electronic device. Of course, the structural shape of the bridge 100 is not limited to an arch bridge, but can be a ring or other shapes.
[0032] Multiple coil discs 400 are movably mounted on the mounting plate 300 and are evenly arranged in a structure that wraps around the top of the human head. The multiple coil discs 400 can be close to or far from the human head to adapt to different head shapes.
[0033] Specifically, multiple coils 400 are evenly arranged on the mounting plate 300 around the shape of the human head, as shown in the attached diagram. Figures 2-3 As shown, this ensures that the entire human head is within the stimulation area of the depth-switching stimulation coil. The movable arrangement of the multiple coil discs 400 includes, but is not limited to, purely structural controllable hinges, fasteners, pins, and plates with a certain degree of toughness, as well as electronically controlled motor-driven page-turning structures, gear control, etc. By adjusting the multiple coil discs 400 closer to or further away from the human head, it can adapt to different head circumferences of different patients. Compared to the traditional high-cost adaptation method that requires additional multiple sizes and models, this structure is more flexible and makes it easier to adjust the arrangement of the multiple coil discs 400 according to the patient's condition.
[0034] Furthermore, two coil discs 400 are provided and are symmetrically arranged on the mounting plate 300.
[0035] In this embodiment, the stimulation areas of the two coil disks 400 are the left and right hemispheres of the brain, which include the frontal lobe, temporal lobe, parietal lobe, occipital lobe, and insula. This provides more comprehensive stimulation of the brain and has profound significance for the study of higher neural centers such as the motor center, sensory center, and visual center. Furthermore, the coil disks 400 can be independently controlled. Depending on the patient's treatment, one coil disk 400 can be operated to stimulate one hemisphere, or both coil disks 400 can be operated to stimulate the whole brain. During hemisphere stimulation, the other coil disk 400 can operate without power, thereby achieving energy saving and extending the lifespan of the depth-switching stimulation coil. Of course, in addition to the design with two coil disks 400, this invention can also be designed with more than two coil disks 400, each coil disk 400 can stimulate a specific area of the brain, achieving the function of subdividing the stimulation area.
[0036] Furthermore, the coil disc 400 includes a fixing member 401 and a coil 402. A first part of the coil 402 is placed on the fixing member 401, and a second part of the coil 402 is inserted into the mounting plate 300. The two ends of the coil 402 extend and pass through the cover 200 and the bridge 100 to serve as positive and negative electrodes.
[0037] See appendix Figure 4 The coil 402 is a conductive metal wire of a certain length. The middle part of the wire (i.e., the first part of the coil 402) is bent according to the structural shape of the fixing member 401 and attached to the fixing member 401. From a visual perspective, the coil 402 covers the surface of the fixing member 401. This ensures that when the fixing member 401 is placed above the human head, the coil 402 covering the fixing member 401 can provide effective magnetic stimulation to the human head after activation. The second part of the coil 402 and the two ends of the coil 402 extend from the fixing member 401 to the mounting plate 300. The mounting plate 300 is used to position the second part of the coil 402 and the two ends, so that the two ends can extend out of the cover 200 and the bridge 100, and serve as positive and negative electrodes to connect with external electrical equipment.
[0038] Furthermore, the coil 400 also includes a plurality of wire-clamping components 403, which are mounted on the first surface of the fixing member 401. The second surface of the fixing member 401 faces the human head. The first part of the coil 402 is mounted on the plurality of wire-clamping components 403 and coiled on the first surface.
[0039] Specifically, the first end of the wire clamp 403 is fixedly connected to the fixing member 401. This fixed connection includes, but is not limited to, bonding, welding, clamping, and fastening with screws or other fastening structures. The second end of the wire clamp 403 is adapted to the coil 402 and can hold the coil 402. In this embodiment, the second end of the wire clamp 403 has an open semi-ring structure, where the opening size is smaller than the coil 402 size. However, this open semi-ring structure has a certain degree of deformation, allowing the opening to unfold so that the coil 402 can enter the ring. Under the deformation, the opening returns to its original shape, thus enabling the installation of the coil 402. This installation structure facilitates quick assembly and disassembly of the coil 402, making operation convenient and beneficial for subsequent maintenance, reducing maintenance costs. Of course, the wire clamp 403 can also adopt other structures, such as hooks, cable ties, etc., for fixing the coil 402. The coil 402 is made of 1300 strands of Litz wire with a circular cross-section diameter of 5.5mm.
[0040] Furthermore, the fastener 401 has a semi-gourd structure, with the convex outer wall of the semi-gourd structure being the first surface and the concave inner wall of the semi-gourd structure being the second surface.
[0041] Specifically, the semi-spherical structure is a quarter-sphere structure, mainly designed to fit the hemisphere of the human head, partially wrapping around the upper part of the head. This ensures that the magnetic stimulation of the coil 402 after being energized can better reach the partially wrapped hemisphere. Since there are two coils 400 arranged symmetrically, they achieve full coverage of the upper part of the human head. The two coils 400 can work independently and be energized and controlled. Depending on the patient's treatment, one coil 400 can be controlled to stimulate one hemisphere, or both coils 400 can be controlled to stimulate the whole brain.
[0042] Furthermore, multiple wire clips 403 are arranged in nine layers on the first surface.
[0043] See attached Figure 4 Multiple wire clips 403 are arranged layer by layer along the first surface of the semi-gourd structure. In this embodiment, nine layers are arranged. Of course, the number of layers here is only a preferred number in this embodiment. Moreover, with this number of layers, the magnetic stimulation of the coil 402 after being energized can act on the human head better and more effectively. The number of layers can be determined according to the actual application.
[0044] Furthermore, the coil disc 400 also includes insulating adhesive, which is applied to the coil 402 and the fixing member 401 to fix the coil 402 to the fixing member 401. The insulating adhesive includes epoxy resin adhesive.
[0045] Specifically, in another embodiment, the coil 402 is directly glued to the fixing member 401 with insulating adhesive without the wire clamp 403. Although this method can make the coil 402 fit the fixing member 401 more closely, the structure of the coil 402 needs to be bent to fit the first surface of the fixing member 401. In addition, when applying insulating adhesive, the coil 402 needs to be supported until the insulating adhesive has fixed the coil 402 before the support can be removed, which is a relatively cumbersome operation. In this embodiment, the coil 402 is pre-wound to the first surface of the fixing member 401 with the wire clamp 403. Due to the arrangement of multiple wire clamps 403, the coil 402 can be wound into a shape that fits the fixing member 401 according to the arrangement of the wire clamps 403, without the need to pre-wound the corresponding shape structure. The wire clamp 403 can also serve as a support structure to ensure that the coil 402 always maintains the shape that fits the fixing member 401 in this position. By applying insulating adhesive, the coil 402 is further fixed to the first surface of the fixing member 401.
[0046] Furthermore, the coil 400 also includes an adjusting member 404, which is mounted on the fixing member 401. The fixing member 401 is mounted on the mounting plate 300 via the adjusting member 404. The adjusting member 404 is used to adjust the distance between the fixing member 401 and the human head.
[0047] Specifically, the adjusting component 404 is a deformable plate, with one end fixed to the mounting plate 300 and the other end fixedly connected to the fixing component 401. The adjusting component 404 can be adjusted manually to change the relative position of its two ends on the vertical plane, thereby moving the fixing component 401 closer to or further away from the human head to adjust the distance. Furthermore, the adjusting component 404 can be an integral structure with the fixing component 401. The adjusting component 404 is formed by bending and cutting. The coil fixing component made of special material (PC-A863) has good heat resistance, impact resistance, and toughness. The good toughness allows the coil to expand at a certain angle according to the size of the human head (extending to both sides at an angle of 6-10°), which comprehensively improves the practical functionality of the deep magnetic stimulation coil.
[0048] In a second aspect, this invention also provides a device comprising a depth-switching stimulation coil as described in any of the preceding claims.
[0049] The above descriptions provide one or more embodiments in conjunction with specific details, but do not imply that the specific implementation of this utility model is limited to these descriptions. Any methods or structures that are similar to or identical to those of this utility model, or any technical deductions or substitutions made based on the concept of this utility model, should be considered within the scope of protection of this utility model.
Claims
1. A depth-switching stimulation coil applied to the human head, characterized in that, include: Bridge construction (100); The cover (200) is installed on the bridge (100); Mounting plate (300) is disposed inside the cover (200); Multiple coil discs (400) are movably mounted on the mounting plate (300) and are evenly arranged in a structure that wraps around the top of the human head. The multiple coil discs (400) can be close to or far from the human head to adapt to different head shapes.
2. The depth-switching stimulation coil according to claim 1, characterized in that, Two coil disks (400) are provided and symmetrically arranged on the mounting plate (300).
3. The depth-switching stimulation coil according to claim 2, characterized in that, The coil disc (400) includes a fixing member (401) and a coil (402). A first part of the coil (402) is placed on the fixing member (401), and a second part of the coil (402) is inserted into the mounting plate (300). The two ends of the coil (402) extend and pass through the cover (200) and the bridge (100) to serve as positive and negative electrodes.
4. The depth-switching stimulation coil according to claim 3, characterized in that, The coil disc (400) also includes a plurality of wire-clamping components (403), which are mounted on the first surface of the fixing member (401). The second surface of the fixing member (401) faces the human head. The first part of the coil (402) is mounted on the plurality of wire-clamping components (403) and coiled on the first surface.
5. A depth-switching stimulation coil according to claim 4, characterized in that, The fastener (401) has a semi-gourd structure, with the outer convex wall of the semi-gourd structure being the first surface and the inner concave wall of the semi-gourd structure being the second surface.
6. A depth-switching stimulation coil according to claim 4, characterized in that, The plurality of said wire clips (403) are arranged in nine layers on the first surface.
7. A depth-switching stimulation coil according to claim 3, characterized in that, The coil disc (400) also includes insulating adhesive, which is applied to the coil (402) and the fixing member (401) to fix the coil (402) to the fixing member (401).
8. A depth-switching stimulation coil according to claim 7, characterized in that, The insulating adhesive includes epoxy resin adhesive.
9. A depth-switching stimulation coil according to claim 4, characterized in that, The coil disc (400) further includes an adjusting member (404), which is mounted on the fixing member (401). The fixing member (401) is mounted on the mounting plate (300) via the adjusting member (404). The adjusting member (404) is used to adjust the distance between the fixing member (401) and the human head.
10. A device, characterized in that, Includes a depth-switching stimulation coil as described in any one of claims 1-9.