Polygonal coil with adjustable central high field intensity area

Abstract

The utility model relates to a polygonal coil with an adjustable central high-field-intensity area, which comprises a plurality of conductive electrode discs and two-connection pole pieces, each electrode disc is of a plate-shaped polygonal annular structure, the surface of each electrode disc is coated with an insulating coating with a preset length in the circumferential direction, one end, adjacent to an insulating part, of each electrode disc is an input end, and the other end of each electrode disc is an output end; the 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 two-connection pole piece is of an 8-shaped structure and comprises a first electrode disc and a second electrode disc, the output end of the first electrode disc is electrically connected with the output end of the second electrode disc, and the output end of the second electrode disc is electrically connected with the output end of the second electrode disc. On the first electrode disc and the second electrode disc which are arranged in a stacked mode, the size of a magnetic field overlapping area can be accurately adjusted through the polygonal and annular electrode disc pole pieces.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, and particularly relates to a polygonal coil with adjustable central high-field region. BACKGROUND

[0002] Magnetic stimulation is a non-invasive neuromodulation technique that uses time-varying magnetic fields to induce depolarization of cortical neurons, thereby producing excitatory or inhibitory effects. At present, transcranial magnetic stimulation (TMS) has been widely used in the fields of neuroscience research, clinical diagnosis and treatment, etc. The core component of a TMS system is a magnetic coil, which determines the spatial resolution and stimulation intensity of magnetic stimulation. The traditional figure-8 circular coil is the most commonly used coil form, which is composed of two circular coils. The coils intersect and overlap at the center to form an "8" shape. This structure makes the magnetic field have a high field strength and good focusing performance in the central region. However, since the two coils only overlap at one point, the high-field region formed is very limited, and the spatial range is fixed, which seriously limits the flexibility of the magnetic field distribution and makes it difficult to adapt to different stimulation targets and requirements. CONTENT OF THE UTILITY MODEL

[0003] Therefore, the present application provides a polygonal coil with adjustable central high-field region.

[0004] According to an aspect of the present application, a polygonal coil with adjustable central high-field region is provided, comprising: a plurality of electrically conductive electrode discs and two connecting electrode plates.

[0005] The electrode disc is in a plate shape and a multi-edge ring shape, and a preset length of insulating coating is coated on the surface in the circumferential direction. One end of the electrode disc adjacent to the insulating coating is an input end, and the other end is an output end. A plurality of electrode discs are arranged in layers, and the output end of the upper electrode disc is electrically connected to the input end of the lower electrode disc to form a closed power supply loop.

[0006] The two-connected electrode sheet is in an "8" shape structure, including a first electrode disc and a second electrode disc, the first electrode disc and the second electrode disc are both in a plate-shaped, multi-edge ring structure, the output end of the first electrode disc is electrically connected with the output end of the second electrode disc, a plurality of the electrode discs arranged in layers are arranged on the first electrode disc, the output end of the lower electrode disc is connected with the input end of the first electrode disc, a plurality of the electrode discs arranged in layers are arranged on the second electrode disc, the input end of the lower electrode disc is connected with the output end of the first electrode disc, the input end of the upper electrode disc on the first electrode disc is suitable for connecting the positive electrode of the power supply, and the output end of the upper electrode disc on the second electrode disc is suitable for connecting the negative electrode of the power supply.

[0007] In a possible implementation, the electrode disc is in a ring-shaped, multi-edge structure, and the edge length of the electrode disc has a preset length, and the ring width has a preset width.

[0008] The plurality of electrode discs have a preset overlapping electromagnetic field region.

[0009] In a possible implementation, the electrode discs on the first electrode disc are coaxially arranged.

[0010] The electrode discs on the second electrode disc are coaxially arranged.

[0011] In a possible implementation, the positive electrode disc and the negative electrode disc are further included.

[0012] The positive electrode disc is in a plate-shaped, ring structure, is provided with a gap in a direction perpendicular to the circumferential direction of the positive electrode disc, and has an insulating coating on the surface at the middle position, one end is a positive input end, and the other end is a positive output end, the positive electrode disc is arranged on the top of the plurality of electrode discs on the first electrode disc, the positive input end is suitable for electrically connecting the positive electrode of the power supply, and the positive output end is in abutment with the input end of the upper electrode disc,

[0013] The negative electrode disc is in a plate-shaped, ring structure, is provided with a gap in a direction perpendicular to the circumferential direction of the negative electrode disc, and has an insulating coating on the surface at the middle position, one end is a negative input end, and the other end is a negative output end, the negative electrode disc is arranged on the top of the plurality of electrode discs on the second electrode disc, the negative input end is in abutment with the output end of the upper electrode disc, and the negative output end is suitable for electrically connecting the negative electrode of the power supply.

[0014] In a possible implementation, the plurality of electrode discs are bolted with the two-connected electrode sheet.

[0015] In a possible implementation, the electrode disc is provided with an opening at a position where the electrode disc is not coated with the insulating coating.

[0016] In a possible implementation, the energization loop of the plurality of electrode discs on the first electrode disc is in a spiral structure.

[0017] The energization loop of the plurality of electrode discs on the second electrode disc is in a spiral structure.

[0018] In a possible implementation, the plate surface of the positive electrode disc, the electrode disc, the two-electrode disc and the negative electrode disc is provided with a heat dissipation hole, and the heat dissipation holes on the positive electrode disc, the electrode disc, the two-electrode disc and the negative electrode disc are sequentially communicated.

[0019] In a possible implementation, the electrode disc has a preset cross-sectional diameter.

[0020] In a possible implementation, the material of the electrode disc is red copper, and the insulating coating is a Teflon insulating coating.

[0021] The polygonal coil with an adjustable central high-field region has the following advantages: the size of the magnetic field overlap region can be accurately adjusted by the polygonal electrode disc, and the electrode discs are sequentially and staggered stacked to form a spiral conductive channel in a compressed state, the overall structure is simple, the heat dissipation efficiency is high, and the focusing property is good. The electrode disc can be produced by full mechanical machining, the manufacturing method is simple, the size is stable, and the quality is reliable. Specifically, the current enters from the front conduction region of the electrode disc, circulates counterclockwise in the disc for one turn, and then is led out from the back conduction region to enter the next layer of electrode disc. The specific flow path is as follows: the current is introduced from the positive electrode disc, circulates counterclockwise along the front region to enter the back of the upper electrode disc, enters the back from the front after internal circulation, enters the back of the lower electrode disc after internal circulation, and so on. The current alternately circulates between the electrode discs until it reaches the two-electrode disc in the shape of an eight, changes direction in the two-electrode disc, enters the other side of the plurality of stacked electrode discs, and is finally led out from the negative electrode disc. The current forms a closed loop in each electrode disc and can be smoothly diverted, so that the current continuously and efficiently flows in the entire coil.

[0022] Other features and aspects of the present application will become apparent from the following detailed description of exemplary embodiments with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0023] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments, features, and aspects of the present application and serve to explain the principles of the present application.

[0024] Figure 1An exploded main body structure schematic diagram of the polygonal coil with adjustable central high field strength region according to the embodiment of the present application is shown.

[0025] Figure 2 A main body structure schematic diagram of the polygonal coil with adjustable central high field strength region according to the embodiment of the present application is shown.

[0026] Figure 3 Front and top view main body structure schematic diagrams of the polygonal coil with adjustable central high field strength region according to the embodiment of the present application are shown.

[0027] Figure 4 Bottom and top view main body structure schematic diagrams of the polygonal coil with adjustable central high field strength region according to the embodiment of the present application are shown.

[0028] Figure 5 Positive and negative electrode sheet main body structure schematic diagrams of the electrode sheet according to the embodiment of the present application are shown.

[0029] Figure 6 A main body structure schematic diagram of the polygonal coil with adjustable central high field strength region according to the embodiment of the present application is shown.

[0030] Figure 7 A main body structure schematic diagram of the two-connected sheet according to the 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 numbers in the drawings represent functionally identical or similar elements. Although various aspects of the embodiments are shown in the drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

[0032] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application or simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0033] In addition, the terms "first", "second", etc. are used only for descriptive purposes and should not be construed as implying or suggesting relative importance or an indicated number of technical features. Thus, the features defined with "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified.

[0034] The word "exemplary" is used herein to mean "serving as an example, instance, or illustration." Any implementation described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other implementations.

[0035] In addition, in order to better illustrate the present application, a large number of specific details are given in the specific embodiments below. Those skilled in the art should understand that the present application can also be implemented without certain specific details. In some examples, methods, means, elements and circuits well known to those skilled in the art are not described in detail, in order to highlight the main ideas of the present application.

[0036] As shown in Figures 1-7 The center high-field region adjustable polygonal coil of the present application comprises: a plurality of electrically conductive electrode discs 200 and two connecting electrode plates 300. The electrode disc 200 is a plate-shaped, multi-edge ring structure, and the surface is coated with a preset length of insulating coating in the circumferential direction. One end of the electrode disc 200 adjacent to the insulating coating is the input end, and the other end is the output end. A plurality of electrode discs 200 are stacked, and the output end of the upper electrode disc 200 is electrically connected to the input end of the lower electrode disc 200, forming a closed power supply loop. The two connecting electrode plates 300 are in the shape of an "8", including a first electrode disc 200 and a second electrode disc 200. Both the first electrode disc 200 and the second electrode disc 200 are plate-shaped, multi-edge ring structures. The output end of the first electrode disc 200 is electrically connected to the output end of the second electrode disc 200. A plurality of stacked electrode discs 200 are arranged on the first electrode disc 200, and the output end of the lower electrode disc 200 is connected to the input end of the first electrode disc 200. A plurality of stacked electrode discs 200 are arranged on the second electrode disc 200, and the input end of the lower electrode disc 200 is connected to the output end of the first electrode disc 200. The input end of the upper electrode disc 200 on the first electrode disc 200 is adapted to be connected to the positive electrode of the power supply, and the output end of the upper electrode disc 200 on the second electrode disc 200 is adapted to be connected to the negative electrode of the power supply.

[0037] In this embodiment, the size of the magnetic field overlapping area can be accurately adjusted by the polygonal ring-shaped electrode disc 200, and the electrode discs 200 are sequentially and staggered stacked, and a spiral conductive channel is formed in a compressed state. The overall structure is simple, the heat dissipation efficiency is high, and the focusing property is good. The electrode disc 200 can be produced by full mechanical processing, the production method is simple, the size is stable, and the quality is reliable. Specifically, the current enters from the front conductive area of the electrode disc 200, circulates in the electrode disc 200 in the counterclockwise direction, and then is led out from the back conductive area to enter the next layer of electrode disc 200. The specific flow route is: the current is introduced from the positive electrode disc 110, circulates in the counterclockwise direction along the front area, enters the back of the upper electrode disc 200, enters the back from the front after internal circulation, enters the back of the lower electrode disc 200 after internal circulation, and so on, until reaching the two-connected electrode disc 300 of the eight-shaped structure. The internal current of the two-connected electrode disc 300 changes direction, enters the other side of the plurality of stacked electrode discs 200, and is finally led out from the negative electrode disc 120. The current forms a closed loop in each electrode disc, and can be smoothly diverted, so that the current continuously and efficiently flows in the entire coil.

[0038] In this embodiment, the input end and the output end of the electrode disc are the conductive area 210.

[0039] In a specific embodiment, the top disc adopts a double-sided conductive design, and the two sides are uniformly distributed with conductive areas for seamless current flow and connection with other electrode discs. The positive electrode disc 110 is provided with a conductive area on one side for connection with the double-sided electrode disc, and a wiring end on the other side. The negative electrode disc 120 is opposite to the positive electrode disc 110, and is provided with a conductive area on one side for connection with the double-sided electrode disc, and a wiring end on the other side. In addition, one side of the secondary connecting disc is provided with a conductive area for connection with the double-sided electrode disc, and simultaneously functions as a fixing and adjusting mechanism for the distance between the left and right coils. The shape of each electrode disc adopts a special polygonal ring design. The non-insulated areas on the front and back of the electrode disc 200 are used as current conductive paths.

[0040] In a specific embodiment, the electrode disc 200 is ring-shaped and polygonal, and the side length of the electrode disc 200 has a predetermined length, and the ring width has a predetermined width. The ring-shaped and polygonal structure of the electrode disc 200, and the predetermined length of the side length and the ring width, ensure the distribution and strength of the electromagnetic field.

[0041] Further, in this specific embodiment, the plurality of electrode discs 200 have a predetermined overlapping electromagnetic field area, and the electromagnetic field distribution can be accurately controlled by adjusting the number and position of the electrode discs 200. Two polygonal electrode discs 200 are arranged in parallel, and one side is in a parallel state. By adjusting the length of the parallel adjacent side and the width of the coil of the adjacent side, the size of the coil electromagnetic field overlapping area can be accurately adjusted, so as to effectively control the range of the central area with a strong magnetic field.

[0042] In a specific embodiment, the electrode discs 200 on the first electrode disc 200 are coaxially arranged, and the electrode discs 200 on the second electrode disc 200 are coaxially arranged. After being stacked, the focusing of the entire electrode disc 200 can be improved. The coaxial arrangement of each stacked electrode disc 200 ensures the consistency of the electric field distribution in each electrode disc 200. Under the same radius of coil winding, the shape and size of the coil remain consistent, and the generated electric field distribution is also relatively consistent, which means that the electric field in the space around the coil will be distributed in a more uniform and predictable manner. The electric field strength of the electrode disc 200 is predictable. According to Maxwell's electromagnetic field theory, when the current in the coil changes, a changing magnetic field will be generated around it, which in turn generates an electric field.

[0043] In a specific embodiment, it further comprises a positive electrode disc 110 and a negative electrode disc 120. The positive electrode disc 110 is a plate-shaped, annular structure, provided with a gap along the circumferential direction perpendicular to the positive electrode disc 110, and the surface of the middle position of the positive electrode disc 110 is coated with an insulating coating. One end is the positive input end, and the other end is the positive output end. The positive electrode disc 110 is arranged on the top of the plurality of electrode discs 200 on the first electrode disc 200. The positive input end is suitable for electrically connecting the positive electrode of the power supply, and the positive output end abuts the input end of the electrode disc 200 above. The negative electrode disc 120 is a plate-shaped, annular structure, provided with a gap along the circumferential direction perpendicular to the negative electrode disc 120, and the surface of the middle position of the negative electrode disc 120 is coated with an insulating coating. One end is the negative input end, and the other end is the negative output end. The negative electrode disc 120 is arranged on the top of the plurality of electrode discs 200 on the second electrode disc 200. The negative input end abuts the output end of the electrode disc 200 above, and the negative output end is suitable for electrically connecting the negative electrode of the power supply.

[0044] Specifically, the positive electrode disc 110 cooperates with the two connecting electrode discs 300 to fixedly install a plurality of electrode discs 200, and the negative electrode disc 120 cooperates with the two connecting electrode discs 300 to fixedly install a plurality of electrode discs 200. The number of electrode discs 200 fixedly installed by the negative electrode disc 120 and the positive electrode disc 110 is equal, and the thickness of the electrode disc 200 is the same, so that the generated electromagnetic field is more stable.

[0045] In a specific embodiment, the electrode disc 200 adopts a double-sided conduction design, and both sides are provided with conductive areas for the seamless flow of current and connection with other electrode discs. The positive electrode disc 110 is provided with a conductive area on one side for connection with the double-sided electrode disc, and a wiring end on the other side. The negative electrode disc 120 is opposite to the positive electrode disc 110, and a conductive area on one side is connected with the double-sided electrode disc, and the other end is a wiring end. In addition, one side of the secondary connecting disc is provided with a conductive area, which is connected with the double-sided electrode disc and also serves to fix and adjust the distance between the coils on the left and right sides. The shape of each electrode disc adopts a special polygonal ring design. The exposed non-insulated areas on the front and back of the electrode disc 200 are used as current conduction paths.

[0046] In a specific embodiment, a plurality of electrode discs 200 are bolted with the secondary connecting disc 300. Specifically, bolt mounting holes are provided on the positive electrode disc 110, the electrode disc 200, the negative electrode disc 120, and the secondary connecting disc 300, and the number of bolt mounting holes is multiple, which are arranged along the circumferential direction of the positive electrode disc 110, the electrode disc 200, the secondary connecting disc 300, and the negative electrode disc 120, respectively, and the distance between any two adjacent bolt mounting holes is equal. Furthermore, the positions of the bolt mounting holes on the electrode disc 200 are related to the stacking of the electrode disc 200. The bolt mounting holes can be provided on the plurality of electrode discs 200 after the plurality of electrode discs 200 are staggered and stacked, so that the plurality of stacked electrode discs 200 still form a spiral current loop after being fixed.

[0047] In a specific embodiment, the position of the electrode disc 200 without an insulating coating is provided with an opening, i.e., the two ends of the electrode disc 200 in the circumferential direction are output ends and input ends, respectively, and the opening is located between the output end and the input end of the electrode disc 200, so that the electrode disc 200 is not a continuous ring.

[0048] Further, in this specific embodiment, the current loop of the plurality of electrode discs 200 on the first electrode disc 200 is in a spiral structure, the current loop of the plurality of electrode discs 200 on the second electrode disc 200 is in a spiral structure, the output end of the upper electrode disc 200 is connected with the input end of the lower electrode disc 200, and they are staggered and arranged in a spiral manner, so that the current path of the plurality of electrode discs 200 under the positive electrode disc 110 is in a spiral shape. The input end of the upper electrode disc 200 under the negative electrode disc 120 is in abutment and electrical connection with the output end of the lower electrode disc 200, and is used for electrical conduction.

[0049] In a specific embodiment, the plate surface of the positive electrode disc 110, the electrode disc 200, the two connecting electrode disc 300 and the negative electrode disc 120 is provided with a heat dissipation hole, and the heat dissipation holes on the positive electrode disc 110, the electrode disc 200, the two connecting electrode disc 300 and the negative electrode disc 120 are sequentially communicated. Among them, when the positive electrode disc 110 and the plurality of electrode discs 200, two connecting electrode discs 300, and the negative electrode disc 120 and the plurality of electrode discs 200, two connecting electrode discs 300 are assembled, the heat dissipation holes on the positive electrode disc 110, the plurality of electrode discs 200 and the negative electrode disc 120 can form a continuous heat dissipation channel. When the transcranial magnetic coil is soaked in the cooling liquid, the cooling liquid can pass through the continuous heat dissipation channel to exchange heat with the positive electrode disc 110, the plurality of electrode discs 200 and the negative electrode disc 120.

[0050] In a specific embodiment, the electrode disc 200 has a preset cross-sectional diameter, and different diameters or different cross-sectional areas of the electrode disc 200 can be replaced according to different uses. By adjusting the length of this parallel adjacent side, the size of the coil electromagnetic field overlapping area can be accurately adjusted, so as to effectively control the range of the central region where a strong magnetic field is generated.

[0051] In a specific embodiment, the material of the electrode disc 200 is red copper, and the insulating coating is a Teflon insulating coating.

[0052] The above has described the embodiments of the present application, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles, practical application or improvement of technology in the market of the embodiments, or to enable other ordinary skilled persons in the art to understand the embodiments disclosed herein.

Claims

1. A polygonal coil with adjustable central high field region, characterized in that, The utility model relates to a kind of electrode plate and two continuous electrode plate, including: Multiple electrode discs capable of conducting electricity and two continuous electrode plates; The electrode disc is plate-like, multi-edge ring structure, surface is coated with preset length insulating coating along the circumferential direction, the electrode disc is adjacent to the input end of the insulating coating, the other end is output end, multiple electrode disc is stacked, the output end of the electrode disc above is electrically connected with the input end of the electrode disc below, forms a closed power loop; The two continuous electrode plate is "8" type structure, including first electrode disc and second electrode disc, the first electrode disc and the second electrode disc are plate-like, multi-edge ring structure, the output end of the first electrode disc is electrically connected with the output end of the second electrode disc, and multiple stacked electrode discs are arranged on the first electrode disc, the output end of the electrode disc below is connected with the input end of the first electrode disc, multiple stacked electrode discs are arranged on the second electrode disc, the input end of the electrode disc below is connected with the output end of the first electrode disc, the input end of the electrode disc above on the first electrode disc is suitable for connecting power positive, the output end of the electrode disc above on the second electrode disc is suitable for connecting power negative.

2. The polygonal coil with adjustable central high field region according to claim 1, wherein, The electrode disc is ring, polygon structure, and the side length of the electrode disc has preset length, ring width has preset width; Multiple electrode discs have preset overlapping electromagnetic field region.

3. The polygonal coil with adjustable central high field region of claim 1, wherein, The electrode disc on the first electrode disc is coaxially arranged; The electrode disc on the second electrode disc is coaxially arranged.

4. The polygonal coil with adjustable central high field region according to any one of claims 1-3, characterized in that, Also including: Positive disc and negative disc; The positive disc is plate-like, ring structure, is provided with notch along the circumferential direction perpendicular to the positive disc, and the surface of the middle position of the positive disc is coated with insulating coating, one end is positive input end, the other end is positive output end, and the positive disc is arranged on the top of multiple electrode discs on the first electrode disc, the positive input end is suitable for electrically connecting power positive, the positive output end is in abutment with the input end of the electrode disc above, The negative disc is plate-like, ring structure, is provided with notch along the circumferential direction perpendicular to the negative disc, and the surface of the middle position of the negative disc is coated with insulating coating, one end is negative input end, the other end is negative output end, the negative disc is arranged on the top of multiple electrode discs on the second electrode disc, the negative input end is in abutment with the output end of the electrode disc above, and the negative output end is suitable for electrically connecting power negative.

5. The polygonal coil with adjustable central high field region of claim 4, wherein, Multiple electrode discs are bolted with the two continuous electrode plate.

6. The polygonal coil with adjustable central high field region of claim 4, wherein, The position of the electrode disc which is not coated with insulating coating is provided with notch.

7. The polygonal coil with adjustable central high field region of claim 6, wherein, The power loop of multiple electrode discs on the first electrode disc is spiral structure; The power loop of multiple electrode discs on the second electrode disc is spiral structure.

8. The polygonal coil with adjustable central high field region of claim 4, wherein, The board surface of the positive disc, the electrode disc, the two continuous electrode plate and the negative disc is provided with heat dissipation hole, and the heat dissipation hole arranged on the positive disc, the electrode disc, the two continuous electrode plate and the negative disc is sequentially communicated.

9. The polygonal coil with adjustable central high field region of claim 1, wherein, The electrode disc has a preset cross-sectional diameter.

10. The polygonal coil with adjustable central high field region of claim 1, wherein, The electrode disc is made of red copper, and the insulating coating is a Teflon insulating coating.

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