A coil assembly and medical device

Abstract

This utility model relates to the field of medical device technology, specifically to a coil assembly and a medical device. The coil assembly includes at least one insulating plate and a coil attached to the insulating plate with adhesive. Each insulating plate has multiple through holes and multiple serpentine holes, which are staggered. The serpentine holes are arranged radially from the center of the area where the coil is located on the insulating plate. This application combines multiple through holes with multiple serpentine holes, and the serpentine holes are arranged radially from the center of the area where the coil is located on the insulating plate. The serpentine holes, through their meandering path, increase the space for adhesive within the limited space of the insulating plate, providing sufficient adhesive capacity. Simultaneously, they can disperse stress, avoiding significant stress concentration caused by the presence of holes, and have minimal impact on the overall hardness and structural strength of the insulating plate, thus ensuring the mechanical properties of the coil assembly.

Description

Technical Field

[0001] This utility model relates to the field of medical equipment technology, and in particular to a coil assembly and a medical device. Background Technology

[0002] In the field of medical devices, coil assemblies are widely used in various devices, such as magnetic resonance imaging equipment and transcranial magnetic stimulation equipment. Their main function is to generate a magnetic field by passing an electric current, thereby achieving imaging, stimulation or other treatments on biological tissues.

[0003] The coil assembly consists of an insulating board and a coil attached to the insulating board. The manufacturing process involves applying a layer of adhesive to the insulating board, then attaching the coil to the board using the adhesive, followed by hot pressing to cure the adhesive, and finally rolling the insulating board to form an arc shape. To prevent uneven curing or clogging of the adhesive, through-holes and slotted holes are provided on the insulating board to accommodate the adhesive and allow it to flow during hot pressing. However, if the slotted holes are too wide or too long, it reduces the hardness of the epoxy board; if they are too narrow or too short, they cannot hold enough adhesive. Therefore, the current method involves multiple slotted holes, but the spacing between these holes cannot be too close, as this would reduce the hardness of the insulating board and affect the overall mechanical properties of the coil assembly.

[0004] Therefore, there is a need for a coil assembly that can guarantee the overall mechanical performance while providing sufficient space for glue. Utility Model Content

[0005] The technical problem to be solved by this utility model embodiment is to provide a coil assembly and medical device that can ensure the overall mechanical performance and provide sufficient space for glue.

[0006] This utility model discloses a coil assembly, including at least one insulating plate and a coil attached to the insulating plate by adhesive. Each insulating plate has multiple through holes and multiple serpentine holes, which are staggered and arranged radially from the center of the area on the insulating plate where the coil is located.

[0007] Optionally, the insulating plate is further provided with a plurality of strip holes, and the plurality of strip holes and the plurality of serpentine holes are arranged radially and alternately from the center of the area on the insulating plate where the coil is laid.

[0008] Optionally, the density of the plurality of through holes in the region near the serpentine hole is lower than the density in the region away from the serpentine hole.

[0009] Optionally, the insulating plate has two strip holes and two serpentine holes, which are arranged radially and alternately from the center of the area on the insulating plate where the coil is laid.

[0010] Optionally, the insulating plate has four serpentine holes, which are arranged radially from the center of the area on the insulating plate where the coil is laid out.

[0011] Optionally, the insulating plate has an arc-shaped structure, and a plurality of the serpentine holes are arranged in the non-apex area of ​​the arc-shaped structure.

[0012] Optionally, the coil assembly includes two insulating plates, each insulating plate having a coil attached thereto, the two insulating plates being spliced ​​together, and the two coils being connected in parallel.

[0013] Optionally, each of the insulating plates has a clearance hole at the center of the area where the coil is arranged. The coil assembly also includes a connecting wire. The coil is arranged on the front side of the insulating plate, and the connecting wire is arranged on the back side of the insulating plate with two clearance holes at each end, and connects the two coils.

[0014] Optionally, the insulating board is an epoxy board.

[0015] This utility model also discloses a medical device, including the coil assembly as described above.

[0016] Compared with the prior art, the beneficial effects of the coil assembly and medical device provided by this utility model embodiment are as follows: The coil assembly provided by this utility model embodiment includes at least one insulating plate and a coil. The coil is attached to the insulating plate with adhesive. By opening multiple through holes and multiple serpentine holes on each insulating plate, the multiple through holes and multiple serpentine holes are staggered. The multiple serpentine holes are arranged radially from the center of the area where the coil is placed on the insulating plate. The serpentine holes, through their tortuous direction, increase the space for accommodating adhesive within the limited space of the insulating plate, providing sufficient space for adhesive. Combined with multiple through holes, it effectively solves the problem of uneven distribution or clogging of adhesive during curing. At the same time, compared with straight strip holes, the design of serpentine holes and the radial arrangement can disperse stress and avoid significant stress concentration due to the presence of holes. It has less impact on the overall hardness and structural strength of the insulating plate, ensuring the overall mechanical properties of the coil assembly. Attached Figure Description

[0017] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0018] Figure 1This is a three-dimensional schematic diagram of the coil assembly provided in an embodiment of the present utility model;

[0019] Figure 2 for Figure 1 A three-dimensional schematic diagram of the coil assembly shown from another angle;

[0020] Figure 3 This is a three-dimensional schematic diagram of two insulating boards spliced ​​together according to an embodiment of the present invention.

[0021] The labels for the attached figures are as follows:

[0022] 110. Insulating board; 111. Through hole; 112. Serpentine hole; 113. Clearance hole; 120. Coil; 130. Connecting wire. Detailed Implementation

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0024] This utility model embodiment provides a coil assembly, such as Figures 1 to 3 As shown, the coil assembly includes at least one insulating plate 110 and a coil 120 attached to the insulating plate 110 by adhesive. Each insulating plate 110 has a plurality of through holes 111 and a plurality of serpentine holes 112. The plurality of through holes 111 and the plurality of serpentine holes 112 are staggered and arranged radially from the center of the area on the insulating plate 110 where the coil 120 is arranged.

[0025] The coil assembly provided in this embodiment of the utility model includes at least one insulating plate 110 and a coil 120. The coil 120 is attached to the insulating plate 110 with adhesive. Multiple through holes 111 and multiple serpentine holes 112 are formed on each insulating plate 110. The through holes 111 and the serpentine holes 112 are staggered. The serpentine holes 112 are arranged radially from the center of the area on the insulating plate 110 where the coil 120 is located. The serpentine holes 112, through their meandering direction, increase the space for accommodating adhesive within the limited space of the insulating plate 110. It provides sufficient space for adhesive to be contained, and in combination with multiple through holes 111, it effectively solves the problem of uneven distribution or clogging of adhesive during curing. It ensures that the adhesive can fully fill the gap between the coil 120 and the insulation board 110, improving the tightness of the fit. At the same time, compared with straight strip holes, the design of the serpentine holes 112 and the radial arrangement can disperse stress and avoid significant stress concentration due to the presence of holes. It has less impact on the overall hardness and structural strength of the insulation board 110, ensuring the overall mechanical properties of the coil assembly.

[0026] Among them, the multiple through holes 111 and serpentine holes 112 can also play a heat dissipation role during the hot pressing and curing process of the adhesive, so as to avoid the temperature of the insulation board 110 being too high and reduce the risk of deformation or breakage of the insulation board 110.

[0027] In an optional embodiment of this application, the insulating board 110 is an epoxy board. Epoxy boards possess high mechanical strength and hardness, enabling them to withstand significant mechanical stress. This high strength provides stable support when the coil 120 is installed, ensuring the structural stability of the coil 120 and preventing easy deformation or damage even under external forces or vibrations. Epoxy boards are also excellent insulating materials, possessing high dielectric properties, resistance to surface leakage and arcing, and good heat resistance, maintaining good mechanical and electrical properties even at high temperatures.

[0028] In an optional embodiment of this application, reference is made to Figure 3 The insulating plate 110 has four serpentine holes 112, which are arranged radially from the center of the area where the coil 120 is laid on the insulating plate 110.

[0029] By setting four serpentine holes 112 in a radial arrangement, stress can be evenly distributed from the center to the surrounding area. This, combined with multiple through holes 111, provides space for adhesive flowing in multiple directions, preventing adhesive from accumulating in localized areas and further reducing the risk of localized stress concentration. It also reduces the impact of the serpentine holes 112 on the mechanical properties of the insulation board 110, ensuring the overall mechanical properties of the coil assembly.

[0030] In an optional embodiment of this application, reference is made to Figure 1 and Figure 3 The density of multiple through holes 111 in the area near the serpentine hole 112 is lower than the density in the area far from the serpentine hole 112.

[0031] Specifically, in the area near the serpentine holes 112, the mechanical strength is relatively weak, and the arrangement of the through holes 111 is relatively sparse. This reduces the damage to the strength of the insulation board 110 in this area, which helps to improve the overall strength of the insulation board 110 in these areas, reduces the risk of cracks and breakage, and improves the mechanical properties of the insulation board 110 and the coil assembly. In the area away from the serpentine holes 112, the mechanical strength is higher, and the arrangement of the through holes 111 is relatively dense. While ensuring the mechanical strength of this part of the area, it can increase the space for glue to be contained, thus balancing the glue-containing capacity and structural strength of the epoxy board as a whole.

[0032] In an optional embodiment of this application, the insulating plate 110 is also provided with a plurality of strip holes (not shown in the figure), and the plurality of strip holes and a plurality of serpentine holes 112 are arranged radially and alternately from the center of the area on the insulating plate 110 where the coil 120 is laid.

[0033] The radially arranged strip-shaped and serpentine holes 112 help the adhesive to distribute evenly in all directions during the curing process, reducing problems caused by adhesive concentration, such as localized strength loss or poor adhesion of the coil 120. This helps the adhesive to evenly fill the entire coil 120 area, ensuring uniform distribution throughout the coil assembly and improving the bonding effect and stability of the coil 120. The alternating arrangement of strip-shaped and serpentine holes 112 helps to balance the adhesive capacity and structural strength of the epoxy board as a whole.

[0034] Optionally, the insulating plate 110 has two strip holes and two serpentine holes 112, which are arranged radially and alternately from the center of the area where the coil 120 is laid on the insulating plate 110.

[0035] Two strip-shaped holes and two serpentine holes 112 are arranged radially and alternately. With a smaller number of holes, sufficient glue-accommodating space is provided while ensuring the mechanical properties of the insulating board 110. The glue-accommodating capacity and structural strength of the epoxy board are balanced as a whole.

[0036] In an optional embodiment of this application, reference is made to Figure 1 and Figure 2 The insulating board 110 has an arc-shaped structure, and multiple serpentine holes 112 are arranged in the non-arc top area of ​​the arc-shaped structure.

[0037] Specifically, the non-apex area of ​​the arc-shaped structure is usually the part with higher structural strength. Arranging the serpentine holes 112 in the non-apex area of ​​the arc-shaped structure can optimize the overall mechanical properties. This design can improve the strength of the insulating plate 110 and improve stress distribution, preventing the insulating plate 110 from breaking during the roll forming process. Furthermore, since the coil 120 generates a magnetic field when energized, when used in medical devices, after the coil 120 is attached to the insulating plate 110, the arc-shaped insulating plate 110 can surround and cover the outer periphery of the human body, better matching the shape of the human body and making the magnetic field distribution more uniform.

[0038] In an optional embodiment of this application, reference is made to Figures 1 to 3 The coil assembly includes two insulating plates 110, with a coil 120 attached to each insulating plate 110. The two insulating plates 110 are spliced ​​together, and the two coils 120 are connected in parallel.

[0039] Two insulating plates 110 are spliced ​​together, and the coils 120 on the insulating plates 110 are connected in parallel. The resulting coil assembly has a large size, can cover a larger area, and has a larger magnetic field influence range.

[0040] Optional, see reference Figures 1 to 3 Each insulating plate 110 has a clearance hole 113 at the center of the area where the coil 120 is laid. The coil assembly also includes a connecting wire 130. The coil 120 is disposed on the front side of the insulating plate 110, and the connecting wire 130 is disposed on the back side of the insulating plate 110 with two clearance holes 113 at each end, and connects the two coils 120.

[0041] By creating clearance holes 113 in the insulating plate 110, the connecting wire 130 can pass through from the back, while the coil 120 remains on the front, without affecting the fit between the coil 120 and the insulating plate 110. This ensures a tight bond between the coil 120 and the insulating plate 110, preventing the coil 120 from bulging outwards or becoming unstable due to the presence of the connecting wire 130. This design not only improves the stability of the coil 120's fit on the insulating plate 110 but also simplifies the manufacturing process. The arrangement of the connecting wire 130 makes the assembly of the coil assembly simpler and more efficient, preventing short circuits in the coil 120.

[0042] This utility model embodiment also provides a medical device, which includes the coil assembly as described above.

[0043] This medical device includes the same structure and beneficial effects as the coil assembly in the foregoing embodiments. The structure and beneficial effects of the coil assembly have been described in detail in the foregoing embodiments and will not be repeated here.

[0044] It should be understood that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Those skilled in the art can modify the technical solutions described in the above embodiments, or make equivalent substitutions for some of the technical features; and all such modifications and substitutions should fall within the protection scope of the appended claims of this utility model.

Claims

1. A coil assembly, characterized in that, It includes at least one insulating plate and a coil attached to the insulating plate by adhesive. Each insulating plate has multiple through holes and multiple serpentine holes. The multiple through holes and multiple serpentine holes are staggered and arranged radially from the center of the area on the insulating plate where the coil is placed.

2. The coil assembly according to claim 1, characterized in that, The insulating plate is also provided with multiple strip holes, and the multiple strip holes and multiple serpentine holes are arranged radially and alternately from the center of the area on the insulating plate where the coil is laid.

3. The coil assembly according to claim 1, characterized in that, The density of the multiple through holes in the region near the serpentine hole is lower than the density in the region away from the serpentine hole.

4. The coil assembly according to claim 2, characterized in that, The insulating plate has two strip holes and two serpentine holes, which are arranged radially and alternately from the center of the area on the insulating plate where the coil is laid.

5. The coil assembly according to claim 1, characterized in that, The insulating plate has four serpentine holes, which are arranged radially from the center of the area on the insulating plate where the coil is laid out.

6. The coil assembly according to claim 1, characterized in that, The insulating plate has an arc-shaped structure, and multiple serpentine holes are arranged in the non-apex area of ​​the arc-shaped structure.

7. The coil assembly according to claim 1, characterized in that, The coil assembly includes two insulating plates, each of which has a coil attached to it. The two insulating plates are spliced ​​together, and the two coils are connected in parallel.

8. The coil assembly according to claim 6, characterized in that, Each insulating plate has a clearance hole at the center of the area where the coil is arranged. The coil assembly also includes a connecting wire. The coil is arranged on the front side of the insulating plate, and the connecting wire is arranged on the back side of the insulating plate with two clearance holes at each end, and connects the two coils.

9. The coil assembly according to any one of claims 1-8, characterized in that, The insulating board is an epoxy board.

10. A medical device, characterized in that, Includes the coil assembly as described in any one of claims 1-9.

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