Cooling device of stimulation unit of electromagnetic stimulation device

Abstract

The utility model provides a cooling device of a stimulation unit of electromagnetic stimulation equipment, the stimulation unit is provided with a coil group, the cooling device comprises a shell, the shell is provided with a containing space for containing the coil group and a flexible bag body, the shell comprises a front cover, the front cover is of a disc-shaped structure, the coil group is fixed on one side of the front cover through pouring sealant, and the flexible bag body is arranged on the front cover. Wherein the periphery of the front cover is provided with a plurality of first fixing parts; the rear cover is of a cover body structure and is provided with a bottom and an annular side part, and the end edge of the annular side part is provided with a plurality of second fixing parts corresponding to the first fixing parts, so that the first fixing parts and the second fixing parts are fixedly arranged; and the flexible bag body is filled with a cooling liquid. After the rear cover and the front cover are assembled, the flexible bag body has a heat convection or heat conduction cooling effect on the coil assembly.

Description

Technical Field

[0001] The utility model is related to the cooling field, and in particular to a cooling device suitable for a stimulation unit of an electromagnetic stimulation device, whereby the stimulation unit of the electromagnetic stimulation device can be provided with a rapid replacement of a cooling source so as to maintain a temperature that the user can bear when repeatedly performing stimulation improvement. Furthermore, the relatively expensive heat source coil is packaged as a whole with the cover body, thereby preventing collision damage when the heat source is separated and replaced. Background Art

[0002] The stimulation signal emitted by the nerve can be regarded as an electrical signal, which is used to stimulate various parts (such as organs, tissues, muscles, etc.) to make the corresponding parts produce corresponding actions or interference. Nowadays, devices that use alternating magnetic fields to simulate electrical signals to affect various parts of the body are usually called electromagnetic stimulation devices. For example, transcranial magnetic stimulators (TMS) belong to this category. Such devices are mainly used to study nerve functions, treat mental illnesses, etc. Common system component block diagrams are shown below. Figure 1 As shown, all parts except the external power supply 101 can be regarded as the component assembly of the electromagnetic stimulation device. In practice, the external power supply 101 usually provides power to the voltage supply unit 102 with the specifications of AC 110V or AC 220V. The voltage supply unit 102 is used to rectify and filter the alternating current provided by the external power supply 101, and further convert it into the rated voltage and current of the control unit 103 to supply the control unit 103 to make it operate normally; in addition, the alternating current provided by the external power supply 101 is rectified and filtered and converted into the rated voltage and current of the electromagnetic stimulation device to supply the energy storage unit 104 for energy storage. When the control unit 103 wants to generate stimulation, it controls the current switch 105 to turn on and connect the energy storage unit 104 and the stimulation unit 106 to discharge the stimulation unit 106 and generate a magnetic field and heat. The general structure of the stimulation unit 106 is mostly a three-dimensional coil wound with a copper coil. Its function in the device is to generate a magnetic field through an alternating current to serve as the stimulation end of the electromagnetic stimulation device, that is, the main generating point of the magnetic field and heat to affect the nearby organism.

[0003] Existing electromagnetic stimulation devices require extremely high voltages to generate high current changes, and then generate a large range of magnetic fields at the coil used for stimulation, so as to effectively stimulate the brain or nerves. If the stimulation threshold is expected to be reached, the voltage must be at least 300 volts, depending on the depth of the stimulation target and the nerve condition. The commonly used voltage often exceeds 1,000 volts. In addition, there are restrictions on the operating frequency. Generally speaking, the stimulation frequency range for the human body is about 0.5-50Hz, and it operates continuously for more than 10 minutes. When the system operates under this condition, the coil will continue to generate heat, causing the temperature to continue to rise. At the same time, under normal conditions, the surface temperature of the coil will exceed the acceptable range of the human body within 30 seconds, and exceed 100 degrees Celsius in about 5 minutes. The effective distance of the magnetic field is very short, and it is usually used close to the skin. Therefore, this will cause the coil temperature to rise to a body temperature that the user cannot bear or feel uncomfortable.

[0004] In this regard, there have been various cooling methods to improve the above-mentioned deficiencies, including: (i) reducing coil resistance. Considering that resistance directly affects heat generation, reducing resistance can effectively delay temperature rise. However, this will also lead to problems such as reduced magnetic field efficiency, loss of focus in the stimulation range, and excessive weight. (ii) reducing intensity or frequency. Using the principle that reducing the amount of current flowing is equivalent to reducing heat generation as a cooling method, but it will also directly reduce the stimulation effect. (iii) heat-resistant type. Adding a medium between the coil and the skin to reduce the speed of heat conduction. However, since the distance between the coil and the organism directly affects the effect, it needs to be close to the skin, and the heat-resistant material that can be used cannot be too thick, resulting in poor effect. (iv) replacement type. Directly remove the overheated coil and replace it with a new one. Because the coil is a component that passes through high voltage and high current and generates high heat, the installation protection is particularly high. During the process, professional units are required to properly handle its removal and bear the price of multiple coils. (v) air cooling type. The heat is removed by blowing air to the coil. However, because its temperature rises very quickly, a strong air volume is required to work. In addition, the fan cannot be installed directly near the coil due to the interference of the coil magnetic field, and the wind must be directed to the coil from somewhere else to dissipate the heat, which causes a lot of wind noise and motor noise, indirectly causing discomfort to the object. (VI) Liquid circulation cooling type, by flowing coolant through the coil to take away the heat, this approach can indeed solve the problem of coil overheating. However, the disadvantage is that immersing the conductive coil in liquid increases the risk and difficulty of maintenance, and the volume, weight and cost of the entire system will also increase accordingly.

[0005] In view of the problem that when the electromagnetic stimulation device passes through the alternating current, the temperature of the stimulation unit, i.e. the coil, will gradually rise, causing discomfort to nearby organisms and making it impossible to continue using it. The existing cooling methods such as increasing the base material, reducing efficiency, dielectric heat resistance, replacing the heat source, air cooling, and liquid cooling also have corresponding problems. At present, there is no better solution except tolerating the shortcomings of liquid cooling. To this day, medical institutions that have not purchased high-end liquid cooling versions have to constantly face this difficult problem. If a dedicated air cooling machine is used, patients will have to face noise interference that is louder than a vacuum cleaner, affecting the quality of medical treatment. In addition, some doctors use the coil replacement method for the sake of patients. However, since the electromagnetic stimulation device is a high-voltage device, the replacement procedure is complicated and leads to treatment interruptions and other defects, and the process is more likely to cause the connector to burn due to poor contact. Since a set of coils is expensive, medical institutions cannot always have too many replacement coils. As a result, doctors today have to prepare ice buckets to cool the coils at any time during treatment. In addition, the maintenance and price of liquid cooling are also one of the main reasons why electromagnetic stimulation devices cannot be used at home. Therefore, a simple and cheap coil cooling method is a necessary improvement for improving the current medical situation and popularizing electromagnetic stimulation equipment. Therefore, the utility model conceives and proposes a cooling device for the stimulation unit of the electromagnetic stimulation device to improve the various deficiencies derived from the existing practice, so that users can repeatedly perform electromagnetic stimulation on the human body surface. Utility Model Content

[0006] One purpose of the present utility model is to provide a cooling device specifically for a stimulation unit of an electromagnetic stimulation device, that is, for a coil group serving as a stimulation unit, after repeatedly performing stimulation actions in a short period of time, it can still maintain a temperature acceptable to the user's body to facilitate implementation, and the heat source and the cover body are modularly designed, thereby allowing the corresponding objects to be replaced quickly and safely.

[0007] To achieve the above-mentioned purpose, the utility model provides a cooling device for a stimulation unit of an electromagnetic stimulation device, wherein the stimulation unit has a coil group, comprising: a shell having an accommodation space inside and an opening, wherein the accommodation space is used to accommodate the coil group, and the opening is used to allow a plurality of power wirings electrically connected to the coil group to pass through, comprising: a front cover, which is a sheet-like structure and the coil group is fixed to one side of the front cover, wherein the periphery of the front cover is provided with a plurality of first fixing parts, wherein the front cover and the coil group are sealed with a potting glue The front cover and the rear cover are fixed as a whole; and a rear cover is a cover structure having a bottom and a ring side, and the end edge of the ring side is provided with a plurality of second fixing parts relative to the plurality of first fixing parts, so that the plurality of first fixing parts are fixed to each other corresponding to the second fixing parts, and the accommodating space is formed between the front cover and the rear cover; and a flexible bag body is provided in the accommodating space and is equipped with a cooling liquid; wherein, after the rear cover and the front cover are installed, the flexible bag body has a cooling effect of heat convection or heat conduction on the coil group.

[0008] Preferably, the rear cover and the flexible bag body are fixed as a whole.

[0009] Preferably, the bottom of the rear cover has a pushing portion, and the pushing portion has a ring edge and a pushing piece embedded in the ring edge and pivotally mounted with the ring edge. When the pushing piece is rotated clockwise or counterclockwise by an external force, the pushing piece moves closer to or away from the front cover to change the size of the accommodating space, so as to move all or part of the flexible bag body accordingly and thereby adjust the cooling efficiency of the flexible bag body on the coil group.

[0010] Preferably, the first fixing portion and the second fixing portion are magnetic adsorption structures.

[0011] Preferably, the coolant is water, or a non-metallic liquid with a permeability lower than 1*10^-5 Henrys / meter (H / m) and a specific heat capacity greater than 1,000 joules / (kg*K).

[0012] Preferably, the flexible bag directly contacts the coil assembly; or indirectly contacts the coil assembly and the distance is less than 1 cm.

[0013] In summary, the cooling device proposed by the utility model for the stimulation unit of the electromagnetic stimulation device utilizes a front and rear cover combination mechanism that is easy to assemble and disassemble, and the heat source and the front cover are modularly designed for easy replacement, so that the coil group that generates the corresponding heat source during the operation of magnetic stimulation can be quickly enclosed inside, and the flexible bag with cooling function and the covering distance and state of the coil group can be adjusted by a special rear cover position pushing piece in a rotational movement manner, thereby achieving the effect of rapid heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a block diagram of the components of the electromagnetic stimulation device that implements cooling corresponding to the cooling device of the utility model.

[0015] Figure 2 It is a schematic diagram of the combination of the cooling device of the utility model.

[0016] Figure 3 It is an exploded schematic diagram of the cooling device of the utility model.

[0017] Figure 4 This is a schematic diagram of the coil assembly of the utility model being fixed to the front cover.

[0018] Figure 5 This is a schematic diagram of the flexible bag body of the utility model being placed inside the back cover.

[0019] Figure 6It is a schematic diagram of the front and back sides of the cooling device of the utility model.

[0020] Figure 7 It is a schematic diagram of the withdrawal pushing member of the utility model.

[0021] Figure 8 It is a schematic diagram of the propulsion and pushing member of the utility model.

[0022] Explanation of the reference numerals: 101 - external power supply; 102 - voltage supply unit; 103 - control unit; 104 - energy storage unit; 105 - current switch; 106 - stimulation unit; 2 - shell; 20 - accommodating space; 21 - opening; 22 - front cover; 220 - first fixing part; 23 - rear cover; 230 - second fixing part; 231 - bottom; 232 - side of the ring; 233 - pushing part; 2330 - edge of the ring; 2331 - pushing piece; 3 - flexible bag body; 31 - cooling liquid; 8 - power connection; 9 - coil assembly. DETAILED DESCRIPTION

[0023] In order to enable a person skilled in the art with general knowledge in the art to clearly understand the contents of the present invention, the following description is provided with reference to the drawings.

[0024] See also Figure 2 to Figure 8 , which are respectively a schematic diagram of the combination of the preferred embodiment of the utility model, a schematic diagram of the decomposition, a schematic diagram of the coil group fixed to the front cover, a schematic diagram of the flexible bag body placed in the rear cover, a schematic diagram of the front and back sides of the cooling device, and a schematic diagram of the withdrawal and advancement of the pushing member. From the figure, the utility model provides a cooling device for the stimulation unit of an electromagnetic stimulation device, and the stimulation unit is a coil group 9, for example, wound with copper wire or aluminum wire, and the appearance can be one of the shapes of O, 8, sun, H, spiral, vortex, butterfly, spring or lucky clover. The cooling device includes: a shell 2 and a flexible bag body 3. The shell 2 has an accommodating space 20 and an opening 21 therein, wherein the accommodating space 20 is used to accommodate the coil assembly 9 and the flexible bag body 3, and the flexible bag body 3 can be made of polyethylene material and equipped with a coolant 31, wherein the coolant 31 can be water, or a non-metallic liquid with a magnetic permeability lower than 1*10^-5 Henrys / meter (H / m) and a specific heat capacity greater than 1,000 joules / (kg*K), and the opening 21 is for a plurality of power wirings 8 electrically connected to the coil assembly 9 to pass through. Furthermore, the shell 2 includes a front cover 22 and a rear cover 23 that are easy to assemble. The front cover 22 is a disc-shaped structure and the coil assembly 9 is fixed to one side of the front cover 22. Furthermore, the front cover 22 and the coil assembly 9 are fixed as a whole with a potting glue, such as Figure 4As shown. Accordingly, the front cover 22 and the coil assembly 9 can be combined into a concept of a heat source module, especially when the appearance of the coil assembly 9 is not easy to replace, it can avoid collision damage caused by replacing the coil assembly 9 alone. When the rear cover 23 and the front cover 22 are installed, the flexible bag body 3 has a cooling effect of heat convection or heat conduction on the coil assembly 9. In order to enhance the convenience of replacing the cooling source, the rear cover 23 and the flexible bag body 3 can be fixed as a whole, that is, when the rear cover 23 is removed, the flexible bag body 3 will be removed simultaneously.

[0025] In addition, in order to enhance the convenience of disassembly and assembly, the front cover 22 is provided with a plurality of first fixing portions 220 on the periphery; and the rear cover 23 is a cover structure and has a bottom 231 and a ring side portion 232, and the end edge of the ring side portion 232 is provided with a plurality of second fixing portions 230 relative to the plurality of first fixing portions 220, so that the plurality of first fixing portions 220 are fixed to each other corresponding to the number and position of the second fixing portions 230, thereby forming the accommodating space 20 between the front cover 22 and the rear cover 23. In other words, the first fixing portion 220 and the second fixing portion 230 are arranged opposite to each other so that the front cover 22 and the rear cover 23 can be quickly combined and disassembled. For example, the first fixing portion 220 and the second fixing portion 230 are arranged with a magnetic adsorption structure or a tenon structure, so that the front cover 22 and the rear cover 23 can be quickly and conveniently disassembled. In this way, when the cooling liquid 31 in the flexible bag body 3 obviously loses its cooling effect, the housing 2 that is convenient to disassemble can be quickly replaced. Accordingly, when the rear cover 23 and the front cover 2 are installed, the flexible bag body 3 can provide a cooling effect of heat convection or heat conduction on the coil assembly 9.

[0026] In addition, in order to control the flexible bag body 3 and the coil group 9 to present physical direct conduction or indirect convection heat dissipation, the pushing portion 233 has a ring edge 2330 and a pushing member 2331 embedded in the ring edge 2330 and pivoted with the ring edge 2330. When the pushing member 2331 is rotated clockwise or counterclockwise by an external force, the pushing member 2331 moves closer to or farther from the front cover 22 to change the size of the accommodating space 20, so as to move all or part of the flexible bag body 3 accordingly and adjust the cooling efficiency of the flexible bag body 3 on the coil group 9. The flexible bag body 3 is in direct contact with the coil group 9; or is close to the coil group 9 and the distance is less than 1 cm, so as to achieve better heat dissipation effect. During installation, according to Figure 7 As shown in FIG. 1 , first rotate the pushing member 2331 counterclockwise to exit, and then Figure 5 The flexible bag body 3 is disposed on one side of the rear cover 23, and the front cover 22 is magnetically connected to the rear cover 23 by using a magnet, for example. Figure 6 . And according to Figure 8As shown in the figure, the pushing member 2331 is rotated clockwise and pushed until resistance is felt. At this time, the flexible bag body 3 will be close to the coil group 9 and absorb heat when the coil group 9 generates heat. As for disassembly, the front cover 22 and the rear cover 23 are disassembled, and the flexible bag body 3 can be removed simultaneously. Of course, in order to enhance the overall function of the cooling device of the utility model, it is logical that a plurality of additional auxiliary sensing mechanisms can be externally or internally installed, such as corresponding sensors, transmitters or display units such as installation prompts, temperature prompts, and liquid leakage prompts. Since this part can be added through existing technology, it will not be described in detail here.

[0027] In summary, the utility model can allow the stimulation unit of the electromagnetic stimulation device to quickly replace the cooling source, so that the user can maintain a temperature that the body can bear when repeatedly performing stimulation improvement. The more expensive heat source coil is packaged as a whole with the cover body, so it will not be damaged by collision when the heat source is separated and replaced, and the pushing part can be used to move all or part of the flexible bag body accordingly to adjust the cooling efficiency of the flexible bag body on the coil group. Accordingly, the temperature of the coil group is transferred to the coolant in the flexible bag body by utilizing the principle that the coil group itself is easy to conduct heat and the coolant absorbs heat. Because the specific heat of the coolant is much greater than that of the coil group, it can store the heat energy of the coil group and delay the temperature rise. Although the cooling method of the utility model seems simple, it can solve many practical problems, including: (a) low cost and volume. (b) Even if the flexible bag body is not replaced, the temperature of the coil group can be maintained within the acceptable range for the human body for more than 30 minutes. (c) There is no problem of immersion in liquid. (d) There is no noise problem. (5) Because the flexible bag is installed on the back of the coil group, there is no problem of reducing strength or affecting stimulation. (6) It is easy to disassemble and has no connection with the circuit, so it can be used by ordinary people. (7) For low-intensity or short-term use, the flexible bag can be removed to achieve lightweight. In short, the utility model can maintain the low-temperature operation of the coil group while having the advantages of low volume, no impact on efficiency, easy maintenance, no noise, low cost, and low weight.

[0028] The above is only an explanation of the preferred embodiment in the claims of the present utility model, and the scope of the present utility model cannot be limited according to the content of this embodiment; therefore, any changes or modifications made to the meaning without departing from the equivalent scope of the present utility model should still be included in the protection scope of the present utility model.

Claims

1. A cooling device for a stimulation unit of an electromagnetic stimulation device, the stimulation unit having a coil assembly, characterized in that: Include: A housing has a housing space and an opening therein, wherein the housing space is used to accommodate the coil assembly, and the opening is used to pass through a plurality of power wirings electrically connected to the coil assembly, and the housing comprises: A front cover having a disc-shaped structure and the coil assembly is fixed to one side of the front cover, wherein a plurality of first fixing parts are arranged on the periphery of the front cover, wherein the front cover and the coil assembly are fixed as a whole by potting glue; and A rear cover is a cover structure having a bottom and a ring side portion, and the ring side portion has a plurality of second fixing portions at its end edge opposite to the plurality of first fixing portions, so that the plurality of first fixing portions are fixedly arranged with respect to the second fixing portions, and the accommodation space is formed between the front cover and the rear cover; and A flexible bag body is arranged in the accommodating space and is provided with a cooling liquid; wherein, after the rear cover and the front cover are installed, the flexible bag body has a cooling effect of heat convection or heat conduction on the coil assembly.

2. The cooling device of the stimulation unit of the electromagnetic stimulation device according to claim 1, characterized in that: The rear cover is fixed to the flexible bag body as a whole.

3. The cooling device of the stimulation unit of the electromagnetic stimulation device according to claim 1, characterized in that: The bottom of the rear cover has a pushing portion, and the pushing portion has a ring edge and a pushing piece embedded in the ring edge and pivoted with the ring edge, so that when the pushing piece is rotated clockwise or counterclockwise by an external force, the pushing piece moves closer to or away from the front cover to change the size of the accommodating space, so as to move all or part of the flexible bag body accordingly and thereby adjust the cooling efficiency of the flexible bag body on the coil group.

4. The cooling device of the stimulation unit of the electromagnetic stimulation device according to any one of claims 1 to 3, characterized in that: The first fixing portion and the second fixing portion are magnetic adsorption structures.

5. The cooling device of the stimulation unit of the electromagnetic stimulation device according to claim 4, characterized in that: The coolant is water, or a non-metallic liquid having a magnetic permeability lower than 1*10^-5 Henrys / meter (H / m) and a specific heat capacity greater than 1,000 joules / (kg*K).

6. The cooling device of the stimulation unit of the electromagnetic stimulation device according to claim 5, characterized in that: The flexible bag body directly contacts the coil group; or indirectly contacts the coil group with a distance less than 1 cm.

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