CN113077958A - Heat dissipation type electromagnetic coil device and electromagnetic physiotherapy equipment thereof - Google Patents
Heat dissipation type electromagnetic coil device and electromagnetic physiotherapy equipment thereof Download PDFInfo
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- CN113077958A CN113077958A CN202110316769.4A CN202110316769A CN113077958A CN 113077958 A CN113077958 A CN 113077958A CN 202110316769 A CN202110316769 A CN 202110316769A CN 113077958 A CN113077958 A CN 113077958A
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- 230000017525 heat dissipation Effects 0.000 title claims abstract description 122
- 238000000554 physical therapy Methods 0.000 title claims abstract description 33
- 238000001816 cooling Methods 0.000 claims description 29
- 239000002356 single layer Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 17
- 239000010410 layer Substances 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 230000005855 radiation Effects 0.000 description 5
- 239000002918 waste heat Substances 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000005347 demagnetization Effects 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000003313 weakening effect Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/20—Electromagnets; Actuators including electromagnets without armatures
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N2/00—Magnetotherapy
- A61N2/02—Magnetotherapy using magnetic fields produced by coils, including single turn loops or electromagnets
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Animal Behavior & Ethology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Radiology & Medical Imaging (AREA)
- General Health & Medical Sciences (AREA)
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- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Biomedical Technology (AREA)
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- Magnetic Treatment Devices (AREA)
Abstract
The invention discloses a heat dissipation type electromagnetic coil device and electromagnetic physiotherapy equipment thereof. The invention aims to solve the problems of poor heat dissipation, temperature rise and insufficient magnetic field intensity caused by excessive heat transfer of the coil to the magnetic core of the existing electromagnetic coil device.
Description
Technical Field
The invention belongs to the field of medical health care instruments, and particularly relates to a heat dissipation type electromagnetic coil device and electromagnetic physiotherapy equipment thereof.
Background
At present, a known electromagnetic coil device is composed of a bobbin, a coil, and a core. When the electromagnetic physiotherapy equipment carries out physiotherapy to the human body, in order to strengthen the physiotherapy effect, the general solenoid device can be close to the human body as far as possible to make the magnetic field that solenoid produced produce the biggest efficiency to the human body. But because can produce the heat when solenoid circular telegram, when carrying out the physiotherapy to the human body for a long time, the produced heat of solenoid can conduct to the magnetic core, and makes the magnetic core temperature rise, if solenoid carries out the physiotherapy to the human body this moment, the higher magnetic core of temperature both can cause discomfort or injury to the human body. Meanwhile, as the heat of the coil cannot be timely dissipated, the temperature of the coil rises, the resistance of a wire in the coil is increased, and the intensity of a magnetic field generated by the coil is seriously influenced.
Furthermore, if the temperature of the core is increased, thermal demagnetization will occur. The magnetic field intensity of the magnetic core is weakened, so that the generation of a strong magnetic field is not facilitated, and the physical therapy effect is reduced. In addition, the magnetic core of the existing physical therapy instrument is a whole piece of iron, the generated magnetic field intensity is small, the magnetic field intensity does not reach more than 4000 gausses, and the shape and layout design relationship with the magnetic core is very large.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, the present invention is directed to solve the problems of poor heat dissipation, insufficient magnetic field strength and short service life of the conventional electromagnetic coil device and the electromagnetic physiotherapy apparatus thereof.
This patent scheme provides heat dissipation type solenoid device, includes: the coil is wound on the side face of the framework, a magnetic core consisting of a plurality of magnetic needles arranged in a bundle shape is arranged in the hollow portion of the framework, a plurality of heat dissipation holes are formed between the hollow portion and the side face of the framework, and cooling air passes through the heat dissipation holes.
Furthermore, a plurality of heat dissipation holes are arranged around the supporting wall of the framework at equal intervals.
Furthermore, a plurality of heat dissipation holes surround the support wall of the framework, and the heat dissipation and ventilation effects are better.
Further, the heat dissipation holes extend along the axial direction of the hollow portion of the framework and penetrate through the upper end portion and the lower end portion of the support wall.
Furthermore, the upper part of the magnetic needle is in a cone shape or a multi-pyramid shape, and the length of each magnetic needle is 2-22 cm, and the diameter of each magnetic needle is 0.5-3 cm.
The heat dissipating electromagnetic coil device according to claim 1, wherein the heat dissipating hole has a circular arc-shaped cross section.
The present invention also provides a heat dissipation type electromagnetic physiotherapy apparatus, comprising: in the heat dissipation type electromagnetic coil device, the coil of the heat dissipation type electromagnetic coil device is connected with the pulse control circuit, the lower part of the magnetic needle of the heat dissipation type electromagnetic coil device is inserted into the heat dissipation box, and the heat dissipation box is provided with the cooling device, so that the heat dissipation and conduction effects are improved.
Furthermore, a heat dissipation structure consisting of a plurality of heat dissipation fins arranged in parallel is arranged at the bottom in the heat dissipation box; the lower part of the magnetic needle is inserted into the heat dissipation structure; the heat dissipation box is provided with an air inlet and an air outlet, the cooling device is an air cooling machine, and the air cooling machine is arranged at the air inlet or the air outlet and used for pushing cooling air to enter the heat dissipation box from the air inlet and flow through the heat dissipation type electromagnetic coil device and the heat dissipation holes of the heat dissipation type electromagnetic coil device.
Further, the heat dissipation type electromagnetic physiotherapy equipment is a seat type electromagnetic physiotherapy device.
Furthermore, a plurality of the heat dissipation type electromagnetic physiotherapy equipment are connected and combined together to form the bed type electromagnetic physiotherapy equipment.
The improvement of this patent brings the following advantage:
(1) the electromagnetic coil device is also provided with a plurality of heat dissipation holes on the supporting wall of the framework, the heat dissipation holes greatly increase the contact area between the framework and the outside air, and the cold air can be more fully in direct contact with the framework, so that the cooling efficiency of the coil and the magnetic core is greatly increased. Therefore, the temperature of the coil wire is kept at a lower level, the thermal resistance effect is inhibited, the generation of a strong magnetic field is facilitated, and the physical therapy effect is enhanced.
(2) The heat dissipation apertures may also reduce heat conduction between the electromagnetic coil and the magnetic core. When the coil circular telegram, some of its heat that produces can scatter through the air of circulation, simultaneously because the air itself has better thermal-insulated effect, the louvre between coil and the magnetic core can effectively weaken the transmission when hot like this to make the temperature of magnetic core be unlikely to too high and produce discomfort or injury to the human body. Meanwhile, the thermal demagnetization effect is inhibited, the generation of a strong magnetic field is also facilitated, and the physical therapy effect is enhanced.
(3) Because the magnetic field of the magnetic core is given by the electrified coil, the framework positioned between the magnetic core and the coil has a certain weakening effect on the passing of the magnetic field. And set up some skeletons between magnetic core and the coil into the louvre, because the weakening effect of air to magnetic field is low, so the louvre can let the magnetic field pass through better, keeps magnetic field intensity.
(4) The heat dissipation holes arranged between the hollow part and the side surface of the framework greatly reduce the weight of the framework under the premise of not greatly reducing the structural strength of the framework, so that the whole electromagnetic coil device is more portable.
(5) As an improvement, the magnetic core is composed of a plurality of magnetic needles arranged in a bundle shape and used for replacing a whole iron core placed in the magnetic core in the prior art. After hundreds of times of repeated experiments and combined use experience, the inventor unexpectedly finds that the magnetic needle bundle consisting of a plurality of magnetic needles is used as a component for enhancing the magnetic field of the coil, and the enhancement effect is better than that of using a whole iron core. The upper part of the magnetic needle is in a conical shape or a multi-pyramid shape, and the magnetic needle bundle consisting of the magnetic needles enables the magnetic fields of the magnetic needles to be mutually superposed, so that the magnetic fields can be more concentrated and the strength is higher. The magnetic field has stronger penetrating power to the surface of the human body, so that the magnetic field reaches deeper parts of the human body, and the treatment effect is better exerted. The magnetic field intensity of each magnetic needle can reach 2000-6000 gauss, the length is 2-22 cm, and the diameter is 0.5-3 cm; a plurality of magnetic needles are closely arranged to form a superposed magnetic field.
(6) As the improvement, the heat dissipation holes surround the hollow part of the framework and are provided with more than one layer, and the heat dissipation holes can be arranged into two or more layers, so that the heat dissipation holes surround the hollow part of the framework and are of a honeycomb structure on the end surface of the framework, the contact area of the framework and cooling air is increased, and the heat dissipation efficiency is enhanced.
(7) In the heat dissipation type electromagnetism physiotherapy equipment, insert the lower part of magnetism needle in the heat dissipation case, especially heat radiation structure, let magnetism needle lower half and heat radiation structure's heat radiation fin carry out the heat exchange very closely, can be quick give heat radiation structure with the heat that coil and magnetic core gived off fast, then the forced air cooler in the rethread heat dissipation case blows the cooling air, gives off the heat. Meanwhile, cooling air can pass through the heat dissipation holes, so that the cooling effect is further enhanced. The two parts both play a role in strengthening the magnetic field intensity of the coil, and effectively avoid the damage of the heat accumulated by the long-term heating of the coil and the magnetic core to the device parts. The magnetic needle conducts the temperature of the whole coil through an external contact heat dissipation structure, so that the working current can be continuously improved to act on the coil, and the ultrahigh magnetic field intensity can be generated. In the prior art, the bottom of a coil containing the whole iron core is tightly attached to a radiating fin instead of inserting the lower half parts of a plurality of magnetic needles into the radiating box, and compared with the invention, the radiating effect is 3 times worse, and the service life is much shorter.
Drawings
FIG. 1 is a schematic perspective view of a heat dissipation type electromagnetic coil device according to an embodiment of the present application;
FIG. 2 is a schematic top view of a heat dissipating electromagnetic coil device according to an embodiment of the present application;
FIG. 3 is a schematic cross-sectional view illustrating a heat dissipating electromagnetic coil device according to an embodiment of the present application;
FIG. 4 is a schematic perspective view of a heat dissipation type electromagnetic physiotherapy apparatus according to an embodiment of the present application;
FIG. 5 is a schematic cross-sectional view of a heat dissipation type electromagnetic physiotherapy apparatus according to an embodiment of the present application;
wherein, 1 is a framework, 11 is a heat dissipation hole, 12 is a supporting wall, 2 is a coil, 3 is a magnetic core, 31 is a magnetic needle, 311 is the lower part of the magnetic needle, 100 is a heat dissipation type electromagnetic coil device, 200 is a heat dissipation box, 201 is a heat dissipation structure, 202 is an air inlet, 203 is an air outlet, and 300 is a cooling device.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.
Referring to fig. 1 to 3, a heat dissipation type electromagnetic coil device according to embodiment 1 of the present application includes a hollow bobbin 1, a coil 2, and a magnetic core 3; the coil 2 is formed by winding a plurality of turns of conducting wires on a supporting wall 12 on the side surface of the framework 1 in the circumferential direction, the magnetic core 3 is arranged in the hollow part of the framework 1, consists of a plurality of magnetic needles 31 arranged in a bundle shape and penetrates through the hollow part of the whole framework 1; a plurality of heat dissipation holes 11 are further formed in the support wall 12 of the framework 1, and the heat dissipation holes 11 are used for cooling air to pass through.
In one embodiment, the heat dissipation holes extend along the axial direction of the hollow portion of the frame and penetrate through the upper and lower end portions of the support wall. Furthermore, the cross section of each radiating hole is arc-shaped, and the plurality of radiating holes are arranged around the supporting wall of the framework at equal intervals.
The working principle of the invention is as follows: the coil 2 is connected with a power supply, so that a strong magnetic field can be generated in the axial direction of the magnetic core 3, the strength of the strong magnetic field is well controlled, and the electromagnetic coil 2 device is close to a human body, so that electromagnetic physiotherapy can be carried out; when the coil 2 is electrified to generate a strong magnetic field, heat is continuously radiated outwards due to the action of the resistor in the lead, and at the moment, an air cooling device can be arranged outside the electromagnetic coil device; the air cooling device pushes cold air to continuously flow through the electromagnetic coil device, the cold air passes through two end faces of the framework 1 and the outer side of the coil 2, particularly the heat dissipation holes 11, and waste heat generated by the coil 2 is taken away; meanwhile, the heat dissipation holes 11 are spaced between the coil 2 and the magnetic core 3, and air in the heat dissipation holes 11 is a poor heat conductor, so that heat transferred from the coil 2 to the magnetic core 3 can be reduced; the shielding effect of air on the magnetic field is very weak, so that the magnetic field generated by the coil 2 can pass through the magnetic core 3; the heat dissipation holes 11 can also greatly reduce the weight of the framework 1 without greatly affecting the structural strength of the framework 1.
The heat dissipation holes 11 are through holes extending in the axial direction of the hollow portion of the frame 1 and penetrate the upper and lower end portions of the support wall 12; the cross-sectional shape of the heat dissipation hole 11 may be any shape, such as a circle, a square, a rectangle, etc.; in order to maximize the heat dissipation effect of the heat dissipation holes 11 within a limited thickness range, it is preferable to use the heat dissipation holes 11 in the shape of a circular arc.
The number of the heat dissipation holes 11 can be one or more than one, and the heat dissipation holes are selected and arranged by a person skilled in the art according to needs; preferably, the number of the heat dissipation holes 11 is six, the cross section of each heat dissipation hole is circular arc, and adjacent heat dissipation holes 11 are separated by support columns.
A plurality of heat dissipation holes 11 are circumferentially arranged around a support wall 12 of the framework 1; the heat dissipation holes 11 are arranged around the support wall 12, preferably arranged as a single layer, or arranged as two or more layers of heat dissipation holes 11 as required;
specifically, adjacent heat dissipation holes 11 are separated by support pillars; if the heat dissipation hole is a layer of heat dissipation hole 11, one end of the support column is connected with the side wall of the hollow part of the framework 1, and the other end of the support column is connected with the side surface of the framework 1; in the case of multiple layers of heat dissipation holes 11, one end of the support post is connected to the sidewall of the hollow portion of the frame 1 or the top surface of the heat dissipation hole 11 at the lower layer thereof, and the other end thereof can be connected to the bottom surface of the heat dissipation hole 11 at the upper layer thereof or the side surface of the frame 1.
The number of the magnetic cores is 5-21; the section of the magnetic needle 31 can be in any shape such as a circle, a square, a rectangle and the like; the upper portion of the magnetic needle 31 has a conical or polygonal cone shape, and the cross section of the upper portion of the conical or polygonal cone-shaped magnetic needle 31 gradually decreases along the magnetic field emission direction of the magnetic needle 31.
The diameter of the winding wire of the coil 2 is 0.5-1.5mm, and the number of turns is 800 and 1200 turns.
As shown in fig. 3, the cross section of the framework 1 is i-shaped, the supporting wall 12 is located in the vertical part of the i shape, the hollow part of the framework 1 is located in the middle of the supporting wall 12, and the upper end surface and the lower end surface of the framework 1 extend towards the periphery in a protruding manner to form two transverse parts of the i shape.
Referring to fig. 4-5, a heat dissipation type electromagnetic physiotherapy apparatus according to embodiment 2 of the present application includes the heat dissipation type electromagnetic coil device 100 described in embodiment 1, a pulse control circuit, and a heat dissipation box 200, wherein a coil 2 in the heat dissipation type electromagnetic coil device 100 is connected to the pulse control circuit, and is configured to introduce a current for generating a pulse magnetic field into the coil 2; the magnetic needle lower part 311 of the heat dissipation type electromagnetic coil device 100 is inserted into the heat dissipation box 200, and is used for transferring waste heat generated by the heat dissipation type electromagnetic coil device 100 to the heat dissipation box 200 through the magnetic needle 31, so that the heat dissipation efficiency is enhanced; the heat radiation box 200 is also provided with a cooling device 300.
The bottom in the heat dissipation box 200 is also provided with a heat dissipation structure 201 formed by a plurality of heat dissipation fins arranged in parallel; the lower part 311 of the magnetic needle is inserted into the heat dissipation structure 201; the heat dissipation box 200 is provided with an air inlet 202 and an air outlet 203, the cooling device 300 may be an air cooling machine or other cooling devices, the air cooling machine is disposed at the air inlet 202 or the air outlet 203 and is used for pushing cooling air to enter the heat dissipation box from the air inlet 202, and after flowing through the heat dissipation type electromagnetic coil device 100 and the heat dissipation holes 11 thereof, the cooling air carries waste heat to be discharged from the air outlet 203.
Each magnetic needle is 2-22 cm in length and 0.5-3 cm in diameter. When the heat dissipation type electromagnetic physiotherapy device works, the pulse control circuit provides pulse current for the coil 2 of the heat dissipation type electromagnetic coil device 100, and then the coil 2 and the magnetic core 3 generate a strong pulse magnetic field, and the magnetic field intensity can reach 15000 plus 30000 gauss; the upper part of the magnetic needle is in a conical shape or a multi-pyramid shape, and the magnetic needle bundle consisting of the magnetic needles enables the magnetic fields of the magnetic needles to be mutually superposed, so that the magnetic fields can be more concentrated and the strength is higher. The magnetic field has stronger penetrating power to the surface of the human body, so that the magnetic field reaches deeper parts of the human body, and the treatment effect is better exerted. The magnetic field intensity of each magnetic needle can reach 2000-6000 gauss.
The coil 2 generates a large amount of heat due to the resistance in the wire while generating a strong magnetic field; the air cooling machine in the heat dissipation box 200 blows cool air into the heat dissipation box 200 from the air inlet, and the cool air flows through the heat dissipation type electromagnetic coil device 100 and the heat dissipation holes 11 thereof, carries a large amount of waste heat, and is discharged out of the heat dissipation box from the air outlet 203 or the heat dissipation holes 11.
Claims (10)
1. The heat dissipation type electromagnetic coil device is characterized by comprising a hollow framework, wherein coils are wound on a supporting wall on the side face of the framework, a magnetic core consisting of a plurality of magnetic needles arranged in a bundle shape is arranged in the hollow portion of the framework, a plurality of heat dissipation holes are formed in the supporting wall of the framework, and cooling air passes through the heat dissipation holes.
2. The heat dissipating electromagnetic coil apparatus according to claim 1, wherein the heat dissipating holes are disposed around the supporting wall of the frame at equal intervals.
3. The heat dissipating electromagnetic coil device according to claim 1 or 2, wherein the plurality of heat dissipating holes are arranged in a single layer or multiple layers around a support wall of the bobbin.
4. The heat dissipating electromagnetic coil device according to claim 1, wherein the heat dissipating holes extend along an axial direction of the hollow portion of the frame and penetrate upper and lower end portions of the support wall.
5. The heat dissipation type electromagnetic coil device according to claim 1, wherein the upper portion of the magnetic needle is conical or polygonal, and each of the magnetic needles has a length of 2 to 22 cm and a diameter of 0.5 to 3 cm.
6. The heat dissipating electromagnetic coil device according to claim 1, wherein the heat dissipating hole has a circular arc-shaped cross section.
7. Heat dissipation type electromagnetism physiotherapy equipment, its characterized in that includes: the heat dissipating solenoid device of any one of claims 1 to 6, wherein a pulse control circuit is connected to the coil of the heat dissipating solenoid device, and a lower portion of the magnetic needle of the heat dissipating solenoid device is inserted into a heat dissipating box provided with a cooling device.
8. The heat dissipation type electromagnetic physiotherapy apparatus according to claim 7, wherein a heat dissipation structure composed of a plurality of heat dissipation fins arranged in parallel is provided at the bottom of the heat dissipation box; the lower part of the magnetic needle is inserted into the heat dissipation structure; the heat dissipation box is provided with an air inlet and an air outlet, the cooling device is an air cooling machine, and the air cooling machine is arranged at the air inlet or the air outlet and used for pushing cooling air to enter the heat dissipation box from the air inlet and flow through the heat dissipation type electromagnetic coil device and the heat dissipation holes of the heat dissipation type electromagnetic coil device.
9. The heat dissipation type electromagnetic physiotherapy apparatus according to claim 7, wherein said heat dissipation type electromagnetic physiotherapy apparatus is a chair type electromagnetic physiotherapy apparatus.
10. The heat dissipation type electromagnetic physiotherapy apparatus according to claim 7, wherein a plurality of said heat dissipation type electromagnetic physiotherapy apparatuses are connected and combined together to form a bed type electromagnetic physiotherapy apparatus.
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CN202110316769.4A CN113077958A (en) | 2021-03-22 | 2021-03-22 | Heat dissipation type electromagnetic coil device and electromagnetic physiotherapy equipment thereof |
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Cited By (1)
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CN116913653A (en) * | 2023-06-26 | 2023-10-20 | 佛山玉玄宫科技股份有限公司 | Self-radiating fine magnetic field device |
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CN111584197A (en) * | 2020-05-11 | 2020-08-25 | 永州美凯电子有限公司 | High-frequency transformer with low loss |
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CN101327358A (en) * | 2008-07-23 | 2008-12-24 | 李久峰 | Therapeutic equipment for physical therapy using dense multi-point fine magnetic field |
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