Magnetic stimulation device with planar coil structure

Abstract

The present invention discloses a magnetic stimulation device with a planar coil structure, comprising: a power supply module, a current control module, a plurality of planar coil modules and a plurality of electrical connection modules. In the planar coil module of the present invention, the coil structure is a flat and thin planar design and can be modularized. Compared with the existing magnetic stimulation device, the overall structure of the present invention is light, thin and short, easy to carry and use, and can be installed on clothing or built into a mobile device to provide a convenient magnetic stimulation treatment.

Description

Technical Field

[0001] The present invention relates to a magnetic stimulation device, in particular to a magnetic stimulation device having a flattened planar coil structure that can be installed on clothing or built into a mobile device, and can perform magnetic stimulation on the human body to improve physical fitness. Background Art

[0002] In recent years, due to the development of electromagnetic field technology, many studies on biomagnetic fields have begun to lead the trend. The research on biomagnetic fields has been applied to various fields, including promoting the growth of plant seeds and the health research of organisms. Some studies also show that weak magnetic fields can promote cell division and growth (MEMaffei, Magnetic field effects on plant growth, development, and evolution, Frontiers in plant science. 5 (2014) 445); in studies on mice, it was found that changes in magnetic fields can cause differences in metabolic rates (A. Lerchl, et al., Marked rapid alterations in nocturnal pineal serotonin metabolism in mice and rats exposed to weak intermittent magnetic fields, Biochemical and biophysical research communications. 169 (1) (1990) 102-108); in studies on humans, it was also found that low-frequency static magnetic fields can promote human white blood cells (J. Sabo, et al., Effects of static magnetic field on human leukemic cell line HL-60, Bioelectrochemistry. 56 (1-2) (2002) 227-231). Therefore, the application of magnetic fields has also set off an important research direction in the scientific community: magnetic stimulation has gradually attracted people's attention.

[0003] In the basic medical research, magnetic stimulation has achieved the following results: 74% improvement was found in patients with abnormal heart rate after magnetic intradermal acupuncture at the Neiguan acupoint (Shang Rong et al., 38 cases of prevention and treatment of supraventricular arrhythmia with magnetic intradermal acupuncture at the Neiguan acupoint, Journal of Traditional Chinese Medicine 14 (4) (2001) 62-63); low pulse magnetic fields were found to reduce depression in patients with brain trauma (L. Baker-Price, M. A. Persinger, Weak, but complex pulsed magnetic fields may reduce depression following traumatic brain injury, Perceptual and motorskills. 83 (2) (1996) 491-498); the sensitivity of Escherichia coli cells' ion channels increased in an environment with a magnetic field 25 times that of the earth's magnetic field (J. Dobson, et al., Preliminary evidence for weak magnetic field effects on mechanosensitive ion channel subconducting states in Escherichiacoli, Electromagnetic Biology and Motion Science 14 (4) (2001) 62-63). Medicine.21(1)(2002)89-95). In the study of traditional Chinese medicine, it was found that the number of immune cells can be significantly improved after 12 weeks of external application of magnetic Chinese medicine patches (Fang Feng, Shen Qian, The effect of external application of magnetic Chinese medicine patches on the cellular immune function of susceptible children, Chinese Acupuncture 17(1)(1997)15-16). In the study of acupoint magnetic fields, placing magnets on the Neiguan, Zusanli, and Guanyuan acupoints of men has been found to increase the amount and activity of sperm (Zhou Chuanyun, Zhang Ruixue, A preliminary study on the mechanism of action of magnetic acupoint therapy, Journal of Anhui University of Traditional Chinese Medicine 21(3)(2002)8-10). Therefore, we can know that the use of low-energy magnetic fields has a good effect on physiological regulation.

[0004] As the research results of magnetic stimulation become more and more fruitful, many commercialized technologies have also appeared in front of people, such as Taiwan Invention Patent No. I528984, Utility Patent No. M562133, Invention Application No. 201922313, etc. These technologies have some common characteristics: large size and high price, which makes it difficult to carry and use at home or when going out. In addition, most of the existing technologies are also about repetitive transcranial magnetic stimulation (rTMS), which has poor versatility. The main reason is that the volume of the magnetic stimulation generating device cannot be reduced due to the control of magnetic field intensity. If the volume of the magnetic stimulation generating device is to be reduced, you can refer to China Patent Announcement No. CN105242224, a similar coil structure of a close-fitting double-layer planar radio frequency coil for composite insulator detection. However, the patent is applicable to radio frequency coils, which are high-frequency radiation and cannot be applied to low-frequency current magnetic fields; the latter is necessary for magnetic stimulation technology.

[0005] Therefore, in order to implement the results of magnetic stimulation research in life and improve people's health, it is necessary to have a miniaturized magnetic stimulation device that people can use without operating pressure. Preferably, the coil of such a magnetic stimulation device can be flat and modular, and then installed on clothing or built into mobile devices, becoming a part of life. Summary of the invention

[0006] In order to meet the above needs, the main purpose of the present invention is to provide a magnetic stimulation device with a planar coil structure, including: a power supply module, providing power; a current control module, electrically connected to the power supply module, including: a signal generator, generating a current waveform signal; and a current switch, electrically connected to the signal generator, adjusting the waveform of the current from the power supply module to an adjusted output current with the current waveform signal; and at least one planar coil module, including: a first insulating substrate; and a planar coil, formed on the first insulating substrate, the two ends of the planar coil and the current switch form a loop, receiving the adjusted output current to generate a corresponding variable intensity magnetic field. Wherein, if the number of the planar coil module is one, the planar coil is directly electrically connected to the current switch; if the number of the planar coil modules is more than two, the ends of the planar coils of the two adjacent planar coil modules are connected in series, and the ends of the planar coils of the first and last planar coil modules that are not connected in series are directly electrically connected to the current switch.

[0007] The present invention discloses another magnetic stimulation device with a planar coil structure, including: a power supply module, providing power; a current control module, electrically connected to the power supply module, including: a signal generator, generating a current waveform signal; and a current switch, electrically connected to the signal generator, adjusting the waveform of the current from the power supply module to an adjusted output current with the current waveform signal; and at least one planar coil module, including: at least one first insulating substrate; and a plurality of planar coils, arranged in parallel with each other, with two adjacent planar coils electrically connected and formed on both sides of the same first insulating substrate. Among them, if the number of the planar coil modules is one, the endpoints of the two outermost planar coils are directly electrically connected to the current switch to form a loop; if the number of the planar coil modules is more than two, the endpoints of the outermost planar coils of two adjacent planar coil modules are connected in series, and the unconnected endpoints of the outermost planar coils of the first and last planar coil modules are directly electrically connected to the current switch; the planar coil receives the adjusted output current to generate a corresponding magnetic field of varying strength, and the current flows in the same rotation direction between multiple planar coils in the same planar coil module, and each planar coil is substantially aligned at the point where the intensity of the magnetic field generated by the current is the strongest.

[0008] Preferably, the planar coil module may further include an iron core located at a location where the magnetic field generated by the current in the planar coil module is strongest, so as to enhance the overall magnetic permeability of the planar coil module.

[0009] Preferably, the current control module may further include a current limiter electrically connected between the power supply module and the current switch to limit the current from the power supply module.

[0010] Preferably, two adjacent planar coils are electrically connected by electroplating through a through hole formed in the first insulating substrate.

[0011] Preferably, the power supply module may include at least one primary battery, at least one secondary battery or a power supply.

[0012] Preferably, the signal generator is a waveform generator, a pulse generator or a clock generator.

[0013] Preferably, the current waveform signal has a waveform of a sine wave, a half-sine wave, a pulse wave or a fixed waveform.

[0014] Preferably, the planar coil may be formed by etching metal foil, winding metal wire or printing conductive paste.

[0015] Preferably, the first insulating substrate is made of bakelite, tissue paper, epoxy resin, glass cloth, glass fiber, phenolic resin, glass, polyimide or polyester.

[0016] The magnetic stimulation device with a planar coil structure may further include multiple electrical connection modules, electrically connecting the planar coil module and the current switch to form a loop, each electrical connection module including: a second insulating substrate; at least one wire formed on the second insulating substrate; and a waterproof protective layer covering the at least one wire and the second insulating substrate to protect the at least one wire and prevent it from being damaged by external moisture.

[0017] Preferably, the material of the second insulating substrate is polyimide or polyester.

[0018] Preferably, the waterproof protective layer is made of polyimide film or polyethylene terephthalate film.

[0019] According to the present invention, the planar coil is formed around a specific pattern. The planar coil module generates an electrical stimulation magnetic field generally between 0 and 1000 Gauss in response to the adjusted output current.

[0020] The coil structure of the present invention is a flat and thin planar design and can be modularized. Compared with the existing magnetic stimulation devices, the overall structure of the present invention is light, thin and short, easy to carry and use, and can be installed on clothing or built into mobile devices, thereby meeting the above needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0022] Figure 1 : A system block diagram of a magnetic stimulation device with a planar coil structure according to an embodiment of the present invention;

[0023] Figure 2 : Schematic cross-section of the planar coil module;

[0024] Figure 3 : The magnetic stimulation area generated inside the planar coil;

[0025] Figure 4 : The change of magnetic field intensity with time due to fixed waveform current;

[0026] Figure 5 : The change of magnetic field intensity with time due to sinusoidal current;

[0027] Figure 6 : The change of magnetic field intensity with time due to pulse wave current;

[0028] Figure 7 : The change of magnetic field intensity over time due to pulse wave modulation of high frequency wave current;

[0029] Figure 8 : A cross-sectional view of the electrical connection module;

[0030] Fig. 9 : A system block diagram of a magnetic stimulation device with a planar coil structure according to another embodiment of the present invention;

[0031] Fig.10 : A cross-sectional view of a planar coil module according to another embodiment;

[0032] Fig.11 :The first planar coil and the second planar coil are composed of Fig.10 Schematic diagram looking in the direction of the arrow;

[0033] Fig.12 :exist Figure 1 A cross-sectional view of the structure of different planar coil modules under the structure of the magnetic stimulation device with a planar coil structure;

[0034] Fig.13 : Fig.12 A schematic diagram of a planar coil of an embodiment;

[0035] Fig.14 : Electrical connection of 3 planar coils of different shapes.

[0036] Description of Reference Numerals

[0037] 100 Power Supply Module

[0038] 200 Current Control Module

[0039] 210 Signal Generator

[0040] 220 Current switch

[0041] 230 Current Limiter

[0042] 300 Planar Coil Module

[0043] 310 first insulating substrate

[0044] 311 first insulating substrate

[0045] 3111 Through hole

[0046] 312 upper first insulating substrate

[0047] 3121 Through Hole

[0048] 313 middle layer first insulating substrate

[0049] 3131 Through Hole

[0050] 314 lower first insulating substrate

[0051] 3141 Through Hole

[0052] 320 Planar Coil

[0053] 3221 Inner endpoint

[0054] 321 First Planar Coil

[0055] 3211 Inner endpoint

[0056] 322 Second planar coil

[0057] 3221 Inner endpoint

[0058] 323 First Planar Coil

[0059] 3231 Inner endpoint

[0060] 324 Second planar coil

[0061] 3241 Inner endpoint

[0062] 3242 External endpoint

[0063] 325 Third Plane Coil

[0064] 3251 Inner endpoint

[0065] 3252 External endpoint

[0066] 326 Fourth Plane Coil

[0067] 3261 Inner endpoint

[0068] 330 waterproof protective layer

[0069] 331 First waterproof protective layer

[0070] 332 Second waterproof protective layer

[0071] 333 First waterproof protective layer

[0072] 334 Second waterproof protective layer

[0073] 340 Electroplating material

[0074] 350 The point where the magnetic field generated by the current is the strongest

[0075] 360 Magnetic Stimulation Area

[0076] 370 Iron Core

[0077] 400 Electrical connection module

[0078] 410 second insulating substrate

[0079] 420 Wire

[0080] 430 Waterproof protective layer. DETAILED DESCRIPTION

[0081] The technical scheme in the embodiment of the present invention is described clearly and completely below in conjunction with the accompanying drawings in the embodiment of the present invention. In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0082] See also Figure 1 , which is a system block diagram of a magnetic stimulation device with a planar coil structure according to an embodiment of the present invention. The magnetic stimulation device with a planar coil structure includes: a power supply module 100, a current control module 200, two planar coil modules 300 and three electrical connection modules 400. The composition, function and mutual operation of each module are described in detail below.

[0083] The power supply module 100 is the main component for providing power. According to the spirit of the present invention, the power provided by the power supply module 100 can be direct current or alternating current. In terms of form, the power supply module 100 can be a battery box including at least one primary battery (such as an alkaline battery, a mercury battery) or at least one secondary battery (such as a lithium battery), and two or more batteries can be connected in parallel or in series to provide power. The power supply module 100 can also be a power supply, which converts the mains power into direct current with a transformer, or even directly provides stepped-down alternating current.

[0084] The current control module 200 is electrically connected to the power supply module 100, and includes: a signal generator 210, a current switch 220 and a current limiter 230. The function of the signal generator 210 is to generate a current waveform signal. The waveform of the current waveform signal can be a periodic waveform, such as a sine wave, a half-sine wave or a pulse wave. The waveform of the current waveform signal can also be a fixed waveform, and the waveform remains essentially unchanged for a period of time. In some embodiments, a periodic wave or a non-periodic wave of a higher frequency (such as 1MHz) can be adjusted on the aforementioned basic waveform. According to the present invention, the signal generator 210 can be a waveform generator, a pulse generator or a clock generator. In this embodiment, the current control module 200 is a waveform generator. In terms of form, the current control module 200 can be a single-chip microcomputer. According to a preset program or receiving an external programmable pulse or waveform setting, the programmable waveform generator can control the current switch 220 to generate a desired current waveform.

[0085] As described above, the current switch 220 is electrically connected to the signal generator 210, and uses the current waveform signal to adjust the waveform of the current from the power supply module 100 to an adjusted output current. In other words, the adjusted output current itself has a waveform that changes with time (such as a sine wave, a half-sine wave, or a pulse wave), or a current that is fixed within a period of time.

[0086] The current limiter 230 is electrically connected between the power supply module 100 and the current switch 220 to limit the current from the power supply module 100. The current limiter 230 is a protection circuit that allows a certain amount of current to enter the current control module 200, and its purpose is to protect the safety of the user. However, in other embodiments, since the current of the power supply module 100 is small, the current limiter 230 may not be set, and the power supply module 100 is directly electrically connected to the current switch 220.

[0087] Please see Figure 2 , which is a cross-sectional schematic diagram of a planar coil module 300. The planar coil module 300 includes a first insulating substrate 310, a planar coil 320, and a waterproof protective layer 330 covering the planar coil 320 and a portion of the first insulating substrate 310. The planar coil 320 is formed on the first insulating substrate 310 and is protected from rust by the waterproof protective layer 330. According to the spirit of the present invention, the planar coil module 300 can be in the form of a printed circuit board (soft or hard). Therefore, the planar coil 320 can be formed by etching metal foil or printing conductive glue, and the material of the first insulating substrate can be, but is not limited to, bakelite, cotton paper, epoxy resin, glass cloth, glass fiber, phenolic resin, glass, polyimide or polyester. In addition, the planar coil module 300 may not be in the form of a printed circuit board, and the planar coil 320 is formed by winding a metal wire and fixed on the first insulating substrate 310. At this time, the material of the first insulating substrate 310 is not limited to the aforementioned items, but can widely include non-metallic and electrically insulating materials.

[0088] The two ends of the planar coil 320 form a loop with the current switch 220 to receive the adjusted output current to generate a corresponding variable strength magnetic field (generating an induced magnetic field). Figure 3 , the figure shows the magnetic stimulation area 360 generated inside the planar coil 320. The part of the human body facing this area is the area receiving the magnetic stimulation. Due to the different winding shapes of the coil, there is a point 350 (such as the strongest point 350) in the magnetic stimulation area 360 where the magnetic field generated by the current is the strongest. Figure 1 The magnetic field strength at this location can be referred to the solenoid magnetic field formula B = μ0·N·I, where μ0 is the air permeability (4π×10 -7 T·m·A -1), N is the number of coils, and I is the current intensity. Under the same current intensity, increasing the number of coils of the planar coil 320 can increase the magnetic field intensity. The magnetic field intensity of the area within the magnetic stimulation area 360 will be less than the value calculated by the above formula, except for the strongest point 350 where the current generates the magnetic field. For all positions within the magnetic stimulation area 360, the change in magnetic field intensity at each location will vary due to the different waveforms of the adjusted output current itself. Figure 4 The change of magnetic field intensity generated by the fixed waveform current over time is shown. In the present magnetic field emission, the maximum magnetic field intensity is about 100 Gauss. According to past literature, low-energy fixed magnetic fields (0-1000 Gauss) have therapeutic stimulating effects on biological bodies. Therefore, in all embodiments of the present invention, the planar coil module is generally between 0 and 1000 Gauss when subjected to the adjusted output current to generate an electrical stimulation magnetic field. Figure 5 As shown in the figure, the intensity of the magnetic field generated by the sine wave current changes with time. In this magnetic field emission, the magnetic field intensity changes with time between +100 Gauss and -100 Gauss in a sinusoidal manner, with a fixed period of 0.01 seconds, and a 100Hz low-frequency fixed-frequency sine wave magnetic field is emitted. If the sine wave current is changed to a half-sine wave current, its change mode will change accordingly between 0 and -100 Gauss, or 0 and +100 Gauss. Figure 6 As shown, the intensity of the magnetic field generated by the pulse wave current changes with time. In this magnetic field transmission, the maximum magnetic field intensity is about 100 Gauss, the fixed signal period is T = 0.01 seconds, and a low frequency (100Hz) pulse magnetic field is transmitted. Among them, the effective duty cycle of each transmission is 50%, and the implementation of the duty cycle can be adjusted by the signal generator 210 according to the application requirements (refer to Figure 1 ). Figure 7 As shown, the intensity of the magnetic field generated by the pulse wave modulating the high frequency wave current changes with time. In this magnetic field transmission, the radio frequency magnetic wave magnetic field of the low frequency (100Hz) signal cycle is transmitted with a fixed magnetic field intensity of ±95 Gauss and a fixed signal period of T0.01 seconds, and the duty cycle of each transmission is 50%. The radio frequency frequency in this example is 1MHz (modulated high frequency wave), and the magnetic field oscillates rapidly between ±95 Gauss according to the modulation waveform during each effective transmission cycle (shown by black stripes).

[0089] According to the present invention, the number of the planar coil module 300 may be at least one. If the number of the planar coil module 300 is one, the planar coil 320 is directly electrically connected to the current switch 220; if the number of the planar coil module is more than two (such as Figure 1 ), the ends of the planar coils 320 of two adjacent planar coil modules 300 are connected in series, and the non-connected ends of the planar coils 320 of the first and last planar coil modules 300 are directly electrically connected to the current switch 220, thereby forming a loop.

[0090] In addition, the planar coil module 300 may include an iron core 370 located at the strongest point 350 of the planar coil module 300 where the magnetic field generated by the current is the strongest, so as to enhance the overall magnetic permeability of the planar coil module 300, thereby enhancing the magnetic field strength. The iron core 370 may be selectively installed in any planar coil module 300 according to actual needs.

[0091] According to the present invention, the number of the electrical connection modules 400 is not limited and varies with the number of the planar coil modules 300. The electrical connection modules 400 electrically connect the planar coil modules 300 and the current switch 220 to form a loop. In practice, the most basic form of the electrical connection module 400 is a wire, and a better way is to use a method similar to a flexible printed circuit board. Therefore, please refer to Figure 8 (This figure is a cross-sectional view of an electrical connection module). In this embodiment, each electrical connection module 400 includes a second insulating substrate 410, at least one wire 420 and a waterproof protective layer 430. The wire 420 is formed on the second insulating substrate 410. Similar to the planar coil 320, it can be formed on the second insulating substrate 410 by etching a metal foil or printing a conductive paste. The material of the second insulating substrate 410 can be, but is not limited to, polyimide or polyester. The waterproof protective layer 430 (such as Figure 1 ), covers the wire 420 and the second insulating substrate 410 to protect the at least one wire 420 from external moisture. The material of the waterproof protective layer 430 can be a polyimide film or a polyethylene terephthalate film. In terms of form, if all the planar coil modules 300 and the electrical connection modules 400 are made on the same second insulating substrate 410, it is feasible to form a circuit connected to each other with copper foil, and the number of electrical connection modules 400 can be called one. However, considering practicality, the planar coil module 300 needs to be located in some specific positions, such as acupuncture points, which can provide therapeutic effects to improve physical health. Therefore, the electrical connections between the planar coil modules 300, between the planar coil module 300 and the current control module 200, and even between the current control module 200 and the power supply module 100 are connected separately using the electrical connection module 400.

[0092] In the previous embodiment, the planar coil module has only one planar coil. However, according to the spirit of the present invention, the planar coil module can have more than two planar coils, which are stacked in parallel. The advantage of this is that more turns of planar coils can be formed in a three-dimensional manner within the limited planar coil module area to enhance the magnetic field strength generated by the planar coil module. Fig. 9 Now, another embodiment of a magnetic stimulation device with a planar coil structure is used for illustration.

[0093] Fig. 9The magnetic stimulation device with a planar coil structure in the present embodiment is similar to the structure in the previous embodiment, except that the planar coil module 300 used in the present embodiment has two planar coils, and the number of planar coil modules 300 is only one (thereby the number of electrical connection modules 400 becomes two). In order to simplify the description, the types and functions of the power supply module 100, the current control module 200 and the electrical connection module 400 are as described above and will not be repeated here, but it should be emphasized that the number of planar coil modules 300 is at least one, not limited to one in the present embodiment. Fig.10 , which is a cross-sectional view of the planar coil module 300 of this embodiment. The planar coil module 300 includes a first insulating substrate 311, a first planar coil 321, a second planar coil 322, a first waterproof protective layer 331 and a second waterproof protective layer 332. The first planar coil 321 and the second planar coil 322 are arranged parallel to each other, adjacently electrically connected and formed on both sides of the first insulating substrate 311. The electrical connection is made by electroplating a through hole 3111 formed on the first insulating substrate 311 using an electroplating material 340 to electrically connect.

[0094] In this embodiment, there is only one planar coil module, and the endpoints of the first planar coil 321 and the second planar coil 322 are directly electrically connected to the current switch 220 to form a loop. The functions of the first planar coil 321 and the second planar coil 322 are to receive the adjusted output current to generate a corresponding magnetic field of varying strength. It should be noted that a technical feature of the present invention is that the current flows in the same rotation direction between multiple planar coils in the same planar coil module, and each planar coil is substantially aligned at the point where the magnetic field generated by the current has the strongest intensity. For a better understanding of this technical feature, please see Fig.11 , the figure shows that the first planar coil 321 and the second planar coil 322 are Fig.10 Schematic diagram viewed from the direction of the arrow in the middle. The current flows in from the end point in the left arrow direction of the first planar coil 321, and flows out from an inner end point 3211 of the first planar coil 321 in a clockwise direction. Since the inner end point 3211 is electrically connected to an inner end point 3221 of the second planar coil 322, the current flows into the inner end point 3221 again, and flows out from the end point in the right arrow direction of the second planar coil 322 in a clockwise direction. Each planar coil receives the adjusted output current to generate a corresponding magnetic field of varying strength. Since the current directions between the upper and lower planar coils are consistent, the magnetic field strength is the sum of the two. And because the strongest point 350 of the magnetic field generated by the current is substantially aligned (up and down direction), the magnetic lines of force will not interfere with each other and reduce the overall magnetic field strength. Preferably, an iron core can also be set at the strongest point 350 of the magnetic field generated by the current to enhance the overall magnetic permeability of the planar coil module 300.

[0095] In the above embodiments, the number of planar coils in the planar coil module is one or two. However, in practice, there may be more planar coils. Such an example will be described through the following embodiments.

[0096] Please see Fig.12 and Fig.13 , Fig.12 For Figure 1 Under the structure of the magnetic stimulation device with a planar coil structure, the construction of different planar coil modules, Fig.13 : is a cross-sectional view of the planar coil module 300 of this embodiment. The planar coil module 300 includes a first planar coil 323, a second planar coil 324, a third planar coil 325, a fourth planar coil 326, an upper first insulating substrate 312, a middle first insulating substrate 313, a lower first insulating substrate 314, a first waterproof protective layer 333 and a second waterproof protective layer 334. The planar coils are arranged parallel to each other, and two adjacent planar coils are electrically connected and formed on both sides of the same first insulating substrate. For example, the first planar coil 323 is electrically connected to the second planar coil 324 (electrically connected by electroplating a through hole 3121 formed on the upper first insulating substrate 312 using an electroplating material 340) and formed on both sides of the upper first insulating substrate 312; the second planar coil 324 is electrically connected to the third planar coil 325 (electrically connected by electroplating a through hole 3131 formed on the middle first insulating substrate 313 using an electroplating material 340) and formed on both sides of the middle first insulating substrate 313; the third planar coil 325 is electrically connected to the fourth planar coil 326 (electrically connected by electroplating a through hole 3141 formed on the lower first insulating substrate 314 using an electroplating material 340) and formed on both sides of the lower first insulating substrate 314. As mentioned above, the technical feature of the present invention is that the current flows in the same rotation direction between multiple planar coils in the same planar coil module, and each planar coil is substantially aligned at the point where the intensity of the magnetic field generated by the current is the strongest. In order to have a better understanding of this technical feature, please refer to Fig.13 , the figure shows that the first planar coil 323, the second planar coil 324, the third planar coil 325 and the fourth planar coil 326 are composed of Fig.12Schematic diagram of the circuit viewed from the arrow direction. The current flows into the end point of the first planar coil 323 in the direction of the arrow on the left side, and flows out from an inner end point 3231 of the first planar coil 323 in the clockwise direction. Since the inner end point 3231 is electrically connected to an inner end point 3241 of the second planar coil 324, the current flows into the inner end point 3241 and flows out from an outer end point 3242 of the second planar coil 324 in the clockwise direction. Then, the outer end point 3242 is electrically connected to an outer end point 3252 of the third planar coil 325, so the current continues to flow to an inner end point 3251 of the third planar coil 325 in the clockwise direction. Finally, since the inner end point 3251 is electrically connected to an inner end point 3261 of the fourth planar coil 326, the current flows into the inner end point 3261 and flows out from the end point of the fourth planar coil 326 in the direction of the arrow on the upper side in the clockwise direction. Each planar coil receives the adjusted output current to generate a corresponding variable strength magnetic field. The current direction between the four planar coils is consistent, so the magnetic field strength is the sum of the four. Because the strongest point 350 of the magnetic field generated by the current is substantially aligned (up and down direction), the magnetic lines of force will not interfere with each other and reduce the overall magnetic field strength. Overall, the three-dimensional structure is added to enhance the magnetic field strength.

[0097] In other embodiments, if the number of planar coil modules 300 is more than two, the endpoints of the outermost planar coils (the first planar coil 323 and the fourth planar coil 326) of two adjacent planar coil modules 300 are connected in series, and the non-connected endpoints of the outermost planar coils of the first and last planar coil modules 300 are directly electrically connected to the current switch 220.

[0098] According to the present invention, the shape of the planar coil is not limited to a square, but can be formed around a specific pattern, which is a square, a circle, a star or a heart. Fig.14 As shown, the planar coil module 300 may include three different shapes of planar coils for electrical connection. In this example, the three planar coils are circular, star-shaped, and heart-shaped. However, it should be noted that the points 350 where the magnetic field strength generated by the current of each planar coil is the strongest should be substantially aligned.

[0099] Although the present invention uses the human body as the target of magnetic stimulation, its application can also be extended to all organisms (animals and plants) to conduct extensive medical and biological operation research.

[0100] The above description is only a preferred embodiment of the present invention. Obviously, the described embodiment is only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Claims

1. A magnetic stimulation device having a planar coil structure, characterized in that: include: A power supply module, providing power; A current control module, electrically connected to the power supply module, comprising: a signal generator generating a current waveform signal; and a current switch electrically connected to the signal generator, for adjusting the waveform of the current from the power supply module into an adjusted output current using the current waveform signal; and At least one planar coil module, comprising: at least one first insulating substrate; and A plurality of planar coils are arranged in parallel with each other, and two adjacent planar coils are electrically connected and formed on both sides of the same first insulating substrate. Among them, if the number of the planar coil modules is one, the endpoints of the two outermost planar coils are directly electrically connected to the current switch to form a loop; if the number of the planar coil modules is more than two, the endpoints of the outermost planar coils of two adjacent planar coil modules are connected in series, and the unconnected endpoints of the outermost planar coils of the first and last planar coil modules are directly electrically connected to the current switch; the planar coil receives the adjusted output current to generate a corresponding magnetic field of varying strength, and the current flows in the same rotation direction between multiple planar coils in the same planar coil module, and each planar coil is substantially aligned at the point where the intensity of the magnetic field generated by the current is the strongest.

2. The magnetic stimulation device with a planar coil structure according to claim 1, characterized in that: The planar coil module further includes an iron core located at a position where the magnetic field generated by the current in the planar coil module is the strongest, so as to enhance the overall magnetic permeability of the planar coil module.

3. The magnetic stimulation device with a planar coil structure according to claim 1, characterized in that: The current control module further includes a current limiter electrically connected between the power supply module and the current switch to limit the current from the power supply module.

4. The magnetic stimulation device with a planar coil structure according to claim 1, characterized in that: Two adjacent planar coils are electrically connected by electroplating through a through hole formed on the first insulating substrate.

5. The magnetic stimulation device with a planar coil structure according to claim 1, characterized in that: The power supply module includes at least one primary battery, at least one secondary battery or a power supply.

6. The magnetic stimulation device with a planar coil structure according to claim 1, characterized in that: The signal generator is a waveform generator, a pulse generator or a clock generator.

7. The magnetic stimulation device with a planar coil structure according to claim 1, characterized in that: The waveform of the current waveform signal is a sine wave, a half-sine wave, a pulse wave or a fixed waveform.

8. The magnetic stimulation device with a planar coil structure according to claim 1, characterized in that: The planar coil is formed by etching metal foil, winding metal wire or printing conductive paste.

9. The magnetic stimulation device with a planar coil structure according to claim 1, characterized in that: The first insulating substrate is made of bakelite, cotton paper, epoxy resin, glass cloth, glass fiber, phenolic resin, glass, polyimide or polyester.

10. The magnetic stimulation device with a planar coil structure according to claim 1, characterized in that: It further comprises a plurality of electrical connection modules, electrically connecting the planar coil module and the current switch to form a loop, each electrical connection module comprising: a second insulating substrate; At least one conductive line formed on the second insulating substrate; and A waterproof protection layer covers the at least one wire and the second insulating substrate to protect the at least one wire from external moisture.

11. The magnetic stimulation device with a planar coil structure according to claim 10, characterized in that: The material of the second insulating substrate is polyimide or polyester.

12. The magnetic stimulation device with a planar coil structure according to claim 10, characterized in that: The material of the waterproof protective layer is a polyimide film or a polyethylene terephthalate film.

13. The magnetic stimulation device with a planar coil structure according to claim 1, characterized in that: The planar coil is formed around a pattern.

14. The magnetic stimulation device with a planar coil structure according to claim 1, characterized in that: The planar coil module generates an electrical stimulation magnetic field between 0 and 1000 Gauss in response to the adjusted output current.

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