Pulsating electromagnetic field generating device and method for driving the device

Abstract

The magnetic field generating unit is a core component of various treatment devices that use pulsating electromagnetic fields. The magnetic field generating module is provided with two or more coil electromagnets and inner and outer plates made of ferromagnetic material to maximize the attractive and repulsive forces between the electromagnets. The magnetic field generating module is again arranged in a horizontal or vertical space with its central axis aligned, and a driving method is provided to transmit magnetic force over long distances with low power through the attractive and repulsive forces between the magnetic field generating modules on the other side.

Description

[Technical Field]

[0001] The present invention relates to a pulsating electromagnetic field generator and a method for driving the same, and more particularly to an electromagnetic device for a pulsating electromagnetic field treatment device, which includes a magnetic field generating module having two or more coil electromagnets and inner and outer plates made of ferromagnetic material to maximize the attractive and repulsive forces between the electromagnets as a magnetic field generating unit, which is a core component of treatment in various treatment devices using pulsating electromagnetic fields, and a method for driving the same, in which the magnetic field generating modules are arranged in a horizontal or vertical space with their central axes aligned, and the magnetic force is transmitted over a long distance with low power through the attractive and repulsive forces between the magnetic field generating modules on the other side. [Background technology]

[0002] Pulsed Electro-Magnetic Field Therapy, a non-invasive treatment, has its therapeutic mechanism known through extensive research and is being applied to a variety of treatment devices. As shown in Figure 1, when a pulsated electromagnetic field is generated in the form of a constant low-frequency pulse and applied to cells, depolarization occurs at specific sites on the cell membrane, causing Ca2+ ions from the blood to flow into the cells and increase nitric oxide (NO) in the cytoplasm. The increased nitric oxide (NO) produces cGMP (cyclic guanosine monophosphate) in the cell nucleus, thereby activating cells and tissues.

[0003] In other words, it has been confirmed through numerous research papers that when a minute current is generated in cells through a pulsating electromagnetic field, the cells' oxygen and mineral absorption rate increases, toxins within the cells are reduced, and cell metabolism is activated. In fact, it is being used to treat a variety of wounds and pain due to its clinical effects of promoting bone formation and reducing swelling and pain.

[0004] However, most current pulsating electromagnetic field treatment devices use loop coils to generate the electromagnetic field. This requires high power input to the coils, which makes it structurally difficult to transmit magnetic force over long distances. This results in large systems that are difficult to carry, limiting their use as personal treatment devices. For example, the MBST product shown in Figure 2 uses the Hemholtz coil principle. Therefore, if the diameter of the loop coil is D, a loop coil of the same size must be installed at the D / 2 position. This results in large treatment device size and high power requirements to transmit sufficient magnetic force to the center of the coil, necessitating the need for relatively large control facilities for current control. Medtec's product also uses a loop coil configuration, which requires a large electromagnetic field generator, high power requirements, and a two-dimensional, flat configuration that makes it difficult to achieve three-dimensional magnetic field transmission. Furthermore, SE Therapies' product uses a single electromagnetic field generation module, eliminating interaction between the coils. It also combines multiple coils in a spiral to transmit magnetic force over long distances, resulting in large size and high power requirements.

[0005] In addition, as shown in Figure 3, the prior art patent proposed a technology in which multiple single coil electromagnet modules are arranged radially to induce attractive forces with other electromagnet modules, but this poses a problem in that a relatively large amount of power is required to induce attractive forces with other electromagnets that are far away.

[0006] To summarize the prior art, since it uses a loop-shaped coil, it is relatively large in size and requires high power for long-distance magnetic force transmission, which increases the capacity and size of the control device, making it difficult to develop applications for portable personal treatment devices.In addition, even in the case of a module using a single coil electromagnet, relatively large power is required to induce attractive force with the other electromagnet module located at a distance, so the control device for controlling this also becomes large.

[0007] Meanwhile, pulsating electromagnetic fields (PEMF) are a treatment that applies pulsating electromagnetic fields to the affected area to promote cell regeneration and inflammation. It has been widely used since it was approved by the US Food and Drug Administration in 1979 for the healing of fractures related to malunion. Recently, with the progress of various clinical trials and research, it has been applied to the treatment of various diseases (e.g., muscle pain, osteoporosis, arthritis, etc.). Furthermore, magnetic force is applied to the affected area in a certain pulse form, usually with an intensity of several mT to several hundred mT and a frequency form of several hundred Hz or less.

[0008] The pulsating electromagnetic field generator used in existing pulsating electromagnetic field treatment devices uses a coil in the form of a loop wire, and the magnetic force decreases rapidly with distance, requiring a large amount of power to transmit the magnetic force over long distances. Many copper coils are wound around the device and current is applied to utilize the electromagnetic force F generated here. Due to these issues, a large amount of power is required to transmit the magnetic force over long distances, which results in a problem of a large control unit and a large product size.

[0009] In addition, the pulsating electromagnetic field generator used in existing pulsating electromagnetic field treatment devices uses a coil in the form of a loop wire, and the magnetic field is generated by penetrating the center of the coil. While this is not a problem when the tissue to be treated is located far away, it is preferable to limit the area where the magnetic field is generated when treating tissue located close by, such as the skin. For example, when applying a treatment method for facial skin tissue regeneration, unwanted magnetic fields may affect the brain. However, the existing technology uses a loop wire coil, which has the problem of not being able to limit the area where the magnetic field is generated.

[0010] The pulsating electromagnetic field changes the magnetic force by changing the voltage applied to the coil. In other words, while the resistance of the coil is fixed, the amount of current is adjusted by adjusting the voltage strength and frequency, which in turn changes the strength and frequency of the magnetic field B, allowing for the induction of various waveforms. Various therapeutic effects are achieved depending on the strength and waveform of the magnetic field, and clinical trials are currently underway.

[0011] According to the paper "Veterinary Applications of Pulsed Electromagnetic Field Therapy" by James S. Gaynora, Sean Hagberg, and Blake T. Gurfeinc, 2018 (Non-Patent Document 1), which was cited as prior art, the digital waveform A proposed for bone growth stimulators has an asymmetrical characteristic of a 5-ms burst waveform at 200 us and 20 us intervals, repeated at 15 Hz, delivering an electric field E of 5 V / m. The analog waveform B is used in devices proposed to reduce swelling and pain, and has a short waveform with a 2-ms burst at 27.12 MHz interval, repeated at 2 Hz, delivering an electric field E of 10 V / m. The waveform of the voltage applied to the coil thus affects the strength of the electric field E and magnetic field B transmitted over long distances. As mentioned above, to transmit magnetic force over long distances with low power and maximize the therapeutic effect, the polarity of the magnetic force must alternate at regular intervals without energy loss, but the existing method presented in the paper applies a continuous change in voltage, which generates heat in the coil due to the back electromotive force of the coil, resulting in energy consumption, which results in low energy efficiency.

[0012] A treatment device that uses a pulsating electromagnetic field can have multiple magnetic field generators. The circuit configuration that generates the pulsating electromagnetic field can consist of a control unit that controls the circuit, a magnetic polarity control unit that controls the direction of the current such as an H-bridge or DAC (Digital Analog Converter), a power supply unit that amplifies power consumption and provides it to the polarity control unit such as a DC / DC, BMS, or OP AMP, and an electromagnetic field generator that consists of a coil for generating magnetic force. As explained in the voltage waveform applied to the magnetic field generator, since the generated magnetic field has a certain frequency, it is advantageous to synchronize the sinks of the magnetic field generators if you are hoping for the effect of mutual overlap and cancellation between the magnetic forces generated by using two or more magnetic field generators.

[0013] In existing technology, a control unit such as a CPU and a microcomputer (Micom) controls multiple magnetic field generators, which creates asynchronous intervals due to mismatched synchronization between the magnetic generators, resulting in reduced efficiency in overlapping and canceling out between the magnetic field generators.As an actual example, if one Micom controls four magnetic field generators, the magnetic force generation time difference (asynchronous interval) between adjacent magnetic field generators can be several ms or more. [Prior art documents] [Patent documents]

[0014] [Patent Document 1] Korean Patent Registration No. 10-1695096 (2017.01.04) [Patent Document 2] Korean Patent Registration No. 10-1768795 (2017.08.09) [Patent Document 3] Korean Patent Publication No. 10-2021-0106120 (2021.08.30) [Non-patent literature]

[0015] [Non-Patent Document 1] Paper: “Veterinary applications of pulsed electromagnetic field therapy” James S.Gaynora, Sean Hagbergb, Blake T.Gurfeinc, 2018 Summary of the Invention [Problem to be solved by the invention]

[0016] The present invention provides an electromagnetic device for a pulsating electromagnetic field treatment device, which includes a magnetic field generating module having two or more coil electromagnets and inner and outer plates made of ferromagnetic material to maximize the attractive and repulsive forces between the electromagnets as a magnetic field generating unit, which is a core component of treatment in various treatment devices that use pulsating electromagnetic fields, and a method for driving the electromagnetic device, in which the magnetic field generating modules are arranged in a horizontal or vertical space with their central axes aligned, and the magnetic force is transmitted over long distances with low power through the attractive and repulsive forces between the magnetic field generating modules on the other side.

[0017] Another object of the present invention is to provide a pulsating electromagnetic field generator and a method for operating the same, which can be used as a pulsating electromagnetic field generating module (or device, element, etc.) applicable to a PEMF (pulsating electromagnetic field) treatment device, for example, by controlling long-distance magnetic force transmission and magnetic field generation area using paired electromagnets, forming a paired electromagnet unit or device using a multi-layer PCB pattern, forming an electromagnet unit using a permanent magnet and a coil, forming a pulsating electromagnetic field generating unit through rotation of the permanent magnet, and performing operations such as voltage control frequency and pulsating electromagnetic field synchronization using a trigger switch. [Means for solving the problem]

[0018] The pulsating electromagnetic field generating module (or unit, device, element, component, etc.) according to an embodiment of the present invention refers to an electromagnet unit consisting of two or more coil electromagnets, and the electromagnet unit can transmit magnetic force to a specified long distance that exceeds a reference value by applying the repulsive and attractive forces of the coil electromagnets.

[0019] The coil electromagnet may include a coil winding wound around a cylindrical frame, a pair of ferromagnetic cores positioned at the center of the coil winding to transmit a magnetic field generated by a current applied to the coil winding in a specified direction, a ferromagnetic one-side plate disposed on one side of the ferromagnetic cores to transmit the magnetic force transmitted from the ferromagnetic cores to the specified long distance, and a ferromagnetic other-side plate disposed on the other side of the ferromagnetic cores to connect the multiple ferromagnetic cores to increase the magnetic force of the one-side plate.In addition, the coil electromagnet may include a plurality of permanent magnets with a fixed magnetic force direction between the multiple coil electromagnets to transmit the magnetic force over a longer distance.

[0020] The one-side plate may include a plurality of plates respectively connected to one side of the plurality of ferromagnetic cores, and the plurality of plates may be configured to be separated from each other at predetermined intervals.

[0021] The other plate may be a single plate that connects the other sides of the plurality of ferromagnetic cores and faces the one plate.

[0022] The pulsating electromagnetic field generator can modulate the frequency of a pulse signal having a specified frequency and amplitude to transmit the magnetic force to the specified long distance.

[0023] The pulsating electromagnetic field generator includes at least two electromagnet units, and the two electromagnet units each generate a repulsive force, thereby transmitting the magnetic force to the designated long distance.

[0024] The permanent magnets are positioned between the coil electromagnets and can transmit magnetic force over a longer distance by utilizing the repulsive force between the adjacent coil electromagnets.

[0025] In addition, a method for driving an electromagnetic field generating module according to an embodiment of the present invention includes a step of setting the polarity of a plurality of coil electromagnets to align the starting points at which attractive and repulsive forces are generated with the other or adjacent electromagnetic field generating module, and a step of controlling the operation and stop times of all the coil electromagnets with a trigger switch.

[0026] The pulsating electromagnetic field generator according to an embodiment of the present invention further includes an electromagnet unit that generates attractive and repulsive forces between a plurality of coil electromagnets, each of which is configured in the form of a coil wound around a core, and adjusts the magnetic force F generated by the plurality of coil electromagnets, and an electromagnet operation switch unit that adjusts at least one of the voltage and frequency applied to each of the plurality of coil electromagnets.

[0027] The electromagnet units may include a first electromagnet unit including a pair of first and second coil electromagnets to generate attractive and repulsive forces between the first and second coil electromagnets, and a second electromagnet unit including a pair of third and fourth coil electromagnets to generate attractive and repulsive forces between the third and fourth coil electromagnets and also generate attractive and repulsive forces between the first electromagnet units.

[0028] The pulsating electromagnetic field generator may further include an electrode control unit that controls the magnetic polarity to be changed to an alternating current form by changing the direction of the current applied to the first electromagnet unit and the second electromagnet unit.

[0029] The electromagnet operating switch unit may include a trigger switch that simultaneously turns on or off the first electromagnet unit and the second electromagnet unit.

[0030] The electromagnet unit may include one side plate composed of a plurality of plates separated from each other on one side of the first coil electromagnet and the second coil electromagnet, and another side plate composed of one plate connecting other sides of the first coil electromagnet and the second coil electromagnet to each other on the other side of the first coil electromagnet and the second coil electromagnet.

[0031] The electromagnet unit may include a permanent magnet provided between one side plate of the first coil electromagnet and one side plate of the second coil electromagnet to transmit the magnetic force over a long distance.

[0032] The plurality of coil electromagnets may be configured by conductive patterns formed on a multi-layer printed circuit board (PCB).

[0033] In addition, a method for driving a pulsating electromagnetic field generator according to an embodiment of the present invention may include a step of adjusting a magnetic force F generated by a plurality of coil electromagnets, each of which is configured such that an electromagnet unit has a coil wound around a core, by generating attractive and repulsive forces between the plurality of coil electromagnets, and a step of adjusting at least one of a voltage and a frequency applied to each of the plurality of coil electromagnets by an electromagnet operation switch unit.

[0034] The adjusting of the magnetic force may include a step of causing a first electromagnet unit including a pair of first and second coil electromagnets to generate attractive and repulsive forces between the first and second coil electromagnets, and a step of causing a second electromagnet unit including a pair of third and fourth coil electromagnets to generate attractive and repulsive forces between the third and fourth coil electromagnets, and also generate attractive and repulsive forces between the first electromagnet units.

[0035] The driving method may further include a step of controlling an electrode control unit to change the magnetic polarity by changing the direction of current applied to the first electromagnet unit and the second electromagnet unit, respectively, and to change the magnetic polarity to an AC form.

[0036] The adjusting of at least one of the voltage and the frequency may include simultaneously turning on or off the first electromagnet unit and the second electromagnet unit using a trigger switch constituting the electromagnet operation switch unit.

[0037] The electromagnet unit may include one side plate composed of a plurality of plates separated from each other on one side of the first coil electromagnet and the second coil electromagnet, and another side plate composed of one plate connecting other sides of the first coil electromagnet and the second coil electromagnet to each other on the other side of the first coil electromagnet and the second coil electromagnet.

[0038] The electromagnet unit may include a permanent magnet provided between one side plate of the first coil electromagnet and one side plate of the second coil electromagnet to transmit the magnetic force over a long distance.

[0039] The plurality of coil electromagnets may be configured by conductive patterns formed on a multi-layer printed circuit board (PCB). [Effects of the Invention]

[0040] According to an embodiment of the present invention, the size and power consumption of the electromagnetic field generating module applied to the pulsating electromagnetic field can be minimized, thereby minimizing the size of the treatment device, and the operating and stopping times of each coil electromagnet can be synchronized to maximize the time during which multiple coil electromagnetic field generating modules interact with each other, ultimately improving the treatment effect. [Brief explanation of the drawings]

[0041] [Figure 1] 1 is a diagram illustrating the mechanism of cell activation by a pulsating electromagnetic field. [Figure 2] 1 is a diagram illustrating treatment devices that apply pulsating electromagnetic fields from MBST (A), Medtec (B), and SE Therapies (C) and the shape of the loop coils inside the devices. [Figure 3] 1 is a diagram illustrating the configuration of a conventionally proposed coil electromagnet; [Figure 4] FIG. 1 is a perspective view of an electromagnetic field generating unit composed of two coil electromagnets. [Figure 5] FIG. 5 is a cross-sectional view of the electromagnetic field generating unit of FIG. [Figure 6] This is a cross-sectional view in which a permanent magnet 223 is applied between multiple coil electromagnets. [Figure 7] FIG. 1 is a cross-sectional view of an electromagnetic field generating unit composed of multiple coil electromagnets. [Figure 8] 10 is an illustrative view of the flow of magnetic force when a plurality of electromagnetic field generating units are arranged three-dimensionally. FIG. [Figure 9] FIG. 4 is a diagram of an AC signal applied to a coil electromagnet. [Figure 10] FIG. 2 is a logic diagram of an H-bridge circuit according to an embodiment of the present invention. [Figure 11] This is a CAE image of magnetic force transmission due to the repulsive force generated by the electromagnetic field generating unit. [Figure 12] This is a CAE image of magnetic force transmission due to the gravitational force generated by the electromagnetic field generating unit. [Figure 13] FIG. 1 is a system block diagram for controlling multiple electromagnetic field generating units. [Figure 14] FIG. 10 is a perspective view of an electromagnet unit according to another embodiment of the present invention. [Figure 15] FIG. 10 is a cross-sectional view of an electromagnet unit according to another embodiment of the present invention. [Figure 16] This is a CAE image of magnetic force transmission due to the repulsive force generated by the electromagnet unit in Figures 14 and 15. [Figure 17] This is a CAE image of magnetic force transmission due to the attractive force generated by the electromagnet unit in Figures 14 and 15. [Figure 18] FIG. 10 is a cross-sectional view of a multilayer PCB pattern type electromagnet unit according to another embodiment of the present invention. [Figure 19] 10 is a diagram showing an independent current-carrying pattern of a multilayer PCB according to another embodiment of the present invention; [Figure 20]10 is a diagram showing an integrated current-carrying pattern (always the same polarity induction) of a multilayer PCB according to another embodiment of the present invention. [Figure 21] 10 is a diagram showing an integrated current-carrying pattern (always different polarity induction) of a multilayer PCB according to another embodiment of the present invention. [Figure 22] 10 is a diagram illustrating a connection of current-carrying patterns on each layer of a multi-layer PCB according to another embodiment of the present invention. [Figure 23] This is a conceptual diagram of an electromagnet unit that utilizes a permanent magnet and a coil. [Figure 24] This is a cross-sectional view of an electromagnet unit that utilizes a permanent magnet and a coil. [Figure 25] This is a conceptual diagram of a pulsating electromagnetic field generating unit through the rotation of a permanent magnet. [Figure 26] This is a conceptual diagram of limiting pulsating electromagnetic fields using an enclosure. [Figure 27] FIG. 10 is a voltage control waveform diagram according to another embodiment of the present invention. [Figure 28] FIG. 10 is a system block diagram for synchronizing electromagnet generation according to another embodiment of the present invention. [Figure 29] 10 is a flowchart showing a process of controlling a trigger switch unit. [Figure 30] FIG. 10 is a logic diagram of an H-bridge circuit according to another embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0042] With respect to the embodiments of the inventive concepts disclosed herein, specific structural or functional descriptions are provided merely for purposes of describing the embodiments of the inventive concepts, which may be embodied in many different forms and are not limited to the embodiments set forth herein.

[0043] Because the embodiments of the inventive concept may be modified in various ways and may have various forms, the embodiments will be illustrated in the drawings and described in detail herein, but this is not intended to limit the embodiments of the inventive concept to the particular disclosed form, and includes all modifications, equivalents, and alternatives falling within the spirit and technical scope of the present invention.

[0044] Terms such as "first" or "second" may be used to describe various components, but the components should not be limited by these terms. The terms are used only to distinguish one component from another, for example, a first component may be called a second component, and similarly, a second component may be called a first component, without departing from the scope of the inventive concept.

[0045] When a component is referred to as being "coupled" or "connected" to another component, it should be understood that the component may be directly coupled or connected to the other component, but that there may be other components in between. Conversely, when a component is referred to as being "directly coupled" or "directly connected" to another component, it should be understood that there are no other components in between. Other expressions describing the relationship between components, such as "between" and "immediately between," or "adjacent to" and "directly adjacent to," should be interpreted similarly.

[0046] The terms used in this specification are merely used to describe specific embodiments and are not intended to limit the present invention. The singular expressions include the plural expressions unless the context clearly dictates otherwise. In this specification, the terms "comprise" or "have" are intended to specify the presence of embodied features, numbers, steps, operations, components, parts, or combinations thereof, and do not preclude the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0047] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art to which this invention belongs. Terms as defined in commonly used dictionaries should be interpreted to have a meaning consistent with the meaning they have in the context of the relevant art, and should not be interpreted in an idealized or overly formal sense unless expressly defined herein.

[0048] In the drawings, the thicknesses of layers and regions may be exaggerated for clarity. When a layer is referred to as being "on" another layer or substrate, or as being bonded or adhered to another layer or substrate, it may be formed directly on the other layer or substrate, or there may be a third layer interposed therebetween. Like reference numbers refer to like elements throughout the specification.

[0049] Terms such as upper end, lower end, top surface, bottom surface, front surface, rear surface, upper portion, and lower portion are used to distinguish the relative positions of components. For example, if the upper side of a drawing is designated as the upper side and the lower side of a drawing as the lower side for convenience, in practice the upper side may be designated as the lower side and the lower side may be designated as the upper side without departing from the scope of the present invention. Furthermore, components in the drawings are not necessarily drawn to scale, and for example, the size of some components in the drawings may be exaggerated compared to other components to facilitate understanding of the present invention.

[0050] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0051] As shown in FIG. 13, a pulsating electromagnetic field generator 200 according to an embodiment of the present invention includes some or all of an electromagnet unit 201, an electrode control unit 202, a power control unit 203, and an electromagnet operation switch unit 204.

[0052] Here, the meaning of "including part or all" is not significantly different from that described above. The electromagnet unit 201 generates a magnetic field when a current is applied to it, and the electrode control unit 202 changes the direction of the current applied to the electromagnet unit 201 to change the magnetic polarity of the electromagnet unit 201 and induce an AC waveform. The power control unit 203 controls the amount of voltage and current applied to the electromagnet unit 201 to control the magnitude of the electromagnetic force. The electromagnet operation switch unit 204, i.e., the trigger switch, performs a switch function that allows multiple electromagnet units to start and stop simultaneously. The MCU 101 of the control unit 100 controls the on / off time of the electromagnet operation switch unit 204 to implement the operating hertz (Hz). The electromagnet unit 201 according to an embodiment of the present invention may include multiple electromagnet units, including first to fourth electromagnet units 201-1 to 201-4. When applied to the user's knee, the electromagnet units may be provided to be positioned above, below, left, and right. The pulsating electromagnetic field generator 200 operates to activate cells.

[0053] 4 and 5, the electromagnet unit 201 of the pulsating electromagnetic field generator 200 is configured with two or more coil electromagnets 210, i.e., in a plural form, and the magnetic force can be transmitted over a longer distance by using the repulsive and attractive forces of the coil electromagnets 210. Here, a long distance can be defined as a distance exceeding a reference value. In this case, the electromagnet unit 201 includes a cylindrical frame 211 on which the coil winding 212 can be wound in a certain shape, the coil winding 212 made of a conductive material such as copper for generating a magnetic field when current is applied, a ferromagnetic core 213 located in the center of the coil for transmitting the magnetic field generated by the coil winding in a certain direction, a coated and insulated cable 214 connected to both ends of the coil winding 212 and to which current of positive (+) and negative (-) polarities is applied, a coil electromagnet 210 made of a ferromagnetic inner plate 220 facing the human joint and transmitting the magnetic force transmitted from the ferromagnetic core 213 over a long distance, a ferromagnetic outer plate (or other plate) 221 attached to the opposite side of the inner plate 220 and connecting the paired electromagnet cores 213 to each other to increase the magnetic force of the inner plate (or one plate) 220, and a fixing member 222 such as a screw for fixing the inner plate 220 and the outer plate 221 to the core 213 of the electromagnet unit. Here, the inside refers to the area of ​​the user's body joint that comes into contact with (or is close to) the skin.

[0054] In the electromagnet unit 201, the inner plate 220 connecting the core 213 of the coil electromagnet 210 is configured with a close distance of 1 to 2 mm, for example, two plates separated by a certain distance. The outer plate 221 connecting the core 213 of the coil electromagnet 210 in the electromagnet unit 201 is connected to a single body at the shortest distance without any separation distance. To transmit the magnetic force over long distances, the magnetic force takes on pulse signal characteristics. For this purpose, the unit may include a pulse signal generating unit 204 and an electrode control unit 202 that changes the magnetic polarity in an H-bridge configuration. This is clearly shown in FIGS. 9 and 10. Referring to FIG. 10, the H-bridge is configured with first through fourth switching elements in an "H" shape, based on the electromagnet unit. Each switching element is composed of an NPN (or N-channel) element and a PNP (or P-channel) element, such as a transistor or FET. 13, the MCU 101 can alternately operate the switching elements by applying a LOW signal and a HIGH signal to the first and fourth switching elements, or by applying a LOW signal and a HIGH signal to the third and second switching elements, thereby generating opposite polarities in the electromagnet unit. In other words, it can be considered that the polarity of magnetism is changed by operating diagonally opposite switching elements in a complementary manner.

[0055] Furthermore, the pulse applied to the electromagnet unit 201 to transmit magnetic force over long distances may be configured in the form of a carrier wave. Two or more electromagnet units 201 may be used in a treatment device, with a repulsive force generated on the inner plate 220 of one electromagnet unit and a repulsive force of the opposite polarity generated on the other electromagnet unit, thereby enabling magnetic force to be transmitted over longer distances. This is clearly shown in FIG. 9. Here, "configuring the pulse in the form of a carrier wave" means dividing a pulse signal (e.g., operating frequency) generated at a specified frequency and amplitude, as shown in FIGS. 9 and 13, or more precisely, dividing a pulse in a pulse generation section to generate a new pulse for use. This can be seen as modulating a preset pulse signal to transmit magnetic force over long distances and penetrate light deeply. For example, in an embodiment of the present invention, a pre-generated pulse signal of 20 to 50 Hz may be converted into a signal of approximately 2 MHz for use.

[0056] FIG. 9 is a diagram of an AC signal applied to the electromagnet unit, FIG. 10 is a logic diagram of an H-bridge circuit according to an embodiment of the present invention, FIG. 11 is a CAE image of magnetic force transmission due to the generation of repulsive force by the electromagnet unit of FIG. 2, and FIG. 12 is a CAE image of magnetic force transmission due to the generation of attractive force by the electromagnet unit.

[0057] The electrode control unit 202 is controlled to convert the pulse signal into an AC signal. The electrode control unit 202 is preferably configured with H-bridge circuit logic as shown in Fig. 10, and the direction of current applied to the electromagnet unit 201 is changed under the control of the MCU 101, thereby changing the polarity of the inner plate 220 of the electromagnet unit 201. The H-bridge circuit may operate in various modes depending on the embodiment of the present invention, and is not particularly limited to any one operating mode (e.g., complementary operation).

[0058] Electromagnet unit 201 has a plurality of coil electromagnets 210 therein. For example, as shown in Figures 6 and 7, two or more coil electromagnets 210-1 and 210-2 are applied to electromagnet unit 201. Coil electromagnet 210 has a coil wound several times in the form of winding 212 around non-magnetic cylindrical frame 211, and the end of the coil is connected to electrode control unit 202 by using cable 214 covered with an insulating material such as poly-based PVC. It is preferable that cylindrical frame 211 is made of a non-magnetic material such as plastic.

[0059] In addition, a ferromagnetic core 213 is applied to the center of the winding coil to transmit the magnetic field generated by the coil winding (or winding coil) 212 in a certain direction. That is, the magnetic polarity at both ends of the ferromagnetic core 213 is changed to NS or SN depending on the direction of current applied to the insulated cable 214 connected to both ends of the coil winding 212. An inner plate (or one side plate) 220 is connected to both ends of the ferromagnetic core 213 of adjacent coil electromagnets 210 in a pair toward the human body using fixed bodies 222-1 and 222-2, and an outer plate (or other side plate) 221 is connected and fixed to the opposite side of the inner plate using fixed bodies 222-3 and 222-4. To transmit magnetic force over longer distances, a permanent magnet 223 can be applied between the coil electromagnets as shown in FIG. 6, or multiple coil electromagnets can be connected and used as shown in FIG. 7.

[0060] Since the purpose is to transmit the magnetic force of the core 213 to the inner and outer plates 221 and 222 over long distances, each plate and fixed body is made of a ferromagnetic material with high relative permeability. Here, permeability means the ratio of magnetization, and is the ratio compared to the magnetic force transmission permeability in a vacuum; if this value is in the hundreds to thousands, the material is called a ferromagnetic material.

[0061] As shown in FIG. 4, if a current with positive and negative polarities is passed through the insulated cable 214-1 of the coil electromagnet 210-1 located on the left side of the electromagnet unit 201 and a current with negative and positive polarities is passed through the insulated cable 214-2 of the coil electromagnet 201-2 on the right side, then according to Ampere's right-hand rule, an N pole is induced in the inner plate 220-1 of the left coil electromagnet 210-1 and an N pole is induced in the inner plate 220-2 of the right coil electromagnet 210-2.

[0062] In this case, as shown in the CAE simulation analysis results in Figure 11, the magnetic forces applied to the two inner plates are in the same direction, so a repulsive force is generated between them, making it possible to transmit magnetic force over long distances.

[0063] If a current with positive and negative polarities were to flow through the insulated cable 214-2 of the right coil electromagnet 210-2, an S pole would be induced in the inner plate 220-2 of the right coil electromagnet, and an attractive force would be generated between the inner plates, causing them to attract each other. Even when such an attractive force is generated, as shown in the CAE simulation analysis result of Figure 12, it can be seen that the magnetic force generated between the inner plates also reaches a long distance because the cores 213-1 and 213-2 are connected through the outer plate 221.

[0064] The number and position of the electromagnet units 201 may vary depending on the anatomical characteristics of the treatment area. When the present invention is applied to the treatment of knee pain, it is preferable to position the electromagnet units 201 as shown in Figure 8 so as to face the articular cartilage at the lower end of the femur and the crescent cartilage of the bone, where cartilage wear and inflammation are likely to occur.

[0065] By arranging the electromagnet units 201 as described above and changing the magnetic force and polarity of each electromagnet unit 201, magnetic forces pass through the inflamed joint area in various directions and strengths as shown in FIG.

[0066] In particular, it can be seen that if a current is applied so as to generate a repulsive force and an attractive force is generated between the facing electromagnet units 201, the magnetic force can reach a greater distance.

[0067] FIG. 14 is a perspective view of an electromagnet unit according to another embodiment of the present invention, FIG. 15 is a cross-sectional view of an electromagnet unit according to another embodiment of the present invention, FIG. 16 is a CAE image of magnetic force transmission due to repulsive force generation in the electromagnet units of FIGS. 14 and 15, and FIG. 17 is a CAE image of magnetic force transmission due to attractive force generation in the electromagnet units of FIGS. 14 and 15.

[0068] As shown in Figures 14 and 15, the configuration of electromagnet unit 201' according to another embodiment of the present invention is not significantly different from that of electromagnet unit 201 shown in Figures 4 and 5. However, this embodiment of the present invention may be understood as a re-illustration of electromagnet unit 201 shown in Figures 4 and 5 to explain the operation related to long-distance magnetic force transmission using paired electromagnets. Therefore, since the details related to electromagnet unit 201' according to another embodiment of the present invention are not significantly different from those of electromagnet unit 201 shown in Figures 4 and 5, the details will be substituted with those details.

[0069] Briefly again, the electromagnet unit 201′ may include a coil winding 212 that generates a magnetic force when current is applied, a cylindrical frame 211 on which the coil winding can be wound in a certain shape, a copper coil winding 212 that generates a magnetic field when current is applied, a ferromagnetic (magnetic) core 213 located in the center of the coil to transmit the magnetic field generated by the copper coil winding in a certain direction, a coated and insulated cable 214 connected to both ends of the coil winding and to which a positive (+) and negative (+) DC power supply and current are applied, a ferromagnetic inner plate 220 that faces the person's joint and transmits the magnetic force transmitted from the ferromagnetic core 213 over a long distance, a ferromagnetic outer plate 221 that is applied to the opposite side of the ferromagnetic inner plate 220 and connects the cores 213 of the coil electromagnets 210 that are configured as a pair within the electromagnet unit 201 to each other, thereby increasing the magnetic force of the inner plate, and a fixing member 222 such as a screw for fixing the inner plate and the outer plate to the core 213 of the electromagnet unit.

[0070] When a magnetic field is generated using a pair-type electromagnet unit 201' as shown in Figures 14 and 15, repulsive force between the electromagnets can be transmitted over a longer distance, and attractive force between the electromagnets can be controlled to a constant range. That is, when repulsive force between the electromagnets is generated by controlling the direction of current applied to the coil, the same polarity is generated on the inner plate 220 and the outer plate 221 as shown in Figure 16, causing magnetic forces to push each other, enabling long-distance magnetic force transmission. When attractive force between the electromagnets is generated by controlling the direction of current applied to the coil, opposite polarities are generated on the inner plate 220 and the outer plate 221, limiting the range of magnetic force generation. Since the outer plate is not separable, it increases the magnetic force of the inner plate. The pair-type electromagnet unit 201' is preferably configured in pairs of 2, 4, or 6, etc., to generate attractive and repulsive forces between them. The inner plates 220 provided in pairs are spaced apart at a fixed distance from each other, and the outer plates 221 connect the cores 213 provided in pairs.

[0071] This solves the problem of the prior art, where the magnetic force rapidly decreases with distance in a pulsating electromagnetic field generator applied to a pulsating electromagnetic field treatment device, which uses a loop wire coil, and therefore requires a large amount of power to transmit the magnetic force over long distances (using the electromagnetic force generated by winding various copper coils and applying current), and also solves the problem of not being able to limit the range of magnetic force generation because the pulsating electromagnetic field generator applied to a pulsating electromagnetic field treatment device is in the form of a loop wire coil. That is, in another embodiment of the present invention, the attractive and repulsive forces of the paired electromagnet units 201' are utilized, making it possible to transmit magnetic force over long distances or limit the magnetic force to a certain range as needed.

[0072] Figure 18 is a cross-sectional view of a multilayer PCB pattern type electromagnet unit according to another embodiment of the present invention, Figure 19 is a drawing showing an independent current conduction pattern of a multilayer PCB according to another embodiment of the present invention, Figure 20 is a drawing showing an integrated current conduction pattern (always the same polarity induction) of a multilayer PCB according to another embodiment of the present invention, Figure 21 is a drawing showing an integrated current conduction pattern (always different polarity induction) of a multilayer PCB according to another embodiment of the present invention, and Figure 22 is a drawing for explaining the connection of each layer current conduction pattern of a multilayer PCB according to another embodiment of the present invention.

[0073] In the case of a thin pulsating electromagnetic field medical device with low magnetic strength, a small magnetic force generator must be provided. For this reason, in another embodiment of the present invention, the function of a small electromagnet unit can be realized by configuring the current-carrying pattern in a spiral curve type to allow current to flow through the inner layer of the multi-layer PCB 310. As in the above-mentioned paired electromagnet unit 201', by applying the inner plate 320 and outer plate 321, control through the attractive and repulsive forces between the paired magnetic force generators is possible.

[0074] The conductive patterns in a multi-layer PCB can be interconnected as shown in Figure 22 to increase the strength of the magnetic force. In a typical PCB manufacturing process, each layer's pattern is connected through via holes and plating processes. PCBs are generally available in single-sided, double-sided, four-layer, and six-layer configurations, and the number of inner layers can be increased. Depending on the polarity and purpose of the magnetic field, the conductive patterns in pairs can be configured independently as shown in Figure 19, or can be connected to each other and integrated in a closed circuit format as shown in Figures 20-21. Implementing an independent conductive pattern as shown in Figure 19 has the advantage of being able to control each polarity as needed, but the disadvantage is that the number of electromagnet units that must be controlled increases. Applying an integrated conductive pattern as shown in Figures 20-21 has the characteristic of always displaying the same polarity or different polarities, but reduces the number of electromagnet units that must be controlled, thereby reducing the load on the control unit.

[0075] 18 shows a cross section of a paired electromagnet unit using a multilayer PCB pattern according to another embodiment of the present invention. The PCB-type magnetic force generating unit 301 using multilayer current-carrying lines includes a current-carrying pattern 311 (usually made of copper and having a spiral curved shape) embodied in a multilayer PCB, a ferromagnetic inner plate 320 for transmitting the magnetic force transmitted from the current-carrying pattern 311 over a long distance toward the direct treatment area, a ferromagnetic outer plate 321 attached to the opposite side of the ferromagnetic inner plate 320 for connecting the magnetic forces generated by the current-carrying lines 311 that are paired within the PCB-type magnetic force generating unit 301 to increase the magnetic force of the inner plate, and a ferromagnetic core pin 322 located in the center of the coil for transmitting the magnetic field generated by the current-carrying pattern 311 in a certain direction; in this case, the inner plate and outer plate may be connected and fixed by the core pin.

[0076] FIG. 23 is a conceptual diagram of an electromagnet unit that utilizes a permanent magnet and a coil, and FIG. 24 is a cross-sectional view of an electromagnet unit that utilizes a permanent magnet and a coil.

[0077] When a pulsating electromagnetic field needs to be generated at low power, a permanent magnet-type electromagnet unit 401 using a permanent magnet and a coil can be used, as shown in FIG. 23. A permanent magnet always generates a constant magnetic force, but an electromagnetic field with the opposite polarity can be generated through voltage control, as described above. As a result, the magnetic force strength of the permanent magnet changes at a constant frequency, stimulating the treatment area. The permanent magnet-type electromagnet unit 401 can be used with a cylindrical frame 411, as shown in FIG. 24, to wind the coil winding 410 in a specific shape. The cylindrical frame 411 is preferably made of a non-magnetic material such as plastic. If necessary, the cylindrical frame 411 can be made of a ferromagnetic metal material. Using a ferromagnetic metal material allows for greater control of the permanent magnet strength and magnetic field range.

[0078] As shown in FIG. 24, a permanent magnet type electromagnet unit 401 according to another embodiment of the present invention may include a coil winding 410 that generates a magnetic force when a current is applied thereto, a cylindrical frame 411 on which the coil winding can be wound in a predetermined shape, a coated insulated cable 414 connected to both ends of the coil winding and to which a positive DC power supply and a current are applied, and a permanent magnet 420 that constantly generates a magnetic force.

[0079] FIG. 25 is a conceptual diagram of a pulsating electromagnetic field generating unit using the rotation of a permanent magnet, and FIG. 26 is a conceptual diagram of pulsating electromagnetic field restriction using an enclosure.

[0080] The pulsating electromagnetic field generating unit 501, which generates a pulsating electromagnetic field through the rotation of a permanent magnet, rotates the permanent magnet at a constant RPM using a motor to generate a pulsating electromagnetic field with low power. The motor's rotation RPM is preferably several tens to several thousand RPM so that the pulsating electromagnetic field changes at a frequency of several to several tens of Hz. A bracket made of a non-magnetic material such as plastic can be used to connect the permanent magnet to the motor. Unlike the rotating permanent magnet, a ferromagnetic enclosure 520 can be used, which is fixed to the set and has an opening in a certain direction (the treatment area). This is best shown in FIG. 26. This can block the transmission of the magnetic field to unwanted areas. The enclosure has one or more openings 521, and the opening direction preferably coincides with the polarity direction of the permanent magnet.

[0081] More specifically, as shown in Figures 25 and 26, the pulsating electromagnetic field generating unit 501 through the rotation of a permanent magnet may include a permanent magnet 420 that constantly generates magnetic force, a motor 510 that rotates the permanent magnet to induce changes in magnetic force, a bracket 511 that fixes the permanent magnet and connects it to the motor, an enclosure 520 made of a ferromagnetic material that has an opening area in a certain direction and controls the direction of diffusion of the pulsating electromagnetic field generated by the rotation of the permanent magnet, and an opening hole 521 that allows magnetic force to pass through.

[0082] FIG. 27 shows a voltage control waveform diagram according to another embodiment of the present invention.

[0083] As mentioned above, the strength of the electric field E can vary depending on the voltage waveform applied to the electromagnetic field generator. If the applied voltage / current waveform is continuously changed to alternately change the polarity of the magnetic field at a constant Hz, energy efficiency will decrease due to the generation of back electromotive force at the inflection points. Therefore, in another embodiment of the present invention, a pulsating electromagnetic field is generated by varying the voltage polarity at a constant cycle, as shown in Figure 27.

[0084] For example, if a north pole appears at the treatment site initially (or at a minimum) due to the current flow, the voltage direction is reversed after a certain time, and the polarity of the treatment site alternates to a south pole. To prevent back electromotive force from occurring at the point where the polarity is inverted, a rest period of several microseconds to several milliseconds can be applied to the voltage inflection section, as shown in FIG. 27. Furthermore, the voltage direction can be changed at a regular cycle, and a short waveform burst frequency (e.g., several kilohertz to several megahertz) can be applied to each section. When a pulsating electromagnetic field is generated using a different burst frequency for each regular cycle of the voltage direction, as in the embodiment of the present invention, long-distance transmission with low power is possible.

[0085] FIG. 28 is a system block diagram for synchronizing electromagnet generation according to another embodiment of the present invention, FIG. 29 is a flowchart showing a process for controlling a trigger switch unit, and FIG. 30 is a logic diagram of an H-bridge circuit according to another embodiment of the present invention.

[0086] As mentioned above, when multiple electromagnet modules (here, a module can refer to an IC chip with integrated circuits, or a board in which a chip and its peripheral circuits are configured on a PCB substrate, or a module can be a component, element, device, etc.) are controlled by a single microcomputer (MICOM), a desynchronized section occurs for each electromagnet, reducing the efficiency of superposition and cancellation between the magnetic forces generated by each electromagnet. In an embodiment of the present invention, as seen in Figure 29, a trigger switch unit 6 can be added between the MICOM and electromagnet polarity control units 2 (2-1 to 2-4) that make up the control unit 1.

[0087] The trigger switch unit 6 simultaneously sets and operates the polarities of the polarity control units 2 (2-1 to 2-4), thereby allowing a number of polarity control units to operate simultaneously, and synchronizing the magnetic force output of the electromagnet units.

[0088] The step of controlling the trigger switch unit 6 may be performed as shown in Figure 29. In particular, the trigger switch unit may be controlled taking into consideration the pause period of the input voltage described above. In more detail, the step of controlling the pulsating electromagnetic field frequency using the trigger switch unit 6 or the trigger switch unit may include a step of setting the polarity of each Electrode Control Unit (S1600), a step of simultaneously turning on through the Trigger Switch Unit (S1610), a step of simultaneously turning off through the Trigger Switch Unit (S1620), a step of maintaining the off state (pause period) (S1630), a step of setting the polarity of each Electrode Control Unit (S1640), a step of simultaneously turning on through the Trigger Switch Unit (S1650), a step of simultaneously turning off through the Trigger Switch Unit (S1660), and a step of maintaining the off state (pause period) (S1670).

[0089] FIG. 30 shows an H-bridge circuit logic diagram, which may be understood as a redrawing of FIG. 10 for ease of explanation. Therefore, the details related to FIG. 30 will be substituted for those described in FIG. 10. Briefly, the H-bridge is configured with first through fourth switching elements in an "H" shape, based on the electromagnet unit. Each switching element is composed of an NPN (or N-channel) element and a PNP (or P-channel) element, such as a transistor or FET. The MCU 101 in FIG. 13 alternately operates the switching elements by applying LOW and HIGH signals to the first and fourth switching elements, or by applying LOW and HIGH signals to the third and second switching elements, thereby generating opposite polarities in the electromagnet unit. In other words, it can be seen as changing the polarity of the magnetism by operating diagonally opposite switching elements in a complementary manner.

[0090] In addition to the above, the pulsating electromagnetic field generating module (or device, etc.) applied to the pulsating electromagnetic field treatment device according to another embodiment of the present invention can perform various operations, and other detailed contents have been fully explained previously, so the contents thereof will be substituted.

[0091] Although the preferred embodiments have been illustrated and described above, the present invention is not limited to the specific embodiments described above, and various modifications may be made by a person skilled in the art to which the invention pertains without departing from the gist of the present invention as claimed in the claims, and such modifications should not be understood separately from the technical ideas and perspectives of the present invention.

[0092] Meanwhile, even if all components constituting an embodiment of the present invention are described as being combined as a single unit or operating in combination, the present invention is not necessarily limited to such an embodiment. That is, within the scope of the present invention, all components may be selectively combined as one or more units. Furthermore, all components may be embodied as individual independent pieces of hardware, or some or all of the components may be selectively combined to implement a computer program having program modules that perform some or all of the functions combined in one or more pieces of hardware. The codes and code segments constituting the computer program would be easily construed by those skilled in the art. Such a computer program may be stored in a non-transitory computer-readable medium and read and executed by a computer to implement an embodiment of the present invention.

[0093] Here, the non-transitory readable recording medium refers to a medium that stores data semi-permanently and can be read by a device, rather than a medium that stores data for a short period of time such as a register, cache, memory, etc. Specifically, the above-mentioned program may be provided by being stored in a non-transitory readable recording medium such as a CD, DVD, hard disk, Blu-ray disc, USB, memory card, ROM, etc.

[0094] While preferred embodiments of the present invention have been illustrated and described above, the present invention is not limited to the specific embodiments described above, and various modifications may be made by a person skilled in the art to which the invention pertains without departing from the gist of the present invention as claimed in the claims, and such modifications are not to be understood individually from the technical ideas and perspectives of the present invention.

Claims

1. an electromagnet unit that generates attractive and repulsive forces between a plurality of coil electromagnets, each of which is configured in the form of a coil wound around a core, to adjust a magnetic force (F) generated by the plurality of coil electromagnets; and an electromagnet operation switch unit for adjusting at least one of the voltage and frequency applied to each of the plurality of coil electromagnets; A pulsating electromagnetic field generating device.

2. The electromagnet unit includes: a first electromagnet unit including a pair of first and second coil electromagnets, generating attractive and repulsive forces between the first and second coil electromagnets; and a second electromagnet unit including a pair of third and fourth coil electromagnets, generating attractive and repulsive forces between the third and fourth coil electromagnets, and also generating attractive and repulsive forces between the first electromagnet units; 2. The pulsating electromagnetic field generating device according to claim 1.

3. an electrode control unit that controls the magnetic polarity to be changed to an AC form by changing the direction of the current applied to the first electromagnet unit and the second electromagnet unit, respectively; 3. The pulsating electromagnetic field generating device according to claim 2.

4. The electromagnet operation switch unit includes a trigger switch that simultaneously turns on or off the first electromagnet unit and the second electromagnet unit.

2. The pulsating electromagnetic field generating device according to claim 1.

5. The electromagnet unit includes: One-side plates are separated from one another on one side of the first coil electromagnet and the second coil electromagnet, and are composed of a plurality of plates; and an other-side plate that connects the other side of the first coil electromagnet and the other side of the second coil electromagnet to each other and is configured as one plate; 2. The pulsating electromagnetic field generating device according to claim 1.

6. The electromagnet unit includes a permanent magnet provided between one side plate of the first coil electromagnet and one side plate of the second coil electromagnet to transmit the magnetic force over a long distance.

6. The pulsating electromagnetic field generating device according to claim 5.

7. The plurality of coil electromagnets are formed by conductive patterns formed on a multi-layer printed circuit board (PCB).

2. The pulsating electromagnetic field generating device according to claim 1.

8. The electromagnet unit generates attractive and repulsive forces between a plurality of coil electromagnets, each of which is configured in the form of a coil wound around a core, thereby adjusting the magnetic force (F) generated by the plurality of coil electromagnets; and an electromagnet operation switch unit adjusting at least one of a voltage and a frequency applied to each of the plurality of coil electromagnets; A method for driving a pulsating electromagnetic field generating device.

9. The step of adjusting the magnetic force includes: a first electromagnet unit including a pair of first and second coil electromagnets generating attractive and repulsive forces between the first and second coil electromagnets; and a second electromagnet unit including a pair of third and fourth coil electromagnets generates attractive and repulsive forces between the third and fourth coil electromagnets, and also generates attractive and repulsive forces between the first electromagnet unit; A method for driving the pulsating electromagnetic field generator according to claim 8.

10. The electrode control unit controls the first and second electromagnet units to change the direction of the current applied to each of the first and second electromagnet units to change the magnetic polarity, and controls the magnetic polarity to change to an alternating current form. A method for driving the pulsating electromagnetic field generator according to claim 9.

11. The adjusting of at least one of the voltage and the frequency includes: a trigger switch constituting the electromagnet operating switch unit for simultaneously turning on or off the first electromagnet unit and the second electromagnet unit; A method for driving the pulsating electromagnetic field generator according to claim 8.

12. The electromagnet unit includes: One-side plates are separated from one another on one side of the first coil electromagnet and the second coil electromagnet, and are composed of a plurality of plates; and an other-side plate that connects the other side of the first coil electromagnet and the other side of the second coil electromagnet to each other and is configured as one plate; A method for driving the pulsating electromagnetic field generator according to claim 8.

13. The electromagnet unit includes a permanent magnet provided between one side plate of the first coil electromagnet and one side plate of the second coil electromagnet to transmit the magnetic force over a long distance. A method for driving the pulsating electromagnetic field generator according to claim 12.

14. The plurality of coil electromagnets are formed by conductive patterns formed on a multi-layer printed circuit board (PCB). A method for driving the pulsating electromagnetic field generator according to claim 8.

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