Electromagnetic stimulation device and booster thereof

Abstract

To provide an electromagnetic stimulator and a booster thereof.SOLUTION: In the present invention, the voltage boost device is provided for a DC high voltage power supply that uses a plurality of first and second current-direction limiting elements and first and second energy storage elements to store energy to generate electromagnetic stimulation. Further, the first current-direction limiting element and the first energy storage element are electrically connected in series with the external power supply, the first current-direction limiting element is connected in parallel with the second current-direction limiting element in a direction opposite to a current limiting direction of the first current-direction limiting element, the second current-direction limiting element is connected in series with the second energy storage element, and the first current-direction limiting element and the second current-direction limiting element are turned on or off according to an input voltage polarity. The first and second energy storage elements are respectively charged by the external power supply in different cycles by switching a current direction, the second energy storage element charges the first energy storage element from the external power supply during a charging process to have a voltage across the first energy storage element twice as high as that of the first energy storage element, and the second energy storage elements are connected in series with each other to be used for an output application.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to the field of biological electromagnetic stimulation devices, and more particularly to a booster device that converts an external AC power source into a DC high-voltage power source capable of providing sufficient electromagnetic stimulation strength, and an electromagnetic stimulation device using the same. By replacing the traditional linear transformer in this way, it is possible to maintain the effectiveness of electromagnetic stimulation while also achieving advantages such as a lighter device. [Background technology]

[0002] Several electromagnetic stimulation devices have been proposed for neuroscience research and the treatment of neuropsychiatric disorders. These devices use alternating magnetic fields to simulate electrical signals and affect various parts of the body. For example, transcranial magnetic stimulation (TMS) devices employ noninvasive neuromodulation and control technology, generating magnetic field changes via magnetic coils placed on the scalp to affect cerebral activity. Generally, the critical stimulation parameters for each part of the body can be varied based on the target area, treatment strategy, stimulation depth, and neural condition. However, currently, commonly used electromagnetic stimulation devices in medical institutions still require extremely high voltages to generate high currents and effectively generate magnetic fields stimulating the cerebral or neural nervous system, activating neural sources and inducing neural action potentials. Taking TMS technology as an example, conventional voltages typically require at least 300 volts (V) or even several thousand volts to reach the desired stimulation threshold depending on the stimulation depth and neural condition. In addition, due to the specific nature of the human body as the target of stimulation, high voltage and high current are required. Furthermore, the optimal working frequency range for this stimulation is approximately 0.5-50 Hz. Therefore, because currently common electromagnetic stimulation devices meet the aforementioned high voltage, high current, and working frequency requirements, they are difficult to implement using existing electronic transformers. Instead, they can only be implemented using a traditional linear transformer. However, once this method is selected and used, the overall volume and weight of the device are limited by the linear transformer's design framework, making it difficult to miniaturize the device for use in fields such as general households. Therefore, frequent stimulation improvements are required, and unless the patient is able to repeatedly transition solely to medical care, numerous inconveniences remain in reality.

[0003] Meanwhile, several different types of electromagnetic stimulation devices have been proposed in the prior art. For example, (1) intensity-sacrificing type: This type operates on the premise that nerves cannot reach an action potential. This type of device is generally not considered a legitimate electromagnetic stimulation device, and most of the home electromagnetic stimulation devices currently on the market belong to this type. (2) frequency-sacrificing type: This type accumulates stimulation intensity at a relatively slow charging rate and does not exceed a frequency of 0.2 Hz, making it applicable only to extremely low frequencies. It is thought to be useful for various indications. While this was certainly a pioneering development in successfully miniaturizing electromagnetic stimulation devices, its operating and output conditions are limited, limiting its effectiveness in improving adaptive symptoms by simply stimulating the human body. (3) intensity-replacement type by frequency superposition: Related research has shown that low-intensity stimulation does not directly produce biological effects, but continuous high-frequency stimulation has been proposed to produce effects by superimposing biological effects. While the booster of this type of device does not require excessively high voltage, it must provide a large amount of current as a high-frequency output. Therefore, traditional linear transformers are the only option, resulting in large volume and weight. Even the most modest electromagnetic stimulation devices today still weigh approximately 20 kilograms. To address this weight, appropriate safety devices or rollers are often designed to facilitate placement and movement. Taking a 2000-watt traditional linear transformer as an example, the total weight of the transformer alone is approximately 15 kilograms. The main reason for this is that traditional linear transformers are essentially composed of metal components. In other words, 75% of the weight of an electromagnetic stimulation device is unavoidable due to the presence of these large iron blocks. This indirectly contributes to the continued difficulty of electromagnetic stimulation devices becoming widespread, and even to the difficulty of making them suitable for home use. Summary of the Invention [Problem to be solved by the invention]

[0004] Based on these considerations, the team of the present invention provides a lightweight electromagnetic stimulation device and a booster device that can be broadly classified as having a conventional operating method, which can boost commercial power, even to above 1,000 volts, and furthermore, can output energy that reaches an action potential that can sufficiently drive nerves, and can maintain a frequency of 0.5 Hz or higher for continuous operation, thereby replacing traditional linear transformers and improving the drawbacks of the above-mentioned conventional technologies.

[0005] The primary object of the present invention is to provide an electromagnetic stimulation device and its boosting device that utilizes the electronic characteristics of a basic voltage doubler consisting of two current direction limiting elements and two energy storage elements, and then achieves the effect of rectifying and boosting the voltage to a multiple value through a design and construction of a series or parallel connection, thereby providing a high-voltage DC power supply that can sufficiently generate the desired electromagnetic stimulation intensity, while also having the effect of maintaining a light overall weight. [Means for solving the problem]

[0006] To achieve the above object, the present invention discloses a multi-stage boost device for an electromagnetic stimulation device, which is electrically connected to an external power source having a periodically changing polarity to perform output boosting, and is formed by connecting a plurality of basic voltage doublers, each of which has a first current direction limiting element, a first energy storage element, a second current direction limiting element, and a second energy storage element, and the external power source is electrically connected to the plurality of basic voltage doublers, and the first current direction limiting element and the first energy storage element of each basic voltage doubler are electrically connected in series with the external power source, and the first current direction limiting element is connected in parallel with the second current direction limiting element having a current limiting direction opposite to that of the first current direction limiting element, and the second current direction limiting element is connected in series with the second energy storage element to form a second energy storage element. and a second current direction limiting element is positioned between the first current direction limiting element and the second current direction limiting element, wherein the first current direction limiting element and the second current direction limiting element of each of the basic voltage doublers are conductive or non-conductive according to the input voltage polarity and switch the current direction to charge the first energy storage element and the second energy storage element, respectively, in different cycles according to the external power source, and in the charging process of the second energy storage element, charge is provided from the external power source to the first energy storage element, causing the voltage across the second energy storage element to be twice that of the first energy storage element, and the second energy storage elements of the plurality of basic voltage doublers are connected in series with each other and used for output applications.

[0007] The first and second energy storage elements are either one of a capacitor, an inductor, or a battery, or a combination thereof. The first and second current direction limiting elements are either one of a diode or a switch, or a combination thereof. After a plurality of the second energy storage elements are connected in series with each other, the voltage across both ends is a DC voltage exceeding 700 volts.

[0008] In addition, a secondary object of the present invention is to provide such an electromagnetic stimulation device, which comprises a multi-stage voltage boosting device as described above and a stimulation unit electrically connected to the multi-stage voltage boosting device, thereby realizing the effect of stimulating the human body after voltage boosting.

[0009] The inductance value of the stimulation unit as a magnetic field output terminal is at least 1 microhenry (μH). The stimulation unit is wound with a copper wire coil or an aluminum wire coil. A magnetic field exceeding 0.5 Tesla (T) is generated on the surface of the stimulation unit at least once. A magnetic field exceeding 0.1 Tesla (T) and for a duration of less than 1 millisecond (ms) is generated on the surface of the stimulation unit three or more times in succession. [Effects of the Invention]

[0010] In summary, the present invention utilizes the electronic properties and arrangement of elements such as diodes or switches and capacitors or inductors to boost the low voltage input from the external power source, thereby converting it into a high-voltage DC power source that can sufficiently supply effective action potentials to the stimulation unit. That is, by designing the arrangement of assembly components, the present invention enables each of the first and second current direction limiting elements to be conductive or non-conductive according to the input voltage polarity, thereby switching the energy storage cycle time of each of the first and second energy storage elements, so that when each of the second energy storage elements reaches a steady-state charge, the voltage across it is expressed as a DC voltage twice the input peak voltage. Furthermore, a plurality of the second energy storage elements are connected in series, and the voltages across them are superimposed and used for output application. As a result, the multi-stage boosting device realizes the function of boosting voltage to multiple levels, and is used to ensure that the stimulation unit outputs sufficient biological stimulation intensity, replacing a traditional linear transformer and achieving the effects of improving the volume and weight of the entire device. Furthermore, the voltage superposition structure between the two ends of the multiple second energy storage elements reduces the voltage stress required to be withstood by each individual energy storage element, reducing the component costs of the electrical circuit and improving the stability of the electrical circuit.As a result, the present invention breaks through existing technical conventions by selecting only commonly found elements such as diodes or switches and capacitors or inductors as current direction limiting elements and energy storage elements, and after achieving a special electrical connection and matching relationship, it is possible to meet the requirements of a medical-grade electromagnetic stimulation device.At the same time, the selection and use of the multiple elements simultaneously achieves small volume, light weight, and fast charge and discharge speed, allowing for better working frequency to be maintained and the overall weight of the electromagnetic stimulation device to be reduced, among other effects. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is a schematic diagram illustrating a preferred embodiment of the connection between the multi-stage booster device of the present invention and an external power source; [Figure 2] 1 is an electrical circuit diagram of a preferred embodiment of the multistage booster device of the present invention connected to an external power source; [Figure 3A] 3 is a charging operation diagram of a preferred embodiment of the multi-stage booster device of the present invention connected to an external power source during a period of time; FIG. [Figure 3B] 3 is a charging operation diagram of a preferred embodiment of the multi-stage booster device of the present invention connected to an external power source during a period of time; FIG. [Figure 3C] 3 is a charging operation diagram of a preferred embodiment of the multi-stage booster device of the present invention connected to an external power source during a period of time; FIG. [Figure 3D] 3 is a charging operation diagram of a preferred embodiment of the multi-stage booster device of the present invention connected to an external power source during a period of time; FIG. [Figure 4] 1 is a schematic diagram illustrating the construction of a preferred embodiment of the electromagnetic stimulation device of the present invention connected to an external power source; DETAILED DESCRIPTION OF THE INVENTION

[0012] The contents of the present invention will be clearly understood by those skilled in the art from the following description with reference to the accompanying drawings.

[0013] 1 and 2, which respectively show a schematic diagram and an electrical circuit diagram of a preferred embodiment of a multi-stage voltage boost device according to the present invention, for connecting an external power source to the multi-stage voltage boost device. As shown in the figures, the multi-stage voltage boost device 10 of the electromagnetic stimulation device 1 is electrically connected to an external power source 2 having periodically changing polarity for boosting output applications. The multi-stage voltage boost device 10 is formed by connecting a plurality of basic voltage doublers 100. Each of the plurality of basic voltage doublers 100 further includes a first current direction limiting element 1000, a first energy storage element 1001, a second current direction limiting element 1002, and a second energy storage element 1003. The external power source 2 is electrically connected to the plurality of basic voltage doublers 100, and the first current direction limiting element 1000 and the first energy storage element 1001 of each of the basic voltage doublers 100 are electrically connected in series with the external power source 2, and the first current direction limiting element 1000 is connected in parallel with the second current direction limiting element 1002 whose current limiting direction is opposite to that of the first current direction limiting element 1000, and the second current direction limiting element 1002 is connected in series with a second energy storage element 1003, such that the second energy storage element 1003 is located between the first current direction limiting element 1000 and the second current direction limiting element 1002.

[0014] Following the previous electrical configuration, the first current direction limiting element 1000 and the second current direction limiting element 1002 of each basic voltage doubler 100 are conductive or non-conductive according to the input voltage polarity, switching the current direction to charge the first energy storage element 1001 and the second energy storage element 1003, respectively, at different cycles via the external power source 2. During the charging process of the second energy storage element 1003, the external power source 2 supplies charge to the first energy storage element 1001, causing the second energy storage element 1003 to have a voltage across it that is twice that of the first energy storage element 1001. The second energy storage elements 1003 of the basic voltage doublers 100 are connected in series with each other and used for output applications. In other words, according to the aforementioned electrical connection rules, the basic voltage doubler 100 can be continuously expanded in number, thereby reselecting the voltage across it to be used for terminal output applications after boosting.

[0015] In this embodiment, the first energy storage element 1001 and the second energy storage element 1003 are either one or a combination of a capacitor, an inductor, or a battery, and the first current direction limiting element 1000 and the second current direction limiting element 1002 are either one or a combination of a diode or a switch, such that the voltage across the plurality of second energy storage elements 1003 connected in series with each other is a DC voltage exceeding 700 V. For example, as shown in FIG. 2, the plurality of basic voltage doublers 100 may use each of the first energy storage element 1001 and each of the second energy storage elements 1003 as a capacitor, and each of the first current direction limiting element 1000 and each of the second current direction limiting element 1002 as a diode, to form the multi-stage voltage boost device 10 configured for 8x voltage, which includes four basic voltage doublers 100 as described below.

[0016] 1. The first basic voltage doubler 100: The first energy storage element 1001 (C1 -1 ) are connected to one end of the external power supply 2 and the first current direction limiting element 1000 (D1 -1 ) and D1 -1 The other end of D1 is connected to the other end of the external power source 2. -1 and C1 -1 is electrically expressed as a circuit connected in series with the external power supply 2, and C1 -1 and D1 -1 The connection point between the first second current direction limiting element 1002 (D2 -1 ) and is further connected to one end of D2 -1 The other end of the first second energy storage element 1003 (C2 -1 ) and D2 -1 is D1 -1 and C2 are connected in parallel to form an electrical circuit with opposite current limiting directions. -1 The other end of D1 -1and the contact between the external power source 2. -1 is, C2 -1 and C2 -1 D1 -1 and D2 -1 Thus, when the first basic voltage doubler 100 forming a voltage doubling electric circuit is assembled and the external power source 2 is a commercial power source and provides an input of a sinusoidal AC voltage with a peak value voltage of Vm, C2 -1 There is a voltage of 2Vm across both ends of the resistor.

[0017] 2. A second basic voltage doubler 100 connected to the first basic voltage doubler 100: In the same manner as the above electric circuit construction, a second voltage doubler electric circuit is formed and assembled, which is connected in parallel with the first basic voltage doubler 100. -2 ) are connected to the external power supply 2 and C1 -1 Between the first current direction limiting element 1000 and the second current direction limiting element 1000 (D1 -2 ) and D1 -2 The other end of the external power supply 2 and D1 -1 At the same time, C1 -2 and D1 -2 The connection point between the second current direction limiting element 1002 (D2 -2 ) and is further connected to one end of D2 -1 The other end of the second energy storage element 1003 (C2 -2 ) and C2 -2 The other end of C2 -1 , D1 -1 and D1 -2 C2 -2 The two ends of the resistor have a voltage of 2Vm.

[0018] 3. A third basic voltage doubler 100 connected to the first basic voltage doubler 100: Subsequently, a third double voltage electric circuit is formed and assembled. -3 ) at both ends of C1 -1 , D1 -1 and D2 -1 Between the first current direction limiting element 1000 (D1 -3 ) and D1 -3 Connect the other end to D2 -1 and C2 -1 At the same time, C1 -3 and D1 -3 The connection point between the third second current direction limiting element 1002 (D2 -3 ) and is further connected to one end of D2 -3 The other end of the third second energy storage element 1003 (C2 -3 ) and C2 -3 The other end of C2 -1 , D2 -1 and D1 -3 C2 -3 The two ends of the resistor have a voltage of 2Vm.

[0019] 4. The fourth basic voltage doubler 100 connected to the second basic voltage doubler 100: The fourth double voltage electrical circuit is completed. -4 ) at both ends of C1 -2 , D1 -2 and D2 -2 Between the first current direction limiting element 1000 (D1 -4 ) and D1 -4 Connect the other end to D2 -2 and C2 -2 At the same time, C1 -4 and D1 -4 The connection point between the fourth second current direction limiting element 1002 (D2 -4 ) and is further connected to one end of D2 -4 The other end of the fourth second energy storage element 1003 (C2 -4 ) and C2-4 The other end of C2 -2 , D2 -2 and D1 -4 C2 -4 The two ends of the resistor have a voltage of 2Vm.

[0020] As a result, the voltage value output from the multistage boost device 10 is C2 -3 , C2 -1 , C2 -2 and C2 -4 Since the plurality of second energy storage elements 1003 are connected in series to form a voltage across them, multi-stage boost device 10 can output a voltage of 8 Vm when no damage is involved. Therefore, when the commercial power supply serving as external power source 2 provides AC 110 V and the peak voltage Vm reaches 155 VDC, multi-stage boost device 10 can output a DC voltage of approximately 1200 V after operation, thereby adjusting the small voltage multiple input from external power source 2 to a high voltage that meets the requirements of electromagnetic stimulation device 1.

[0021] 3A to 3D, which are schematic diagrams illustrating charging operations during a cycle time of two preferred embodiments of the present invention, are also referred to. As shown in the figures, the AC voltage provided by the external power source 2 has a positive sine wave cycle of T1+T2 and a negative sine wave cycle of T3+T4, with one complete sine wave being one cycle (T). Therefore, the charging operations of the multiple basic voltage doublers 100 during each cycle time are repeated as follows:

[0022] 1. Figure 3A, at cycle time T1: When the external power source 2 provides an AC voltage ranging from 0 to a peak of +Vm to gradually generate a voltage difference at the input terminal of the multi-stage boost device 10, D2 -1 and D1 -2 is turned on, and the external power supply 2, C1 -1 , D2 -1 and C2 -1 One positive cycle charging circuit L1 -T1 At the same time, the external power source 2, C1 -2 and D1-2 One positive cycle charging circuit L2 -T1 This allows the current to flow through C1 by the end of the period T1. -1 , C2 -1 and C1 -2 energy flows into C1 -1 and C2 -1 The energy is stored so that it is half the peak value at C1 -2 The accumulated value is then peaked at .

[0023] 2. Figure 3B, at cycle time T2: The external power supply 2 provides an AC voltage that decreases from a peak +Vm to 0. At this time, D1 -3 and D2 -2 conducts according to the element characteristics, and the current flows through C2 by the time the period T2 ends. -1 From C1 -3 and C1 -2 From C2 -2 C1 -1 , C2 -1 , C1 -3 , C1 -2 and C2 -2 In other words, during the period T2, when the multi-stage boost device 10 reduces the voltage difference between the two input terminals connected to the external power source 2, the external power source 2, C1 -1 , C2 -1 , D1 -3 and C1 -3 One positive cycle balance circuit L1 -T2 At the same time, the external power supply 2, C1 -2 , C2 -2 and D2 -2 One positive cycle balance circuit L2 -T2 Configure.

[0024] 3. Figure 3C, at cycle time T3: When the external power supply 2 provides an AC voltage that decreases from 0 to a peak of −Vm to generate a voltage difference between both input terminals of the multi-stage boost device 10, D1 -1 and D2 -2is conductive according to the element characteristics, and the external power supply 2, C1 -1 and D1 -1 One negative cycle charging circuit L1 -T3 At the same time, the external power source 2, C1 -2 , D2 -2 and C2 -2 One negative cycle charging circuit L2 -T3 This allows the current to flow through C1 -1 , C1 -2 and C2 -2 and energy flows into C1 -1 The energy is stored so that it reaches a peak value at C1 -2 and C2 -2 It is used to accumulate the signal so that it reaches a half-peak value at 1000 kJ / s.

[0025] 4. Figure 3D, at cycle time T4: The external power supply 2 provides an AC voltage that increases from a peak of −Vm to 0. At this time, D1 -3 and D1 -4 conducts according to the element characteristics, and the current flows through C1 by the time the period T4 ends. -1 From C1 -3 and C2 -2 From C1 -4 C1 -1 , C1 -3 , C1 -2 , C2 -2 and C1 -4 In other words, during the period T4, when the multi-stage boost device 10 reduces the voltage difference between the input terminals, the external power supplies 2 and C1 -1 , C1 -3 , D1 -3 One negative cycle balance circuit L1 -T4 At the same time, the external power supply 2, C1 -2 , C2 -2 , D1 -4 and C1 -4 One negative cycle balance circuit L2 -T4 Configure.

[0026] As can be seen from this, as the cycle times T1 to T4 pass, the first and second energy storage elements 1001 and 1003 in each of the basic voltage doublers 100 accumulate energy in sequence until they reach a stable state. In this way, by using the AC sine wave input from the external power source 2, repeated charging operations are performed for the cycle times T1 to T4 until the stable state is reached, and the capacitor voltages of the first energy storage elements 1001 and the second energy storage elements 1003 reach the balanced electrical energy, and C2 -3 , C2 -1 , C2 -2 and C2 -4 When the voltage Vm is doubled, the output voltage from the multi-stage boost device 10 is the voltage across the series connection of the plurality of second energy storage elements 1003, i.e., a DC voltage of 8Vm. It is worth noting that even if a higher output voltage level is required in an actual situation, the use of the plurality of basic voltage doublers 100 of the present invention can still be easily connected to the existing electrical circuit of the multi-stage boost device 10 to extend the number of basic voltage doublers 100 from one to two or more, thereby expanding the voltage output capability of the multi-stage boost device 10. Furthermore, this type of boosting means, which uses a series-connected electrical circuit structure to reach eight times the voltage, can significantly reduce the voltage stress required to withstand each energy storage element, thereby reducing the cost of constructing the entire electrical circuit and improving the stability of the electrical circuit.

[0027] Another object of the present invention is to provide an electromagnetic stimulation device 1 for use in the home or similar field, which is fabricated by assembling the multi-stage voltage boosting device 10. As shown in Fig. 5, the electromagnetic stimulation device 1 includes the multi-stage voltage boosting device 10 and a stimulation unit 11. The stimulation unit 11 is wound with a copper or aluminum wire coil and is electrically connected to the multi-stage voltage boosting device 10 to obtain the DC voltage output from the multi-stage voltage boosting device 10 and generate operating electrical energy. It is worth noting that the electromagnetic stimulation device 1 is used to enhance the output of the voltage across the multi-stage booster 10, thereby achieving better performance. The inductance of the stimulation unit 11 as a magnetic field output terminal is set to at least 1 microhenry (μH), and a magnetic field exceeding 0.5 tesla (T) is generated on the surface of the stimulation unit 11 at least once, or a magnetic field exceeding 0.1 tesla (T) for a duration of less than 1 millisecond (ms) is generated on the surface of the stimulation unit 11 three or more times consecutively, thereby improving the adaptability and health management of the human body. Specifically, the stimulation unit 11 may be fully charged by an energy storage device connected to its front end and then released, thereby achieving a very large current change and creating a standard corresponding to the stimulation magnetic field described above.

[0028] In summary, the present invention utilizes the electronic properties and arrangement of elements such as diodes or switches and capacitors or inductors to boost the low voltage input from the external power source, thereby converting it into a high-voltage DC power source that can sufficiently supply effective action potentials to the stimulation unit. That is, by designing the arrangement of assembly components, the present invention enables each of the first and second current direction limiting elements to be conductive or non-conductive according to the input voltage polarity, thereby switching the energy storage cycle time of each of the first and second energy storage elements, so that when each of the second energy storage elements reaches a steady-state charge, the voltage across it is expressed as a DC voltage twice the input peak voltage. Furthermore, a plurality of the second energy storage elements are connected in series, and the voltages across them are superimposed and used for output application. As a result, the multi-stage boosting device realizes the function of boosting voltage to multiple levels, and is used to ensure that the stimulation unit outputs sufficient biological stimulation intensity, replacing a traditional linear transformer and achieving the effects of improving the volume and weight of the entire device. Furthermore, the voltage superposition structure between the two ends of the multiple second energy storage elements reduces the voltage stress required to be withstood by each individual energy storage element, reducing the component costs of the electrical circuit and improving the stability of the electrical circuit.As a result, the present invention breaks through existing technical conventions by selecting only commonly found elements such as diodes or switches and capacitors or inductors as current direction limiting elements and energy storage elements, and after achieving a special electrical connection and matching relationship, it is possible to meet the requirements of a medical-grade electromagnetic stimulation device.At the same time, the selection and use of the multiple elements simultaneously achieves small volume, light weight, and fast charge and discharge speed, allowing for better working frequency to be maintained and the overall weight of the electromagnetic stimulation device to be reduced, among other effects. [Explanation of symbols]

[0029] 1 Electromagnetic stimulation device 10 Multi-stage booster 100 Basic voltage doubler 1000 First current direction limiting element 1001 First energy storage element 1002 Second current direction limiting element 1003 Second energy storage element 1 stimulation unit 2 External power supply

Claims

1. A multi-stage booster device for an electromagnetic stimulation device, electrically connected to an external power source having a periodic polarity change, for boosting output applications, comprising: The multi-stage voltage boost device is formed by connecting a plurality of basic voltage doublers, each of which has a first current direction limiting element, a first energy storage element, a second current direction limiting element, and a second energy storage element. The external power source is electrically connected to the plurality of basic voltage doublers, and the first current direction limiting element and the first energy storage element of each of the basic voltage doublers are electrically connected in series with the external power source. The first current direction limiting element is connected in parallel with the second current direction limiting element having a current limiting direction opposite to that of the first current direction limiting element, and the second current direction limiting element is connected in series with the second energy storage element to separate the second energy storage element from the first current direction limiting element and the second current direction limiting element. the first current direction limiting element and the second current direction limiting element of each of the basic voltage doublers are conductive or non-conductive according to the input voltage polarity, and switch the current direction to charge the first energy storage element and the second energy storage element, respectively, in different cycles according to the external power source; during the charging process of the second energy storage element, charge is provided from the external power source to the first energy storage element, causing the voltage across the second energy storage element to be twice that of the first energy storage element; and the second energy storage elements of the plurality of basic voltage doublers are connected in series with each other and used for output applications.

2. 2. The multi-stage boost device according to claim 1, wherein the first energy storage element and the second energy storage element are any one of a capacitor, an inductor, and a battery, or a combination thereof.

3. 2. The multi-stage boost device according to claim 1, wherein the first current direction limiting element and the second current direction limiting element are either one of a diode and a switch, or a combination thereof.

4. 2. The multi-stage boost device according to claim 1, wherein the voltage across the second energy storage elements after they are connected in series to each other is a DC voltage exceeding 700 volts (V).

5. An electromagnetic stimulation device comprising: the multistage booster device according to claim 1; and a stimulation unit electrically connected to the multistage booster device.

6. 6. The electromagnetic stimulation device according to claim 5, wherein the inductance value of the stimulation unit as a magnetic field output end is at least 1 microhenry (μH).

7. 6. The electromagnetic stimulation device according to claim 5, wherein the stimulation unit is wound with a copper wire coil or an aluminum wire coil.

8. 6. The electromagnetic stimulation device according to claim 5, wherein the stimulation unit generates a magnetic field exceeding 0.5 Tesla (T) on the surface thereof at least once or more.

9. 6. The electromagnetic stimulation device according to claim 5, wherein a magnetic field exceeding 0.1 Tesla (T) and lasting less than 1 millisecond (ms) is generated three or more times consecutively on the surface of the stimulation unit.

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