magnetic therapy device

Abstract

To provide a magnetic treatment device that satisfies an EMI standard while demonstrating sufficient treatment effects by enhancing output of a first signal wave.SOLUTION: A magnetic treatment device for treating pain in an affected part by generating a signal wave for living body stimulation, radiating a magnetic field for affected part stimulation generated in a coil by the signal wave for living body stimulation onto the affected part of a living body, and stimulating cells and nerves of the affected part and the periphery of the affected part includes: a device body having a signal wave output part for generating a first signal wave for living body stimulation and outputting it; and a probe formed separately from the device body, including a first coil connected to the signal wave output part by a signal cable, to which the first signal wave output from the signal wave output part is supplied. The signal wave output part outputs the first signal wave as a differential signal, and supplies it to the first coil through two insulation wires in the signal cable.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] This invention relates to a magnetic therapy device that generates signal waves for biostimulation, generates a magnetic field in a coil using the signal waves, and irradiates the affected area of ​​the living body with the magnetic field to stimulate the cells in the affected area, thereby relieving pain in the affected area and mood disorders. [Background technology]

[0002] A device that treats pain in an affected area by irradiating a magnetic field onto the affected area of ​​a living body and stimulating the cells in the affected area is known, for example, as described in Patent Document 1.This magnetic therapy device is configured to be portable by storing a high-frequency coil and a low-frequency coil, each in a spiral or loop shape, together with a transmitting circuit and a battery, in a housing.

[0003] This magnetic therapy device generates magnetic fields in the high-frequency and low-frequency coils using high-frequency and low-frequency signals of constant frequency output from the transmitting circuit, and by placing the casing over the affected area of ​​the body, the magnetic field is irradiated onto the affected area, stimulating the cells in the affected area.This stimulation promotes the production of neurotrophic factors within the cells in the affected area, promoting the repair, growth, differentiation, and proliferation of the cells and treating the pain in the affected area. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] International Publication No. 2008 / 056414 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the above-mentioned conventional magnetic therapy devices, the magnetic field is irradiated to the affected area by lifting the housing containing the coil and applying it to the affected area of ​​the living body, so if the housing is large, it becomes difficult to handle, and if the housing is small, the battery capacity is limited, which limits the output strength of the magnetic field and the operating time. For this reason, it has been considered to separate the coil from the housing, connect it to the transmitting circuit inside the housing with a signal cable, and apply only the coil to the affected area of ​​the living body.

[0006] On the other hand, in magnetic therapy devices that generate signal waves as described above, the level of harmonic noise in the signal waves must be reduced to prevent malfunctions or other effects on other devices and equipment, as required by international standards such as EN55011 (Industrial, scientific and medical equipment - Radio frequency disturbance characteristics - Limits and methods of measurement).

[0007] However, in conventional magnetic therapy devices, when signal waves are sent from the transmitting circuit inside the housing via a signal cable to a coil separated from the housing, as is the case with conventional devices, one of the two insulated wires in the signal cable connected to both ends of the coil is used as a ground (GND) wire shared with other circuits, and the other is used as a signal wire, and if the signal wave is supplied via this single-ended signal wire, the current levels flowing through the signal wire and the ground wire are different, so harmonic noise of the signal wave is emitted from the signal wire, and if the output of the signal wave is increased, the level of harmonic noise also increases, making it difficult to achieve sufficient therapeutic effect while meeting EMI standards.

[0008] Furthermore, when attempting to make a conventional magnetic therapy device battery-powered and portable, the small battery that can be stored inside the device body outputs a low DC voltage, and if this low DC voltage is boosted to a high DC voltage to increase the signal wave output and achieve sufficient therapeutic effect, it is necessary to boost the voltage using an inefficient DC-DC converter, which results in the rapid consumption of power in the battery and shortens the operating time of the magnetic therapy device.

[0009] Therefore, the object of this invention is to provide a magnetic therapy device that satisfies EMI standards while achieving sufficient therapeutic effects by increasing the output of biostimulation signal waves, and that can provide a sufficiently long operating time even when made into a small, battery-powered, portable device. [Means for solving the problem]

[0010] The magnetic therapy device of the present invention generates a signal wave for biostimulation, generates a magnetic field for stimulating an affected area in a coil using the signal wave for biostimulation, irradiates the affected area with the magnetic field, and stimulates cells in the affected area, thereby treating pain in the affected area. a device main body having a signal wave output unit that generates and outputs a first signal wave for biostimulation; a probe formed separately from the device body, the probe being connected to the signal wave output unit by a signal cable and having a first coil to which the first signal wave output from the signal wave output unit is supplied; Equipped with The signal wave output unit outputs the first signal wave as a differential signal and supplies it to the first coil via two insulated wires in the signal cable. [Effects of the Invention]

[0011] In the magnetic therapy device of this invention, a signal wave output unit possessed by the device main body generates and outputs a first signal wave, for example a high frequency signal wave, for biological stimulation, and a first coil possessed by a probe formed separately from the device main body is connected to the signal wave output unit by a signal cable and is supplied with the first signal wave output from the signal wave generating unit, which generates a first alternating magnetic field for stimulating the affected area.

[0012] Therefore, according to the magnetic therapy device of the present invention, by applying a probe separate from the device body to the affected area of ​​a living body, the first alternating magnetic field generated by the first coil is irradiated onto the affected area, stimulating the cells and nerves in and around the affected area, and this stimulation can be expected to activate, for example, damaged nerves in the affected area, and reduce nerve damage in the affected area through self-repair.

[0013] Furthermore, according to the magnetic therapy device of this invention, the signal wave output section of the device main body outputs the first signal wave for biostimulation as a differential signal of the same level but opposite phase, and supplies this differential signal to the first coil via the two insulated wires in the signal cable. Therefore, the currents passing through the two insulated wires are of the same level but opposite phase, and therefore the magnetic fluxes generated in those insulated wires are also of the same level but opposite phase and cancel each other out, making it possible to suppress the radiation of harmonic noise from the signal cable. This makes it possible to increase the output of the first signal wave and satisfy EMI standards while obtaining sufficient therapeutic effect.

[0014] In the magnetic therapy device of the present invention, the device main body may house a battery, and the signal wave output unit of the device main body may convert the first signal wave obtained from the output voltage of the battery into differential signals that are symmetrical with respect to a predetermined voltage level and output them. In this way, the output of the first signal wave supplied to the first coil can be doubled without using an inefficient DC-DC converter to boost the voltage, so that even in a battery-powered portable magnetic therapy device, a sufficiently long operating time can be obtained while still obtaining a sufficient therapeutic effect.

[0015] In addition, in the magnetic therapy device of the present invention, the frequency of the first signal wave may be in the range of 100 MHz to 400 MHz, preferably in the range of 250 MHz ± 20%, more preferably in the range of 250 MHz ± 10%. In this way, the first alternating magnetic field with a frequency in the range of 100 MHz to 400 MHz has a stronger effect of activating damaged nerves and promoting self-repair than frequencies outside this range, and is therefore expected to have an improved effect of alleviating nerve damage in the affected area.

[0016] In the magnetic therapy device of the present invention, the signal wave output unit of the device main body may also generate and output a second signal wave for biostimulation, and the probe may also have a second coil connected to the signal wave output unit by a signal cable and supplied with the second signal wave output from the signal wave output unit. In this way, the stimulation given by irradiating the affected area with a second alternating magnetic field for stimulating the affected area, which is generated in the second coil by a second signal wave for biostimulation, for example, a low frequency, travels through sensory nerves (Aβ fibers: touch) and reaches the brain (sensory area) from the dorsal horn of the spinal cord, so that the brain recognizes the pleasantness of the touch and activates the descending pain inhibitory system, thereby bringing about an analgesic effect and a relaxing effect. [Brief explanation of the drawings]

[0017] [Figure 1] 1 is a perspective view showing the overall appearance of a magnetic therapy device according to an embodiment of the present invention. [Figure 2] FIG. 2 is a front view showing the appearance of the main body of the magnetic therapy device according to the embodiment. [Figure 3] FIG. 2 is a side view showing the appearance of the main body of the magnetic therapy device according to the embodiment. [Figure 4] FIG. 4 is a cross-sectional view showing the cross section AA in FIG. 3 of the magnetic therapy device of the embodiment. [Figure 5] FIG. 4 is a cross-sectional view showing the cross section BB in FIG. 3 of the magnetic therapy device of the embodiment. [Figure 6] FIG. 2 is a block diagram showing the configuration of the magnetic therapy device of the embodiment in functional blocks. [Figure 7] 10 is an explanatory diagram showing, as an example, a case where a signal wave output section of the device body of the magnetic therapy device of the above embodiment outputs a high-frequency signal for biostimulation as a differential signal. FIG. [Figure 8] FIG. 10 is an explanatory diagram showing, as a comparative example, a case where the signal wave output section of the device body of the magnetic therapy device of the embodiment outputs a high-frequency signal for biostimulation in a single-ended manner. DETAILED DESCRIPTION OF THE INVENTION

[0018] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. Figure 1 is a perspective view showing the overall appearance of a magnetic therapy device according to one embodiment of the present invention, Figures 2 and 3 are a front view and a side view showing the appearance of the device main body of the magnetic therapy device according to the embodiment, and Figures 4 and 5 are cross-sectional views showing the AA and BB cross sections, respectively, of the magnetic therapy device according to the embodiment in Figure 3.

[0019] As shown in Figure 1, the magnetic therapy device of this embodiment comprises a device main body 1, a probe 2, a signal cable 3 connecting the probe 2 to the device main body 1, and a power cable (not shown) that is detachably inserted into the device main body 1. As shown in Figures 2 to 5, the device main body 1 mainly comprises a resin casing 4, a touch input display 5 that is housed diagonally upward within the casing 4 and exposed from an opening 4a on the front of the casing 4, two printed circuit boards 6, 7 that are housed diagonally downward behind the display 5 within the casing 4 and lined up on the left and right when viewed from the rear of the device main body, two AC-DC converters 8, 9 that are housed horizontally within a protrusion 4b on the lower rear of the casing 4 and lined up on the left and right when viewed from the rear of the device main body, and a battery 10 housed below the AC-DC converters 8, 9 within the protrusion 4b on the lower rear of the casing 4.

[0020] An alarm stop button and a power switch button are provided on the left and right sides below the opening 4a on the front of the casing 4 of the device main body 1, and further below these buttons there are three sockets for plugging in the signal cable 3, arranged side by side to enable the connection of three probes 2 to the device main body 1.

[0021] Figure 6 is a block diagram showing the configuration of the magnetic therapy device of this embodiment in functional blocks. As shown in this figure, the magnetic therapy device of this embodiment comprises a device main body 1, a probe 2, and a signal cable 3. Functionally, the device main body 1 has a signal wave output section 13, a screen control section 14, and a power supply section 15. The signal wave output section 13 in this embodiment is mainly configured on the left-side printed circuit board 6 using multiple central processing units (CPUs) not shown. The fundamental high-frequency signal generating section 13a generates a fundamental high-frequency signal of 250 MHz as a fundamental signal wave, and the fundamental high-frequency signal shifting section 13b appropriately shifts (varies) the fundamental high-frequency signal within a range of 225 MHz to 275 MHz, which is, for example, ±10% of the center frequency of 250 MHz, while excluding the frequency band used in aircraft emergency transmitters, for example, every 0.00014 seconds (i.e., approximately 7000 times per second), and outputs the shifted fundamental high-frequency signal as a first signal wave to the fundamental high-frequency signal frequency modulation section 13c.

[0022] Here, the fundamental high-frequency signal generating unit 13a is configured using, for example, a digital direct synthesis oscillator (DDS: Direct Digital Synthesizer) and can oscillate a fundamental signal of any frequency within the range of, for example, 200 MHz to 300 MHz, including the range of 225 MHz to 275 MHz mentioned above, and the fundamental high-frequency signal shifting unit 13b uses, for example, random numbers to set the shifted frequency so that the frequency distribution becomes uniform.

[0023] The signal wave output unit 13 also reads out a magnetic signal pattern including a sound source signal such as music, which has been pre-recorded on an SD card (not shown) inserted into a card slot on the left-side printed wiring board 6, from the SD card using the magnetic signal pattern reading unit 13d, and supplies the readout to the biostimulation low-frequency signal generating unit 13e, which generates a biostimulation low-frequency signal as a second signal wave from the frequency information of the magnetic signal pattern (for example, 1 kHz or more and 3 kHz or less), and outputs the biostimulation low-frequency signal to the fundamental high-frequency signal frequency modulation unit 13c.

[0024] The fundamental high-frequency signal frequency modulation unit 13c then frequency-modulates the fundamental high-frequency signal, e.g., 250 MHz ± 10%, generated by the fundamental high-frequency signal generation unit 13a and frequency-shifted by the fundamental high-frequency signal shift unit 13b, with a biostimulation low-frequency signal, e.g., 1 kHz or more and 3 kHz or less, generated by the biostimulation low-frequency signal generation unit 13e as a second signal wave, and supplies the resulting signal to the biostimulation high-frequency signal output unit 13f. The biostimulation high-frequency signal output unit 13f then amplifies the frequency-modulated biostimulation high-frequency signal, e.g., a first signal wave, using a conventional differential output circuit and outputs the same-level, opposite-phase differential signals. Note that the biostimulation high-frequency signal output unit 13f may also amplitude-modulate the frequency-modulated biostimulation high-frequency signal with the biostimulation low-frequency signal, then amplify and output the differential signals. The biostimulation low-frequency signal output unit 13g amplifies and outputs the biostimulation low-frequency signal, e.g., 1 kHz or more and 3 kHz or less, generated by the biostimulation low-frequency signal generation unit 13e. These operations in the signal wave output unit 13 are controlled by the operation state control unit 13h.

[0025] In this embodiment, probe 2 houses a flexible printed wiring board (not shown) inside a soft resin cover, and a high-frequency coil 2a is formed on the flexible printed wiring board using printed wiring, with a low-frequency coil 2b formed inside it, and a magnetic detection coil is also formed outside high-frequency coil 2a. An operating status detection unit 2c is also configured as a circuit using a temperature detection element and a CPU mounted on the flexible printed wiring board, and high-frequency coil 2a generates a high-frequency alternating magnetic field for stimulating the affected area as a first alternating magnetic field using a high-frequency signal for biostimulation supplied as a differential signal from biostimulation high-frequency signal output unit 13f via two insulated wires in signal cable 3, and low-frequency coil 2b generates a low-frequency alternating magnetic field for stimulating the affected area as a second alternating magnetic field using a low-frequency signal for biostimulation supplied from biostimulation low-frequency signal output unit 13g via a ground (GND) wire and other insulated wires in signal cable 3.

[0026] Then, based on an instruction signal provided from an operating state control unit 13h of the signal wave output unit 13 via the ground (GND) wire and other insulated wires in the signal cable 3, the operating state detection unit 2c detects the operating state of the signal wave output unit 13 and the state of the probe 2 from the temperatures of the high-frequency coil 2a and the low-frequency coil 2b detected by the temperature detection element and the high-frequency or low-frequency magnetic intensity detected by the magnetic detection coil, and inputs a signal indicating the state to the operating state control unit 13h of the signal wave output unit 13 via the ground (GND) wire and other insulated wires in the signal cable 3. Note that instead of or in addition to the ground (GND) wire in the signal cable 3, a mesh shield surrounding all the insulated wires in the signal cable 3 may be used as the ground.

[0027] Using this status-indicating signal, operating state control unit 13h monitors the operation of signal wave output unit 13, such as signal wave generation and output, and thereby the levels of the alternating magnetic fields generated by high-frequency coil 2a and low-frequency coil 2b, and if an abnormality is detected, it outputs an alarm sound, for example, from a speaker (not shown) built into device main body 1. Note that the output of this alarm sound is stopped when the abnormality is resolved or by operating the alarm stop button on the front of casing 4 of device main body 1. Furthermore, upon detecting an abnormality, operating state control unit 13h immediately stops the supply of biostimulation high-frequency signals from high-frequency signal output unit 13f to high-frequency coil 2a and the supply of biostimulation low-frequency signals from biostimulation low-frequency signal output unit 13g to low-frequency coil 2b, to ensure the safety of the user of the magnetic therapy device.

[0028] In this embodiment, the screen control unit 14 is mainly configured as a circuit using a graphics processing unit (GPU) (not shown) on the right-side printed wiring board 7. The image display unit 14a reads screen information, such as instruction buttons to be displayed on the liquid crystal display (LCD) 5a of the touch input display 5, from an SD card (not shown) pre-stored in a card slot on the right-side printed wiring board 7 and displays it on the LCD 5a. The instruction input unit 14b detects the position where the user's finger touches the touch panel 5b of the touch input display 5 from changes in static electricity at that position and sends a signal indicating an instruction input via the operation button displayed on the LCD 5a corresponding to the touch position to the operating state control unit 13h. Based on this instruction input signal, the operating state control unit 13h controls the signal wave generation and output operations of the signal wave output unit 13, and ultimately the alternating magnetic fields generated by the high-frequency coil 2a and the low-frequency coil 2b, in accordance with the user's instructions.

[0029] The screen control unit 14 also creates a log that records the instructions input to the instruction input unit 14b using the operation buttons displayed on the LCD 5a and the operating state of the signal wave output unit 13 at that time, and saves the log information in a USB memory (not shown) that is inserted and removed from the top side of the protrusion 4b in a USB memory slot 11 that is located between the AC-DC converters 8 and 9 in the protrusion 4b on the lower rear of the casing 4 and covered with an openable and closable lid.Furthermore, the image display unit 14a has a clock function that displays a clock on the LCD 5a, and this clock function is maintained by a button battery (not shown) that is attached to a battery holder on the right-side printed wiring board 7.

[0030] In this embodiment, the power supply unit 15 is mainly configured as a circuit using a CPU (not shown) mounted on the left-side printed wiring board 7, a power supply control unit 15a having a normal switching regulator and a three-terminal regulator, and two AC-DC converters 8 and 9 inside the protruding portion 4b on the lower rear of the casing 4. The power supply control unit 15a supplies 100V commercial AC power from a power cable (not shown) that is detachably inserted into a power socket 12 arranged facing backward on the protruding portion 4b on the lower rear of the casing 4 to the two AC-DC converters 8 and 9. The 100V AC is converted into stabilized DC of a predetermined voltage by switching control of the AC-DC converters 8 and 9. These DC voltages are connected in series to obtain a DC voltage corresponding to the output voltage of the battery 10, with which the battery 10 is charged. The DC voltage is also stepped down and stabilized by the power supply control unit 15a and supplied to the signal wave output unit 13 and screen control unit 14 of the device main body 1 and the operating state detection unit 2c of the probe 2 as DC power of the required voltage, respectively.

[0031] In addition, when the power cable is not attached or when 100V commercial AC power is not being supplied from the power cable, the power supply unit 15 reduces and stabilizes the DC voltage from the battery 10 using the switching regulator and three-terminal regulator of the power supply control unit 15a, and supplies it as a DC power source of the required voltage to the signal wave output unit 13 and screen control unit 14 of the device main body 1 and the operating status detection unit 2c of the probe 2, making the magnetic therapy device portable and usable.

[0032] In this embodiment of the magnetic therapy device, the fundamental high-frequency signal generating section 13a, fundamental high-frequency signal shifting section 13b and fundamental high-frequency signal frequency modulating section 13c of the signal wave output section 13 of the device main body 1 generate a high-frequency signal for biostimulation, which is output by the high-frequency signal output section 13f for biostimulation, the high-frequency coil 2a of the probe 2 formed separately from the device main body 1 is connected to the high-frequency signal output section 13f for biostimulation of the signal wave output section 13 by a signal cable 3, and is supplied with a high-frequency signal for biostimulation within the range of, for example, 250 MHz ± 10% output from the high-frequency signal output section 13f for biostimulation, and the high-frequency signal for biostimulation generates a high-frequency alternating magnetic field for stimulating the affected area.

[0033] Therefore, according to the magnetic therapy device of this embodiment, by applying a probe 2 separate from the device main body 1 to the affected area of ​​a living body, the high-frequency alternating magnetic field generated by the high-frequency coil 2a is irradiated onto the affected area, stimulating the cells and nerves in and around the affected area. This stimulation is expected to activate, for example, damaged nerves in the affected area, and reduce nerve damage in the affected area through self-repair. The central 250 MHz high-frequency alternating magnetic field has a strong effect of activating damaged nerves and causing them to self-repair, so it is expected to enhance the effect of reducing nerve damage in the affected area.

[0034] Furthermore, according to this embodiment of the magnetic therapy device, the fundamental high-frequency signal shift section 13b of the signal wave output section 13 of the device main body 1 varies the frequency of the high-frequency signal for biostimulation within a range of, for example, 250 MHz ± 10%, so that the QP (quasi-peak) value of the harmonic noise is lower than when the frequency of the high-frequency signal for biostimulation is constant, and a high-intensity high-frequency signal for biostimulation within the EMI standard can be supplied to the high-frequency coil 2a, thereby generating a high-intensity high-frequency alternating magnetic field for stimulating the affected area.

[0035] Furthermore, according to the magnetic therapy device of this embodiment, the biostimulation high-frequency signal output section 13f of the signal wave output section 13 of the device main body 1 outputs the biostimulation high-frequency signal as a differential signal of the same level but opposite phase, and supplies this differential signal to the high-frequency coil 2a via two insulated wires in the signal cable 3. Therefore, the currents flowing between the biostimulation high-frequency signal output section 13f and the high-frequency coil 2a through these insulated wires are of the same level but opposite phase, and the magnetic fluxes generated in these insulated wires are also of the same level but opposite phase, canceling each other out. This makes it possible to suppress the radiation of harmonic noise from the signal cable 3. From this point of view, it is possible to increase the output of the high-frequency signal to obtain a sufficient therapeutic effect while satisfying EMI standards.

[0036] Furthermore, according to this embodiment of the magnetic therapy device, the device main body 1 houses the battery 10, and the biostimulation high-frequency signal output section 13f of the signal wave output section 13 of the device main body 1 outputs the high-frequency signal obtained from the output voltage of the battery 10 as a differential signal that is symmetrical with respect to a predetermined voltage level.Therefore, the output of the high-frequency signal supplied to the high-frequency coil 2a can be doubled without having to boost the voltage using an inefficient DC-DC converter, and therefore even if the device is made into a battery-powered portable type, it can obtain a sufficiently long operating time while still achieving a sufficient therapeutic effect.

[0037] Figure 7 is an explanatory diagram showing an example in which the biostimulation high-frequency signal output section 13f of the signal wave output section 13 of the device main body 1 of the magnetic therapy device of this embodiment outputs the biostimulation high-frequency signal as a differential signal, and Figure 8 is an explanatory diagram showing an example in which the biostimulation high-frequency signal output section 13f outputs the biostimulation high-frequency signal in a single-ended manner with one signal line as an insulated wire and the other as a ground (GND) line.

[0038] As shown in Figure 7, when the biostimulation high-frequency signal output unit 13f, shown as an embodiment of the present invention, supplies biostimulation high-frequency signals to the high-frequency coil 2a as differential signals with the same level and opposite phase, the magnetic fluxes 3c and 3d generated by the currents flowing through the two insulated electric wires 3a and 3b in the signal cable 3 are at the same level and opposite phase to each other and cancel each other out, thereby suppressing the radiation of harmonic noise from the signal cable 3.

[0039] 8, when biostimulation high-frequency signal output unit 13f supplies biostimulation high-frequency signals to high-frequency coil 2a using a single-ended method with insulated wire 3a on one side and ground (GND) wire 3e on the other side, as shown in a comparative example of the present invention, ground (GND) wire 3e is also used by low-frequency coil 2b and operating state control unit 13h, and therefore magnetic flux 3c generated by the current flowing in insulated wire 3a and magnetic flux generated by the current flowing in ground wire 3e are not of the same level but opposite phase, and therefore cannot sufficiently cancel each other out, making it impossible to suppress harmonic noise radiation from signal cable 3. This clearly shows the advantage of supplying biostimulation high-frequency signals to high-frequency coil 2a as differential signals with the same level but opposite phase.

[0040] Furthermore, according to the magnetic therapy device of this embodiment, the biostimulation low-frequency signal generating unit 13e of the signal wave output unit 13 of the device main body 1 generates a biostimulation low-frequency signal from the frequency information of the magnetic signal pattern (for example, 1 kHz or more and 3 kHz or less), and the biostimulation low-frequency signal output unit 13g outputs the biostimulation low-frequency signal, and the low-frequency coil 2b of the probe 2 is connected to the biostimulation low-frequency signal output unit 13g of the signal wave output unit 13 by the signal cable 3 and is supplied with a biostimulation low-frequency signal from the biostimulation low-frequency signal output unit 13g.The low-frequency alternating magnetic field for stimulating the affected area, generated by the biostimulation low-frequency signal, is irradiated onto the affected area, and the stimulation provided by this biostimulation low-frequency signal travels along the sensory nerves (Aβ fibers: touch) and reaches the brain (sensory area) from the posterior horn of the spinal cord.As a result, the brain recognizes the pleasantness of the touch, activating the descending pain inhibitory system and bringing about an analgesic effect and a relaxing effect.

[0041] Furthermore, according to the magnetic therapy device of this embodiment, the fundamental high-frequency signal modulation section 13c of the signal wave output section 13 of the device main body 1 frequency-modulates the fundamental high-frequency signal with the low-frequency signal for biostimulation generated by the signal wave output section 13 to generate a high-frequency signal for biostimulation, and the high-frequency signal output section 13f supplies the frequency-modulated high-frequency signal for biostimulation to the high-frequency coil 2a of the probe 2.Therefore, by stimulating the cells and nerves in and around the affected area with the high-frequency alternating magnetic field for stimulating the affected area generated by the high-frequency coil 2a using the high-frequency signal for biostimulation that has been frequency-modulated with the low-frequency signal for biostimulation, it is expected that the damaged nerves in the affected area will be more activated than in the absence of frequency modulation, and that self-repair will further alleviate nerve damage in the affected area.

[0042] Furthermore, according to the magnetic therapy device of this embodiment, the signal wave output unit 13 of the device main body 1 also generates and outputs a low-frequency signal for biostimulation, the probe 2 is connected to the signal wave output unit 13 by a signal cable 3, and also has a low-frequency coil 2b to which the low-frequency signal for biostimulation is supplied from the signal wave output unit 13, and the signal wave output unit 13 frequency-modulates the fundamental high-frequency signal with the low-frequency signal for biostimulation to generate a high-frequency signal for biostimulation, and outputs this separately from the low-frequency signal for biostimulation.Therefore, it is expected that the low-frequency alternating magnetic field for stimulating the affected area generated in the low-frequency coil 2b by the low-frequency signal for biostimulation will have an analgesic effect and a relaxing effect, and that the high-frequency alternating magnetic field for stimulating the affected area generated in the high-frequency coil 2a by the high-frequency signal for biostimulation, which is frequency-modulated from the fundamental high-frequency signal by the low-frequency signal for biostimulation, will further alleviate nerve damage in the affected area.

[0043] Furthermore, according to the magnetic therapy device of this embodiment, the frequency of the low-frequency signal for biostimulation is 1 kHz or more and 3 kHz or less, and the stimulation by the low-frequency alternating magnetic field of 1 kHz or more and 3 kHz or less generated in the low-frequency coil 2b by the low-frequency signal for biostimulation is particularly likely to travel along the sensory nerves and reach the brain from the posterior horn of the spinal cord, so it can be expected to bring about a greater analgesic effect, a relaxing effect, and other nerve damage reduction effects.

[0044] The above explanation has been based on the illustrated embodiment, but the magnetic therapy device of the present invention is not limited to the above embodiment and can be modified as appropriate within the scope of the claims. For example, the high-frequency signal generated by the fundamental high-frequency signal generating unit 13a and frequency-shifted by the fundamental high-frequency signal shifting unit 13b does not have to be within the range of 250 MHz ± 10%, as long as it is within the range of 100 MHz or more and 400 MHz or less.

[0045] Furthermore, for example, the biostimulation low-frequency signal generating section 13e may generate a biostimulation low-frequency signal in a frequency range different from 1 kHz or more and 3 kHz or less, for example, in a frequency range of 200 Hz or more and 3 kHz or less with a center frequency of 1.6 kHz.

[0046] The magnetic therapy device of the present invention may be a stationary type that does not house the battery 10 within the device main body 1 and is powered by a commercial 100V AC power source. [Industrial Applicability]

[0047] Thus, according to the magnetic therapy device of this invention, the signal wave output unit of the device main body generates and outputs a first signal wave for biological stimulation, and the first coil of the probe formed separately from the device main body is connected to the signal wave output unit by a signal cable and is supplied with the first signal wave output from the signal wave generating unit, which generates a first alternating magnetic field for stimulating the affected area.Therefore, by applying the probe separate from the device main body to the affected area of ​​a living body, the first alternating magnetic field generated by the first coil is irradiated onto the affected area, stimulating the cells and nerves in and around the affected area, and this stimulation can be expected to activate, for example, damaged nerves in the affected area, and by self-repair, alleviate nerve damage in the affected area.

[0048] Furthermore, according to the magnetic therapy device of this invention, the signal wave output section of the device main body outputs the first signal wave for biostimulation as a differential signal of the same level but opposite phase, and supplies this differential signal to the first coil via the two insulated wires in the signal cable. Therefore, the currents passing through the two insulated wires are of the same level but opposite phase, and therefore the magnetic fluxes generated in those insulated wires are also of the same level but opposite phase and cancel each other out, making it possible to suppress the radiation of harmonic noise from the signal cable. This makes it possible to increase the output of the first signal wave and satisfy EMI standards while obtaining sufficient therapeutic effect. [Explanation of symbols]

[0049] 1. Device body 2 probes 2a High frequency coil 2b Low frequency coil 2c Operation status detection section 3 signal cables 3a,3b Insulated wire 3c,3d magnetic flux 3e ground wire 4 Casing 4a opening 4b Protrusion 5. Display 5a LCD 5b Touch Panel 6,7 Printed wiring board 8,9 AC-DC converter 10 Battery 11 USB memory slot 12 power sockets 13 Signal wave output section 13a Fundamental high frequency signal generator 13b Fundamental high frequency signal shift section 13c Fundamental high frequency signal frequency modulation section 13d Magnetic signal pattern readout section 13e Low-frequency signal generator for biostimulation 13f High frequency signal output unit for biostimulation 13g Low-frequency signal output unit for biostimulation 13h Operation status control section 14 Screen control section 14a Image display section 14b Instruction input section 15 Power supply section 15a Power supply control unit

Claims

1. A magnetic therapy device that generates a signal wave for biostimulation, generates a magnetic field for stimulating an affected area in a coil using the signal wave for biostimulation, irradiates the affected area with the magnetic field, and stimulates cells in the affected area to treat pain in the affected area, a device main body having a signal wave output unit that generates and outputs a first signal wave for biostimulation; a probe formed separately from the device body, the probe being connected to the signal wave output unit by a signal cable and having a first coil to which the first signal wave output from the signal wave output unit is supplied; the signal wave output unit outputs the first signal wave as a differential signal and supplies the first signal wave to the first coil via two insulated wires in the signal cable; A magnetic therapy device characterized in that the frequency of the first signal wave is in the range of 100 MHz or more and 400 MHz or less.

2. A magnetic therapy device that generates a signal wave for biostimulation, generates a magnetic field for stimulating the affected area in a coil using the signal wave for biostimulation, irradiates the affected area with the magnetic field, and stimulates cells in the affected area to treat pain in the affected area, a device main body having a signal wave output unit that generates and outputs a first signal wave for biostimulation; a probe formed separately from the device body, the probe being connected to the signal wave output unit by a signal cable and having a first coil to which the first signal wave output from the signal wave output unit is supplied; the signal wave output unit outputs the first signal wave as a differential signal and supplies the first signal wave to the first coil via two insulated wires in the signal cable; the signal wave output unit of the device body also generates and outputs a second signal wave for biostimulation; A magnetic therapy device characterized in that the probe also has a second coil connected to the signal wave output unit by a signal cable and supplied with the second signal wave output from the signal wave output unit.

3. The device body accommodates a battery, The magnetic therapy device according to claim 1 or 2, characterized in that the signal wave output unit of the device main body outputs the first signal wave obtained by the output voltage of the battery as a differential signal that is symmetrical with respect to a predetermined voltage level.

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