KR102007954B1 - Medical Device Capable of RET High Frequency Treatment and CET High Frequency Treatment - Google Patents

Abstract

An electrotherapy device with RET and CET radiofrequency therapy is disclosed. The high frequency electrotherapy device of the present invention can output a high frequency signal in the RET mode and the CET mode using one circuit path. The high-frequency electrotherapy apparatus of the present invention corresponds to the voltage and frequency according to the RET and CET schemes, and solves the problem of mutual interference according to the combined circuit while implementing outputs of different currents and voltage intensities through a single current path.

Description

Medical Device Capable of RET High Frequency Treatment and CET High Frequency Treatment}

The present invention relates to a high frequency electrotherapy device, and relates to a high frequency electrotherapy device of a combined RET method and CET method.

High frequency electric therapy device (hereinafter referred to as 'high frequency therapy device') is divided into CET (Capacity Electric Transfer) using capacitive current conduction and RET (Resistive Electric Transfer) using resistive current conduction according to the current conduction method. .

CET is a method of contacting the body with an insulating coated electrode (electrode), which is an anode, and a plate (plate), which is a ground, and is applied to most high frequency electrotherapy devices. Active electronic activity around the skin in contact with the skin causes deep fever, which is effective for the management of the dermis and subcutaneous fat close to the skin tissue. The CET method is not a method of fixing the ceramics to a specific area, but rubbing a part of the skin as if it is massaged, and it is known to be effective for skin care to improve wrinkles and stretch marks, and also to have the effect of fat decomposition due to deep fever. The CET method is safer than the RET described below, even though the output is high in that the ceramic is insulated coated.

RET causes deep heat from the human central tissue due to electronic activity between two non-insulated conductor electrodes and a grounded conduction plate. RET uses relatively high frequencies and uses non-isolated ceramics, so it can deliver deep heat to the deep subcutaneous fat layer at a specific site instead of relatively localized areas, which is good for abdominal obesity. Local tissues inside the body can also be treated. However, the use is limited compared to the CET method.

The RET method has the advantage of accelerating electronic activity from the central tissue because it uses two non-isolated ceramic electrodes, but because of its high power at high frequencies, additional configurations are needed and relatively inexpensive to address safety issues. expensive. For this reason, CET is generally used as a versatile general purpose but RET is used for the treatment of specific areas such as abdominal obesity.

Conventional CET therapy equipment and RET therapy equipment have different frequencies and different outputs, so dual products were not produced in consideration of high frequency noise problems and fever problems. Therefore, it was not a problem even if produced separately.

Nevertheless, since the CET and RET methods are different from each other, it may be necessary to use both for the purpose of radiofrequency therapy, and in such a case, it is very convenient to support both modes.

On the other hand, since the high frequency electrotherapy device uses a high frequency, interference of noise other than the high frequency used for treatment may be an important problem. Thus, the conventional CET or RET electrotherapy device is a DC power supply, which has a relatively low noise transformer. (Trans) was used and it was heavy.

[Related Advanced Technology]

Republic of Korea Registration No. 10-1557619 (High Frequency Therapeutic Apparatus)

The present invention relates to the protection of the human body by applying an output voltage to the load electrode (porcelain) only when the load electrode is in contact with the user's body, and is not an invention related to the high frequency electrotherapy device of both the CET mode and the RET mode.

An object of the present invention is to provide a high-frequency electrotherapy device of the combined RET method and CET method.

As described in the background art, the RET and CET schemes are integrated circuits due to problems such as noise interference, heat generation, input voltage limitation, and mutual interference due to the difference between the frequency of use and the intensity of the output. It was not designed as a product, but was designed individually and produced only as individual products. It is an object of the present invention to solve this problem and to implement two schemes in one circuit.

The high frequency electrotherapy apparatus according to the present invention for achieving the above object includes an operation unit, a DC power supply unit, a high frequency oscillation unit, a switching unit and a current adjusting unit.

The operation unit receives a selection for selecting one of the RET mode and the CET mode from the user to control the high frequency oscillator, the switching unit, and the current adjusting unit. The DC power supply unit converts commercial AC power into DC power and provides the high frequency oscillation unit.

The high frequency oscillator boosts the output of the DC power supply unit to the output voltage for the CET mode or the output voltage for the RET mode and oscillates the boosted voltage at a predetermined high frequency under control of the operation unit.

The switching unit switches the output of the high frequency oscillator to one of a RET mode output terminal and a CET mode output terminal. The current adjusting unit is provided between the switching unit and the RET mode output terminal and the CET mode output terminal to adjust the current output to the RET mode output terminal or the CET mode output terminal.

Preferably, a current adjuster is provided between the switching unit and the RET mode output terminal, and when the RET mode is selected, a part of the output of the second boosting unit is distributed to lower the output current to a predetermined magnitude.

According to an embodiment, the high frequency oscillator is implemented in a two-step boost structure including a first booster, a frequency setting unit, and a second booster, and thus, the CET mode output voltage and the RET mode having different magnitudes through one system. The output voltage can be adjusted. First, the first boosting unit boosts the output of the DC power supply unit to one of a plurality of first stage voltages corresponding to the RET mode output voltage or the CET mode output voltage under the control of the operation unit. The frequency setting unit divides the output of the oscillator and outputs a predetermined high frequency oscillation signal to the second boosting unit. The second boosting unit changes the output of the first boosting unit to the high frequency pulse by using the high frequency oscillation signal of the frequency setting unit, and boosts at a predetermined magnification, and finally boosts the output to the RET mode output voltage or CET mode output voltage. do.

Additionally, the second booster may be a circuit implemented with a MOSFET and a transformer. The MOSFET is switched to the high frequency oscillation signal output from the frequency setting unit and converts the output of the first boosting unit 111 into the pulse form of the high frequency to output to the primary side of the transformer. The transformer boosts the output of the MOSFET at a predetermined magnification and outputs it to the switching unit.

According to an embodiment, the current adjusting unit may be implemented as a high voltage capacitor disposed in parallel to the terminal for the RET mode.

According to another embodiment, the high frequency electrotherapy of the present invention may further include a DC power supply unit for converting the commercial AC power into a DC operating voltage of the operation unit to supply the operating power of the operation unit.

The high frequency electrotherapy device of the present invention may output a high frequency signal in a RET mode and a CET mode using a single circuit.

The high-frequency electrotherapy apparatus of the present invention corresponds to the voltage and frequency according to the RET and CET schemes, and solves the problem of mutual interference according to the combined circuit while implementing outputs of different currents and voltage intensities through a single current path.

1 is a block diagram of a high frequency electrotherapy device of the present invention,
FIG. 2 is a circuit diagram of a first boosting unit of the high frequency electrotherapy unit of FIG. 1, and
3 is a circuit diagram of a second boosting unit of the high frequency electrotherapy device of FIG. 1.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

The high frequency electrotherapy apparatus 100 according to the present invention includes a first DC power supply 101, a second DC power supply 103, an operation unit 105, a high frequency oscillator 110, a switching unit 121, a current adjuster 123, Including the RET output terminal 125 and the CET output terminal 127, it is possible to output a high frequency output signal of the RET method and a high frequency output signal of the CET method through one circuit system. The high frequency frequency used in the present invention is used as one frequency (hereinafter, referred to as an "output frequency") without distinguishing between the CET method and the RET method, and is preferably approximately 500 Hz.

The high-frequency electrotherapy apparatus 100 of the present invention separately separates a power source for the operation unit 105 driven by a microcomputer and a power source for a high-frequency output, and thus, the first DC power supply unit 101 and the second DC power supply unit 103. ), It essentially blocks the malfunction due to interference such as noise between the high frequency output system and the operation unit 105. The first DC power supply unit 101 and the second DC power supply unit 103 may use a switching mode power supply (SMPS) to significantly reduce the weight compared to conventionally used trans. The first DC power supply 101 and the second DC power supply 103 convert commercial AC power into DC power, and the first DC power supply 101 outputs a DC voltage to the high frequency oscillator, and the second DC power supply 103. Provides an operating voltage of the operation unit 105.

The operation unit 105 is provided with a plurality of input means (not shown) such as a button, a dial, etc. to receive various control commands from the user to overall control the high frequency electrotherapy device 100 of the present invention, the LED (LED), the touch pad Display means (not shown), such as, for example, to display the guidance, control results or alarm (Alarm) for the user's control. The input means (not shown) or the display means (not shown) may use various methods known in the art.

In the present invention, the operation unit 105 specifically selects (1) a selection command for selecting one of the RET mode or the CET mode from the user by using an input means (not shown) and (2) a selection for selecting the output voltage level in each mode. Receive a command.

The operation unit 105 controls the high frequency oscillation unit 110 and the switching unit 121 according to a user's selection command to process the user's control command. When the user selects the RET mode, the high frequency signal is output only to the RET output terminal 125, and when the CET mode is selected, the high frequency signal is output only to the CET output terminal 127. However, the high frequency signal output to the RET output terminal 125 and the CET output terminal 127 is output through the same circuit system. The RET output terminal 125 may be connected to a cable coupled to an insulated conductor electrode in RET mode, and the CET output terminal 127 may be connected to a cable coupled to an insulated conductor electrode in CET mode.

The high frequency oscillator 110 controls the output of the first DC power supply 101 to be the final output voltage for the CET mode (hereinafter, referred to as a 'CET mode output voltage') or the final for the RET mode under the control of the operation unit 105. The voltage is boosted to an output voltage (hereinafter referred to as a “RET mode output voltage”), the boosted output voltage is oscillated at a predetermined output frequency (high frequency), and output to the RET output terminal 125 or the CET output terminal 127.

As described above, in the present invention, the output rated voltage and rated current of the RET mode and the CET mode are different, but the output frequency is the same. The RET mode is for radiofrequency treatment of the RET method as described in the background art, and the CET mode is for radiofrequency therapy of the CET method as described in the background art. Since the RET mode uses non-insulated conductors as electrodes, the rated voltage at the RET mode output is adjusted relatively low compared to the CET mode. On the other hand, since a plurality of voltage levels can be set even in the RET mode, and a plurality of voltage levels can be set even in the CET mode, the RET mode output voltage is set to about 120V to 400V, and the CET mode output voltage is set to about 300V to 600V. Can be.

In the case of the output frequency, the RET mode may be set to a relatively high frequency relative to the CET mode, but in the present invention, the output frequency of the RET mode and the output frequency of the CET mode are set to be the same. The fundamental difference between the CET method and the RET method is that since the RET method uses a non-isolated ceramic as an electrode, it is not a problem to use a signal having the same output frequency in the RET mode and the CET mode.

<Example of High Frequency Oscillator>

In the state in which the high frequency oscillator 110 has a single circuit system, a method of boosting a CET mode output voltage or a RET mode output voltage having different magnitudes may be variously implemented. However, the present invention implements a circuit with a two-step boost structure in order to increase the stability of the overall system and to minimize the generation of noise / mutual interference by noise, etc., through a single system, in the first DC power supply unit 101 One DC input can be converted into CET mode output voltage and RET mode output voltage of different sizes.

Referring to FIG. 1, the high frequency oscillator 110 includes a first boosting unit 111, a frequency setting unit 113, and a second boosting unit 115, and includes a first boosting unit 111 and a second boosting unit. 115 implements a two step boost.

In the present invention, by implementing the voltage boosting method in the RET mode and the CET mode in the same way, a circuit that was conventionally processed separately is integrated into one. When there is a target output voltage, the first booster 111 first boosts the voltage to the 'first stage voltage' corresponding to the output voltage, and the second booster 115 multiplies the first stage voltage by a preset magnification. Step up to final output voltage. Since the magnification of the second boosting unit 115 is fixed, the voltage is boosted at the same magnification without distinguishing between the RET mode and the CET mode. Therefore, the operation unit 105 controls the first boosting unit 111 to output the first stage voltage corresponding to the final output voltage.

(1st stage voltage x 2nd boost part = magnification of output voltage)

In the case of the CET mode, the first boosting unit 111 boosts the output of the first DC power supply unit 101 to one of a plurality of 'first stage voltages' under the control of the operation unit 105, and the second boosting unit ( 115 boosts the 'first stage voltage' output from the first boosting unit 111 to a preset magnification to finally boost the CET mode output voltage. Even in the RET mode, the first booster 111 boosts the DC output of the first DC power supply 101 to one of a plurality of first stage voltages under the control of the operation unit 105, and the second booster 115. ) Boosts the first stage voltage of the first boosting unit 111 to a preset magnification to finally increase to the RET mode output voltage.

Since the CET mode output voltage and the RET mode output voltage each have several voltage levels, the first stage voltage also has several levels of voltages for the CET mode and the RET mode, and the CET mode because the output voltage ranges of the CET mode and the RET mode partially overlap each other. The first stage voltage of and the first stage voltage of the RET mode partially overlap. Accordingly, according to the control of the operation unit 105, the first boosting unit 111 sets the DC output of the first DC power supply unit 101 to one of a plurality of first stage voltages corresponding to the RET mode output voltage or the CET mode output voltage. Boost up.

The first booster 111 converts the DC output of the first DC power supply 101 into one of a plurality of first stage voltages for a RET mode output voltage or a CET mode output voltage, and a pulse width modulation (PWM) circuit. Change the size of output voltage by using and high frequency transformer.

For example, referring to FIG. 2, the first booster 111 may include a PWM module 201, a first MOSFET Q1 and a second MOSFET Q2, a first transformer T1, a first diode, and a second diode ( D1, D2) and LPF (Low Pass Filter). As the output of the PWM module 201 alternately turns on the first MOSFET Q1 and the second MOSFET Q2, the first transformer T1 operates as an inverter while the first transformer T1 is turned on. A sine wave is output to the secondary side of the transformer T1. The output of the first transformer T1 is rectified through the first and second diodes D1 and D2 and the LPF, converted into a first voltage, and output to the second booster 115.

The frequency setting unit 113 includes an oscillator 117 and a divider 119, and outputs an oscillation signal having a predetermined output frequency (high frequency) to the second boosting unit 115. The divider 119 divides the oscillation frequency of the oscillator 117 into a preset output frequency (high frequency) and outputs the generated frequency to the second booster 115.

The second booster 115 converts the first stage voltage output from the first booster 111 into a pulse having a preset output frequency and boosts the voltage to a preset magnification and outputs the voltage to the switching unit 121.

For example, referring to FIG. 3, the second boosting unit 115 includes a third MOSFET Q3 and a second transformer T2. The high frequency oscillation signal output from the frequency setting unit 113 is input to a gate terminal of the third MOSFET Q3 to switch the third MOSFET Q3 to a preset output frequency (high frequency). The output of the third MOSFET Q3 and the output of the first booster 111 are connected to the primary side of the second transformer T2, whereby the output of the first booster 111 is interrupted at the output frequency and is converted into a high frequency pulse. The input is input to the primary side of the second transformer T2. The second transformer T2 boosts the high frequency pulse applied to the primary side at a predetermined magnification to output a high frequency pulse boosted to the RET mode output voltage or the CET mode output voltage.

The switching unit 121 includes a relay and the like, and outputs the output of the second boosting unit 115 to the CET output terminal 127 or the RET output terminal 125 under the control of the operation unit 105.

On the other hand, when the RET mode is selected, it is necessary to distribute a part of the output of the second boosting unit 115 to lower the output current compared to the CET mode. Since RET mode has no coating on the ceramic, the rate of current penetrating into the human body is high, so it uses a relatively small current compared to the CET mode in consideration of safety. Therefore, when the RET mode is selected, the output current must be changed to a value set lower than that of the CET mode output. Therefore, the current adjusting unit 123 is disposed between the switching unit 121 and the RET output terminal 125.

The current adjusting unit 123 divides the output of the second boosting unit 115 input through the switching unit 121 to output a current having a predetermined size to the RET output terminal 125. For example, the current adjusting unit 123 may be implemented as a high voltage capacitor disposed in parallel to the RET output terminal 125. The high voltage capacitor disposed in parallel with the RET output terminal 125 acts as a reactance of a constant magnitude with respect to the high frequency output to form a current distribution path.

Hereinafter will be described the operation of the high-frequency electrotherapy device 100 of the present invention described above. The electrical circuit paths of the RET mode and the CET mode are the same, and two modes of output signals are output through one circuit.

<RET mode>

When the user operates the manipulation unit 105 and selects one of a plurality of voltage levels of the RET mode while selecting the 'RET mode', the manipulation unit 105 may set the first booster 111 as a preset parameter for the RET mode operation. The first booster 111 controls the first voltage for the output voltage selected by the user. In addition, the operation unit 105 controls the switching unit 121 to be connected to the current adjusting unit 123 according to the RET mode.

While the first stage voltage is output from the first booster 111 to the second booster 115, the frequency setting unit 113 outputs an output frequency (high frequency) oscillation signal to the second booster 115. . The second booster 115 converts the output of the first booster 111 into a high frequency output from the frequency setting unit 113 to convert the pulse into a pulse and boosts the final output voltage through the second transformer T2. do. Therefore, the voltage output from the second boosting unit 115 becomes a voltage selected by the user from the RET mode.

The switching unit 121 switches the output of the second boosting unit 115 to the current adjusting unit 123 under the control of the operation unit 105, and is output through the RET output terminal 125 via the current adjusting unit 123. The RET mode output is output in a state where the rated current is reduced by the current distribution circuit of the current adjusting unit 123.

<CET Mode>

When the user controls the operation unit 105 to select the CET mode output and selects one of a plurality of voltage levels of the CET mode, the operation unit 105 controls the first booster 111 to a set value for the CET mode operation. The first booster 111 controls to output the first stage voltage for the voltage level selected by the user. In addition, the operation unit 105 controls the switching unit 121 to be connected to the CET output terminal 127.

While the first stage voltage is output from the first boosting unit 111 to the second boosting unit 115, the frequency setting unit 113 outputs an output frequency (high frequency) signal to the second boosting unit 115. The second booster 115 converts the output of the first booster 111 into a high frequency output from the frequency setting unit 113, converts the pulse into a pulse, and boosts the final output voltage through the second transformer T2. Therefore, the voltage output from the second boosting unit 115 becomes a voltage selected by the user from the CET mode.

The switching unit 121 directly outputs the output of the second boosting unit 115 to the CET output terminal 127 without passing through the power adjusting unit 123 under the control of the manipulation unit 105. Therefore, the CET mode output has a higher driving current than the RET mode output.

As described above, the first booster 111 and the switching unit 121 perform different operations according to the RET mode and the CET mode by the operation unit 105, but the remaining circuit parts do not distinguish between the RET mode and the CET mode. It works the same without.

Although the above has been illustrated and described with respect to preferred embodiments of the present invention, the present invention is not limited to the above-described specific embodiments, it is usually in the technical field to which the invention belongs without departing from the spirit of the invention claimed in the claims. Various modifications can be made by those skilled in the art, and these modifications should not be individually understood from the technical spirit or the prospect of the present invention.

Claims (5)

High frequency electrotherapy machine,
An operation unit for receiving a selection for selecting one of a RET mode and a CET mode from a user;
A DC power supply unit converting commercial AC power into DC power;
A high frequency oscillator for boosting the output of the DC power supply to an output voltage for the CET mode or an output voltage for the RET mode and oscillating the boosted voltage at a predetermined high frequency according to the control of the operation unit;
A switching unit for switching the output of the high frequency oscillator to one of a RET mode output terminal and a CET mode output terminal; And
A current adjusting unit provided between the switching unit and the RET mode output terminal and the CET mode output terminal to adjust a current output to the RET mode output terminal or the CET mode output terminal;
The high frequency oscillation unit,
A first boosting unit boosting the output of the DC power supply unit to one of a plurality of first stage voltages corresponding to the RET mode output voltage or the CET mode output voltage according to the control of the operation unit;
A frequency setting unit for dividing an output of the oscillator and outputting a predetermined high frequency oscillation signal; And
And a second booster configured to change the output of the first booster to a high frequency pulse by using the high frequency oscillation signal of the frequency setting unit and to boost the signal at a predetermined magnification and finally boost to the RET mode output voltage or the CET mode output voltage. And a two-stage boosted structure to adjust the CET mode output voltage and the RET mode output voltage of different magnitudes through a single system.
delete The method of claim 1,
The second boosting unit
A MOSFET (Q3) for converting an output of the first booster into a pulse form of the high frequency while switching to a high frequency oscillation signal output from the frequency setting unit; And
And a transformer (T2) for boosting the output of the MOSFET (Q3) at a predetermined magnification and outputting the output to the switching unit.
The method of claim 1,
The current adjusting unit
And a high voltage capacitor arranged in parallel to the terminal for the RET mode.
The method of claim 1,
And a DC power supply unit converting the commercial AC power into a DC operating voltage of the operation unit to supply operating power of the operation unit.

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