KR100773119B1 - Medical combined stimulator - Google Patents

Abstract

A combination type medical stimulator is provided to control automatically physical stimulation according to the skin state of a user and to prevent overcurrent by properly restraining the magnitude of current. In a combination type medical stimulator, an ultrasonic scan unit(320) finds out a spot where current flows intensively, automatically scans frequency at predetermined intervals within a range of 20~30kHz by using the series resonance characteristic that the maximum current flows in a maximum resonant point, according to a control signal, memorizes the scanned frequency as tuned frequency, and performs ultrasonic treatment by the tuned frequency. A sequential scan unit(330) automatically inspects the resistance characteristic of ionic materials coming into contact with resistance of the skin according to the control signal, scans the magnitude of the current penetrating through the skin at 20~1000muA and fixes the scanned current as proper current, and keeps a fixed value constant. A main control unit(110) performs the correspondent operation by outputting the control signal to the ultrasonic scan unit or the sequential scan unit according to a user's choice, shows the operation state in real time through a display device, and executes the entire control operation.

Description

Medical Combined Stimulator

1 is a block diagram briefly showing the configuration of a medical combination stimulator according to an embodiment of the present invention.

Figure 2 is a simplified block diagram showing the configuration of the ultrasonic scanning unit according to an embodiment of the present invention.

3 is a block diagram briefly showing a configuration of a PLL driver applied to an embodiment of the present invention.

Figure 4 is a block diagram showing a brief configuration of a sequential scan unit according to an embodiment of the present invention.

*** Description of the main parts of the drawing ***

100: main control unit 110: main control unit

200: PLL drive unit 210: PLL control unit

300: AMP drive unit 310: AMP control unit

320: ultrasonic scanning unit 330: sequential scanning unit

400: vibrator 500: scrubber

600: ground rod 700: electrolytic rod

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a medical combination stimulator, and in particular, a device that automatically adjusts a physical stimulus according to a user's skin condition in treating a skin trouble by combining sonophoresis and iontophoresis. It is about.

In general, as a combination stimulator is a device used for skin beauty, there is a skin beauty device developed to improve absorption of cosmetics using ionic action. Skin beauty machine by the ion action is expensive and at the same time has a large appearance is not easy to buy and use universally. At the same time, such a skin care device is complicated and difficult to operate, while the effect is simple and has many problems in use.

On the other hand, as a cosmetic device using a low frequency to improve the shortcomings of the beauty device depending on the ion action as described above, by providing a physical stimulation to the skin by varying the output state of the low frequency, there is a low frequency beauty device that removes the waste by the ion action In other words, low-frequency simple electrical stimulation and ionic skin treatment are performed, usually using iontophoresis.

The electrophoretic ion method is a method of delivering a drug into the skin by flowing a weak current between a contact rod held by a hand and a rod (electrolytic rod) of a counter electrode (metal) buried with an electrolyte in contact with other parts of the human body. When the electrolyte is dried, the resistance is high, and the current output is manually adjusted, which causes problems such as burns caused by overvoltage and unpleasant stimulation to the skin.

Therefore, the present invention was devised to solve the above-mentioned problems, and in the treatment of skin problems by combining ultrasonic therapy and iontophoresis, by automatically adjusting the physical stimulus according to the skin condition of each user. Its purpose is to give.

It is also an object of the present invention to provide an apparatus for preventing an overcurrent by limiting the magnitude of the current to move into the skin to an appropriate amount.

Medical combination stimulator of the present invention for achieving the above object in the medical combination stimulator for treating problems of the skin by combining the ultrasonic therapy (sonophoresis) and iontophoresis, the maximum resonance point which is the characteristic of the ultrasonic oscillator according to the control signal By using the series resonance characteristic of the maximum current flowing in, the frequency is automatically scanned at random intervals between 20 kHz and 30 kHz to find the point where the most current flows, and the frequency of this point is memorized as the tuning frequency and then this tuning An ultrasound scan unit configured to perform ultrasound therapy at a frequency; In accordance with the control signal, the resistance of the ionic substance in contact with the skin is automatically inspected, and the amount of current that moves into the skin is scanned from 20 kW to 1000 kW to be fixed at the appropriate current, and then the fixed value is kept constant. A sequential scan unit; And a main control unit for performing an overall control operation such as outputting a control signal to the ultrasonic scanning unit or the sequential scanning unit according to a user's selection to perform a corresponding operation, and displaying the operation items through a display device in real time. It features.

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

1 is a block diagram schematically showing the configuration of a medical combination stimulator according to an embodiment of the present invention, as shown in the main control unit 100, PLL driving unit 200, AMP driving unit 300, oscillator 400 ), A scrubber 500, a ground rod 600, and an electrolytic rod 700, and the main control unit 100 includes a main control unit 110, a display unit 120, an input unit 130, and an audio output unit 140. The AMP driving unit 300 includes an AMP control unit 310, an ultrasonic scan unit 320, and a sequential scan unit 330.

The ultrasonic scanning unit 320 is a signal converting unit 321 for converting the square wave signal input to the sinusoidal signal as shown in FIG. A signal attenuator 322 configured to receive an output of the signal converter 321 and adjust gain according to a control signal; A power amplifier 323 for amplifying and outputting the output of the signal attenuator 322 according to a muting state release signal; A first transformer T1 converting the output of the power amplifier 323 into a predetermined value and outputting the converted value; An output selector 324 for selecting and outputting an output of the first transformer T1 from an ultrasonic wave or a scrubber 500 or an oscillator 400; A second transformer T2 for converting a current flowing through the vibrator 400 into a predetermined value and outputting the converted value; Rectifying diode (D3) for rectifying and outputting the output of the second transformer (T2): an inverter amplifier (325) for inverting the output of the rectifying diode (D3) and outputs a value multiplied by a gain; And an AMP controller 310 that determines the strength of the current flowing through the current oscillator through the output of the inverter amplifier 325 and outputs a control signal for gain adjustment to the signal attenuator 322.

In addition, the sequential scanning unit 330 may include an active filter 311 which inverts an input pulse width modulation (PWM) signal as shown in FIG. 4 and then removes and outputs ripple; First and second comparators 312 and 313 which receive the output of the active filter 311 through the inverting terminal (-) and compare the signal with the signal input to the non-inverting terminal (+); A transistor (FET, F1) turned on / off according to the output of the second comparator (313) to apply or cut off the output of the power supply voltage (VDD); The power supply voltage applied from the transistor F1 is output to the electrolytic rod 700 with the polarity according to a control signal, and the current flowing through the ground rod 600 is input to the first and second comparators 312 and 313. A polarity switching unit 314 outputting the non-inverting terminal (+); And controlling the level of the PWM signal by determining whether the output of the active filter 311 corresponds to a preset reference value, and outputting a control signal to the polarity switching unit 314 to the electrolytic rod 700. It consists of an AMP control unit 310 for controlling the polarity to be applied.

Referring to the operation of the embodiment according to the present invention configured as described above are as follows.

The functional operation of the embodiment according to the present invention is largely divided into two types, and may be divided into a function using an ultrasonic therapy function and an iontophoresis method.

First, referring to the ultrasound treatment function, as shown in FIGS. 1 and 2, when a sequential scan instruction is input through the input unit 130 of the main controller 100, the main control unit 110 may control the PLL driving unit 200. The control signal is output to the PLL controller 210 and the AMP controller 310 of the AMP driver 300.

Accordingly, the PLL controller 210 transmits frequency data to the VCO counter 220 as shown in FIG. 3, and the PLL synthesizer 240 outputs a reference signal to the oscillator OSC 230. The output of the VCO counter 220 generates a signal of 2 MHz, which is output as a square wave signal of 20 kHz through the divider 250.

The square wave signal is input to the signal converting unit 321 of the ultrasonic scanning unit 320 as shown in FIG. 2 and is converted into a sine wave signal, and then output is made to a predetermined level and received by the signal attenuation unit 322. After the gain is adjusted according to the control signal of the AMP controller 310, the amplification is amplified by the power amplifier 323. The control signal adjusts the gain of the signal attenuator 322 to increase the degree of amplification step by step. At this time, if the preset reference value (current value) does not come out through the stepwise scan operation, it is determined that the connection state with the vibrator is a disconnection state or the like and outputs an error message through the display unit 120.

When the reference value is determined in the above, the frequency is automatically scanned at intervals of 100 kHz between 20 kHz and 30 kHz to find a point that becomes the maximum current value, and the frequency of this point is stored as a tuning frequency. Thereafter, the scrubber 500 contacts the skin, and then vibrates the vibrator 400 at the tuning frequency to start the ultrasonic treatment.

Thereafter, in order to prevent the tuning frequency from changing suddenly due to the heat generated from the vibrator 400 during operation, the current strength of the tuned frequency is re-measured every 2 minutes after the ultrasonic treatment operation, and the upper and lower 100 전류 Measure the current strength of the off-frequency and readjust the tuning frequency toward the larger of the two current intensities.

In addition, when the main control unit 110 presses the start operation key through the input unit 130, the main current unit 110 recognizes the current strength at the previously used tuning frequency as a reference current, and 1 to -1 at the tuning frequency and the tuning frequency 1 ㎑ away from the tuning frequency. Measure the current strength by scanning at 100 Hz intervals to the off-frequency and make the largest point the new tuning frequency.

Secondly, after the user holds the ground rod 600 by the operator, the electrolyte is applied to the electrolytic rod 700 and contacted with the affected part of the subject, and then the operator selects a function for iontophoresis. The output control signal is input to the AMP control unit 310, and outputs a pulse width modulation (PWM) to the active filter 311, the active filter 311 inverts the PWM signal (ripple) after Remove and print At this time, the output of the active filter 311 is also received from the AMP control unit 310 to determine whether it corresponds to a predetermined reference value to control the level of the PWM signal.

In addition, the output of the active filter 311 is input to the inverting terminal (-) of the first and second comparators 312 and 313, and outputs in comparison with the signal input to the non-inverting terminal (+), the second According to the output of the comparator 313, the transistor F1 is turned on / off to apply or cut off the output of the power supply voltage VDD (constant current effect).

The power supply voltage applied from the transistor F1 is input by the polarity switching unit 314 and output to the electrode 700 with the polarity according to the control signal of the AMP control unit 310. When the control signal is a high signal, The current applied from the transistor F1 is applied to the electrolytic rod 700 in contact with the skin through the polarity switching unit 314, and the current flowing through the human body is again through the ground rod 600 through the polarity switching unit 314. In this case, the skin (electrolytic rod) becomes the positive electrode and the ground rod (the hand) becomes the negative electrode so as to be positive.

The polarity switch unit 314 outputs a current input through the grounding rod 600 to the non-inverting terminal (+) of the first and second comparators 312 and 313. The value of comparator 312 outputs high.

However, when the output of the first comparator 312 is a low signal, the electrolyte applied to the affected part is exhausted and the human contact resistance value is increased. Therefore, the AMP control unit 310 displays a warning message to replenish the electrolyte. 120, and if the low signal is continuously input for 5 seconds or more, the polarity switching unit 314 is controlled to generate a dangerous signal sound through the sound output unit 140 and then readjust the current value downward. do.

Although specific embodiments of the present invention have been described in detail above, the present invention is not limited thereto, and those skilled in the art may make various changes and modifications based on the technical idea of the present invention.

As described above, the medical combination stimulator of the present invention automatically adjusts the physical stimulus according to each skin condition of the user, thereby providing convenience for use by eliminating the need for the user to manually adjust the frequency every time. By limiting the magnitude of the current to be moved to an appropriate amount to prevent overcurrent, there is an effect such as not causing an unpleasant irritation to the burn and skin caused by the overvoltage.

Claims (7)

In a medical combination stimulator for treating skin problems by combining sonophoresis and iontophoresis, According to the control signal, using the series resonance characteristic that the maximum current flows at the maximum resonance point, which is the characteristic of the ultrasonic oscillator, the frequency is automatically scanned at random intervals between 20 Hz and 30 Hz to find the point where the most current flows. An ultrasound scanning unit for storing the frequency of the tuning frequency and performing an ultrasound treatment at the tuning frequency; In accordance with the control signal, the resistance of the ionic substance in contact with the skin is automatically inspected, and the amount of current that moves into the skin is scanned from 20 kW to 1000 kW to be fixed at the appropriate current, and then the fixed value is kept constant. A sequential scan unit; And And a main control unit for performing a general control operation to output a control signal to the ultrasonic scan unit or the sequential scan unit according to a user's selection to perform a corresponding operation, and to display the operation items through a display device in real time. Medical combination stimulator. The method of claim 1, wherein the ultrasonic scanning unit A signal converting unit converting the input square wave signal into a sine wave signal and outputting a predetermined level; A signal attenuator configured to receive an output of the signal converter and adjust gain according to a control signal; A power amplifier configured to amplify and output the output of the signal attenuator according to a muting state release signal; A first transformer converting an output of the power amplifier into a predetermined value and outputting the converted value; An output selection unit for selecting and outputting an output of the first transformer from an ultrasonic wave or a scrubber oscillator; A second transformer converting a current flowing through the vibrator into a predetermined value and outputting the converted current; Rectifying diode rectifying and outputting the output of the second transformer: An inverting amplifier for inverting the output of the rectifying diode and outputting a value multiplied by a gain; And And an AMP control unit configured to determine the strength of current flowing through the inverter through the output of the inverting amplifier and output a control signal for gain adjustment to the signal attenuator. The method of claim 1, wherein the sequential scan unit An active filter which inverts an input pulse width modulation (PWM) signal and removes ripple and outputs the ripple; First and second comparators configured to receive an output of the active filter through an inverting terminal (−) and compare the signal with an input to a non-inverting terminal (+); A transistor configured to be turned on / off according to the output of the second comparator to apply or cut off the output of the power supply voltage VDD; A polarity switching unit for outputting a power supply voltage applied from the transistor to an electrolytic rod with a polarity according to a control signal, and receiving a current flowing through the ground rod and outputting the current to the non-inverting terminal (+) of the first and second comparators; And The AMP controller controls the level of the PWM signal by determining whether the output of the active filter corresponds to a preset reference value, and outputs a control signal to the polarity switching unit to control the polarity applied to the electrolytic rod. Medical combination stimulator, characterized in that. The method of claim 1, wherein the ultrasonic scanning unit A medical combination stimulator characterized in that the frequency is automatically scanned at intervals of 100 kHz between 20 kHz and 30 kHz to set the point at which the maximum current is reached. The method of claim 1, wherein the ultrasonic scanning unit After every two minutes after the ultrasonic treatment operation, the current intensity of the tuned frequency is re-measured, and the current intensity of the frequency that is out of the upper and lower 100 Hz of the tuning frequency is measured to readjust the tuning frequency toward the larger of the two current intensities. Medical combination stimulator. The method of claim 1, wherein the ultrasonic scanning unit The medical combination stimulator characterized in that it is determined that the connection state with the vibrator is disconnected when the reference value does not come out by the stepwise scan operation to output an error message. The method of claim 3, wherein the AMP control unit When the output of the first comparator receives a low signal, a warning message is displayed to replenish the electrolyte, and if the low signal is continuously input for more than 5 seconds, a dangerous beep is generated and then the polarity is adjusted to adjust the current value downward. A medical combination stimulator comprising a function of controlling the switching unit.

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