JP2013059556A - Beauty apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a beauty apparatus for efficiently introducing active ingredients into the skin while suppressing stimuli felt as pain with applied voltage waveforms as appropriate in conducting the skin and for achieving excellent beauty effect.SOLUTION: In applying voltage to the skin regarding electroporation, value of a digital signal is adjusted so that its increased amount or decreased amount may become substantially stable, an increase/decrease is output, and a change of voltage of an analog signal waveform which D/A converts the same is output by electrode parts 12, 13, so that a nearly triangular repetitive waveform electroporation occurs to the skin due to voltage application, and stimuli felt as pain when conducted is suppressed, perforation on the skin by electroporation is appropriately performed to introduce active ingredients to be introduced into the skin reliably through the skin, and considerable beauty enhancement is achieved.

Description

  The present invention relates to a cosmetic device that gives a predetermined cosmetic effect to a user's skin, and more particularly to a device that introduces a substance having a cosmetic effect into the skin by electroporation.

  Beauty devices that perform various operations related to predetermined beauty and skin beautification on the skin (skin) of the user's face, etc., are simple functions that are used at home and those that are low output, and are multifunctional that are used for business purposes. Various types are used, including those with high output. Such beauty devices include those that cool or heat the skin, those that apply suction to the skin, those that apply steam or mist to the skin, those that irradiate the skin with light, and transmit ultrasonic vibrations to the skin. In general, a device that conducts ion introduction (iontophoresis) by passing a weak current through the skin is used.

  In addition, a technique of electroporation (electroporation method) in which minute pores are generated in a cell membrane for a short time by applying a pulsed voltage for a short time, and a substance is sent into the cell through the pores has recently become a beauty. It has been applied to the field. Specifically, by applying a pulsed voltage to the skin covered with human keratin, a minute hole is formed in the skin, and this hole is used as a component having a cosmetic effect, such as iontophoresis. This method uses a route for large molecules that cannot be introduced by this method, for example, collagen and hyaluronic acid, and administers them through the skin into the body. As an example of such a cosmetic device using conventional electroporation, there are those disclosed in Japanese translations of PCT publication No. 2002-520101 and Japanese Patent Application Laid-Open No. 2009-213585.

Special table 2002-520101 gazette JP 2009-213585 A

  Conventional beauty devices are configured as described in each of the above patent documents, and in such devices using electroporation, the electrodes are brought into contact with the skin and energized. It is known that the effect of perforation becomes higher as the applied voltage at the time of energization increases, and it is preferable to increase the applied voltage to the skin when emphasis is placed on the introduction of active ingredients into the skin.

  However, when the applied voltage is increased, irritation to the skin, which is felt as pain, increases, resulting in resistance to the use of such devices. On the other hand, if the applied voltage is suppressed to make it difficult to feel pain, there is a problem that the effect of transdermal introduction of the active ingredient cannot be sufficiently obtained due to the effect of pore formation in the skin. As shown in the above, a proposal has been made to make the applied voltage waveform special in order to achieve both suppression of pain and introduction effect.

  However, if a special and complex applied voltage waveform is generated in order to obtain a favorable effect, the waveform generation circuit becomes complicated and large-scale, and it becomes difficult to adjust the waveform according to the user. It has the problem of incurring up and deterioration in usability.

  The present invention has been made to solve the above-mentioned problems. When the current is applied to the skin, the applied voltage waveform is appropriate, and the percutaneous introduction of the active ingredient is efficiently performed while suppressing irritation felt as pain. An object of the present invention is to provide a beauty apparatus capable of obtaining an excellent beauty effect.

A beauty device according to the present invention includes a main body portion held by a user and a plurality of electrode portions disposed on a part of the main body portion, and the user's skin is interposed between the plurality of electrode portions. A digital control unit that outputs a preset n-bit (n is a natural number) digital signal at regular intervals in a cosmetic device that moves the substance to the user's skin using electroporation. And a D / A converter that obtains an analog signal having a continuous waveform change in voltage by digital-to-analog conversion of a digital signal output from the digital controller, and the plurality of electrodes are in contact with each other A voltage having a waveform based on the analog signal obtained by the D / A converter is applied between the electrodes to the energized state, and the digital control unit As emissions for mode, a size range of signal values over 2 ⁿ stages of the digital signal, gradually increasing or decreasing the value of the digital signal from a predetermined reference value up to a predetermined maximum or minimum value, further the A series of changes that decrease or increase from a maximum value or a minimum value to the reference value is repeated a plurality of times at a constant or changing period, and the digital control unit determines from the reference value of the value of the digital signal. Each increase amount or decrease amount at a certain interval until reaching the maximum value or the minimum value is set to be substantially constant within the time until the value of the digital signal reaches the maximum value or the minimum value from the reference value. The amount of decrease or increase of the digital signal value from the local maximum value or the local minimum value to the reference value at each predetermined interval, and the digital signal value from the local maximum value or the local minimum value to the reference value. Is substantially constant within the time required to reach

  Thus, according to the present invention, for the application of electroporation to the skin, the value of the digital signal reaches from the reference value to the maximum value or the minimum value, and further, a series of monotonic changes from the maximum value or the minimum value to the reference value. When a voltage is applied to the skin, which is obtained by D / A conversion, and has a waveform change that repeats a substantially convex or concave shape, it is less painful than other waveforms. On the other hand, based on what the applicant has found that the substance has excellent permeability into the skin, when applying voltage to the skin related to electroporation, the value of the digital signal is increased or decreased. The output is increased / decreased while being adjusted to be substantially constant, and the voltage change of the analog signal waveform obtained by D / A conversion is output from the electrode portion, so that a voltage of a substantially triangular repeated waveform is applied to the skin. Electroporation occurs, suppresses the stimulus felt as pain during energization, and appropriately advances the perforation to the skin by electroporation, so that the active ingredient to be introduced into the skin can be reliably introduced through the skin, A big beauty effect is given.

  In addition, the beauty device according to the present invention is configured so that the digital control unit determines the time from the maximum value or the minimum value to the maximum value or the minimum value from the reference value of the value of the digital signal. It is set longer than the time required to reach the reference value.

  As described above, according to the present invention, the time required to change from the reference value to the maximum value or the minimum value in the series of changes in the value of the digital signal is changed from the maximum value or the minimum value to the reference value. Is set to be longer than this time, and the rate of change up to the maximum value of the digital signal is equal to or less than the rate of change after the maximum value, and is substantially a triangle that is repeatedly applied from the electrode section through D / A conversion By changing the voltage change waveform of the waveform to a gradually increasing triangular wave or sawtooth wave, it is possible to suppress a large voltage from the beginning of voltage application for each waveform of energization to the skin, gently change the stimulation of energization, Suppresses the situation where the patient feels pain when energized.

Further, in the beauty device according to the present invention, if necessary, the digital control unit can set the maximum value or the minimum value of the digital signal within the range of the signal value over 2 ⁿ stages of the digital signal. The absolute value of the peak of the applied voltage between the plurality of electrode portions is set so as to be switchable to a plurality of levels that can take a range of 2V to 20V.

  As described above, according to the present invention, the maximum or minimum value of the digital signal has the effect of electroporation in the voltage waveform finally obtained between the electrodes by D / A conversion of the digital signal. By adjusting in advance to the extent that a voltage of 20V or less that is recognized as being 2V or more and less painful is applied, the generation of stimulation accompanying energization can be suppressed, and the state where it is difficult to feel the stimulation of energization is maintained. Electroporation can be advanced while achieving both a high beauty effect and pain suppression.

  Further, in the beauty device according to the present invention, the digital control unit gradually increases or decreases the value of the digital signal from the reference value to a predetermined maximum value or minimum value as necessary, and further, the maximum value Alternatively, the predetermined time required for a series of changes to be decreased or increased from the minimum value to the reference value is set as a range of 0.26 ms to 0.4 ms.

  As described above, according to the present invention, in the voltage waveform obtained by D / A converting the digital signal and finally between the electrodes during the period in which a series of changes are made to the value of the digital signal, By setting in advance to the extent that voltage is applied for a duration within the range where it is recognized that electroporation is effective, the skin is maintained in a state where it is difficult to feel irritation with an appropriate length of continuous energization time. The electroporation accompanying the energization of the battery can be advanced efficiently, and both high cosmetic effects and pain suppression can be achieved.

  Further, in the beauty device according to the present invention, the digital control unit gradually increases or decreases the value of the digital signal from the reference value to a predetermined maximum value or minimum value as necessary, and further, the maximum value Alternatively, a series of changes that are decreased or increased from the minimum value to the reference value are repeatedly performed at a cycle with a repetition frequency of 1.2 kHz to 1.5 kHz.

  As described above, according to the present invention, the cycle in which a series of changes in which the value of the digital signal increases or decreases is repeated in the voltage waveform finally obtained between the electrodes by D / A conversion of the digital signal. Energizing the skin while maintaining a state where it is difficult to feel irritation by setting the number of energizations per hour to an appropriate frequency by setting in advance to the extent that the voltage is applied with the repetition frequency of the wave in the range where there is recognized to be The electroporation associated with the active ingredient and the penetration of the active ingredient associated therewith can be efficiently advanced, and both a high cosmetic effect and pain suppression can be achieved.

Further, in the beauty device according to the present invention, if necessary, the digital control unit sets the value of the digital signal as the reference value within a range of signal values over 2 ⁿ stages of the digital signal as a muscle stimulation mode. From the predetermined value, the state of taking the predetermined value is continued for a predetermined time, and then a series of changes from the predetermined value to the reference value is repeated a plurality of times at a constant or changing period.

  As described above, according to the present invention, the value of the digital signal is output by repeatedly generating a series of changes including a period of continuing the state of taking a predetermined value separately from the case of electroporation. By outputting the voltage change of the analog signal waveform after A conversion from the electrode part, energization stimulation is generated in the skin by applying a voltage of a substantially rectangular repetitive waveform. In addition to introducing active ingredients into the skin by electroporation In addition to being able to give a massage effect to the muscles under the skin, activate the muscles, promote the penetration of active ingredients into the skin, and create a lifting effect that tensions and pulls up the skin You can also.

  Further, in the beauty device according to the present invention, the digital control unit gradually increases the value of the digital signal from the reference value to a predetermined maximum value as necessary, and further changes the value from the maximum value to the reference value. A series of changes that gradually decrease until reaching a predetermined minimum value from the reference value, and a series of changes that gradually increase from the minimum value to the reference value Are replaced at predetermined intervals.

  Thus, according to the present invention, the value of the digital signal increases to a maximum value and then decreases, and conversely, another series of changes in which the signal value decreases to a minimum value and then increases. The change is repeatedly output in a state where it is changed every predetermined cycle, and after the D / A conversion, the waveform change in which the substantially triangular convex waveform and the concave waveform are changed every predetermined cycle, that is, a positive voltage After the waveform of 1 or more times appears, the voltage of the waveform change in which the waveform of the reverse negative voltage appears is applied to the skin, so that the positive / negative of the voltage applied at the electrode part changes at predetermined intervals, The bias of the skin charge will be canceled out, and the polarization and charging state of the skin due to voltage application with repeated waveform changes of the same polarity can be prevented, and the applied voltage waveform on the skin will be disturbed due to the influence of charging. Suppress and apply voltage wave As a waveform which changes based on the reliable 0 potential, appropriate to the skin can perform electroporation is further enhanced transdermal delivery efficiency of the active ingredient. In particular, based on the adjustment of the value of the digital signal, in the case of giving a change in which the waveform of the positive voltage and the waveform of the negative voltage are alternately repeated in the waveform of the applied voltage, the positive / negative relationship of the electrode portions becomes equal, Regarding the progress of electroporation in the skin around each electrode part and the penetration of the active ingredient into the skin, there is no bias due to the polarity of the electrode part, and a uniform result can be obtained.

  Further, in the beauty device according to the present invention, the digital control unit gradually increases or decreases the value of the digital signal from the reference value to a predetermined maximum value or minimum value as necessary, and further, the maximum value Alternatively, after a series of changes that decrease or increase from the minimum value to the reference value is repeated a plurality of times at a constant or changing period, the value of the digital signal is changed from the reference value to a predetermined minimum value or maximum value. A series of changes that gradually decrease or increase until reaching the reference value from the minimum value or maximum value is repeatedly performed a plurality of times in the period, and then the former series. The state in which the change is repeated a plurality of times in the cycle and the state in which the latter series of changes are repeated a plurality of times in the cycle are alternately repeated.

  As described above, according to the present invention, the value of the digital signal decreases after increasing, or increases after decreasing, and a series of changes are repeated a plurality of times, and another series of increasing / decreasing relations opposite thereto. The state in which the change is repeated a plurality of times alternately occurs repeatedly, and the applied voltage waveform from the electrode part obtained through D / A conversion of the digital signal is a state in which a substantially triangular waveform is repeated at predetermined time intervals. By generating it while reversing the polarity, the basic pattern of the voltage waveform applied at the electrode part is left as it is, and the waveform of the waveform is reversed by reversing the polarity of the waveform every predetermined time. In this way, the polarity of each electrode part in the energized state can be switched, and the polarity of the voltage applied to the electrode part is not biased to one side, and the polarity of the electrode part affects the voltage application to the skin. The Sealed with, for progression and of the active ingredient to the skin penetration of electroporation in the skin around the electrode, without causing bias due polarity of the electrodes, it is possible to provide a uniform effect. Furthermore, only by adjusting the digital signal value by the digital control unit, it is possible to perform complicated processing such as switching between positive and negative in the repeated change of the applied voltage waveform without using a complicated analog waveform generation circuit, and appropriate change-rich A voltage application state can be easily realized.

  Further, the beauty device according to the present invention allows the digital control unit to repeatedly perform the series of changes in the value of the digital signal as necessary, through the user's skin between the plurality of electrode units. Immediately after the energized state is started, the maximum value or the minimum value is gradually increased or decreased from the initial value as the change is repeated, and after a predetermined time has elapsed, a predetermined steady value is reached.

  As described above, according to the present invention, while the digital signal value repeats a series of increasing and decreasing changes, immediately after the energization state through the skin between the plurality of electrode portions starts, the signal value increases and decreases Each time the series of changes are repeated, the local maximum value or the local minimum value is gradually increased or decreased from the initial value to give a change that approaches a predetermined steady-state value. The waveform of the voltage applied to the skin from the electrode section through the processing in the amplification section immediately after the start of energization causes a waveform change that is repeated while the substantially triangular waveform gradually increases its peak value. By gradually increasing the applied voltage, it is possible to suppress irritation to the skin immediately after the start of energization, and to start the energization without feeling as much pain and discomfort as possible, so that a steady state can be achieved. Improve the quality of in can be achieved. Furthermore, it is possible to perform complex processing such as gradually changing the peak value of the applied voltage waveform without using a complicated analog waveform generation circuit, only by adjusting the digital signal value by the digital control unit, and an appropriate and varied A voltage application state can be easily realized.

  In addition, in the beauty device according to the present invention, as necessary, the digital control unit repeatedly causes the series of changes in the value of the digital signal to pass through the skin of the user between the plurality of electrode units. Immediately after the energized state is started, the repetition period of the series of changes is gradually reduced from the initial value as the series of changes are repeated, and after a predetermined time has elapsed, a predetermined steady value is reached. is there.

  As described above, according to the present invention, the value of the digital signal increases or decreases immediately after the energization state through the skin between the plurality of electrode portions is started while the value of the digital signal repeats a series of changes. Each time the series of changes is repeated, the period of the series of changes is gradually shortened from the initial value to give a change that approaches a predetermined steady period, thereby allowing the D / A conversion unit and amplification of the digital signal. Waveform change in which the waveform of the voltage applied to the skin from the electrode part through the processing in the part shifts from a state where the interval of the repeated substantially triangular waveform is largely open immediately after the start of energization to a state where the interval is gradually reduced Immediately after the start of energization, the frequency of voltage application to the skin can be suppressed, and stimulation of the skin related to energization immediately after the start of energization can be suppressed, and energization can be started without feeling as much pain and discomfort as possible. Will be able to shift to a steady state gradually increased to the frequency of the voltage applied together with, thereby the quality in terms of feeling. Furthermore, only by adjusting the digital signal value by the digital control unit, complicated processing such as gradually changing the repetition cycle of the applied voltage waveform can be performed without using a complicated analog waveform generation circuit, and appropriate changes can be made. A voltage application state can be easily realized.

  Further, the beauty device according to the present invention allows the digital control unit to repeatedly perform the series of changes in the value of the digital signal as necessary, through the user's skin between the plurality of electrode units. Immediately after the energized state starts, as the change is repeated, the predetermined time required for the series of changes is gradually increased from the initial value, and after a predetermined time elapses, the predetermined steady value is reached. .

  As described above, according to the present invention, the value of the digital signal increases or decreases immediately after the energization state through the skin between the plurality of electrode portions is started while the value of the digital signal repeats a series of changes. Each time the series of changes are repeated, the time required for the series of changes is gradually increased from the initial value to give a change that approaches a predetermined steady state value, so that the digital signal D / A converter and amplifier After the processing in step 1, the waveform of the voltage applied to the skin from the electrode portion immediately shifts from a state in which the duration of one waveform of the repeated substantially triangular shape is extremely short to a state in which the duration is gradually increased immediately after the start of energization. Immediately after the start of energization, the duration of voltage application to the skin can be shortened to suppress irritation to the skin related to energization immediately after the start of energization, and the energization can be performed without feeling as much pain and discomfort as possible. Open Are allowed, it is able to migrate gradually lengthened the duration of the voltage application over time a steady state, thereby the quality in terms of feeling. Furthermore, only by adjusting the digital signal value by the digital controller, complicated processing such as gradually changing the duration of one waveform of the applied voltage is possible without using a complicated analog waveform generation circuit. An appropriate voltage application state can be easily realized.

1 is a schematic configuration diagram of a beauty device according to a first embodiment of the present invention. 1 is a block diagram of a beauty device according to a first embodiment of the present invention. It is an analog signal waveform explanatory drawing after a digital signal output state from a digital control part and D / A conversion in a beauty apparatus concerning a 1st embodiment of the present invention. It is explanatory drawing of the difference of the digital signal output for every level in the beauty apparatus which concerns on the 1st Embodiment of this invention, and an analog signal waveform. It is application voltage waveform explanatory drawing in the electrode part in the beauty apparatus which concerns on the 1st Embodiment of this invention. It is an energization state explanatory view to skin by the cosmetics device concerning a 1st embodiment of the present invention. It is another applied voltage waveform explanatory drawing in the electrode part in the beauty apparatus which concerns on the 1st Embodiment of this invention. It is arrangement | positioning explanatory drawing of the other electrode part in the beauty apparatus which concerns on the 1st Embodiment of this invention. It is an analog signal waveform explanatory drawing after a digital signal output state from a digital control part and D / A conversion in a beauty apparatus concerning a 2nd embodiment of the present invention. It is an analog signal waveform explanatory drawing after the other digital signal output state and D / A conversion from the digital control part in the beauty apparatus which concerns on the 2nd Embodiment of this invention. It is explanatory drawing of the applied voltage waveform in the electrode part in the beauty device which concerns on the 3rd Embodiment of this invention. It is an analog signal waveform explanatory drawing after a digital signal output state from a digital control part and D / A conversion in a beauty apparatus concerning a 3rd embodiment of the present invention. It is other application voltage waveform explanatory drawing in the electrode part in the beauty device which concerns on the 3rd Embodiment of this invention. It is application voltage waveform explanatory drawing in the electrode part in the beauty device which concerns on the 4th Embodiment of this invention. It is application voltage waveform explanatory drawing in the electrode part in the cosmetics device which concerns on the 5th Embodiment of this invention. It is application voltage waveform explanatory drawing in the electrode part in the beauty device which concerns on the 6th Embodiment of this invention. It is application voltage waveform explanatory drawing in the electrode part in the cosmetics device which concerns on the 7th Embodiment of this invention. It is explanatory drawing of an active ingredient penetration state for every applied voltage waveform in the skin sample to which the beauty apparatus (electrode part tip diameter φ7.5 mm) of the present invention is applied. It is explanatory drawing of an active-component penetration state for every applied voltage waveform in the skin sample to which the beauty apparatus (electrode part tip diameter (phi) 22 mm) of this invention is applied.

(First embodiment of the present invention)
Hereinafter, a beauty apparatus according to a first embodiment of the present invention will be described with reference to FIGS.
In each of the drawings, the beauty device 1 according to the present embodiment includes a main body portion 11 held by a user, and two electrodes that are disposed at an end portion of the main body portion 11 and are used for energization related to beauty on the skin 50. The parts 12 and 13 and the main body 11 are arranged separately from each other and include a control unit 15 that adjusts and controls the energization state between the electrode parts 12 and 13 through the skin of the user.

  The main body portion 11 has the electrode portions 12 and 13 disposed at one end, and a predetermined length range on the other end side is a thickness suitable for a user to hold it by hand during use. The cable 14 for electrical connection with the control unit 15 is coupled to the other end of the main body that is the longitudinal end of the grip 11a. The main body 11 can be provided with a built-in vibration source such as a vibrator so as to add vibration to the skin 50 along with energization to enhance the cosmetic effect.

  The electrode portions 12 and 13 are made of a conductive material such as metal, have a substantially spherical curved surface portion that can contact the skin 50, and project from the end of the body portion 11. A cosmetic operation related to energization such as electroporation is performed on the skin 50 directly. These electrode portions 12 and 13 are electrically connected to the control portion 15 via the main body portion 11 and the cable 14, and can be energized between the two electrode portions 12 and 13 via the user's skin. It is a configuration.

  For energization, the control unit 15 applies a voltage between the two electrode parts 12 and 13 so that the energization can occur, and then, if necessary, a lotion containing a component to be permeated into the skin. When the electrode parts 12 and 13 are in direct contact with the facial skin 50 to which the liquid agent is applied, the electrode parts 12 and 13 are in an energized state through the user's skin 50. In this case, the human body becomes a conductor.

  As the electrode portions 12 and 13, it is desirable to use a material that is stable against energization, such as titanium. In other words, if titanium with high stability is used on the electrode surface, electrolysis does not occur due to energization even when the skin is energized, and metal ions do not elute on the surfaces of the electrode parts 12 and 13 and can be used safely. it can. The electrode surface material is preferably pure titanium, but may be a titanium compound. In addition to using metal such as gold in addition to titanium, it may have a structure formed by attaching a conductor such as metal to the surface of an elastic body such as conductive resin, conductive rubber, or rubber, or arranging a thin film of conductor. it can.

  The control unit 15 is disposed as a separate housing from the main body unit 11 and is connected to the main body unit 11 via the cable 14 to control the energization between the electrode units 12 and 13. The control unit 15 is a digital control unit that outputs a preset n-bit (n is a natural number) digital signal at predetermined intervals, for example, 10 μs intervals, as a specific control mechanism for energization between the electrode units 12 and 13. A control unit 16, a D / A conversion unit 17 that obtains an analog signal having a continuous waveform change in voltage by digital-to-analog conversion of the digital signal output from the digital control unit 16, and the D / A conversion unit The amplification unit 18 converts the analog signal obtained in step 1 into a predetermined voltage amplitude for applying voltage to the skin.

  The control unit 15 sets a mode of energization operation for each cosmetic use. In the present embodiment, an electroporation mode in which an active ingredient such as skin lotion penetrates deep into the skin, and energization stimulation. There are two muscle stimulation modes that activate the muscles.

As the electroporation mode, the digital control unit 16 has a signal value size range over 2 ⁿ stages of an n-bit (n is a natural number) digital signal, for example, 2 ⁸ = 256 stages in the case of 8 bits. A series of gradually increasing the value of the digital signal from a value of 0 as the reference value to a predetermined maximum value and further decreasing from the maximum value to 0 in a range of signal values over a range. The predetermined time required for this series of changes becomes a length in the range of 0.26 ms to 0.4 ms, and a predetermined period, for example, the repetition frequency becomes a predetermined value of about 1.2 kHz to 1.5 kHz. Such a digital signal is output by setting it to be repeated a plurality of times with a predetermined pause period in between.

  In this electroporation mode, the digital control unit 16 increases each increase amount at regular intervals from the digital signal value 0 to the maximum value, from the digital signal value 0 to the maximum value. It is almost constant in the time to reach. Similarly, the respective reduction amounts of the digital signal value from the local maximum value to 0 are set to be substantially constant within the time from the local signal value reaching the local maximum value to 0. Further, the digital control unit 16 sets the time from the digital signal value 0 to the maximum value (or minimum value) to be the same as the time from the maximum value (or minimum value) to 0. ing. As a result, the voltage change waveform of the analog signal obtained by D / A converting the digital signal becomes a triangular wave in which an isosceles triangular wave combining linear monotonous increase / decrease changes is repeated.

  In this electroporation mode, it is contained in a liquid preparation such as lotion previously applied to the skin surface with energization that causes a triangular wave voltage change between the electrode portions 12 and 13 via the skin 50. In this mechanism, an active ingredient composed of relatively large molecules is introduced and penetrated into the skin through micropores generated in the skin by electroporation based on voltage application to the skin. The method of percutaneous introduction of a substance by this electroporation is a known method, and detailed description thereof is omitted.

In addition, the digital control unit 16 converts the maximum value (or the minimum value) of the digital signal into a plurality of stages according to the number of bits of the digital signal, for example, a range of signal values over 2 ⁸ = 256 stages. The magnitude, for example, can be switched to 10 levels from level 0 to level 9, and the maximum value of each level is the voltage applied between the two electrode sections 12 and 13 via the amplification section 18 in the end. The absolute value of the peak is set so as to be in the range of 2V to 20V.

  When the maximum value can be switched between 10 levels from level 0 to level 9, the peak of the applied voltage corresponding to the maximum value of the digital signal at level 0 is 2 V, and the digital signal is increased every time the level number increases. The peak value of the applied voltage corresponding to the local maximum value also increases, and the peak of the applied voltage corresponding to the local maximum value of the digital signal of level 9 becomes 20 V (see FIG. 4). In accordance with the setting of the maximum value, the amount of increase or decrease of the digital signal value at regular intervals is also increased or decreased, and the applied voltage waveform does not change even if the maximum value of the digital signal is increased or decreased. Thus, the state of monotonically increasing linearly and monotonically decreasing from the peak is maintained.

In addition, the digital control unit 16 uses the range of signal values of 2 ⁿ stages of the digital signal of n bits (n is a natural number) as the muscle stimulation mode, for example, 2 ⁸ = 256 in the case of 8 bits. The digital signal value is shifted from 0 to a predetermined value without taking an intermediate value within the range of the signal value over the steps, and the state of taking the predetermined value is continued for a predetermined time, and further from the predetermined value to 0. A series of changes to be transferred without taking an intermediate value is set to be repeated a plurality of times at a constant or changing period, and such a digital signal is output.

  The analog signal waveform obtained by D / A conversion of this digital signal is steep from 0 to a predetermined maximum value for the analog signal obtained by D / A conversion of the digital signal by the D / A converter 17. After a predetermined time continues, the maximum value transitions from a maximum value to 0 with a steep falling edge, and a rectangular wave that repeats 0 and a state having the maximum value alternately is obtained.

  In this muscle stimulation mode, with energization that generates a rectangular wave voltage change between the electrode portions 12 and 13 through the skin 50, the muscle under the skin is caused to move with the energization stimulation, It is a mechanism that gives a massage effect to muscles. The technique itself for obtaining a massage effect by moving the muscles under the skin by this energization is well known, and detailed description thereof is omitted.

  The D / A converter 17 is a known one that performs digital-analog conversion on a digital signal and outputs the analog signal having a continuous waveform change in voltage, and will not be described in detail. As a conversion circuit system of the D / A conversion unit 17, a known resistance ladder type or delta-sigma can be used as long as a predetermined continuous voltage change corresponding to the digital signal output from the digital control unit 16 can be obtained. Any method such as a mold may be used.

  The digital control unit 16 and the D / A conversion unit 17 in the control unit 15 are computers having a CPU, a memory, an input / output interface, etc. as hardware configurations. Is operated as each control means. The computer constituting the digital control unit 16 and the D / A conversion unit 17 is usually mounted as a microcomputer integrally formed with a CPU, a memory, a ROM, and the like.

  The amplifying unit 18 is a voltage in which the voltage of the analog signal output from the D / A converting unit 17 is such that the absolute value of the peak of the voltage applied between the two electrode units 12 and 13 is in the range of 2V to 20V. This is an amplifier circuit that amplifies until amplitude is obtained, and the amplifier circuit itself is a known one, and detailed description thereof is omitted.

  Thus, when the applied voltage waveform is obtained based on the analog waveform obtained by D / A converting the change in the digital signal value in the digital control unit 16 by the D / A conversion unit 17, the waveform is generated only by the analog circuit. Complex waveform generation with a simpler circuit configuration, for example, the waveform for electroporation and the waveform for muscle stimulation can be generated, and the amplitude of the waveform, that is, the magnitude of the applied voltage can be adjusted appropriately As a result, the circuit scale can be greatly reduced, and the compactness and cost can be reduced as compared with the case where the same function is realized only by the analog circuit.

  On the other hand, in the case of the control unit 15, in response to a user input operation, in addition to the power switch 15b for switching the power ON / OFF, mode switching for switching the type of the energization operation between the electrode units 12 and 13 is performed. A switch 15c, a strength changeover switch 15d for switching the strength of the energization operation, a start / interrupt switch 15e for instructing start or interruption of the energization operation, and the like are provided.

  Next, the energization operation state of the beauty device according to the present embodiment will be described. As a premise, it is assumed that the beauty device 1 is activated by the user operating the power switch 15b, and the user is in a state where the user holds the grip portion 11a and is directed to a predetermined part of the face where the electrode unit 12 is desired to be used.

  First, when the user operates the mode changeover switch 15c on the control unit 15 side to select the electroporation mode, the control unit 15 enters a control state in which a voltage waveform corresponding to the electroporation mode can be applied. When the user operates the strength changeover switch 15d to select the strength of electroporation, the digital control unit 16 of the control unit 15 sets the maximum value of the digital signal to one of level 0 to level 9. Thus, the absolute value of the peak of the voltage applied between the two electrode parts 12 and 13 is set to any one of 10 predetermined values corresponding to the level in the range of 2V to 20V.

  Thereafter, when the user operates the start / interrupt switch 15e to instruct energization in a state where the electrodes 12 and 13 are in close contact with the skin 50, the controller 15 applies voltage between the electrodes 12 and 13. It shifts to the state to perform, and electricity supply via skin starts between electrode parts 12 and 13 used as a circuit closed via skin.

  In this case, the digital control unit 16 of the control unit 15 gradually increases the value of the digital signal by an increase amount according to the level from the reference value 0 to the maximum value of the set level, Further, a series of changes that are gradually reduced by a reduction amount corresponding to the level from the maximum value to 0, and a predetermined time required for the series of changes is preferably a length in a range of 0.26 ms to 0.4 ms. Is 0.33 ms, and is repeated a plurality of times with a short period (about 0.33 ms) with a fixed period, for example, a period where the repetition frequency becomes a predetermined value of about 1.2 kHz to 1.5 kHz. Output a digital signal.

  Further, the D / A converter 17 D / A converts the digital signal output from the digital controller 16 to convert an analog signal having a voltage change waveform that becomes a triangular wave that is repeated by an isosceles triangular wave. Output. The amplifying unit 18 amplifies the analog signal so that a voltage reaching a peak value corresponding to the set level can be applied between the two electrode units 12 and 13.

  In the energization execution state in which the electrodes 12 and 13 apply a voltage that forms a triangular waveform change between the electrodes 12 and 13 (see FIGS. 3 and 5), a minute amount is applied to the energized skin around the electrodes by electroporation. As a result, a non-ionic active ingredient (for example, collagen, hyaluronic acid, etc.) in the skin lotion is percutaneously introduced into the skin through the pores formed in the skin.

  Of the skin 50 of the face to be used, with respect to the concave portions such as the boundary between the nose and cheeks, the electrode portions 12 and 13 are replaced with smaller ones (those having a larger curvature of the curved surface). By using (see FIG. 1), the electrode parts 12 and 13 can be reliably brought into contact with the skin 50 of the facial recess, and the electroporation can proceed without bias to introduce the active ingredient into the skin. Can do.

  The electroporation mode energization is repeated a plurality of times at a fixed period of the repetition frequency while the electrode portions 12 and 13 are in close contact with the skin 50, and this repetition state is further repeated for a continuous rest period (for example, It will be repeated in succession with an interposition of about 10 ms (see FIG. 5).

  When the electrode portions 12 and 13 are moved little by little on the skin while being in contact with the skin 50, the target position for the percutaneous introduction of the active ingredient can be changed in the energized state. In order to interrupt this operation, when the user operates the start / interrupt switch 15e to instruct interruption of energization, the control unit 15 temporarily stops the state in which voltage is applied between the electrode units 12 and 13. After changing the position of the skin 50 with which the electrode portions 12 and 13 are brought into contact, when the user operates the start / interrupt switch 15e to instruct the start of energization, the skin 50 is interposed between the electrode portions 12 and 13 again. The energization is resumed in the same manner as described above, and electroporation proceeds.

When a predetermined time has elapsed since the start of energization, the control unit 15 stops the voltage application between the electrode units 12 and 13, and the percutaneous introduction of the active ingredient in the electroporation mode is completed. Thereafter, the user switches the operation mode to another with the mode switch 15c or turns off the power switch 15b.
After completion of the electroporation mode, the electrode unit 12 may be cleaned as necessary.

  Next, a case where the user operates the mode changeover switch 15c and selects the muscle stimulation mode will be described. Prior to executing the muscle stimulation mode, the user is allowed to apply a latex or cream to the skin as necessary.

When the user operates the mode switch 15c to select the muscle stimulation mode, the control unit 15 enters a control state in which a voltage waveform corresponding to the muscle stimulation mode can be applied. When the user operates the strength changeover switch 15d to select the intensity of the stimulus, the digital control unit 16 of the control unit 15 has a signal value range of 2 ⁿ stages of the digital signal, for example, 8 bits. In this case, the predetermined value that is not 0 of the digital signal is set to any one of 10 levels from level 0 to level 9 in the range of the signal value over 2 ⁸ = 256 levels, and between the two electrode portions 12 and 13 The absolute value of the continuous maximum value of the applied voltage is set to any one of 10 predetermined values corresponding to the level in the range of 2V to 20V.

  Thereafter, when the user operates the start / interrupt switch 15e to instruct energization in a state where the electrodes 12 and 13 are in close contact with the skin 50, the controller 15 applies voltage between the electrodes 12 and 13. It shifts to the state to perform, and electricity supply via skin starts between electrode parts 12 and 13 used as a circuit closed via skin.

  In this case, the digital control unit 16 of the control unit 15 shifts the value of the digital signal from the predetermined reference value to the predetermined value of the set level, and after continuing the state of taking the predetermined value for a predetermined time, A series of changes to be shifted from a predetermined value to the reference value is performed with a short period (about 0.33 ms) in a constant cycle, for example, a cycle in which a repetition frequency becomes a predetermined value of about 1.2 kHz to 1.5 kHz. Repeat a plurality of times to output a digital signal.

  The D / A conversion unit 17 D / A converts the digital signal output from the digital control unit 16 and has a voltage change waveform that becomes a rectangular wave having a voltage value of 0 or a maximum value. Output analog signals. The amplification unit 18 amplifies the analog signal so that a voltage reaching a maximum value corresponding to the set level can be applied between the two electrode units 12 and 13.

  In the energization execution state in which the electrodes 12 and 13 apply a voltage that changes the waveform of a rectangular waveform between the electrodes, the stimulation is applied to the muscles under the energized skin around the electrodes, and the muscles undergo waveform changes. In addition to activating the muscles to provide a massage effect, the skin is tensioned and lifted to provide a lifting effect.

  Also in this muscle stimulation mode, the energization is repeated a plurality of times at a constant cycle of the repetition frequency while the electrode portions 12 and 13 are in close contact with the skin 50, and this repeated state is further repeated for a continuous rest period (for example, It will be repeated sequentially with about 10 ms).

  When the electrode parts 12 and 13 are moved little by little on the skin while being in contact with the skin 50, the target position for energization can be changed. In order to interrupt this operation, when the user operates the start / interrupt switch 15e to instruct interruption of energization, the control unit 15 temporarily stops the state in which voltage is applied between the electrode units 12 and 13. After changing the position of the skin 50 with which the electrode portions 12 and 13 are brought into contact, when the user operates the start / interrupt switch 15e to instruct the start of energization, the skin 50 is interposed between the electrode portions 12 and 13 again. The energization that has been performed is resumed in the same manner as described above, and a state of stimulating the muscle with the energization is obtained.

  When a predetermined time has elapsed since the start of energization, the control unit 15 stops the voltage application between the electrode units 12 and 13, and the energization stimulation in this muscle stimulation mode is completed. Thereafter, the user switches the operation mode to another with the mode switch 15c or turns off the power switch 15b.

  As described above, the beauty apparatus according to the present embodiment periodically applies a series of monotonous changes from 0 to the maximum value and further from the maximum value to 0 when the electroporation is applied to the skin 50. When a voltage 50 is applied to the skin, which is obtained by D / A conversion and repeats a substantially triangular convex shape, and is applied to the skin, the pain is small compared to other waveforms, but the substance skin. Based on the fact that the present applicant has found an event with excellent penetration into the skin, when the voltage is applied to the skin 50 related to electroporation, the digital control unit 16 increases or decreases the value of the digital signal. Is adjusted so as to be substantially constant, and the voltage change of the analog signal waveform obtained by D / A conversion is output from the electrode portions 12 and 13, so that the skin 50 has a substantially triangular shape. Electroporation will occur due to the application of voltage in the return waveform, suppressing stimulation that is felt as pain during energization, and appropriately perforating the skin 50 by electroporation, so that the active ingredient to be introduced into the skin 50 is reduced. It can be surely introduced through the skin and gives a great cosmetic effect.

  In the beauty device according to the embodiment, the digital control unit 16 of the control unit 15 sets the reference value in the output of the digital signal to 0, and the digital signal value is a predetermined maximum value from the value of 0 as the reference value. It is configured to output such digital signals by repeating a series of changes that gradually increase until reaching the maximum value and further decrease gradually from the maximum value to 0. However, the present invention is not limited to this. A series of changes in which the unit sets the reference value to a non-zero value, gradually decreases the value of the digital signal from the reference value to a predetermined minimum value, and further increases gradually from the minimum value to the reference value, The analog signal obtained by D / A conversion of the digital signal by the D / A conversion unit is set so that the digital signal is output a plurality of times at a constant cycle and the digital signal is output. Can be configured to reverse the polarity of the electrode part for applying a voltage to the skin, in accordance with the structure and state of the electrode part and the digital signal from the digital control part. The output state can be set as appropriate.

  In the beauty device according to the embodiment, the digital control unit 16 gradually increases or decreases the value of the digital signal from the reference value 0 to a predetermined maximum value or minimum value, and further, the maximum value or minimum value. It is configured to output a digital signal with a setting in which a series of changes decreasing or increasing from 0 to 0 is repeated at a predetermined constant cycle with a repetition frequency of 1.2 kHz to 1.5 kHz. In addition to the above, the digital control unit is configured to adjust the cycle of the voltage waveform applied at the electrode unit by changing the repetition cycle of a series of changes in the signal value and undergoing processing in the D / A conversion unit and the amplification unit. In addition, after processing in the D / A conversion unit and the amplification unit, the voltage is applied per unit time as a triangular wave of the voltage applied to the electrode unit as an electroporation mode. The degree of electroporation effect on the skin can be adjusted by increasing the frequency of pauses and increasing the frequency of pauses, or increasing the frequency of triangular waves as shown in FIG. .

  Further, in the beauty device according to the embodiment, the electrode portions 12 and 13 are projected from the end portion of the main body portion 11 and the curved surface portion at the tip thereof is brought into contact with the skin. As shown in FIG. 4, the electrode portions 12a and 13a may be arranged at the end of the body portion 11 so as to be in contact with the skin, and each electrode portion is brought into contact with a wide area of the skin. In this state, it can be energized as it is, which is convenient when a cosmetic operation related to energization such as electroporation is performed on a wide part of the skin.

  In the beauty device according to the embodiment, the digital signal output from the digital control unit 16 of the control unit 15 is D / A converted by the D / A conversion unit 17 to obtain an analog signal. The analog signal is further amplified by the amplification unit so that an appropriate voltage is applied to the electrode unit. In addition to this, the D / A conversion method in the D / A conversion unit is digital. In the case of a so-called pulse width modulation type in which the digital signal output from the control unit is converted into pulse width modulation data and this conversion output is passed through a low-pass filter to obtain an analog signal waveform. A configuration in which the amplification unit is not used in the subsequent stage of the conversion unit can also be used. By increasing the voltage amplitude of the pulse width modulation output in the D / A conversion unit, the analog output amplitude after passing through the low-pass filter is sufficiently increased. It can be increased, and thus capable of performing appropriate voltage applied from the electrode portion without directly issues without amplification.

(Second embodiment of the present invention)
In the first embodiment, the digital control unit 16 of the control unit 15 gradually increases the value of the digital signal from the reference value 0 to a predetermined maximum value, and further from the maximum value to 0. In a series of gradually decreasing changes, the time from the digital signal value 0 to the maximum value is set to be the same as the time from the maximum value to 0, and the digital signal is converted to D / As a waveform of the applied voltage between the electrode parts 12 and 13 after A conversion and amplification of the obtained analog signal, a triangular wave in which the right-up part to the peak and the right-down part after the peak are symmetrical However, the present invention is not limited to this, and as a second embodiment, the time until the digital control unit 16 reaches the maximum value or the minimum value from the reference value of the value of the digital signal is set as the maximum value or Is it a local minimum? The waveform of the applied voltage at the electrode part after D / A conversion of the digital signal and amplification of the obtained analog signal is set to a time longer than the reference value, as shown in FIG. It is also possible to use a triangular wave shape in which the slope of the right-up portion is gentle and the peak position is shifted later, or a sawtooth wave shape having a falling portion from the peak as shown in FIG.

  More specifically, in the case of the sawtooth wave of FIG. 10, the digital control unit 16 determines each increment of the digital signal value from the reference value 0 to the local maximum value as a digital signal. The value of the digital signal is constant within the time from 0 to the maximum value, but is smaller than the increase in the value of the digital signal in the case of the first embodiment, so that the value of the digital signal is from 0 to the maximum value. It is set so that a time of about 0.26 ms to 0.4 ms elapses until the value reaches the value. On the other hand, the change in which the value of the digital signal decreases from the local maximum value to 0 does not take an intermediate value, but occurs in an extremely short time that is almost close to 0.

  However, the time condition of the waveform, that is, the predetermined time required for a series of changes that gradually increase the value of the digital signal from 0 to a predetermined maximum value and further decrease from the maximum value to 0, Regarding the point set by the digital control unit 16 so as to have a length in the range of 0.26 ms to 0.4 ms and to repeat the series of changes in a cycle with a repetition frequency of 1.2 kHz to 1.5 kHz. The same as in the first embodiment.

  In this way, the time required for the change from 0 to the maximum value of the digital signal is set longer than the time from the maximum value to 0, and the rate of change from the maximum value to the maximum value of the digital signal is set after the maximum value. The voltage change waveform having a substantially triangular shape repeatedly applied from the electrode portions 12 and 13 through the D / A conversion becomes a triangular wave or a sawtooth wave whose rate of increase to the peak is gentle. By suppressing the application of a large voltage from the beginning of energization for each waveform of energization, the stimulation of energization is gradually changed, and the situation of feeling pain on the skin due to energization can be suppressed.

(Third embodiment of the present invention)
In the beauty apparatus according to the first embodiment, the digital control unit 16 gradually increases the value of the digital signal from 0 to a predetermined maximum value, and then gradually from the maximum value to 0. By repeatedly performing a series of changes to be reduced at a predetermined cycle, the waveform of the voltage applied at the electrode unit as an electroporation mode after processing in the D / A conversion unit 17 and the amplification unit 18 The triangular voltage-like change of the positive voltage is repeated at a predetermined cycle. However, the present invention is not limited to this, and as a third embodiment, the digital control unit 16 sequentially changes the value of the digital signal from 0 to a predetermined value. A series of changes that gradually increase until reaching a maximum value, and further decrease gradually from the maximum value to 0, and the value of the digital signal is gradually increased from 0 to a predetermined minimum value. Another series of changes that gradually increase from the minimum value to 0 is replaced every predetermined period, and after processing in the D / A conversion unit and the amplification unit, the electroporation mode As shown in FIG. 11, the change in the waveform of the voltage applied at the electrode portion is generated such that a triangular waveform with a negative voltage is generated after a triangular waveform with a positive voltage is repeated a plurality of times at a predetermined cycle. As shown in FIGS. 12 and 13, a positive voltage triangular waveform and a negative voltage triangular waveform may be alternately repeated.

  In this case, the polarity of the voltage applied at the electrode part is switched every predetermined period, so that the bias of the charge in the skin can be canceled and polarization can be prevented, and the waveform of the applied voltage in the skin is disturbed by the influence of charging. Therefore, electroporation can be appropriately performed on the skin as a waveform in which the applied voltage waveform on the skin changes with reference to zero potential, and the transdermal introduction efficiency of the active ingredient can be further enhanced.

  In particular, based on adjustment of the value of the digital signal in the digital control unit, when the waveform of the applied voltage gives a change in which the waveform of the positive voltage and the waveform of the negative voltage are alternately repeated (see FIGS. 12 and 13), The time of the positive electrode and the time of the negative electrode of each electrode part are equalized, and the progress of electroporation in the skin around each electrode part in the energized state and the penetration of the active ingredient into the skin depends on the polarity of the electrode part There is no bias, and a uniform result can be obtained.

(Fourth embodiment of the present invention)
Further, in the beauty device according to the first embodiment, as the electroporation mode waveform, the digital control unit 16 gradually increases the value of the digital signal from 0 to a predetermined maximum value, A series of changes gradually decreasing from the maximum value to 0 is repeatedly performed at a predetermined cycle, and the voltage applied to the electrode units 12 and 13 through the processing in the D / A conversion unit 17 and the amplification unit 18 However, the present invention is not limited to this, and as a fourth embodiment, the digital control unit decreases the value of the digital signal after increasing, or The state in which a series of changes that are increased after a decrease is repeated multiple times and the state in which another series of changes in the digital signal value that is the opposite increase / decrease relationship are repeated multiple times are alternated. A state in which the waveform of the voltage applied at the electrode unit is repeatedly generated in a predetermined cycle as shown in FIG. 14 after being repeatedly generated and processed in the D / A conversion unit and the amplification unit. In addition, it is also possible to adopt a configuration in which this and a state in which the waveform change in a triangular wave shape in which the positive and negative polarities are reversed are repeated are alternately repeated.

  In this case, the basic pattern of the voltage waveform applied at the electrode part is left as it is, and the waveform change is made by reversing the positive and negative of the waveform every predetermined time, and the polarity of each electrode part in the energized state through the user's skin The polarity of the voltage applied to the electrode part is not biased to one side, and the influence of the polarity of the electrode part on the application of voltage to the skin is prevented, and the skin around each electrode is prevented. As for the progress of electroporation and the penetration of the active ingredient into the skin, uniform effects can be given without causing a bias due to the polarity of the electrodes. Furthermore, only by adjusting the digital signal value by the digital control unit, it is possible to perform complicated processing such as switching between positive and negative in the repeated change of the applied voltage waveform without using a complicated analog waveform generation circuit, and appropriate change-rich A voltage application state can be easily realized.

(Fifth embodiment of the present invention)
In the beauty device according to the first embodiment, as a waveform of the electroporation mode, the digital control unit gradually increases the value of the digital signal sequentially from 0 to a predetermined maximum value, and further, the maximum A series of changes that gradually decrease from the value to 0 are repeatedly performed at a predetermined cycle, and after processing in the D / A conversion unit and the amplification unit, the waveform of the voltage applied at the electrode unit has a peak. Although it is assumed that a constant triangular wave-like change is repeated at a predetermined cycle, the present invention is not limited to this, and as a fifth embodiment, the digital control unit repeatedly performs the series of changes in the value of the digital signal. Immediately after the energization state through the user's skin is started between the plurality of electrode portions, the maximum value or the minimum value is gradually increased or decreased from the initial value as the change is repeated. Periodically, after a certain period of time, it may be configured to bring to a predetermined constant value.

  In this case, as shown in FIG. 15, the waveform of the voltage applied at the electrode unit after the processing in the D / A conversion unit and the amplification unit is repeated in a predetermined triangular wave shape immediately after the start of the energization state. In addition, the peak gradually increases, and the voltage applied to the skin gradually increases from a small value, so that the stimulation related to energization immediately after the start of energization can be suppressed, and the energization related to beauty is efficient. Thus, it is possible to reduce the pain and uncomfortable feeling caused by energization of the user while ensuring a state where it can be executed, and improve the quality in terms of usability. Further, only by adjustment by the digital control unit, it is possible to realize an appropriate voltage application state rich in change without using a complicated analog oscillation circuit.

(Sixth embodiment of the present invention)
Further, in the beauty device according to the embodiment, as the waveform of the electroporation mode, the digital control unit 16 gradually increases the value of the digital signal sequentially from 0 to a predetermined maximum value, and further from the maximum value. A series of changes that gradually decrease until reaching 0 is repeatedly performed in a predetermined cycle, and the waveform of the voltage applied at the electrode unit through the processing in the D / A conversion unit and the amplification unit changes in a triangular waveform. , The repetition frequency is repeated at a constant cycle of any value between 1.2 kHz and 1.5 kHz. However, the present invention is not limited to this, and as a sixth embodiment, the digital control unit 16 determines the value of the digital signal. As the series of changes are repeated, immediately after the energization state through the user's skin is started between the plurality of electrode portions, the change is repeated. Gradually reduce the repetition period of the serial changes from the initial value, after a certain period of time, it may be configured to bring to a predetermined constant value.

  In this case, as shown in FIG. 16, the waveform of the voltage applied at the electrode unit through the processing in the D / A conversion unit and the amplification unit is a triangular wave repetition immediately after the start of the energization state, and The repetition cycle gradually changes, and the voltage applied to the skin changes from a large gap to a short gap gradually. It is possible to reduce the pain and discomfort associated with the energization of the user and improve the quality in terms of usability while ensuring the state in which the stimulation related to the skin can be suppressed and the energization relating to the beauty can be performed efficiently. Further, only by adjustment by the digital control unit, it is possible to realize an appropriate voltage application state rich in change without using a complicated analog oscillation circuit.

(Seventh embodiment of the present invention)
In the beauty apparatus according to the embodiment, as a waveform of the electroporation mode, the digital control unit gradually increases the value of the digital signal sequentially from 0 to a predetermined maximum value, and further from the maximum value to 0. The waveform of the voltage applied at the electrode unit through the processing in the D / A conversion unit and the amplifying unit is repeatedly performed at a predetermined cycle, and the voltage waveform applied to the electrode unit is 0.26 ms to 0.2. It is assumed that a change of triangular wave having a fixed length of any length of 4 ms is repeated at a predetermined cycle. However, the present invention is not limited to this, and as a seventh embodiment, the digital control unit performs the above-described series of digital signal values. Immediately after the energization state through the user's skin is started between the plurality of electrode portions while the change is repeatedly performed, the series of changes is required as the change is repeated. Gradually increased for a predetermined time from an initial value that, after a certain period of time, may be configured to bring to a predetermined constant value.

  In this case, as shown in FIG. 17, the waveform of the voltage applied at the electrode unit through the processing in the D / A conversion unit and the amplification unit is a triangular wave repeat immediately after the start of the energization state, and The duration of the wave gradually changes and the voltage applied to the skin is gradually increased from a small value to the continuous application time immediately after the start of energization. Stimulation related to energization can be suppressed, and a state in which energization related to beauty can be performed efficiently can be ensured, and pain and discomfort associated with energization of the user can be reduced to improve quality in terms of use. Further, only by adjustment by the digital control unit, it is possible to realize an appropriate voltage application state rich in change without using a complicated analog oscillation circuit.

  In the beauty device of the present invention, when the electroporation based on energization through the skin by the electrode portion is performed, the degree of penetration of the substance into the skin is actually measured by changing the waveform of the applied voltage in energization, and the applied voltage It was evaluated whether or not the difference in waveform would cause a difference in the degree of perception of energization as pain and the effect of percutaneous absorption.

Of the skin, the stratum corneum located at the outermost layer plays a role of a barrier against the movement of substances inside and outside in order to maintain the activity as a human living body. It also means becoming the biggest barrier. This stratum corneum is a non-electrolyte large molecule that cannot be infiltrated into the skin by electroporation, that is, a technique of generating minute pores by applying voltage, and ion introduction, which is a technique for infiltrating electrolyte components into the skin. For example, it is known that molecules such as collagen and hyaluronic acid can be made to pass through the pores inward.
For this reason, if electroporation is used in combination with a cosmetic agent or the like, the penetration of the active ingredient can be expected.

As a measurement, the cosmetic device of the present invention is applied to a skin sample (Yucatan pig dorsal skin) with a water-soluble polymer gel mixed with fluorescent dye (calcein) etc., and the energization operation is performed for 15 minutes at room temperature. When the applied voltage waveform is changed to a triangular waveform by adjusting the digital signal, the applied voltage waveform is changed to a rectangular waveform, and the applied voltage waveform is changed to a sine waveform. The skin piece is cut out from a position corresponding to the middle of both electrode parts, and further sliced to obtain an observation image with a fluorescence microscope and a transmission microscope image with a normal light source. In addition, the voltage application to the skin sample was carried out using two types of ones having a diameter of 7.5 mm and a diameter of 22 mm at the tip of the electrode part of the beauty device.
In addition, as a comparative example, the same measurement is performed for a skin sample that is not energized only by attaching the polymer gel.

  The penetration degree of the active ingredient, which is the measurement result, is expressed as the depth of arrival of the fluorescent dye in the skin sample. Each image (left: transmission microscope image, right: fluorescence microscope image) indicating this is shown as the electrode tip diameter φ7. 18 shows the case of .5 mm, and FIG. 19 shows the case of the electrode tip diameter of 22 mm, from the top in the order of triangular wave, rectangular wave, and sine wave. Note that a significant difference is obtained in each example with respect to the arrival depth of the fluorescent dye in the comparative example, and the image of the comparative example is omitted.

  From FIGS. 18 and 19, it can be seen that the fluorescent dye that appears brightly in the fluorescence microscopic image on the right side of the image penetrates the skin regardless of whether the electrodes are large or small in each example. Fluorescence is strongly observed in the order of sine waves. From the comparison of the results of each example, it can be seen that when the voltage application waveform is changed to a triangular waveform by adjusting the digital signal, the penetration promotion effect becomes stronger, and it is effective by giving an appropriate voltage application waveform by adjusting the digital signal. It turns out that the penetration promotion effect to the skin of an ingredient was acquired.

  Next, a sensory evaluation test was performed on the stimulation accompanying energization. When the cosmetic device of the present invention is applied and the energization operation in which the electrode is brought into contact with the skin on the inner side of the forearm in a plurality of users and the applied voltage waveform is changed to a triangular waveform by adjusting the digital signal, the applied voltage For each case where the waveform is a rectangular wave and the applied voltage waveform is a sine wave, the voltage is gradually increased from about 10 V, and the minimum voltage that causes discomfort such as discomfort and pain is recorded. And evaluated.

  In any user, the value of the minimum voltage at which the user feels uncomfortable is the smallest in the case of the rectangular wave, and no clear difference is observed between the sine wave and the triangular wave. That is, discomfort such as pain associated with energization is most easily felt with a rectangular wave, and the maximum voltage applicable to a person is the smallest with a rectangular wave, and can be greater with a sine wave or a triangular wave. It can be said. Also, it can be seen from this result that the strength of stimulation by the applied voltage waveform and the percutaneous absorption promoting property of the substance are poorly related.

  Thus, from each measurement result, when the skin is energized with the applied voltage waveform as a triangular wave by adjusting the digital signal using the beauty device of the present invention, the electroporation is greater than in the case of energization with other waveforms. It can be said that the waveform is suitable for electroporation because the absorption of a substance associated with the absorption into the skin is excellent and unpleasant stimuli such as pain can be suppressed.

  Thus, in the beauty device of the present invention, a series of changes in which the value of the digital signal by the digital control unit is gradually increased from 0 to a predetermined maximum value and further decreased from the maximum value to 0 is repeated. The digital signal is D / A converted into an analog signal, and a voltage having a triangular waveform based on the analog signal is applied between the electrodes to make the skin conductive, and electroporation is performed. Thus, it is clear that various active ingredients can be more surely penetrated into the skin while suppressing pain, and the cosmetic effect can be enhanced.

DESCRIPTION OF SYMBOLS 1 Beauty apparatus 11 Main body part 11a Grasping part 12, 13 Electrode part 12a, 13a Electrode part 14 Cable 15 Control part 15b Power switch 15c Mode change switch 15d Strength change switch 15e Start / interrupt switch 16 Digital control part 17 D / A conversion part 18 Amplifier 50 Skin

Claims (11)

A main body portion held by the user, and a plurality of electrode portions disposed on a part of the main body portion, the energized state through the user's skin between the plurality of electrode portions, the user's In a beauty device that moves substances to the skin using electroporation,
A digital controller that outputs preset n-bit (n is a natural number) digital signals at regular intervals;
A digital-to-analog conversion of a digital signal output from the digital control unit to obtain an analog signal having a continuous waveform change in voltage;
Applying a voltage of a waveform based on the analog signal obtained by the D / A conversion unit to the skin where the plurality of electrode units are in contact between the electrode units,
In the electroporation mode, the digital control unit gradually changes the value of the digital signal from a predetermined reference value to a predetermined maximum value or minimum value within a range of signal values over 2 ⁿ stages of the digital signal. A series of changes that are increased or decreased and further decreased or increased from the maximum value or the minimum value to the reference value are repeated a plurality of times at a constant or changing period, and
The digital control unit determines the amount of increase or decrease at each predetermined interval from the reference value of the digital signal value to the maximum value or minimum value, and the value of the digital signal from the reference value to the maximum value. Alternatively, the amount of decrease or increase of the digital signal value at each predetermined interval from the local maximum value or the local minimum value to the reference value is set to be substantially constant within the time until the local minimum value is reached. The beauty device is characterized in that the value of is substantially constant within the time from the maximum value or the minimum value to the reference value. The beauty device according to claim 1,
The digital control unit sets a time from the reference value of the value of the digital signal to the maximum value or the minimum value more than a time from the maximum value or the minimum value to the reference value. Beauty equipment. In the beauty device according to claim 1 or 2,
The digital control unit determines the maximum or minimum value of the digital signal within the range of the signal value in 2 ⁿ stages of the digital signal, and the absolute value of the peak of the applied voltage between the plurality of energized electrode units. A beauty apparatus characterized by being set so as to be switchable to a plurality of values that can take a range of 2V to 20V. The beauty device according to any one of claims 1 to 3,
The digital control unit gradually increases or decreases the value of the digital signal from the reference value to a predetermined maximum value or minimum value, and further decreases or increases the value from the maximum value or minimum value to the reference value. A beauty apparatus characterized in that a predetermined time required for a series of changes is set as a range of 0.26 ms to 0.4 ms. In the beauty device according to any one of claims 1 to 4,
The digital control unit gradually increases or decreases the value of the digital signal from the reference value to a predetermined maximum value or minimum value, and further decreases or increases the value from the maximum value or minimum value to the reference value. A beauty device characterized by causing a series of changes to be repeated at a cycle with a repetition frequency of 1.2 kHz to 1.5 kHz. The beauty device according to any one of claims 1 to 5,
The digital control unit shifts the value of the digital signal from the reference value to a predetermined value within a range of signal values over 2 ⁿ stages of the digital signal as a muscle stimulation mode, and takes the predetermined value. A beauty device characterized in that, after a predetermined time has elapsed, a series of changes from the predetermined value to the reference value is repeated a plurality of times at a constant or changing period. The beauty device according to any one of claims 1 to 6,
A series of changes in which the digital control unit gradually increases the value of the digital signal from the reference value to a predetermined maximum value, and further decreases gradually from the maximum value to the reference value; A series of changes in which a value is gradually decreased from the reference value to a predetermined minimum value and further increased from the minimum value to the reference value is replaced at predetermined intervals. Beauty equipment. The beauty device according to any one of claims 1 to 7,
The digital control unit gradually increases or decreases the value of the digital signal from the reference value to a predetermined maximum value or minimum value, and further decreases or increases the value from the maximum value or minimum value to the reference value. After a series of changes are repeated a plurality of times at a constant or changing period, the value of the digital signal is gradually decreased or increased from the reference value to a predetermined minimum value or maximum value, and further, the minimum value or A series of changes that increase or decrease from a local maximum value to the reference value is repeatedly performed a plurality of times in the cycle, and further, a state in which the former series of changes are repeated a plurality of times in the cycle, and A beauty device characterized in that the latter series of changes are repeated alternately in the cycle. The beauty device according to any one of claims 1 to 8,
While the digital control unit repeatedly performs the series of changes in the value of the digital signal, the change is repeated immediately after the energization state through the user's skin is started between the plurality of electrode units. The maximum value or the minimum value is gradually increased or decreased from the initial value according to the above, and a predetermined steady value is reached after a predetermined time has elapsed. The beauty device according to any one of claims 1 to 9,
While the digital control unit repeatedly performs the series of changes in the value of the digital signal, immediately after the energization state through the user's skin is started between the plurality of electrode units, the series of changes is performed. The beauty device is characterized in that the repetition cycle of the series of changes is gradually reduced from the initial value as the value is repeated, and reaches a predetermined steady value after a predetermined time has elapsed. The beauty device according to any one of claims 1 to 10,
While the digital control unit repeatedly performs the series of changes in the value of the digital signal, the change is repeated immediately after the energization state through the user's skin is started between the plurality of electrode units. Accordingly, the predetermined time required for the series of changes is gradually increased from the initial value, and after a predetermined time elapses, the beauty apparatus is reached.