CN117503323A - Radio frequency device for regulating and controlling temperature in skin - Google Patents
Radio frequency device for regulating and controlling temperature in skin Download PDFInfo
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- CN117503323A CN117503323A CN202311714028.7A CN202311714028A CN117503323A CN 117503323 A CN117503323 A CN 117503323A CN 202311714028 A CN202311714028 A CN 202311714028A CN 117503323 A CN117503323 A CN 117503323A
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- 230000001105 regulatory effect Effects 0.000 title claims abstract description 57
- 230000001276 controlling effect Effects 0.000 title claims abstract description 20
- 230000005284 excitation Effects 0.000 claims abstract description 106
- 230000000737 periodic effect Effects 0.000 claims description 3
- 210000003491 skin Anatomy 0.000 abstract description 100
- 210000001519 tissue Anatomy 0.000 abstract description 12
- 206010067484 Adverse reaction Diseases 0.000 abstract description 5
- 230000006838 adverse reaction Effects 0.000 abstract description 5
- 230000035515 penetration Effects 0.000 abstract description 5
- 210000002615 epidermis Anatomy 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 37
- 238000004088 simulation Methods 0.000 description 34
- 238000013461 design Methods 0.000 description 16
- 230000003796 beauty Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 230000001965 increasing effect Effects 0.000 description 4
- 102000008186 Collagen Human genes 0.000 description 3
- 108010035532 Collagen Proteins 0.000 description 3
- 229920001436 collagen Polymers 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 210000003205 muscle Anatomy 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 102000016942 Elastin Human genes 0.000 description 1
- 108010014258 Elastin Proteins 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000037369 collagen remodeling Effects 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 230000036425 denaturation Effects 0.000 description 1
- 238000004925 denaturation Methods 0.000 description 1
- 210000004207 dermis Anatomy 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229920002549 elastin Polymers 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 231100000075 skin burn Toxicity 0.000 description 1
- 230000037394 skin elasticity Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000029663 wound healing Effects 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00315—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
- A61B2018/00452—Skin
- A61B2018/0047—Upper parts of the skin, e.g. skin peeling or treatment of wrinkles
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00636—Sensing and controlling the application of energy
- A61B2018/00696—Controlled or regulated parameters
- A61B2018/00726—Duty cycle
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00636—Sensing and controlling the application of energy
- A61B2018/00696—Controlled or regulated parameters
- A61B2018/00732—Frequency
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- Engineering & Computer Science (AREA)
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- Biomedical Technology (AREA)
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- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
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- Physics & Mathematics (AREA)
- Heart & Thoracic Surgery (AREA)
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Abstract
The invention provides a radio frequency device for regulating and controlling the temperature in skin, which comprises: a radio frequency electrode for being brought close to skin tissue by radio frequency gel and emitting radio frequency energy for adjusting skin temperature to the skin; the radio frequency excitation signal controller is used for providing radio frequency excitation signals for the radio frequency electrodes, the radio frequency excitation signals control the radio frequency electrodes to emit corresponding radio frequency energy, the radio frequency excitation signals are pulse signals, and the radio frequency excitation signals comprise: the sine wave signal, the square wave signal or the combination of the sine wave signal and the square wave signal is used for regulating and controlling the radio frequency excitation signal by regulating the duty ratio, the frequency and the amplitude of the sine wave signal or the square wave signal. According to the invention, the radio frequency excitation signals of different characteristic signals are controlled, and the duty ratio, the frequency and the amplitude of the radio frequency excitation signals are regulated, so that the depth of penetration of radio frequency energy into skin is changed, the temperature of deep skin is regulated, and the adverse reaction of burn caused by the concentration of the temperature on the epidermis is prevented.
Description
Technical Field
The invention relates to the technical field of skin care instruments, in particular to a radio frequency device for regulating and controlling the temperature in skin.
Background
People always have beauty, and especially in recent years, along with economic development and improvement of life quality, people have a strong pursuit of improving skin elasticity and keeping skin younger. Radio frequency beauty instruments have been developed for over twenty years, and radio frequency beauty technology is relatively mature, so that the treatment effect is obvious, and the radio frequency beauty instruments are one of important choices of people for beauty treatment.
The radio frequency is used as a technical means for realizing skin remodeling in a non-invasive way, and has the technical advantages of short treatment recovery period, small side effect and safe and controllable energy. When radio frequency current flows through skin tissue, an oscillating current is generated, charged particles or charges between radio frequency electrodes are driven to generate back and forth sharp vibration along the direction of electric lines of force, and heat energy generated by mutual friction between particles acts on the skin tissue of target tissue as biological impedance to generate a thermal effect, so that initial denaturation and shrinkage of collagen are promoted, and as time goes by, collagen remodeling occurs through a controlled wound healing reaction and related new collagen formation and ends with skin more tightening.
The existing radio frequency beauty instrument is generally designed with the shape of the radio frequency electrode from the beautiful angle of the product and is used for carrying out radio frequency electrode arrangement, the penetration capability of the radio frequency electrode for transmitting radio frequency energy into tissues is limited, the radio frequency energy on the surface of the skin is easily concentrated, and adverse reactions of skin burn caused by overhigh temperature of the epidermis of a human body occur.
Disclosure of Invention
The invention aims to provide a radio frequency device for regulating and controlling the temperature in skin, which can increase the penetration depth of radio frequency energy into skin, regulate the temperature of skin in depth and prevent adverse reaction of burn caused by concentration of temperature on the skin.
In order to achieve the above object, the present invention provides a radio frequency device for regulating and controlling temperature in skin, comprising:
the radio frequency electrode head shell is provided with a groove;
a radio frequency electrode for being brought close to skin tissue by radio frequency gel and emitting radio frequency energy for adjusting skin temperature to the skin, the radio frequency electrode being disposed in the recess;
the radio frequency excitation signal controller is used for providing a radio frequency excitation signal for the radio frequency electrode, the radio frequency excitation signal controls the radio frequency electrode to emit corresponding radio frequency energy, the radio frequency excitation signal is a pulse signal, and the radio frequency excitation signal comprises: a sine wave signal, a square wave signal or a combination of a sine wave and a square wave signal, wherein the radio frequency excitation signal is regulated and controlled by regulating the duty ratio, the frequency and the amplitude of the sine wave signal or the square wave signal;
a power supply for providing a voltage to the radio frequency excitation signal controller;
the first driving circuit is respectively connected with the power supply and the radio frequency excitation signal controller, and modulates the output voltage of the power supply to form a signal required by the radio frequency excitation signal controller;
the second driving circuit comprises a plurality of input ends and output ends, the input ends are respectively connected with the output ends of the radio frequency excitation signal controller, the output ends are respectively connected with the radio frequency electrodes, and the second driving circuit transmits the radio frequency excitation signals to the radio frequency electrodes.
Optionally, in the radio frequency device for regulating and controlling the temperature in the skin, the radio frequency electrodes are a plurality of and the radio frequency electrodes are arranged in parallel.
Optionally, in the radio frequency device for regulating and controlling the temperature in the skin, the shape of the plurality of radio frequency electrodes is a strip shape.
Optionally, in the radio frequency device for regulating and controlling the temperature in the skin, the shape of the radio frequency electrode is a straight slot shape or a rectangle shape.
Optionally, in the radio frequency device for regulating temperature in skin, a ratio of a distance between axes of adjacent radio frequency electrodes to a width of the radio frequency electrodes is: 1.2 to 5.
Optionally, in the radio frequency device for regulating temperature in skin, a plurality of the radio frequency electrodes exhibit positive electrodes or negative electrodes, and the positive electrodes and the negative electrodes are alternately formed.
Optionally, in the radio frequency device for regulating and controlling the temperature in skin, the width of the radio frequency electrode is 1 mm-4 mm, and the length of the radio frequency electrode is 3 mm-60 mm.
Optionally, in the radio frequency device for regulating and controlling the temperature in skin, the second driving circuit controls the radio frequency electrode to be a positive electrode or a negative electrode by using the radio frequency excitation signal.
Optionally, in the radio frequency device for regulating temperature in skin, each of the radio frequency electrodes is alternately presented as a positive electrode and a negative electrode.
Optionally, in the radio frequency device for regulating and controlling the temperature in the skin, two adjacent radio frequency electrodes are respectively a positive electrode and a negative electrode.
Optionally, in the radio frequency device for regulating temperature in skin, the radio frequency excitation signal includes at least one periodic pulse signal.
Optionally, in the radio frequency device for regulating temperature in skin, the pulse signal of a single period is composed of at least one sine wave signal or at least one square wave signal.
Optionally, in the radio frequency device for regulating temperature in skin, the expression of the sine wave signal is as follows:
wherein V (T) is the pulse signal voltage, A1-An are the amplitude of the pulse signal, f 1-fn are the frequency of the pulse signal, D1-Dn are the duty cycle of the pulse signal, T is the period of the pulse signal, θ is the phase angle of the pulse signal, n is the number of the pulse signals, and T is the time.
Optionally, in the radio frequency device for regulating temperature in skin, the square wave signal has the following expression:
wherein V (T) is the pulse signal voltage, A1-An are the amplitude of the pulse signal, f 1-fn are the frequency of the pulse signal, D1-Dn are the duty cycle of the pulse signal, T is the period of the pulse signal, θ is the phase angle of the pulse signal, n is the number of the pulse signals, and T is the time.
Optionally, in the radio frequency device for regulating and controlling the temperature in skin, the amplitude of the pulse signal is 0V-40V, the frequency of the pulse signal is 1 MHz-5 MHz, the duty ratio of the pulse signal is 5% -90%, the period of the pulse signal is 15 ms-30 ms, and the phase angle of the pulse signal is 0 ° -180 °.
Optionally, in the radio frequency device for regulating and controlling the temperature in the skin, the conductivity of the radio frequency gel is 0.15S/m-0.35S/m.
In the radio frequency device for regulating and controlling the temperature in the skin provided by the invention, the radio frequency device comprises: the radio frequency electrode head shell is provided with a groove; a radio frequency electrode for being close to skin tissue through radio frequency gel and emitting radio frequency energy for adjusting skin temperature to the skin, the radio frequency electrode being disposed in the recess; the radio frequency excitation signal controller is used for providing radio frequency excitation signals for the radio frequency electrodes, the radio frequency excitation signals control the radio frequency electrodes to emit corresponding radio frequency energy, the radio frequency excitation signals are pulse signals, and the radio frequency excitation signals comprise: a sine wave signal, a square wave signal or a combination of a sine wave and a square wave signal, wherein the radio frequency excitation signal is regulated and controlled by regulating the duty ratio, the frequency and the amplitude of the sine wave signal or the square wave signal; a power supply for providing a voltage to the radio frequency excitation signal controller; the first driving circuit is respectively connected with the power supply and the radio frequency excitation signal controller and modulates the output voltage of the power supply to form signals required by the radio frequency excitation signal controller; the second driving circuit comprises a plurality of input ends and output ends, the input ends are respectively connected with the output ends of the radio frequency excitation signal controller, the output ends are respectively connected with the radio frequency electrodes, and the second driving circuit transmits radio frequency excitation signals to the radio frequency electrodes. The invention can control the radio frequency excitation signals of different characteristic signals, and can regulate and control the duty ratio, frequency and amplitude of the radio frequency excitation signals, thereby changing the depth of penetration of radio frequency energy into skin, further regulating the temperature of skin in depth and preventing adverse reaction caused by burn when the temperature is concentrated on the skin.
Furthermore, the arrangement mode of the radio frequency electrode further improves the utilization rate of the radio frequency electrode head shell and improves the uniformity of skin temperature.
Drawings
FIG. 1 is a schematic diagram of a RF device for controlling temperature in skin according to the present invention;
FIG. 2 is a schematic diagram of an excitation signal with a single pulse signal period including a sine wave signal according to a second embodiment of the present invention;
FIG. 3 is a schematic diagram of an excitation signal with a single pulse signal period including two sine wave signals according to a third embodiment of the present invention;
FIG. 4 is a schematic diagram of an excitation signal in which a single pulse signal period includes two sine wave signals and the two sine wave signals alternately operate in accordance with a fourth embodiment of the present invention;
FIG. 5 is a schematic diagram of an excitation signal with a single pulse signal period comprising a square wave signal according to a fifth embodiment of the present invention;
FIG. 6 is a schematic diagram of an excitation signal with a single pulse signal period including two square wave signals according to the sixth embodiment of the present invention;
FIG. 7 is a schematic diagram of a single pulse signal cycle comprising two square wave signals and two square wave signals alternately operating according to a seventh embodiment of the present invention;
FIG. 8 is a schematic diagram of a COMSOL simulation model according to a second embodiment to a seventh embodiment of the present invention;
fig. 9 is a schematic layout diagram of a radio frequency electrode according to an eighth embodiment of the present invention;
fig. 10 is a schematic layout diagram of a radio frequency electrode according to a ninth embodiment of the present invention;
FIG. 11 is a schematic diagram of a COMSOL simulation result according to a second embodiment of the present invention;
FIG. 12 is a schematic diagram of COMSOL simulation results for a third embodiment of the present invention;
FIG. 13 is a schematic diagram of COMSOL simulation results of a fourth embodiment of the present invention;
FIG. 14 is a schematic diagram of COMSOL simulation results of a fifth embodiment of the present invention;
FIG. 15 is a schematic diagram of COMSOL simulation results of a sixth embodiment of the present invention;
FIG. 16 is a schematic diagram of COMSOL simulation results for a seventh embodiment of the present invention;
FIG. 17 is a schematic diagram of COMSOL simulation results for embodiment eight of the present invention;
FIG. 18 is a diagram showing the results of COMSOL simulation in accordance with the ninth embodiment of the present invention;
in the figure: 1-radio frequency electrode head shell, 2-multiple radio frequency electrodes, 3-radio frequency gel, 4-skin layer, 5-fat layer, 6-muscle layer, 7-power supply, 8-radio frequency excitation signal controller, 9-first drive circuit, 10-second drive circuit.
Detailed Description
Specific embodiments of the present invention will be described in more detail below with reference to the drawings. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are in a very simplified form and are all to a non-precise scale, merely for convenience and clarity in aiding in the description of embodiments of the invention.
In the following, the terms "first," "second," and the like are used to distinguish between similar elements and are not necessarily used to describe a particular order or chronological order. It is to be understood that such terms so used are interchangeable under appropriate circumstances. Similarly, if a method described herein comprises a series of steps, and the order of the steps presented herein is not necessarily the only order in which the steps may be performed, and some of the described steps may be omitted and/or some other steps not described herein may be added to the method.
Also, it will be understood that when a layer (or film), region, pattern, or structure is referred to as being "on" a substrate, layer (or film), region, and/or pattern, it can be directly on another layer or substrate, and/or intervening layers may also be present. In addition, it will be understood that when a layer is referred to as being "under" another layer, it can be directly under the other layer and/or one or more intervening layers may also be present. In addition, references to "upper" and "lower" on the respective layers may be made based on the drawings.
Referring to fig. 1, the present invention provides a radio frequency device for controlling temperature in skin, comprising: the radio frequency electrode head comprises a radio frequency electrode head shell 1, a plurality of radio frequency electrodes 2, a power supply 7, a radio frequency excitation signal controller 8, a first driving circuit 9 and a second driving circuit 10. The radiofrequency electrode head shell 1 is provided with a groove, a plurality of radiofrequency electrodes 2 are embedded in the groove, and the radiofrequency electrodes 2 are fixed in the groove. The radio frequency electrode 2 is used to attach to skin tissue through radio frequency gel and to emit radio frequency energy to the skin for regulating the skin temperature. The rf excitation signal controller 8 is configured to provide an rf excitation signal to the rf electrode, where the rf excitation signal controls the rf electrode to emit corresponding rf energy, and the rf excitation signal is a pulse signal, and the rf excitation signal includes: sine wave signals, square wave signals or a combination of sine wave and square wave signals, wherein the radio frequency excitation signals are regulated and controlled by regulating the duty ratio, the frequency and the amplitude of the sine wave signals or the square wave signals, so that the radio frequency energy can be regulated and controlled, and the temperature of the skin can be regulated and controlled. The power supply 7 is arranged to supply a voltage to said radio frequency excitation signal controller 8. The first driving circuit 9 is connected to the power supply 7 and the rf excitation signal controller 8, respectively, and the first driving circuit 9 modulates the output voltage of the power supply 7 to form a signal required by the rf excitation signal controller 8. The second driving circuit 10 includes a plurality of input terminals and output terminals, the plurality of input terminals are respectively connected to the output terminals of the rf excitation signal controller 8, the plurality of output terminals are respectively connected to the plurality of rf electrodes 2, and the second driving circuit 10 transmits the rf excitation signal to the rf electrodes 2. The second driving circuit 10 controls the rf electrode 2 to be a positive electrode or a negative electrode.
The rf electrode 2 protrudes outwards on the side of the rf electrode head housing 1 close to the skin surface, or the rf electrode 2 is flush with the side of the rf electrode head housing 1 close to the skin surface, so that the rf electrode 2 can better contact the skin through rf gel. The radio frequency gel is smeared between the radio frequency electrode 2 and the skin contact surface, the radio frequency energy applied by the radio frequency electrode 2 enters skin tissues through the mediation of the radio frequency gel, and the radio frequency energy is generated to act on the dermis layer of the skin to stimulate the generation of collagen and elastin. The conductivity of the RF gel ranges from 0.15S/m to 0.35S/m, and may be, for example, 0.3S/m.
Preferably, the number of the plurality of radio frequency electrodes 2 is plural, the shapes of the plurality of radio frequency electrodes 2 are the same, in the embodiment of the invention, the plurality of radio frequency electrodes 2 are all in a strip shape, the plurality of radio frequency electrodes 2 are arranged in parallel, and the distances between the adjacent radio frequency electrodes 2 are equal. The rf electrode 2 may be uniformly disposed in the rf electrode head housing 1 and may also be more effective. The shape of the strip-shaped radio frequency electrode 2 is a straight slot shape or a rectangle, and the specific shape of the strip comprises the straight slot shape, the rectangle or the shape of edges or corners rounded. The width of the strip-shaped radio frequency electrode 2 is 1 mm-4 mm, and the length of the radio frequency electrode 2 is 3 mm-60 mm. The ratio of the distance of the axes of adjacent radio frequency electrodes 2 to the width of the radio frequency electrodes 2 is: 1.2 to 5. The radio frequency electrode 2 can effectively utilize the area of the radio frequency electrode head shell 1, and the arrangement mode is adopted, so that the radio frequency electrodes 2 are uniformly arranged, radio frequency energy can be uniformly distributed in skin tissues, and the situation that local skin is burnt is prevented. Effectively regulate the radio frequency energy distribution in skin tissues.
In some embodiments of the invention, the rf electrode 2 is composed of at least one positive electrode and at least one negative electrode, and one positive electrode and one negative electrode may constitute a pair of rf electrodes. Thus, there is at least one pair of RF electrodes. In other embodiments of the invention, the radiofrequency electrode may be composed of a different number of positive and negative electrodes, the number of positive electrodes may be greater or less than the number of negative electrodes. The second driving circuit controls the radio frequency electrode 2 to be a positive electrode or a negative electrode by using a radio frequency excitation signal. The radio frequency electrode 2 typically presents a positive or negative electrode at the ac voltage of the power supply 7. When the rf electrode 2 presents a positive electrode, the adjacent rf electrode 2 presents a negative electrode, and when the rf electrode 2 presents a negative electrode, the adjacent rf electrode 2 presents a positive electrode, which is the same as the excitation signal received by the rf electrode 2 that is the negative electrode. Positive and negative electrodes are alternately present. The plurality of radio frequency electrodes exhibit positive or negative electrodes, which are alternately formed, and the combination of the positive and negative electrodes forms a micro-current in the skin, thereby forming radio frequency energy, elevating the skin temperature.
Example 1
Referring to fig. 1, fig. 1 is a schematic diagram of a method for parallel arrangement of strip-shaped rf electrodes and control of excitation signals according to the present invention, in which an rf electrode head housing is denoted by 1, strip-shaped rf electrodes are denoted by 2, rf electrode lengths are denoted by L1 and L2, respectively, a length setting rf electrode width is denoted by W, an rf electrode inter-axis distance is denoted by S, a power supply is denoted by 7, an rf excitation signal controller is denoted by 8, and a driving circuit is denoted by 9. The design parameters of the radio frequency electrode 2 include the width of the radio frequency electrode 2 and the length of the radio frequency electrode 2, the length L1 of the radio frequency electrode 2 can be 9mm, the length L2 of the radio frequency electrode 2 can be 13mm, the width W of the radio frequency electrode 2 can be 1.5mm, the axial distance of the radio frequency electrode 2 can be 3.1mm, and the ratio of the axial distance of the radio frequency electrode 2 to the width of the radio frequency electrode 2 can be 2.1.
Preferably, the radio frequency excitation signal comprises at least one periodic pulse signal. The pulse signal of a single period is composed of at least one sine wave signal or at least one square wave signal.
The expression of the sine wave signal is as follows:
wherein V (T) is the pulse signal voltage, A1-An are the amplitude of the pulse signal, f 1-fn are the frequency of the pulse signal, D1-Dn are the duty cycle of the pulse signal, T is the period of the pulse signal, θ is the phase angle of the pulse signal, n is the number of the pulse signals, and T is the time. Therefore, different radio frequency excitation signals can be obtained by changing parameters such as the amplitude of the pulse signal, the frequency of the pulse signal, the duty ratio of the pulse signal, the period of the pulse signal and the like. Preferably, the amplitude A1-An of the pulse signal is in the range of 0V-40V, the frequency f 1-fn of the pulse signal is in the range of 1 MHz-5 MHz, the duty ratio D1-Dn of the pulse signal is in the range of 5% -90%, the period T of the pulse signal is in the range of 15 ms-30 ms, and the phase angle θ of the pulse signal is in the range of 0 DEG-180 deg.
The expression of the square wave signal is as follows:
wherein V (T) is the pulse signal voltage, A1-An are the amplitude of the pulse signal, f 1-fn are the frequency of the pulse signal, D1-Dn are the duty cycle of the pulse signal, T is the period of the pulse signal, θ is the phase angle of the pulse signal, n is the number of the pulse signals, and T is the time. Therefore, different radio frequency excitation signals can be obtained by changing parameters such as the amplitude of the pulse signal, the frequency of the pulse signal, the duty ratio of the pulse signal, the period of the pulse signal and the like. Preferably, the amplitude A1-An of the pulse signal of the present invention is in the range of 0V-40V, the frequency f 1-fn of the pulse signal is in the range of 1 MHz-5 MHz, the duty ratio D1-Dn of the pulse signal is in the range of 5% -90%, the period T of the pulse signal is in the range of 15 ms-30 ms, and the phase angle θ of the pulse signal is in the range of 0 DEG-180 deg.
Fig. 8 is a schematic diagram of a COMSOL simulation model of the second to seventh embodiments of the present invention, in which signal parameters of a radio frequency excitation signal may be loaded into the radio frequency device of the present invention, so as to simulate the temperature of the skin and the radio frequency electrode tip housing in contact with the skin. In fig. 8, the rf electrode tip housing is denoted by 1, the rf electrode is denoted by 2, the rf gel is denoted by 3, the skin layer is denoted by 4, the fat layer is denoted by 5, and the muscle layer is denoted by 6.
Next, the present invention will further explain the effect of the rf excitation signal by combining six different rf excitation signal embodiments with the rf device and the simulation model, where the six embodiments are respectively the second embodiment to the seventh embodiment.
Example two
As shown in fig. 2, fig. 2 is a schematic diagram of an excitation signal including a sine wave signal in a period of a single pulse signal according to a second embodiment of the present invention, in fig. 2, an amplitude of the pulse signal is denoted as A1, a duty ratio of the pulse signal is denoted as D1, frequencies of the pulse signal are denoted as f1, and the period of the pulse signal is denoted as T. When it is desired to adjust the skin temperature of the user, this can be accomplished by adjusting the design parameters of the sine wave signal. The design parameters include: amplitude A1 of the pulse signal, frequency f1 of the pulse signal, duty ratio D1 of the pulse signal, and period T of the pulse signal. For example, in the second embodiment of the present invention, the amplitude A1 of the pulse signal is 30V, the frequency f1 of the pulse signal is 2MHz, the duty ratio D1 of the pulse signal is 60%, and the period T of the pulse signal is 20ms. In the second embodiment, when the second embodiment is used in the rf device of the present invention, the simulation result obtained by using the simulation chart of fig. 8 is shown in fig. 9, and fig. 9 is a schematic diagram of the simulation result of COMSOL in the second embodiment of the present invention. It can be seen from fig. 9 that the temperature of the rf electrode head housing 1 is 37-38 deg.c, the temperature of the rf electrode 2 is 38-39 deg.c, the temperature of the rf gel 3 is 41-42 deg.c, the temperature of the skin layer 4 is 40-42 deg.c, and the temperature of the fat layer 5 is 38-40 deg.c. It can be seen that with the rf excitation signal of embodiment two, the temperature deep in the skin can be changed.
Example III
As shown in fig. 3, fig. 3 is a schematic diagram of an excitation signal in which a single pulse signal period includes two sine wave signals according to the third embodiment of the present invention. In fig. 3, the amplitudes of the two sine wave signals are denoted as A1 and A2, respectively, the duty ratios of the pulse signals are denoted as D1 and D2, the frequencies of the pulse signals are denoted as f1 and f2, respectively, and the periods of the pulse signals are denoted as T. In other embodiments of the present invention, more sine wave signals may be included, which will not be described herein.
Specifically, the design parameters of the two sine wave excitation signals in the third embodiment include the amplitude of the pulse signal, the frequency of the pulse signal, the duty ratio of the pulse signal and the period of the pulse signal, the amplitudes A1 and A2 of the pulse signal are respectively 30V and 21V, the frequencies f1 and f2 of the pulse signal are respectively 2MHz and 1MHz, the duty ratios D1 and D2 of the pulse signal are respectively 40% and 40%, and the period T of the pulse signal is 20ms. In other embodiments of the present invention, when the pulse signal of the third embodiment is loaded in the rf device of the first embodiment of the present invention, the simulation result obtained by using the simulation chart of fig. 8 is shown in fig. 10, and fig. 10 is a schematic diagram of the simulation result of COMSOL of the third embodiment of the present invention. It can be seen from fig. 10 that the temperature of the rf electrode head housing 1 is 37 to 38 ℃, the temperature of the rf electrode 2 is 38 to 39 ℃, the temperature of the rf gel 3 is 41 to 42 ℃, the temperature of the skin layer 4 is 40 to 42 ℃, and the temperature of the fat layer 5 is 38 to 40 ℃. It can be seen that with the rf excitation signal of embodiment three, the temperature deep in the skin can be changed.
Example IV
As shown in fig. 4, fig. 4 is a schematic diagram of an excitation signal in which a single pulse signal period of the fourth embodiment of the present invention includes two sine wave signals and the two sine wave signals alternately operate. In fig. 4, the amplitudes of the two sine wave signals are denoted as A1 and A2, respectively, the duty ratios of the pulse signals are denoted as D1, D2, and D3, the frequencies of the pulse signals are denoted as f1 and f2, respectively, and the periods of the pulse signals are denoted as T. In other embodiments of the present invention, more sine wave signals may be included, which will not be described herein.
The specific design may be that the design parameters include the amplitude of the pulse signal, the duty ratio of the pulse signal and the period of the pulse signal, the amplitudes A1 and A2 of the pulse signal are 30V and 21V, the frequencies f1 and f2 of the pulse signal are 2MHz and 1MHz, the duty ratios D1, D2 and D3 of the pulse signal are 40%,10% and 40%, respectively, and the period T of the pulse signal is 20ms. When the fourth embodiment of the present invention is applied to the rf device of the first embodiment of the present invention, the simulation result obtained by using the simulation chart of fig. 8 is shown in fig. 11, and fig. 11 is a schematic diagram of the simulation result of COMSOL of the fourth embodiment of the present invention. It can be seen from fig. 11 that the temperature of the rf electrode head housing 1 is 37-38 deg.c, the temperature of the rf electrode 2 is 38-39 deg.c, the temperature of the rf gel 3 is 41-42 deg.c, the temperature of the skin layer 4 is 40-42 deg.c, and the temperature of the fat layer 5 is 38-40 deg.c. It can be seen that with the rf excitation signal of embodiment four, the temperature deep in the skin can be changed.
Example five
As shown in fig. 5, fig. 5 is a schematic diagram of an excitation signal including a square wave signal in the period of a single pulse signal according to the fifth embodiment of the present invention, in fig. 5, the amplitude of the pulse signal is denoted as A1, the duty ratio of the pulse signal is denoted as D1, and the period of the pulse signal is denoted as T.
The specific design may be that the design parameters include the amplitude of the pulse signal, the duty cycle of the pulse signal and the period of the pulse signal, the amplitude A1 of the pulse signal is 20V, the duty cycle D1 of the pulse signal is 60%, and the period T of the pulse signal is 20ms. When the fifth loading of the embodiment of the present invention is used in the rf device of the first embodiment of the present invention, the simulation result obtained by using the simulation chart of fig. 8 is shown in fig. 12, and fig. 12 is a schematic diagram of the simulation result of COMSOL of the fifth embodiment of the present invention. It can be seen from fig. 12 that the temperature of the rf electrode head housing 1 is 37-38 deg.c, the temperature of the rf electrode 2 is 38-39 deg.c, the temperature of the rf gel 3 is 41-42 deg.c, the temperature of the skin layer 4 is 40-42 deg.c, and the temperature of the fat layer 5 is 38-40 deg.c. It can be seen that with the rf excitation signal of embodiment five, the temperature deep in the skin can be changed.
Example six
As shown in fig. 6, fig. 6 is a schematic diagram of an excitation signal including two square wave signals in the period of a single pulse signal according to the sixth embodiment of the present invention, in fig. 6, the amplitudes of the pulse signals are denoted as A1 and A2, the duty ratios of the pulse signals are denoted as D1 and D2, respectively, and the period of the pulse signal is denoted as T. In other embodiments of the present invention, more square wave signals may be included, which is not described herein.
The specific design may be that the design parameters include the amplitude of the pulse signal, the duty ratio of the pulse signal and the period of the pulse signal, the amplitude A1 and A2 of the pulse signal are respectively 20V and 14V, the duty ratio D1 and D2 of the pulse signal are respectively 40% and 40%, and the period T of the pulse signal is 20ms. When the sixth loading of the present embodiment is used in the rf device of the first embodiment of the present invention, the simulation result obtained by using the simulation chart of fig. 8 is shown in fig. 13, and fig. 13 is a schematic diagram of the simulation result of COMSOL of the sixth embodiment of the present invention. It can be seen from fig. 13 that the temperature of the rf electrode head housing 1 is 37-38 deg.c, the temperature of the rf electrode 2 is 37-38 deg.c, the temperature of the rf gel 3 is 41-42 deg.c, the temperature of the skin layer 4 is 40-41 deg.c, and the temperature of the fat layer 5 is 38-39 deg.c. It can be seen that with the rf excitation signal of embodiment six, the temperature deep in the skin can be changed.
Example seven
As shown in fig. 7, fig. 7 is a schematic diagram of a single pulse signal period including two square wave signals and the two square wave signals alternately operating, in fig. 7, the amplitudes of the two square wave signals are denoted as A1 and A2, the duty cycles of the pulse signals are denoted as D1, D2 and D3, respectively, and the pulse signal period is denoted as T. In other embodiments of the present invention, more square wave signals may be included, which is not described herein.
The specific design may be that the working design parameters include the amplitude of the pulse signal, the duty ratio of the pulse signal and the period of the pulse signal, the amplitude A1 and A2 of the pulse signal are respectively 20V and 14V, the duty ratios D1, D2 and D3 of the pulse signal are respectively 40%,10% and 40%, and the period T of the pulse signal is 20ms. When the seventh embodiment of the present invention is used in the rf device of the first embodiment of the present invention, the simulation result obtained by using the simulation chart of fig. 8 is shown in fig. 14, and fig. 14 is a schematic diagram of the simulation result of COMSOL of the seventh embodiment of the present invention. It can be seen from fig. 14 that the temperature of the rf electrode head housing 1 is 37 to 38 ℃, the temperature of the rf electrode 2 is 37 to 38 ℃, the temperature of the rf gel 3 is 41 to 42 ℃, the temperature of the skin layer 4 is 40 to 41 ℃, and the temperature of the fat layer 5 is 38 to 39 ℃. It can be seen that with the rf excitation signal of embodiment seven, the temperature deep in the skin can be changed.
From the simulation results corresponding to the second embodiment, the seventh embodiment and the sixth embodiment, it can be seen that the depth of the rf energy entering the skin can be adjusted by selecting signals with different shapes and designing different parameters of the signals, such as the amplitude of the pulse signal, the duty cycle of the pulse signal and the frequency of the pulse signal, so as to adjust the temperature of the skin. Further, experiments prove that the temperature of the skin can be increased by increasing one or both of the amplitude of the pulse signal and the duty ratio of the pulse signal. The frequency of the pulse signal is increased, and the temperature rising speed of the skin can be increased. While selecting the appropriate pulse period and pulse phase angle protects skin temperature.
Example eight
Referring to fig. 15, fig. 15 is a schematic layout diagram of an rf electrode according to an eighth embodiment of the invention. The eighth embodiment of the present invention is different from the first embodiment of the present invention in the arrangement of the rf electrodes 2. In fig. 15, the electrode head housing is denoted as 1, the strip-shaped radio-frequency electrode is denoted as 2, the lengths L1 and L2 of the radio-frequency electrode are 9.6mm and 14mm, respectively, the width W of the radio-frequency electrode is 2.5mm, the inter-axis distance S of the radio-frequency electrode is 3.1mm, the ratio of the axial distance of the radio-frequency electrode to the width of the radio-frequency electrode is 1.24, the single-wave excitation signal is used, the design parameters include the amplitude of the pulse signal, the duty ratio of the pulse signal and the period of the pulse signal, the amplitudes A1, A2, A3, A4 of the pulse signal are 20V, 0V, 14V and 0V, respectively, the duty ratios D1, D2, D3, D4 of the pulse signal are 40%,10%, 30% and 20%, respectively, and the period T of the pulse signal is 20ms, respectively. Finally, referring to fig. 17, fig. 17 is a schematic diagram of a COMSOL simulation result obtained by using the simulation diagram of fig. 8 according to an eighth embodiment of the present invention. It can be seen from fig. 17 that the temperature of the rf electrode head housing 1 is 40-42 ℃, the temperature of the rf electrode 2 is 42-44 ℃, the temperature of the rf gel 3 is 46-50 ℃, the temperature of the skin layer 4 is 40-46 ℃, and the temperature of the fat layer 5 is less than 42 ℃. It can be seen that the combination of the rf excitation signal and the arrangement of the rf electrodes 2 of embodiment eight can also be used to change the temperature deep in the skin.
Example nine
Referring to fig. 16, fig. 16 is a schematic layout diagram of a radio frequency electrode according to a ninth embodiment of the invention. The ninth embodiment of the present invention is different from the first embodiment of the present invention in that only the arrangement of the rf electrodes 2 is different. In fig. 16, the electrode head housing is denoted as 1, the strip-shaped radio-frequency electrode is denoted as 2, the radio-frequency electrode lengths L1 and L2 are 9mm and 13mm, respectively, the radio-frequency electrode width W is 0.4mm, the radio-frequency electrode axial distance S is 3.1mm, the ratio of the radio-frequency electrode axial distance to the radio-frequency electrode width is 7.75, the single-wave excitation signal is used, the design parameters include the amplitude of the pulse signal, the duty ratio of the pulse signal and the period of the pulse, the amplitudes A1 and A2 of the pulse signal are 20V and 0V, respectively, the duty ratios D1 and D2 of the pulse signal are respectively 70% and 30%, respectively, and the period T of the pulse is 20ms. Finally, referring to fig. 18, fig. 18 is a schematic diagram of a simulation result of COMSOL according to a ninth embodiment of the present invention. It can be seen from fig. 18 that the temperature of the rf electrode head housing 1 is 37-38 ℃, the temperature of the rf electrode 2 is 37-38 ℃, the temperature of the rf gel 3 is 39-42 ℃, the temperature of the skin layer 4 is 38-39 ℃, and the temperature of the fat layer 5 is 37-38 ℃. It can be seen that the combination of the rf excitation signal and the arrangement of the rf electrodes 2 of embodiment nine can also be used to change the temperature deep in the skin. In other embodiments of the present invention, there are also more different combinations of rf excitation signals and rf electrodes 2, which are not described in detail herein.
It should be appreciated that the various forms of design parameters shown above may be used to reorder, add, or delete designs of radio frequency electrodes. For example, the parameter values described in the present invention may be executed in parallel or not, and are not limited herein as long as the desired results of the technical solution of the present invention can be achieved. The above examples are simulation results under certain conditions, and the skin layer may also reach higher temperatures during actual use, for example, may exceed 42 ℃ and reach 44 ℃. If the user feels that the skin temperature is too high, the power of the radio frequency device or the beauty instrument can be adjusted, so that the power of the radio frequency excitation signal is adjusted to adjust the skin (including the epidermis layer, the fat layer, the muscle layer and the like). For example, the power of the RF device or the cosmetic instrument may be reduced to reduce the temperature of the skin.
In summary, in the radio frequency device for regulating and controlling the temperature in skin provided by the embodiment of the invention, the radio frequency device comprises: the radio frequency electrode head shell is provided with a groove; a radio frequency electrode for being close to skin tissue through radio frequency gel and emitting radio frequency energy for adjusting skin temperature to the skin, the radio frequency electrode being disposed in the recess; the radio frequency excitation signal controller is used for providing radio frequency excitation signals for the radio frequency electrodes, the radio frequency excitation signals control the radio frequency electrodes to emit corresponding radio frequency energy, the radio frequency excitation signals are pulse signals, and the radio frequency excitation signals comprise: a sine wave signal, a square wave signal or a combination of a sine wave and a square wave signal, wherein the radio frequency excitation signal is regulated and controlled by regulating the duty ratio, the frequency and the amplitude of the sine wave signal or the square wave signal; a power supply for providing a voltage to the radio frequency excitation signal controller; the first driving circuit is respectively connected with the power supply and the radio frequency excitation signal controller and modulates the output voltage of the power supply to form signals required by the radio frequency excitation signal controller; the second driving circuit comprises a plurality of input ends and output ends, the input ends are respectively connected with the output ends of the radio frequency excitation signal controller, the output ends are respectively connected with the radio frequency electrodes, and the second driving circuit transmits radio frequency excitation signals to the radio frequency electrodes. The invention can control the radio frequency excitation signals of different characteristic signals, and can regulate and control the duty ratio, frequency and amplitude of the radio frequency excitation signals, thereby changing the depth of penetration of radio frequency energy into skin, further regulating the temperature of skin in depth and preventing adverse reaction caused by burn when the temperature is concentrated on the skin.
Furthermore, the arrangement mode of the radio frequency electrode further improves the utilization rate of the radio frequency electrode head shell and improves the uniformity of skin temperature.
The foregoing is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any person skilled in the art will make any equivalent substitution or modification to the technical solution and technical content disclosed in the invention without departing from the scope of the technical solution of the invention, and the technical solution of the invention is not departing from the scope of the invention.
Claims (16)
1. A radio frequency device for regulating temperature within skin, comprising:
the radio frequency electrode head shell is provided with a groove;
a radio frequency electrode for being brought close to skin tissue by radio frequency gel and emitting radio frequency energy for adjusting skin temperature to the skin, the radio frequency electrode being disposed in the recess;
the radio frequency excitation signal controller is used for providing a radio frequency excitation signal for the radio frequency electrode, the radio frequency excitation signal controls the radio frequency electrode to emit corresponding radio frequency energy, the radio frequency excitation signal is a pulse signal, and the radio frequency excitation signal comprises: a sine wave signal, a square wave signal or a combination of a sine wave and a square wave signal, wherein the radio frequency excitation signal is regulated and controlled by regulating the duty ratio, the frequency and the amplitude of the sine wave signal or the square wave signal;
a power supply for providing a voltage to the radio frequency excitation signal controller;
the first driving circuit is respectively connected with the power supply and the radio frequency excitation signal controller, and modulates the output voltage of the power supply to form a signal required by the radio frequency excitation signal controller;
the second driving circuit comprises a plurality of input ends and output ends, the input ends are respectively connected with the output ends of the radio frequency excitation signal controller, the output ends are respectively connected with the radio frequency electrodes, and the second driving circuit transmits the radio frequency excitation signals to the radio frequency electrodes.
2. The radio frequency device for regulating temperature in skin according to claim 1, wherein said radio frequency electrode is a plurality of said radio frequency electrodes arranged in parallel.
3. The radio frequency device for regulating temperature in skin according to claim 2, wherein a plurality of said radio frequency electrodes are each in the shape of a bar.
4. A radio frequency device for regulating temperature in skin according to claim 3, wherein said radio frequency electrode has a shape of a straight slot or a rectangle.
5. A radio frequency device for regulating temperature in skin according to claim 3, wherein the ratio of the distance of the axis adjacent to said radio frequency electrode to the width of said radio frequency electrode is: 1.2 to 5.
6. A radio frequency device for regulating temperature in skin according to claim 3, wherein a plurality of said radio frequency electrodes exhibit positive or negative electrodes, said positive and negative electrodes being alternately formed.
7. The radio frequency device for regulating temperature in skin according to claim 1, wherein the width of the radio frequency electrode is 1mm to 4mm, and the length of the radio frequency electrode is 3mm to 60mm.
8. The radio frequency device for regulating temperature in skin according to claim 2, wherein the second driving circuit controls the radio frequency electrode to be a positive electrode or a negative electrode using the radio frequency excitation signal.
9. The radio frequency device for regulating temperature in skin according to claim 8, wherein each of said radio frequency electrodes is alternately presented as a positive electrode and a negative electrode.
10. The radio frequency device for regulating temperature in skin according to claim 9, wherein adjacent two of said radio frequency electrodes are respectively presented as a positive electrode and a negative electrode.
11. The radio frequency device for regulating temperature within skin according to claim 1, wherein the radio frequency excitation signal comprises at least one periodic pulse signal.
12. The radio frequency device for regulating temperature within skin according to claim 11, wherein said pulse signal of a single period consists of at least one sine wave signal or at least one square wave signal.
13. The radio frequency device for regulating temperature within skin according to claim 12, wherein the sine wave signal is expressed as follows:
wherein V (T) is the pulse signal voltage, A1-An are the amplitude of the pulse signal, f 1-fn are the frequency of the pulse signal, D1-Dn are the duty cycle of the pulse signal, T is the period of the pulse signal, θ is the phase angle of the pulse signal, n is the number of the pulse signals, and T is the time.
14. The radio frequency device for regulating temperature within skin according to claim 12, wherein the square wave signal is expressed as follows:
wherein V (T) is the pulse signal voltage, A1-An are the amplitude of the pulse signal, f 1-fn are the frequency of the pulse signal, D1-Dn are the duty cycle of the pulse signal, T is the period of the pulse signal, θ is the phase angle of the pulse signal, n is the number of the pulse signals, and T is the time.
15. The radio frequency device for controlling temperature in skin according to claim 12, wherein the amplitude of the pulse signal is 0V to 40V, the frequency of the pulse signal is 1MHz to 5MHz, the duty cycle of the pulse signal is 5 to 90%, the period of the pulse signal is 15ms to 30ms, and the phase angle of the pulse signal is 0 ° to 180 °.
16. The radio frequency device for regulating temperature in skin according to claim 1, wherein the radio frequency gel has a conductivity of 0.15S/m to 0.35S/m.
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