Ultrasound-assisted laser efficient and precise hair removal beauty method and device

Abstract

The present invention provides an ultrasound-assisted laser efficient and accurate hair removal beauty method and device, comprising a laser hair removal device, an ultrasonic auxiliary unit arranged at the output end of the laser, a thermistor arranged at the front end of the ultrasonic auxiliary unit, and a TEC electrically connected to the thermistor, wherein the TEC is arranged above the ultrasonic auxiliary unit. The present invention uses ultrasonic monitoring technology and an array combination arrangement, which continuously emits pulsed ultrasonic waves, then collects echo signals, confirms the hair concentration in the skin area through signal analysis, and then feeds back to the device to automatically adjust the laser power to achieve the purpose of balanced hair removal. At the same time, the ultrasonic transducer uses ultrasonic waves of corresponding frequencies to ultrasonically disperse the hair removal liquid, promote the area of ​​the liquid combined with the hair follicles, promote the effect of laser hair removal, inhibit and play an anti-inflammatory role, and avoid the phenomenon of hair follicle redness and swelling.

Description

Technical Field

[0001] The present invention relates to the technical field of medicine or veterinary medicine, and in particular to an ultrasound-assisted laser efficient and accurate hair removal beauty method and device. Background Art

[0002] Before using existing laser hair removal equipment, you need to shave the hair on the surface of the skin, then apply cold gel, and then remove the hair. The hidden danger of this method is that it cannot follow the concentration of hair for adjustable hair removal, resulting in the hair in all pores being treated equally during hair removal, and all are irradiated with maximum power, and the power cannot be automatically adjusted according to the hair concentration. Summary of the invention

[0003] The present invention aims to solve the problem that the power cannot be adjusted during the existing hair removal, and provides an ultrasound-assisted laser efficient and accurate hair removal beauty method and device using ultrasonic monitoring technology and an array combination arrangement. The arrangement method continuously emits pulsed ultrasonic waves, then collects echo signals, confirms the hair concentration in the skin area through signal analysis, and then feeds back to the device to automatically adjust the laser power to achieve the purpose of balanced hair removal.

[0004] The present invention provides an ultrasound-assisted laser efficient and accurate hair removal beauty method, comprising the following steps:

[0005] S1. Ultrasonic hair follicle detection: The ultrasonic auxiliary unit is brought into contact with the skin. The ultrasonic auxiliary unit sends a pulse signal to the skin. The pulse signal rebounds after contacting the hair follicles of the pores. Each ultrasonic auxiliary unit receives the ultrasonic echo signal and amplifies it. The characteristics are analyzed using the time difference method and the data is integrated. Finally, the direction and distance between the hair follicle and the ultrasonic auxiliary unit are obtained and then fed back to the laser hair removal device. The laser hair removal device adjusts the power to optimize hair removal.

[0006] S2. Ultrasonic atomization and dispersion: One part of the ultrasonic auxiliary unit performs atomization and spraying of liquid during hair removal, and the other part performs ultrasonic dispersion, which can reduce inflammation while removing hair to avoid redness and swelling of hair follicles. The liquid includes anti-inflammatory drugs and essence.

[0007] The ultrasound-assisted laser efficient and precise hair removal beauty method described in the present invention is, as a preferred embodiment, in step S1, the pulse signal includes a longitudinal vibration signal and a radial vibration signal, and the ultrasonic echo signal includes a longitudinal ultrasonic echo signal and a radial ultrasonic echo signal.

[0008] The ultrasound-assisted laser efficient and precise hair removal beauty method described in the present invention is, as a preferred embodiment, the specific method of the time difference method in step S1 is:

[0009] C=2l / Δt

[0010] Among them, l is the distance between the hair follicle and the ultrasonic auxiliary unit, Δt is the time difference, and C is the speed of sound waves propagating in the human body.

[0011] The ultrasonic-assisted laser efficient and precise hair removal beauty method described in the present invention is, as a preferred embodiment, in step S1, when the ultrasonic auxiliary unit applies an external voltage, the piezoelectric ceramic piece resonates and drives the resonance plate to vibrate and emit a pulse signal; when the ultrasonic auxiliary unit does not apply an external voltage, the resonance plate receives the ultrasonic echo signal and drives the piezoelectric ceramic piece to vibrate to transmit the ultrasonic echo signal.

[0012] The ultrasonic-assisted laser efficient and precise hair removal beauty method described in the present invention is preferably configured such that the matching layer acoustic impedance Z of the matching layer of the ultrasonic-assisted unit is m The calculation method of Z is: m =(Z 1 Z 2 ) 1 / 2 ,

[0013] Among them, Z 1 is the acoustic impedance of the piezoelectric ceramic, Z 2 is the acoustic impedance of human skin;

[0014] Sound intensity transmittance T I The calculation method is:

[0015] Sound intensity reflectivity R I The calculation method is:

[0016] The ultrasound-assisted laser efficient and precise hair removal beauty method described in the present invention is preferably performed while steps S1 and S2 are performed. Step S3 is performed;

[0017] S3. Temperature control: The temperature of the hair removal beauty device is monitored by the thermistor installed at the front end of the ultrasonic auxiliary unit. When the temperature is higher than the set temperature, the TEC turns on the cooling function to reduce the temperature of the hair removal beauty device. At the same time, the heat on the other side of the TEC is conducted away through the cooling water path of the laser hair removal device.

[0018] The present invention provides an ultrasound-assisted laser high-efficiency and accurate hair removal beauty device, comprising a laser hair removal device, an ultrasound-assisted unit arranged at the output end of the laser, a thermistor arranged at the front end of the ultrasound-assisted unit, and a TEC electrically connected to the thermistor, wherein the TEC is arranged above the ultrasound-assisted unit;

[0019] The ultrasonic auxiliary unit includes at least two ultrasonic transducers arranged at the laser emitting end of the laser hair removal device. The ultrasonic transducer includes a shell and a resonance plate, a piezoelectric ceramic sheet, and a matching layer arranged in the shell from top to bottom. The ultrasonic transducers are arranged in an array, and the shell includes a cooling head.

[0020] The ultrasonic-assisted laser high-efficiency and precise hair removal beauty device described in the present invention, as a preferred embodiment, the ultrasonic-assisted unit also includes an ultrasonic support arranged above the ultrasonic transducer and a steering structure connecting the ultrasonic support and the ultrasonic transducer;

[0021] The ultrasonic support comprises an ultrasonic support body arranged above the ultrasonic transducer and a guide structure arranged at the lower part of the ultrasonic support body and connected to the steering structure. The guide structure is a hollow structure, and the number of the guide structures is the same as the number of the ultrasonic transducers.

[0022] The steering structure includes a spring and a connecting spring arranged in the guide structure, and a universal ball head of the ultrasonic transducer. The front end of the universal ball head is spherical and the rear end is rod-shaped. A groove is arranged on the upper part of the ultrasonic transducer, and the front end of the universal ball head is embedded in the groove and can slide in the groove.

[0023] The ultrasound-assisted laser high-efficiency and precise hair removal beauty device described in the present invention is preferably configured such that the diameter of the piezoelectric ceramic piece is 2 mm to 50 mm;

[0024] The ratio of the diameter of the matching layer to the diameter of the piezoelectric ceramic sheet is 0.05:1 to 1:0.05, and the ratio of the thickness of the matching layer to the thickness of the piezoelectric ceramic sheet is 0.05:1 to 1:0.05.

[0025] The ultrasound-assisted laser efficient and precise hair removal beauty device described in the present invention is, as a preferred embodiment, made of a shell made of metal or organic matter with a thickness of 0.001 to 10 mm; the number of ultrasonic transducers is 8, divided into 3 columns, and the number of the first column and the third column is 3 each, and the number of the second column is 2.

[0026] The technical solution adopted by the present invention is:

[0027] The ultrasonic-assisted laser precision hair removal beauty device comprises a laser hair removal unit and an ultrasonic-assisted unit.

[0028] The laser hair removal unit is the mainstream laser on the market;

[0029] The ultrasonic auxiliary unit is composed of piezoelectric ceramic sheet, matching layer, shell and lead wire;

[0030] The size of piezoelectric ceramic sheets is 2mm to 50mm;

[0031] The ratio of the diameter of the matching layer to the diameter of the piezoelectric ceramic piece is 0.05:1 to 1:0.05;

[0032] The ratio of the thickness of the matching layer to the thickness of the piezoelectric ceramic sheet is 0.05:1 to 1:0.05;

[0033] The shell of the ultrasonic auxiliary unit is made of metal or organic material, and the thickness of the shell emission surface is 0.001 to 10 mm;

[0034] The number of ultrasonic auxiliary units is determined by the area of ​​the probe used.

[0035] An ultrasonic-assisted laser precision hair removal beauty device, the design principle of which is as follows:

[0036] 1. Each ultrasonic unit sends out a pulse signal, and the signal rebounds after contacting the hair follicles of the pores. Each ultrasonic unit receives the ultrasonic echo signal, and each ultrasonic unit analyzes the ultrasonic echo signal. By setting the corresponding frequency of the transducer, with the help of the two frequencies of longitudinal vibration and radial vibration of the transducer, after the two waves collide with the hair follicles, the longitudinal vibration carries the radial vibration wave to rebound, and the returned signal is amplified and analyzed. The data of multiple transducers is integrated to determine the direction and distance of the corresponding hair follicle position from the ultrasonic probe, so as to accurately locate the hair follicle position; the signal is fed back to the laser hair removal device, and the hair removal device will perform power optimization hair removal on the hair follicles in the corresponding areas of different densities, thereby achieving the purpose of balanced hair removal. The principle is as follows:

[0037] The ultrasonic unit is made of piezoelectric ceramics. Piezoelectric ultrasonic waves actually work by using the resonance of piezoelectric crystals. The internal structure of the ultrasonic generator has two piezoelectric chips and a resonance plate. When a pulse signal is applied to its two poles, and its frequency is equal to the natural oscillation frequency of the piezoelectric chip, the piezoelectric chip will resonate and drive the resonance plate to vibrate, thus generating ultrasonic waves. On the contrary, if no voltage is applied between the two electrodes, when the resonance plate receives ultrasonic waves, it will press the piezoelectric chip to vibrate, converting mechanical energy into electrical signals, and then it becomes an ultrasonic receiver.

[0038] After the ultrasonic wave is emitted, it will be reflected when it encounters the hair follicle. The reflected ultrasonic signal will be received by the array ultrasonic unit. After each unit of the ultrasonic array receives the signal, it is amplified by the signal amplifier. The specific position of the hair follicle relative to the probe can be calculated through the time difference method. Through regional data measurement, the density of the hair follicle, the depth of the hair follicle and other key information can be calculated. The principle of the time difference algorithm is as follows:

[0039] C=2l / Δt

[0040] Where l is the distance between the hair follicle and the ultrasonic auxiliary unit, Δt is the time difference, and C is the speed of sound waves propagating in the human body.

[0041] Figure 3This is the waveform diagram of the ultrasonic transducer of the present invention. The square wave is a pulse signal. The sine wave is divided into two parts. The front part is relatively dense, which is the longitudinal wave and the power part of the ultrasonic auxiliary unit. The sparse wave in the back part is the transverse wave and the signal part of the ultrasonic auxiliary unit. The functional part has high energy and can directly act on the epidermis. The signal part has a long transmission distance and can be used to monitor hair follicles.

[0042] 2. Use a part of the ultrasonic wave for atomization spraying liquid, and another part for ultrasonic dispersion. Ultrasonic vibration can cause the movement of substances in tissue cells. Due to the fine massage of ultrasound, the cell plasma flows, the cells oscillate, rotate, and rub, thereby producing the effect of cell massage, also known as "internal massage". This is a unique feature of ultrasonic therapy, which can change the permeability of cell membranes, stimulate the diffusion process of semi-permeable membranes of cells, promote metabolism, accelerate blood and lymphatic circulation, improve cell ischemia and hypoxia, improve tissue nutrition, change protein synthesis rate, and enhance regeneration function.

[0043] This arrangement method continuously emits pulsed ultrasonic waves, and then uses ultrasonic waves of corresponding frequencies to ultrasonically disperse the depilatory liquid, thereby promoting the area of ​​liquid and hair follicle combination and the effect of laser hair removal. At the same time, the anti-inflammatory drugs can be ultrasonically atomized and dispersed in the hair follicle area through ultrasound, so that the hair can be removed and inflammation can be eliminated at the same time. Moreover, under the action of ultrasound, the pH value of the tissue can be developed towards alkalinity, which can reduce swelling and promote blood circulation. For local swelling and pain caused by soft tissue injury or even fracture, it can promote tissue blood circulation and accelerate the disappearance and absorption of swelling. It can relieve local acidosis associated with inflammation. Ultrasound can affect blood flow, produce inflammatory effects, inhibit and play an anti-inflammatory role. It can make white blood cells move and promote angiogenesis. In this way, the damaged cell tissue can be cleaned, activated and repaired, and the phenomenon of hair follicle redness and swelling can be avoided.

[0044] 3. For the ultrasonic transducer of the ultrasonic auxiliary unit, the matching layer itself has very high requirements. Only when the sound-generating material and the matching layer impedance are perfectly connected, the transducer can show good characteristics. Especially for medical ultrasound, the impedance of the piezoelectric crystal is 35MRayl, and the human body impedance is 1.5MRayl. Without the matching layer, the transmittance of ultrasound is only about 15.6%. After adding the matching layer, the transmittance of ultrasound can rise to 60%. Adding a matching layer can greatly improve impedance matching, allowing more ultrasonic energy to be transmitted into the skin, enabling more effective treatment.

[0045] The ultrasonic auxiliary unit uses a 1 / 4 wavelength single matching layer for matching. The function of the matching layer is to buffer the acoustic impedance gradient between the piezoelectric ceramic and the transmission medium, thereby improving the energy transmittance. The design of the acoustic impedance matching layer needs to meet a specific acoustic impedance and a specific thickness, i.e., 1 / 4 wavelength. The characteristic acoustic impedance value of the 1 / 4 wavelength matching layer is as follows:

[0046] Z m =(Z 1 Z 2 ) 1 / 2

[0047] Where Z m is the acoustic impedance of the matching layer, Z 1 is the acoustic impedance of PZT, Z 2 is the acoustic impedance of human skin.

[0048] The acoustic intensity transmittance and reflectance are calculated as follows:

[0049] Sound intensity transmittance and reflectivity:

[0050]

[0051]

[0052] Where T I is the sound intensity transmittance, R I is the sound intensity reflectivity, Z 1 is the impedance of medium 1, Z 2 is the impedance of medium 2.

[0053] 4. Unique design of ultrasonic auxiliary unit: Due to the frequency shift phenomenon of PZT itself as the temperature changes, the temperature change has a great impact on the ultrasonic signal. This structure contains TEC, which can control the temperature of the ultrasonic unit and realize the constant temperature operation of the ultrasonic unit. In addition, the low temperature of the probe of the ultrasonic assisted laser hair removal beauty device is conducive to reducing the tingling sensation of the skin during hair removal.

[0054] TEC uses the Peltier effect and is based on a semiconductor material. By applying a low DC voltage to both ends, heat will flow from one end of the element to the other. At this time, the temperature of one end of the refrigerator will drop, while the temperature of the other end will rise at the same time. A thermistor is installed at the front end of the device to monitor the temperature of the device. When the temperature of the device is higher than the set temperature, TEC turns on the cooling function, the probe temperature drops, and the heat on the other side of the TEC is conducted away through the laser cooling water path.

[0055] The present invention has the following advantages:

[0056] (1) The present invention analyzes the ultrasonic echo signal and integrates the data of multiple transducers to determine the direction and distance of the corresponding hair follicle position from the ultrasonic probe, thereby accurately locating the hair follicle position; the signal is fed back to the laser hair removal device, and the hair removal device will perform power optimization hair removal on the hair follicles in the corresponding areas of different densities, thereby achieving the purpose of balanced hair removal. The present invention can change the blindness of existing laser hair removal, and provide "eyes" for laser hair removal, which can achieve precise hair removal.

[0057] (2) The process method adopted by the present invention is simple. The ultrasound-assisted laser hair removal beauty device can achieve accurate and uniform hair removal. At the same time, the arrangement of the ultrasonic transducer continuously emits pulsed ultrasonic waves, and then uses ultrasonic waves of corresponding frequencies to ultrasonically disperse the hair removal liquid, thereby promoting the area of ​​liquid and hair follicle combination and the effect of laser hair removal. The anti-inflammatory component of the drug can be ultrasonically atomized and ultrasonically dispersed in the hair follicle area, thereby achieving anti-inflammatory effects while removing hair, and can make the pH value of the tissue develop towards alkalinity, reduce swelling, and promote blood circulation. In the case of local swelling and pain caused by soft tissue damage or even fracture, it can promote tissue blood circulation and accelerate the disappearance and absorption of swelling. It can relieve local acidosis associated with inflammation. Ultrasound can affect blood flow, produce inflammatory effects, inhibit and play an anti-inflammatory role. It can make white blood cells move and promote angiogenesis. Thereby achieving the process of cleaning, activating, and repairing damaged cell tissues, avoiding the phenomenon of hair follicle redness and swelling. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] Figure 1 This is a flow chart of an ultrasound-assisted laser efficient and precise hair removal beauty method;

[0059] Figure 2 This is a waveform diagram of an ultrasonic transducer of an ultrasound-assisted laser efficient and precise hair removal beauty device;

[0060] Figure 3 This is a schematic diagram of the structure of an ultrasound-assisted laser efficient and precise hair removal beauty device;

[0061] Figure 4 This is an exploded diagram of the structure of an ultrasound-assisted laser efficient and precise hair removal beauty device;

[0062] Figure 5 This is a schematic diagram of the structure of an ultrasonic auxiliary unit of Example 4 of an ultrasonic-assisted laser efficient and precise hair removal beauty device.

[0063] Reference numerals:

[0064] 1. Laser hair removal device; 2. Ultrasonic auxiliary unit; 21. Ultrasonic transducer; 211. Housing; 212. Resonance plate; 213. Piezoelectric ceramic sheet; 214. Matching layer; 22. Ultrasonic bracket; 221. Ultrasonic bracket body; 222. Guide structure; 23. Steering structure; 231. Spring; 232. Universal ball head; 3. Thermistor; 4. TEC. DETAILED DESCRIPTION

[0065] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0066] Example 1

[0067] like Figure 1 As shown, an ultrasound-assisted laser efficient and precise hair removal beauty method comprises the following steps:

[0068] S1, ultrasonic hair follicle detection: the ultrasonic auxiliary unit 2 is brought into contact with the skin, the ultrasonic auxiliary unit 2 sends a pulse signal to the skin, the pulse signal rebounds after contacting the hair follicles of the pores, each ultrasonic auxiliary unit 2 receives the ultrasonic echo signal and amplifies it, uses the time difference method to analyze the characteristics, integrates the data, and finally obtains the direction and distance between the hair follicle and the ultrasonic auxiliary unit 2 and feeds it back to the laser hair removal device 1, and the laser hair removal device 1 adjusts the power to optimize hair removal;

[0069] The pulse signal includes a longitudinal vibration signal and a radial vibration signal, and the ultrasonic echo signal includes a longitudinal ultrasonic echo signal and a radial ultrasonic echo signal;

[0070] The specific method of the time difference method is:

[0071] C=2l / Δt

[0072] Wherein, l is the distance between the hair follicle and the ultrasonic auxiliary unit 2, Δt is the time difference, and C is the speed of sound waves propagating in the human body;

[0073] When the ultrasonic auxiliary unit 2 applies an external voltage, the piezoelectric ceramic piece 213 resonates and drives the resonance plate 212 to vibrate and send out a pulse signal. When the ultrasonic auxiliary unit 2 does not apply an external voltage, the resonance plate 212 receives the ultrasonic echo signal and drives the piezoelectric ceramic piece 213 to vibrate to transmit the ultrasonic echo signal.

[0074] The matching layer acoustic impedance Z of the matching layer 214 of the ultrasonic auxiliary unit 2 is m The calculation method of Z is: m =(Z 1 Z 2 ) 1 / 2 ,

[0075] Among them, Z 1 is the acoustic impedance of the piezoelectric ceramic 213, Z 2 is the acoustic impedance of human skin;

[0076] Sound intensity transmittance T I The calculation method is:

[0077] Sound intensity reflectivity R I The calculation method is:

[0078] Figure 2 This is the waveform diagram of the ultrasonic transducer of the present invention. The square wave is a pulse signal. The sine wave is divided into two parts. The front part is relatively dense, which is the longitudinal wave and the power part of the ultrasonic auxiliary unit. The sparse wave in the back part is the transverse wave and the signal part of the ultrasonic auxiliary unit. The functional part has high energy and can directly act on the epidermis. The signal part has a long transmission distance and can be used to monitor hair follicles.

[0079] S2, ultrasonic atomization and dispersion: one part of the ultrasonic auxiliary unit 2 performs atomization spraying of liquid during hair removal, and the other part performs ultrasonic dispersion, which can reduce inflammation while removing hair and avoid redness and swelling of hair follicles;

[0080] Step S3 is performed while steps S1 and S2 are performed;

[0081] S3, temperature control: the temperature of the hair removal beauty device is monitored by the thermistor 3 installed at the front end of the ultrasonic auxiliary unit 2. When the temperature is higher than the set temperature, the TEC4 turns on the cooling function to reduce the temperature of the hair removal beauty device. At the same time, the heat on the other side of the TEC4 is conducted away through the cooling water path of the laser hair removal device 1.

[0082] Example 2

[0083] like Figure 1 As shown, an ultrasound-assisted laser efficient and precise hair removal beauty method comprises the following steps:

[0084] S1, each ultrasonic unit 2 sends out a pulse signal, the signal bounces back after contacting the hair follicle of the pore, each ultrasonic unit 2 receives the ultrasonic echo signal, and each ultrasonic unit 2 analyzes the ultrasonic echo signal,

[0085] By setting the corresponding frequency of the transducer 21, with the help of the longitudinal vibration and radial vibration frequencies of the transducer 21, after the two waves collide with the hair follicle, the longitudinal vibration is carried by the radial vibration wave to rebound, the returned signal is amplified, and the characteristics are analyzed. Through the data integration of multiple transducers 21, the direction and distance of the corresponding hair follicle position from the ultrasonic probe are determined, so as to accurately locate the hair follicle position; the signal is fed back to the laser hair removal device 1, and the hair removal device 1 will perform power optimization hair removal on the hair follicles in the corresponding areas of different densities, thereby achieving the purpose of balanced hair removal. The principle is as follows:

[0086] The ultrasonic unit 2 is made of piezoelectric ceramics. Piezoelectric ultrasonic waves actually work by using the resonance of piezoelectric crystals. The internal structure of the ultrasonic generator has two piezoelectric chips 213 and a resonance plate 212. When a pulse signal is applied to its two poles, and its frequency is equal to the natural oscillation frequency of the piezoelectric chip, the piezoelectric chip 213 will resonate and drive the resonance plate 212 to vibrate, thus generating ultrasonic waves. On the contrary, if no voltage is applied between the two electrodes, when the resonance plate 212 receives ultrasonic waves, it will press the piezoelectric chip 213 to vibrate, converting mechanical energy into electrical signals, and then it becomes an ultrasonic receiver.

[0087] After the ultrasonic wave is emitted, it will be reflected when it encounters the hair follicle. The reflected ultrasonic signal will be received by the array ultrasonic unit 2. After each unit of the ultrasonic array 2 receives the signal, it is amplified by the signal amplifier. The specific position of the hair follicle relative to the probe can be obtained through the time difference method. Through regional data measurement, the density of the hair follicle, the depth of the hair follicle and other key information can be obtained. The principle of the time difference algorithm is as follows:

[0088] C=2l / Δt

[0089] Where l is the distance between the hair follicle and the ultrasonic auxiliary unit, Δt is the time difference, and C is the speed of sound waves propagating in the human body.

[0090] Figure 2 This is the waveform diagram of the ultrasonic transducer of the present invention. The square wave is a pulse signal. The sine wave is divided into two parts. The front part is relatively dense, which is the longitudinal wave and the power part of the ultrasonic auxiliary unit. The sparse wave in the back part is the transverse wave and the signal part of the ultrasonic auxiliary unit. The functional part has high energy and can directly act on the epidermis. The signal part has a long transmission distance and can be used to monitor hair follicles.

[0091] S2. Use a part of the ultrasonic wave for atomization spraying liquid, and another part for ultrasonic dispersion. Ultrasonic vibration can cause the movement of substances in tissue cells. Due to the fine massage of ultrasound, the cell plasma flows, the cells oscillate, rotate, and rub, thereby producing the effect of cell massage, also known as "internal massage". This is a unique feature of ultrasonic treatment, which can change the permeability of cell membranes, stimulate the diffusion process of semi-permeable membranes of cells, promote metabolism, accelerate blood and lymphatic circulation, improve cell ischemia and hypoxia, improve tissue nutrition, change protein synthesis rate, and enhance regeneration function.

[0092] This arrangement method continuously emits pulsed ultrasonic waves, and then uses ultrasonic waves of corresponding frequencies to ultrasonically disperse the depilatory liquid, thereby promoting the area of ​​liquid and hair follicle combination and the effect of laser hair removal. At the same time, the anti-inflammatory drugs can be ultrasonically atomized and dispersed in the hair follicle area through ultrasound, so that the hair can be removed and inflammation can be eliminated at the same time. Moreover, under the action of ultrasound, the pH value of the tissue can be developed towards alkalinity, which can reduce swelling and promote blood circulation. For local swelling and pain caused by soft tissue injury or even fracture, it can promote tissue blood circulation and accelerate the disappearance and absorption of swelling. It can relieve local acidosis associated with inflammation. Ultrasound can affect blood flow, produce inflammatory effects, inhibit and play an anti-inflammatory role. It can make white blood cells move and promote angiogenesis. In this way, the damaged cell tissue can be cleaned, activated and repaired, and the phenomenon of hair follicle redness and swelling can be avoided.

[0093] S3. For the ultrasonic transducer 21 of the ultrasonic auxiliary unit 2, it has very high requirements for the matching layer. Only when the impedance of the sound-generating material and the matching layer 214 are perfectly connected, the transducer 21 can show good characteristics. Especially for medical ultrasound, the impedance of the piezoelectric crystal 213 is 35MRayl, and the impedance of the human body is 1.5MRayl. Without the matching layer 214, the transmittance of ultrasound is only about 15.6%. After adding the matching layer 214, the transmittance of ultrasound can rise to 60%. Adding the matching layer 214 can greatly improve the impedance matching, so that more ultrasonic energy is transmitted into the skin, and more effective treatment can be performed.

[0094] The ultrasonic auxiliary unit 2 uses a 1 / 4 wavelength single matching layer 214 for matching. The function of the matching layer 214 is to buffer the acoustic impedance gradient between the piezoelectric ceramic 213 and the transmission medium, thereby improving the energy transmittance. The design of the acoustic impedance matching layer needs to meet a specific acoustic impedance and a specific thickness, i.e., 1 / 4 wavelength. The characteristic acoustic impedance value of the 1 / 4 wavelength matching layer is as follows:

[0095] Z m =(Z 1 Z 2 ) 1 / 2

[0096] Where Z m is the acoustic impedance of the matching layer, Z 1 is the acoustic impedance of PZT, Z 2 is the acoustic impedance of human skin.

[0097] The acoustic intensity transmittance and reflectance are calculated as follows:

[0098] Sound intensity transmittance and reflectivity:

[0099]

[0100]

[0101] Where T I is the sound intensity transmittance, R I is the sound intensity reflectivity, Z 1 is the impedance of medium 1, Z 2 is the impedance of medium 2.

[0102] S4. Unique design of ultrasonic auxiliary unit: Due to the frequency shift phenomenon of PZT itself as the temperature changes, the temperature change has a great impact on the ultrasonic signal. This structure contains TEC4, which can control the temperature of the ultrasonic unit and realize the constant temperature operation of the ultrasonic unit. In addition, the low temperature of the probe of the ultrasonic assisted laser hair removal beauty device is conducive to reducing the tingling sensation of the skin during hair removal.

[0103] TEC4 is based on a semiconductor material using the Peltier effect. By applying a low DC voltage to both ends, heat will flow from one end of the element to the other. At this time, the temperature of one end of the refrigerator will decrease, while the temperature of the other end will rise at the same time. Thermistor 3 is installed at the front end of the device to monitor the temperature of the device. When the temperature of the device is higher than the set temperature, TEC4 turns on the cooling function, the probe temperature decreases, and the heat on the other side of TEC4 is conducted away through the laser cooling water path.

[0104] Example 3

[0105] like Figure 3-4 As shown, an ultrasound-assisted laser high-efficiency and precise hair removal beauty device comprises a laser hair removal device 1, an ultrasound-assisted unit 2 arranged at the output end of the laser 1, a thermistor 3 arranged at the front end of the ultrasound-assisted unit 2, and a TEC4 electrically connected to the thermistor 3, wherein the TEC4 is arranged above the ultrasound-assisted unit 2;

[0106] The ultrasonic auxiliary unit 2 includes at least two ultrasonic transducers 21 arranged at the laser emitting end of the laser hair removal device 1. The ultrasonic transducer 21 includes a shell 211 and a resonance plate 212, a piezoelectric ceramic sheet 213, and a matching layer 214 arranged in the shell 211 from top to bottom. The ultrasonic transducers 21 are arranged in an array, and the shell 211 includes a cooling head.

[0107] Example 4

[0108] like Figure 3-5 As shown, an ultrasound-assisted laser high-efficiency and precise hair removal beauty device comprises a laser hair removal device 1, an ultrasound-assisted unit 2 arranged at the output end of the laser 1, a thermistor 3 arranged at the front end of the ultrasound-assisted unit 2, and a TEC4 electrically connected to the thermistor 3, wherein the TEC4 is arranged above the ultrasound-assisted unit 2;

[0109] The ultrasonic auxiliary unit 2 includes at least two ultrasonic transducers 21 arranged at the laser emitting end of the laser hair removal device 1, an ultrasonic support 22 arranged above the ultrasonic transducer 21, and a steering structure 23 connecting the ultrasonic support 22 and the ultrasonic transducer 21;

[0110] The ultrasonic transducer 21 includes a housing 211 and a resonance plate 212, a piezoelectric ceramic sheet 213, and a matching layer 214 arranged in the housing 211 from top to bottom. The ultrasonic transducers 21 are arranged in an array, and the housing 211 includes a cooling head.

[0111] The ultrasonic auxiliary unit 2 also includes an ultrasonic support 22 including an ultrasonic support body 221 disposed above the ultrasonic transducer 21 and a guide structure 222 disposed at the lower part of the ultrasonic support body 221 and connected to the steering structure 23. The guide structure 222 is a hollow structure, and the number of the guide structures 222 is the same as the number of the ultrasonic transducers 21.

[0112] The steering structure 23 includes a spring 231 disposed in the guide structure 222 and a universal ball head 232 connecting the spring 231 and the ultrasonic transducer 21. The universal ball head 232 has a spherical front end and a rod-shaped rear end. A groove is disposed on the upper portion of the ultrasonic transducer 21. The front end of the universal ball head 232 is embedded in the groove and can slide in the groove.

[0113] The diameter of the piezoelectric ceramic sheet 213 is 2 mm to 50 mm;

[0114] The ratio of the diameter of the matching layer 214 to the diameter of the piezoelectric ceramic sheet 213 is 0.05:1 to 1:0.05, and the ratio of the thickness of the matching layer 214 to the thickness of the piezoelectric ceramic sheet 213 is 0.05:1 to 1:0.05;

[0115] The shell 211 is made of metal or organic matter with a thickness of 0.001-10 mm. The number of ultrasonic transducers 21 is 8 and they are divided into 3 rows, with 3 in the first row and 3 in the third row and 2 in the second row.

[0116] Example 5

[0117] like Figure 3-4 As shown, an ultrasound-assisted laser efficient and precise hair removal beauty device comprises a laser hair removal unit 1, an ultrasound-assisted unit 2, a TEC temperature control unit 4, and a thermistor 3.

[0118] Laser hair removal unit 1 is the mainstream laser on the market;

[0119] The ultrasonic auxiliary unit 2 is composed of a piezoelectric ceramic sheet 213, a matching layer 214, a housing 211 and leads;

[0120] The size of the piezoelectric ceramic sheet 213 is 16 mm;

[0121] The diameter ratio of the matching layer 214 to the piezoelectric ceramic sheet 213 is 1:1;

[0122] The thickness ratio of the matching layer 214 to the piezoelectric ceramic sheet 213 is 1:1;

[0123] The shell 211 of the ultrasonic auxiliary unit 2 is made of metal or organic material, and the thickness of the emitting surface of the shell 211 is 0.2 mm;

[0124] The number of ultrasonic auxiliary units 2 is six.

[0125] Set the TEC4 monitoring temperature to 25℃. As the probe contacts the skin, the temperature is controlled by TEC4 to keep the surface temperature of the human skin at 25℃. The ultrasonic auxiliary unit 2 assists laser precision hair removal in a constant temperature environment. After the ultrasonic wave is emitted, it will be reflected when it meets the hair follicle. The reflected ultrasonic signal will be received by the array ultrasonic unit. After each unit of the ultrasonic array receives the signal, it is amplified by the signal amplifier. The specific position of the hair follicle relative to the probe can be obtained by the time difference method. Through regional data measurement, the density of the hair follicle, the depth of the hair follicle and other key information can be obtained. Laser hair removal is performed based on the feedback information. The ultrasonic auxiliary function is used for synchronous anti-inflammatory while removing hair. The ultrasonic probe has the effect of introducing essence. After the hair removal is completed, this part can be used for essence introduction to promote skin absorption and keep the skin young. Thus, the effect of auxiliary hair removal is achieved.

[0126] Example 6

[0127] like Figure 3-4As shown, an ultrasound-assisted laser efficient and precise hair removal beauty device comprises a laser hair removal unit 1, an ultrasound-assisted unit 2, a TEC temperature control unit 4, and a thermistor 3.

[0128] Laser hair removal unit 1 is the mainstream laser on the market;

[0129] The ultrasonic auxiliary unit 1 is composed of a piezoelectric ceramic sheet 213, a matching layer 214, a housing 211 and leads;

[0130] The size of the piezoelectric ceramic sheet 213 is 10 mm;

[0131] The diameter ratio of the matching layer 214 to the piezoelectric ceramic sheet 213 is 1:1;

[0132] The thickness ratio of the matching layer 214 to the piezoelectric ceramic sheet 213 is 1:1;

[0133] The shell 211 of the ultrasonic auxiliary unit 2 is made of metal or organic material, and the thickness of the shell emitting surface is 0.2mm;

[0134] The number of ultrasonic auxiliary units 2 is twelve.

[0135] Set the TEC4 monitoring temperature to 4°C. As the probe contacts the skin, the temperature is controlled by TEC4 to keep the surface temperature of the human skin at 4°C. The ultrasonic auxiliary unit 2 assists in laser precision hair removal in a constant temperature environment. After the ultrasonic wave is emitted, it will be reflected when it meets the hair follicle. The reflected ultrasonic signal will be received by the array ultrasonic unit. After each unit of the ultrasonic array receives the signal, it is amplified by the signal amplifier. The specific position of the hair follicle relative to the probe can be obtained by the time difference method. Through regional data measurement, the density of the hair follicle, the depth of the hair follicle and other key information can be obtained. Laser hair removal is performed based on the feedback information. The ultrasonic auxiliary function is used for synchronous anti-inflammatory while removing hair. The ultrasonic probe has the effect of introducing essence. After the hair removal is completed, this part can be used for essence introduction to promote skin absorption and keep the skin young. Thus, the effect of auxiliary hair removal is achieved.

[0136] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An ultrasound-assisted laser high-efficiency and precise hair removal beauty device, characterized in that: The invention comprises a laser hair removal device (1), an ultrasonic auxiliary unit (2) arranged at the output end of the laser hair removal device (1), a thermistor (3) arranged at the front end of the ultrasonic auxiliary unit (2), and a TEC (4) electrically connected to the thermistor (3), wherein the TEC (4) is arranged above the ultrasonic auxiliary unit (2); The ultrasonic auxiliary unit (2) comprises at least two ultrasonic transducers (21) arranged at the laser emission end of the laser hair removal device (1), the ultrasonic transducer (21) comprising a housing (211) and a resonance plate (212), a piezoelectric ceramic sheet (213), and a matching layer (214) arranged in the housing (211) from top to bottom, the ultrasonic transducers (21) are arranged in an array, and the housing (211) comprises a cooling head; The ultrasonic auxiliary unit (2) further comprises an ultrasonic support (22) arranged above the ultrasonic transducer (21) and a steering structure (23) connecting the ultrasonic support (22) and the ultrasonic transducer (21); The ultrasonic support (22) comprises an ultrasonic support body (221) arranged above the ultrasonic transducer (21) and a guide structure (222) arranged at the bottom of the ultrasonic support body (221) and connected to the steering structure (23), wherein the guide structure (222) is a hollow structure, and the number of the guide structures (222) is the same as the number of the ultrasonic transducers (21); The steering structure (23) comprises a spring (231) arranged in the guide structure (222) and a universal ball head (232) connected to the spring (231) and the ultrasonic transducer (21); the universal ball head (232) has a spherical front end and a rod-shaped rear end; a groove is arranged on the upper part of the ultrasonic transducer (21); the front end of the universal ball head (232) is embedded in the groove and can slide in the groove; The ultrasonic auxiliary unit (2) sends a pulse signal to the skin and bounces back. Each of the ultrasonic auxiliary units (2) receives the ultrasonic echo signal and amplifies it, uses the time difference method to analyze the characteristics, integrates the data, and finally obtains the direction and distance between the hair follicle and the ultrasonic auxiliary unit (2) and then feeds it back to the laser hair removal device (1). The laser hair removal device (1) adjusts the power; The specific method of the time difference method is: C = 2l / Δt; Wherein, l is the distance between the hair follicle and the ultrasonic auxiliary unit (2), Δt is the time difference, and C is the speed of sound waves propagating in the human body; A part of the ultrasonic auxiliary unit (2) performs atomization spraying of liquid, and another part performs ultrasonic dispersion.

2. The ultrasound-assisted laser high-efficiency and precise hair removal beauty device according to claim 1, characterized in that: The diameter of the piezoelectric ceramic sheet (213) is 2 mm to 50 mm; The ratio of the diameter of the matching layer (214) to the diameter of the piezoelectric ceramic sheet (213) is 0.05:1 to 1:0.05, and the ratio of the thickness of the matching layer (214) to the thickness of the piezoelectric ceramic sheet (213) is 0.05:1 to 1:0.

05.

3. The ultrasound-assisted laser high-efficiency and precise hair removal beauty device according to claim 1, characterized in that: The shell (211) is made of metal or organic matter and has a thickness of 0.001 to 10 mm. The number of ultrasonic transducers (21) is 8 and they are divided into 3 rows, with the number of the first row and the third row both being 3 and the number of the second row being 2.

4. The ultrasound-assisted laser high-efficiency and precise hair removal beauty device according to claim 1, characterized in that: When an external voltage is applied to the ultrasonic auxiliary unit (2), the piezoelectric ceramic sheet (213) resonates and drives the resonance plate (212) to vibrate and emit the pulse signal; when no external voltage is applied to the ultrasonic auxiliary unit (2), the resonance plate (212) receives the ultrasonic echo signal and drives the piezoelectric ceramic sheet (213) to vibrate and transmit the ultrasonic echo signal.

5. The ultrasound-assisted laser efficient and precise hair removal beauty device according to claim 1, characterized in that: The matching layer acoustic impedance Z of the matching layer (214) of the ultrasonic auxiliary unit (2) is m The calculation method of Z is: m =(Z1Z2) 1 / 2 , Wherein, Z1 is the acoustic impedance of the piezoelectric ceramic sheet (213), and Z2 is the acoustic impedance of human skin; Sound intensity transmittance T I The calculation method is: Sound intensity reflectivity R I The calculation method is:

6. The ultrasound-assisted laser high-efficiency and precise hair removal beauty device according to claim 1, characterized in that: Ultrasonic detection and temperature control while atomization and dispersion; The temperature of the hair removal beauty device is monitored by a thermistor (3) installed at the front end of the ultrasonic auxiliary unit (2). When the temperature is higher than the set temperature, the TEC (4) turns on the cooling function to reduce the temperature of the hair removal beauty device. At the same time, the heat on the other side of the TEC (4) is conducted away through the cooling water path of the laser hair removal device (1).

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