Medical beauty treatment method and device based on photoacoustic effect

Abstract

The invention discloses a medical cosmetology method and device based on a photoacoustic effect. Existing skin anti-wrinkle and anti-aging photoelectric equipment such as radio frequency and ultrasound has the problems of pain, discomfort, limited application depth, unstable flash type light source energy output and the like. According to the method, pulse laser with a specific wave band and pulse duration is utilized to irradiate the skin to generate a photoacoustic effect, 400-700nm of the pulse laser acts on a surface layer, 700-1300nm of the pulse laser can reach a deep layer of 50mm, collagen regeneration and wrinkle resistance are promoted, and the method is painless and radiation-free. The device comprises a laser generating part, a light splitting part, a combined lens part and the like, a controller coordinates all the parts to work, a steering engine adjusts a reflector to control the laser depth, and an ultrasonic sensor assists. The system has the advantages that energy is accurately controlled, the system is suitable for skin tissues of all layers, the defects in the prior art are effectively overcome, and a safer and more efficient new scheme is provided for the field of medical cosmetology.

Description

Technical Field

[0001] The present invention relates to the field of medical cosmetology based on photoacoustic effect, and specifically to a medical cosmetology method and device based on photoacoustic effect. Background Art

[0002] In the field of medical beauty for anti-wrinkle and anti-aging, the current mainstream optoelectronic devices are mainly radio frequency and ultrasound technology. Radio frequency devices rely on electrodes to generate heat, acting on the dermis of the skin, usually less than 5mm deep; ultrasound technology uses ultrasound to generate heat, mainly acting on the fascia layer. However, both methods have significant defects. During the treatment process, they will cause pain and discomfort to the patient, greatly affecting the patient's treatment experience.

[0003] From the perspective of technical principles, the heat generation method is relatively simple, relying only on thermal stimulation of skin cells to promote the production of collagen and elastic fibers, lacking a diversified treatment mechanism. In addition, existing flash light source products have serious problems in energy output, and the output energy cannot be accurately controlled, resulting in uncertainty and instability in energy output, which directly affects the reliability and consistency of the beauty effect and is difficult to meet the growing demand for precision medical beauty. Summary of the invention

[0004] The purpose of the present invention is to provide a medical cosmetic method and device based on the photoacoustic effect to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a medical cosmetic method based on photoacoustic effect, comprising the following steps: The laser generator is started and precisely controlled by a specific controller to emit pulsed lasers; the pulsed laser has a specific pulse duration characteristic, and its pulse duration is strictly controlled within the range of 1-100 nanoseconds; in the treatment application for different layers of the skin, a pulsed laser in the 400-700nm band is used to accurately act on the surface of the skin. The selection of this band is based on the absorption characteristics of the skin surface cells to the laser in this band and the photoacoustic effect reaction mechanism, which can induce moderate photothermal and photoacoustic effects on the surface of the skin; at the same time, a pulsed laser in the 700-1300nm band is used to act on the deep layer of the skin, and its maximum depth can reach 50mm. This band can effectively penetrate the surface of the skin to reach the deep tissue, and stimulate the photoacoustic reaction of the deep tissue according to the physiological structure and optical characteristics of the deep tissue, so as to achieve targeted treatment of skin tissues at different depths; The laser emitted from the laser generating device will enter the spectrometer for processing; the function of the spectrometer is to reasonably distribute and adjust the wavelength, energy and other parameters of the laser to ensure that the laser can act on the skin in the expected manner during the subsequent treatment process; in the process of the laser being processed by the spectrometer, a specific laser spectrometer signal will be generated, which will be quickly captured and received by the signal receiving converter; the signal receiving converter serves as an information bridge between the laser spectrometer signal and the controller, and accurately transmits the received signal to the controller; after receiving the signal, the controller will quickly and accurately control the output of the ultrasonic signal to the corresponding position of the skin according to the preset program and algorithm; in this process, the controller comprehensively considers the laser processing situation and the actual condition of the skin to achieve the coordinated cooperation of the ultrasonic signal and the laser action, thereby enhancing the treatment effect; After the pulsed laser is successfully irradiated to the skin, specific substances in the skin tissue will absorb the laser light energy and quickly convert it into heat energy; due to the generation of heat energy, the temperature of the medium around the skin will change significantly, thereby causing thermal expansion; during the thermal expansion process, the skin tissue will generate ultrasonic waves, thereby realizing the complete process of the photoacoustic effect; through this photoacoustic effect, the skin can generate enough heat to effectively promote collagen regeneration, thereby achieving an anti-wrinkle effect.

[0006] Furthermore, when the pulsed laser irradiates the skin, the spot area formed on the skin surface can be adjusted within a range of 1-10 square centimeters, which is achieved by a spot area adjustment device arranged in the device; the adjustment device is connected to the controller and receives instructions from the controller to change the position or angle of the optical element, thereby changing the spot size; when treating areas with shallow skin wrinkles and a smaller area, the spot area can be reduced to about 1 square centimeter, so that the laser energy is more concentrated in the target area, thereby enhancing the local treatment effect; and when treating a large area of ​​sagging skin, the spot area can be increased to 10 square centimeters to improve the treatment efficiency and ensure that different skin conditions can obtain appropriate laser energy distribution.

[0007] Furthermore, the controller is preset with laser energy and ultrasonic signal output modes for different skin types and conditions, including normal skin, dry skin, oily skin, sensitive skin types, and mild wrinkles, moderate wrinkles, and severe wrinkle conditions; the controller obtains skin moisture content, elasticity, and roughness parameter information through a skin detection sensor connected to the device, automatically identifies the skin type and condition, and selects the corresponding preset mode.

[0008] Furthermore, the pulse frequency of the pulsed laser emitted by the laser generating device is adjustable within the range of 10-100 Hz; in the early stage of treatment, in order to allow the skin to gradually adapt to laser stimulation, the pulse frequency can be set at around 10 Hz, so that the skin can produce a mild photoacoustic response at a lower frequency; as the treatment progresses, when the skin's tolerance to laser increases, the pulse frequency can be increased to 100 Hz to enhance the intensity and frequency of the photoacoustic effect and accelerate the collagen regeneration process; this adjustable pulse frequency design can be flexibly adjusted according to the patient's treatment stage and skin reaction, thereby improving treatment effect and safety.

[0009] A medical cosmetic device based on photoacoustic effect, wherein the device realizes cosmetic treatment by a medical cosmetic method based on photoacoustic effect, comprising: The beauty instrument body, as the basic structure of the whole device, provides a stable platform for the installation and fixation of other components; at the front end of the beauty instrument body, a connector is carefully installed, which plays a key role in connection and support in the device, ensuring the stable installation and precise position relationship of subsequent components; The connecting head is fixed with a servo mounting plate by firm bolts, and a gasket is arranged between the servo mounting plate and the connecting head. The function of the gasket is to adjust and ensure the installation accuracy and stability of the servo mounting plate, and prevent the performance of the device from being affected by factors such as installation errors or vibrations. A mirror cover is installed at the front end of the servo mounting plate, which not only protects the internal optical components, but also optimizes the light propagation environment and reduces the influence of external interference on laser transmission. Servos are installed on both sides of the servo mounting plate. As the key power component for controlling the direction of the reflector, the servo's internal output shaft is closely connected to the reflector. During the medical beauty process, the servo can accurately control the direction of the reflector according to the instructions of the controller, thereby achieving precise adjustment of the depth of laser irradiation on the skin. By changing the angle of the reflector, the laser can irradiate the skin at different angles and paths to meet the needs of treating skin tissues at different depths, ensuring that the laser energy can accurately act on the target skin layer. An ultrasonic sensor is set in the middle of the servo mounting plate. The ultrasonic sensor plays an important role in detection and feedback in the device. It can keenly sense the laser spectroscopic signals and transmit these signals to the controller in a timely manner, providing key data support for the controller's subsequent control decisions. A combined lens is fixed inside the gasket at the upper end of the ultrasonic sensor. The combined lens further focuses and adjusts the laser after being processed by the spectroscopic device, optimizes the propagation characteristics of the laser, enables it to better act on the skin tissue, and improves the treatment effect. The laser generator is the source of laser energy for the entire device and is responsible for emitting pulsed lasers with specific wavelengths and pulse characteristics. It is closely connected to the controller and receives control instructions from the controller to ensure that the laser emission parameters meet the treatment requirements. During the treatment process, the laser generator accurately generates the required pulsed lasers according to the settings of the controller, providing a stable energy basis for subsequent photoacoustic effect treatment. The spectrometer is connected to the laser generator and plays a key role in the laser transmission path. The spectrometer can carefully distribute and adjust the wavelength, energy and other parameters of the laser according to the treatment needs, ensuring that the laser has the best treatment performance before entering the subsequent components and acting on the skin. Through the processing of the spectrometer, the laser can better adapt to the needs of different skin layers and treatment areas, improving the pertinence and effectiveness of the treatment. The signal receiving converter plays a key role in information transmission in the device; it is connected to the spectrometer and the controller, and can quickly and accurately receive the laser spectrometer signals, and transmit these signals to the controller in a timely and stable manner; the high precision and high reliability of the signal receiving converter ensure that the controller can obtain key information in the laser processing process in a timely manner, thereby achieving precise control and coordinated work of the entire device, ensuring the smooth progress of the medical cosmetic treatment process and the optimization of the treatment effect.

[0010] Furthermore, the servo mounting plate is made of aluminum alloy, which has good strength and heat dissipation performance. During the long-term operation of the device, the heat generated by the servo and the heat that may be generated during the laser transmission process can be quickly dissipated through the servo mounting plate made of aluminum alloy, thereby avoiding heat accumulation and affecting the performance of electronic components and optical components inside the device. At the same time, the high strength characteristics of aluminum alloy ensure that the servo mounting plate will not be deformed when subjected to the vibration and operating force of the servo, thereby ensuring the position accuracy and stability of the reflector, thereby ensuring precise adjustment of the laser irradiation depth.

[0011] Furthermore, the surface of the reflector is coated with multiple layers of optical films, including anti-reflection films and reflective films; the anti-reflection films can effectively reduce the reflection loss of the laser on the surface of the reflector, improve the transmittance of the laser, and enable more laser energy to be irradiated onto the skin; the reflective film can accurately control the reflection angle and direction of the laser, ensuring that when the servo adjusts the reflector, the laser can accurately irradiate the target skin area along the expected path; the design and application of these optical films significantly improve the optical performance of the reflector and optimize the transmission and effect of the laser in the device.

[0012] Furthermore, the ultrasonic sensor has an automatic calibration function and is equipped with a calibration chip inside. The calibration operation is performed regularly when the device is started and during operation. By transmitting and receiving ultrasonic signals of known frequency and intensity and comparing them with preset standards, the sensitivity and frequency response characteristics of the ultrasonic sensor are automatically adjusted. This ensures that the ultrasonic sensor always maintains high-precision detection performance, accurately receives laser spectrometry signals and reliably transmits them to the controller, thereby ensuring the accuracy of the control and collaborative work of the entire device and improving the reliability of medical cosmetic treatments.

[0013] Furthermore, the combined lens is composed of optical lenses with different refractive indices, and its focal length is adjustable within the range of 10-50mm; by adjusting the focal length of the combined lens, the focal depth and spot size of the laser can be changed to adapt to the treatment needs of skin tissues at different depths; when treating the surface layer of the skin, the focal length can be adjusted to about 10mm, so that the laser forms a smaller spot and a stronger energy density on the surface layer of the skin; and when treating deep skin tissue, the focal length is adjusted to 50mm to ensure that the laser can be accurately focused on the target depth, giving full play to the therapeutic effect of the photoacoustic effect at different skin layers.

[0014] Furthermore, a detachable connection structure is adopted between the connector and the beauty instrument body, such as a snap connection or a threaded connection; when a component inside the device fails or needs to be upgraded, the internal component can be quickly inspected, replaced or debugged by simply removing the connector.

[0015] Compared with the prior art, the present invention has the following beneficial effects: In terms of treatment effect, through the unique photoacoustic effect, laser irradiation causes the skin to absorb light energy and generate heat energy, which in turn causes thermal expansion and generates ultrasound, achieving a dual treatment effect on the skin, which can effectively promote collagen regeneration and achieve anti-wrinkle effects. In addition, lasers of different wavelengths can be used to accurately act on different depths of the skin. The 400-700nm band is suitable for the surface layer of the skin, and the 700-1300nm band can penetrate deep into the skin up to 50mm, achieving a full range of skin layer treatment.

[0016] In terms of safety, the entire treatment process is completely painless and radiation-free, cleverly avoiding the problem of skin damage in traditional methods and providing patients with a safer and more comfortable medical beauty option.

[0017] From the perspective of treatment experience, this invention overcomes the pain and discomfort caused by radio frequency and ultrasound treatments, greatly improving patients' acceptance and satisfaction during the treatment process. It has important clinical application value and market promotion potential, and is expected to promote significant progress in technology and experience in the medical beauty industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a control flow chart of the device of the present invention; Figure 2 It is the combined lens laser beam circuit diagram of the present invention; Figure 3 It is a flow logic diagram of the present invention; Figure 4 It is a schematic diagram of the appearance of the device of the present invention; Figure 5 It is a schematic diagram of a laser head of the present invention.

[0019] In the figure: 1. Beauty instrument body; 2. Connector; 3. Servo; 4. Servo mounting plate; 5. Mirror cover; 6. Ultrasonic sensor; 7. Reflector; 8. Gasket; 9. Combined lens. DETAILED DESCRIPTION

[0020] See also Figure 1-5 The present invention provides a technical solution: an implementation method of a medical cosmetic method and device based on photoacoustic effect First, obtain all parts of the beauty instrument body 1, connector 2, servo 3, servo mounting plate 4, mirror cover 5, ultrasonic sensor 6, reflector 7, gasket 8 and combined lens 9, and ensure that all parts are not damaged, the surface is clean and meets the design specifications.

[0021] Perform separate functional tests on the laser generator and controller to check the accuracy of their laser emission parameters and the stability of the control signal to ensure that they can work properly.

[0022] The steering gear mounting plate 4 is fixed to the connector 2 by bolts. During the installation process, a gasket 8 is placed between the steering gear mounting plate 4 and the connector 2 to ensure the flatness and stability of the installation. Use a torque wrench to tighten the bolts according to the specified torque value to prevent over-tightening or over-loosening.

[0023] Install the servo 3 on both sides of the servo mounting plate 4, align the mounting holes of the servo 3 with the corresponding holes on the servo mounting plate 4, insert the bolts and tighten them. Ensure that the servo 3 is firmly installed and its output shaft can rotate flexibly.

[0024] The reflector 7 is mounted on the internal output shaft of the servo 3 and positioned and fixed with a precise fixture to ensure that the coaxiality between the reflector 7 and the output shaft is within the allowable error range, thereby ensuring the accuracy of the laser reflection angle of the reflector 7 during its rotation.

[0025] Install the ultrasonic sensor 6 in the middle of the steering gear mounting plate 4, connect the pins of the ultrasonic sensor 6 to the corresponding circuit board, and ensure that the connection is reliable without cold solder joints or short circuits. Then, fix the combined lens 9 inside the gasket 8 at the upper end of the ultrasonic sensor 6, and use a special fixing glue to fix the combined lens 9 on the gasket 8 to ensure that the position of the combined lens 9 is stable and the optical axis is consistent with the overall optical path of the device.

[0026] The mirror cover 5 is mounted on the front end of the servo mounting plate 4 and fixed by buckles or screws to ensure that the mirror cover 5 can fit tightly to prevent dust and debris from entering the device and affecting the optical performance.

[0027] Install the connector 2 at the front end of the beauty instrument body 1, and install it correctly according to the connection method between the connector 2 and the beauty instrument body 1, such as threaded connection or snap connection, to ensure that the connection is firm and well sealed.

[0028] Connect the power supply of the device, start the controller, and enter the debugging mode. First, calibrate the servo 3, send a command through the controller to rotate the servo 3 to the initial position, and use the angle sensor that can be temporarily installed near the reflector 7 to detect whether the angle of the reflector 7 is accurate. If there is a deviation, adjust the parameters of the servo 3 through the calibration program of the controller until the angle of the reflector 7 reaches the preset initial value.

[0029] Debug the laser generator, set different wavelengths and pulse parameters, and use a power meter to check whether the laser output power meets the set value. If the power deviation is large, check the power supply, resonant cavity and other key components of the laser generator, adjust the relevant parameters or replace the faulty components until the laser output power is stable and accurate.

[0030] Test the function of the ultrasonic sensor 6 by sending a simulated laser spectroscopic signal to the ultrasonic sensor 6 to check whether the ultrasonic sensor 6 can accurately receive and transmit the signal to the controller. Check whether the received signal strength and frequency are normal on the controller side. If there is an abnormality, check the connection line, sensitivity setting, etc. of the ultrasonic sensor 6 and make corresponding adjustments or repairs.

[0031] Test the optical performance of the combined lens 9 by using a collimator to emit parallel light through the combined lens 9 and observe the focusing of the light and the quality of the light spot. If the light spot is deformed or inaccurately focused, adjust the position of the combined lens 9 or check whether there is dirt or damage on the lens surface to ensure that the combined lens 9 can work normally.

[0032] Implementation steps of medical cosmetic methods Before medical cosmetic treatment, the patient's skin is thoroughly cleansed to remove dirt, oil and makeup residue on the skin surface. Use a mild cleanser and clean water to wash, then gently dry the skin with a clean towel.

[0033] The patient's skin type and condition are evaluated, and the skin moisture content, elasticity, roughness, pigmentation and other indicators are measured by skin testing instruments to determine whether the patient's skin is normal skin, dry skin, oily skin, sensitive skin, etc., and whether there are mild wrinkles, moderate wrinkles, severe wrinkles, etc. According to the evaluation results, the corresponding preset treatment mode is selected in the controller.

[0034] The patient lies flat on the treatment bed and maintains a comfortable position. The operator aims the treatment head of the beauty instrument, including the connector 2 and related optical and mechanical components, at the skin area that needs to be treated, and keeps the distance between the treatment head and the skin surface within the specified range, generally 5-10 cm. The specific distance can be appropriately adjusted according to the treatment area and laser wavelength.

[0035] The operator starts the laser generator through the controller. According to the patient's skin condition and treatment area, the controller controls the laser generator to emit pulsed laser according to preset parameters. For example, for the treatment of fine lines on the surface of the skin, a laser with a wavelength of 400-700nm is selected, the pulse duration is set at 1-50 nanoseconds, and the pulse frequency is 10-30Hz; for the treatment of deep wrinkles or sagging skin, a laser with a wavelength of 700-1300nm is used, the pulse duration is 50-100 nanoseconds, and the pulse frequency is 30-100Hz.

[0036] After the laser is processed by the spectroscopic device, a part of the laser is irradiated to the skin surface according to the predetermined optical path, and the spectroscopic signal generated by the other part of the laser is received by the signal receiving converter and transmitted to the controller. Based on the received signal, the controller controls the ultrasonic signal to be output to the corresponding position of the skin. The ultrasonic frequency and intensity are adjusted according to the depth and condition of the skin, generally in the range of 1-10MHz, and the intensity is 0.1-1W / cm²; on the other hand, the controller adjusts the action of the servo 3 in real time according to the processing of the laser and the feedback information of the skin to accurately adjust the direction of the reflector 7, thereby changing the depth and angle of the laser irradiation of the skin. During the treatment process, the patient's skin reaction and treatment effect are continuously monitored, such as observing whether the skin has discomfort symptoms such as redness, swelling, pain, and the improvement of wrinkles. If abnormalities are found, adjust the treatment parameters in time or stop the treatment.

[0037] Immediately after treatment, use a cold compress mask or ice pack to cool the treated area for 15-30 minutes to reduce any redness, swelling and heat that may occur on the skin and relieve the patient's discomfort.

[0038] Patients are advised to avoid direct sunlight on the treated area for a period of time after treatment, and to apply sunscreen when going out, with a sun protection index of at least SPF30. At the same time, avoid using irritating cosmetics and skin care products, and it is recommended to use mild moisturizing products to keep the skin hydrated.

[0039] Patients are required to avoid strenuous exercise and high-temperature environments, such as saunas and hot springs, within one week after treatment to prevent excessive sweating and heat on the skin, which may affect the treatment effect. Patients are revisited regularly to observe the recovery of the skin and the durability of the treatment effect. Reexaminations are generally conducted 1 month, 3 months, and 6 months after treatment to record changes in various skin indicators, such as wrinkle depth, skin elasticity, moisture content, etc., and further care suggestions or the need for follow-up treatment are provided to patients based on the reexamination results.

[0040] For wrinkle treatment of the skin around the eyes, since the skin around the eyes is thin and sensitive, a laser with a wavelength of 400-600nm is selected during treatment, the pulse duration is shortened to 1-30 nanoseconds, the pulse frequency is controlled at 10-20Hz, and the laser energy output intensity is reduced. At the same time, the ultrasound frequency is adjusted to 1-5MHz, and the intensity is 0.1-0.5W / cm² to avoid damage to the fragile skin around the eyes. During the operation, the distance and angle between the treatment head and the skin are controlled more carefully, and kept within a close range of 3-5 cm to ensure that the laser can accurately act on the wrinkle area around the eyes while reducing the impact on the surrounding normal tissues.

[0041] For the treatment of forehead wrinkles, the appropriate laser wavelength and parameters are selected according to the depth of the wrinkles. For shallow forehead wrinkles, a laser in the 500-700nm band is used, with a pulse duration of 20-50 nanoseconds and a pulse frequency of 20-40Hz; for deeper wrinkles, a laser in the 700-1000nm band is used, with a pulse duration of 50-80 nanoseconds and a pulse frequency of 40-80Hz. During the treatment process, the angle of the reflector 7 is appropriately adjusted so that the laser can irradiate different parts of the forehead wrinkles at different angles to comprehensively improve the wrinkle condition. At the same time, combined with ultrasound treatment, the ultrasound frequency is 3-8MHz and the intensity is 0.3-0.8W / cm² to enhance the effect of the photoacoustic effect on the forehead skin.

[0042] For the treatment of sagging skin and wrinkles in the cheek area, lasers in the 600-1300nm band are usually used, covering a wider wavelength range to meet the needs of different layers of cheek skin. The pulse duration is 30-100 nanoseconds and the pulse frequency is 30-100Hz, providing sufficient energy to stimulate collagen regeneration. The ultrasound frequency is set at 5-10MHz and the intensity is 0.5-1W / cm², which promotes skin firming and wrinkle reduction. During the treatment, the position of the treatment head and the irradiation direction of the laser are flexibly adjusted according to the texture of the cheek skin and the distribution of sagging areas to ensure that the entire cheek area can be treated evenly and effectively.

[0043] The skin on the neck is looser and has a different texture than the skin on the face. When treating neck wrinkles, choose a laser with a wavelength of 700-1200nm, a pulse duration of 40-90 nanoseconds, and a pulse frequency of 20-60Hz. Since the sensitivity of the neck skin is relatively low, but it requires deeper stimulation, the laser energy should be appropriately increased. The ultrasound frequency is 4-8MHz, and the intensity is 0.4-0.9W / cm², which works synergistically with the laser to enhance the firming effect of the neck skin. During the treatment, the operator needs to pay special attention to the fit between the treatment head and the neck skin to ensure that the laser can act evenly on the surface of the neck skin to avoid uneven energy distribution. At the same time, since the neck skin is frequently active, the patient's neck can be properly fixed during the treatment to reduce skin movement and improve the accuracy and effect of the treatment.

[0044] For patients with dry skin, moisturizing essence can be applied to the treatment area before treatment to increase the moisture content of the skin and improve the skin's tolerance to laser. During the treatment, the energy output intensity of the laser is appropriately reduced, generally by 10%-20%, and the pulse duration is shortened by 10%-30% to reduce skin irritation. The ultrasound frequency and intensity are also reduced accordingly. The ultrasound frequency can be adjusted to 1-6MHz and the intensity is 0.1-0.7W / cm². After treatment, strengthen the skin's moisturizing care. It is recommended to use highly moisturizing skin care products and increase the frequency of using moisturizing masks to maintain the skin's moisture balance.

[0045] Patients with oily skin need to be thoroughly cleaned before treatment to remove excess oil on the skin surface. During the treatment, the energy output intensity of the laser can be appropriately increased by 10%-30%, but the skin's reaction should be closely observed to prevent over-stimulation. The pulse duration can be extended by 10%-20%, and the pulse frequency is 20-80Hz. The ultrasound frequency is 3-9MHz, and the intensity is 0.3-1W / cm². After treatment, pay attention to skin cleansing and oil control, avoid using overly greasy skin care products to prevent pores from being clogged.

[0046] For patients with sensitive skin, detailed skin testing and allergy assessment are required before treatment. During the treatment, the mildest laser parameters are selected, such as lasers in the 400-600nm band, pulse duration of 1-20 nanoseconds, pulse frequency of 5-15Hz, and laser energy output intensity is reduced to 30%-50% of normal levels. The ultrasound frequency is 1-4MHz, and the intensity is 0.1-0.4W / cm². During the treatment, observe the patient's skin reaction at any time. If allergic symptoms such as redness, swelling, and itching occur, the treatment should be stopped immediately and appropriate anti-allergic measures should be taken. After treatment, use repair products specifically for sensitive skin for care to promote skin recovery and repair skin barrier function.

[0047] After each use of the device, use a clean, soft, dust-free cloth dipped in an appropriate amount of anhydrous ethanol or a special optical cleaner to gently wipe the outer surfaces of the beauty instrument body 1, connector 2, mirror cover 5, etc. to remove dust and stains on the surface.

[0048] For the reflector 7 and the combined lens 9, use a special optical cleaning tool, such as lens paper or an air blower. First, use an air blower to gently blow away the dust particles on the surface to prevent the dust from scratching the optical surface. Then, dip a small amount of optical cleaning liquid into the lens paper and gently wipe the optical surface in a circular motion, wiping from the center to the edge, to ensure that the cleaning is thorough and no traces are left.

[0049] Clean the dust around the servo 3 and ultrasonic sensor 6 regularly to prevent dust from entering the interior and affecting their performance. You can use a small vacuum cleaner or compressed air tank for cleaning, but be careful to maintain an appropriate distance and pressure to avoid damage to the components.

[0050] Carry out a comprehensive inspection of the device once a week to check whether the connections of various components are firm, such as whether the bolts are loose, whether the lines are connected normally, etc. Test the laser output power of the laser generator, use a power meter to measure the laser power under different wavelengths and pulse parameters, and compare it with the preset value. If the deviation exceeds 5%, the laser generator needs to be adjusted or repaired.

[0051] The steering gear 3 is calibrated once a month. The controller sends a calibration command to rotate the steering gear 3 to various preset angles, and a high-precision angle measuring instrument is used to detect the deviation between the actual angle of the reflector 7 and the preset angle. If the deviation exceeds 0.5 degrees, the parameters of the steering gear 3 need to be readjusted or the mechanical parts need to be inspected and repaired to ensure the angle control accuracy of the reflector 7.

[0052] The ultrasonic sensor 6 is calibrated and tested for performance every quarter. A standard ultrasonic signal generator is used to send an ultrasonic signal of known frequency and strength to the ultrasonic sensor 6 to check the receiving sensitivity and frequency response characteristics of the ultrasonic sensor 6. If the sensitivity is found to be reduced or the frequency response deviation is large, the ultrasonic sensor 6 needs to be repaired or related parts replaced to ensure the detection accuracy of the ultrasonic sensor 6.

Claims

1. A medical cosmetic method based on photoacoustic effect, characterized in that: The following steps are involved: The laser generator is started and precisely controlled by a specific controller to emit pulsed lasers; the pulsed laser has a specific pulse duration characteristic, and its pulse duration is strictly controlled within the range of 1-100 nanoseconds; in the treatment application for different layers of the skin, a pulsed laser in the 400-700nm band is used to accurately act on the surface of the skin. The selection of this band is based on the absorption characteristics of the skin surface cells to the laser in this band and the photoacoustic effect reaction mechanism, which can induce moderate photothermal and photoacoustic effects on the surface of the skin; at the same time, a pulsed laser in the 700-1300nm band is used to act on the deep layer of the skin, and its maximum depth can reach 50mm. This band can effectively penetrate the surface of the skin to reach the deep tissue, and stimulate the photoacoustic reaction of the deep tissue according to the physiological structure and optical characteristics of the deep tissue, so as to achieve targeted treatment of skin tissues at different depths; The laser emitted from the laser generating device will enter the spectrometer for processing; the function of the spectrometer is to reasonably distribute and adjust the wavelength, energy and other parameters of the laser to ensure that the laser can act on the skin in the expected manner during the subsequent treatment process; in the process of the laser being processed by the spectrometer, a specific laser spectrometer signal will be generated, which will be quickly captured and received by the signal receiving converter; the signal receiving converter serves as an information bridge between the laser spectrometer signal and the controller, and accurately transmits the received signal to the controller; after receiving the signal, the controller will quickly and accurately control the output of the ultrasonic signal to the corresponding position of the skin according to the preset program and algorithm; in this process, the controller comprehensively considers the laser processing situation and the actual condition of the skin to achieve the coordinated cooperation of the ultrasonic signal and the laser action, thereby enhancing the treatment effect; After the pulsed laser is successfully irradiated to the skin, specific substances in the skin tissue will absorb the laser light energy and quickly convert it into heat energy; due to the generation of heat energy, the temperature of the medium around the skin will change significantly, thereby causing thermal expansion; during the thermal expansion process, the skin tissue will generate ultrasonic waves, thereby realizing the complete process of the photoacoustic effect; through this photoacoustic effect, the skin can generate enough heat to effectively promote collagen regeneration, thereby achieving an anti-wrinkle effect.

2. A medical cosmetic device based on photoacoustic effect, wherein the device realizes cosmetic treatment through the control method according to claim 1, characterized in that: include: The beauty instrument body (1) serves as the basic structure of the entire device and provides a stable platform for the installation and fixation of other components; A connector (2) is carefully installed at the front end of the beauty instrument body (1). The connector (2) plays a key role in connection and support in the device, and ensures the stable installation and precise position relationship of subsequent components. A steering gear mounting plate (4) is fixed to the connector (2) by means of firm bolts. A gasket (8) is provided between the steering gear mounting plate (4) and the connector (2). The function of the gasket (8) is to adjust and ensure the installation accuracy and stability of the steering gear mounting plate (4) to prevent the performance of the device from being affected by factors such as installation errors or vibrations. A mirror cover (5) is installed at the front end of the steering gear mounting plate (4). The mirror cover (5) not only protects the internal optical components, but also optimizes the light propagation environment and reduces the influence of external interference on laser transmission. Servo gears (3) are installed on both sides of the servo gear installation plate (4). The servo gear (3) is a key power component for controlling the direction of the reflector (7), and its internal output shaft is tightly connected to the reflector (7). During the medical beauty process, the servo gear (3) can accurately control the direction of the reflector (7) according to the instructions of the controller, thereby realizing accurate adjustment of the depth of laser irradiation on the skin. By changing the angle of the reflector (7), the laser can be irradiated onto the skin at different angles and paths, meeting the needs of treating skin tissues at different depths, and ensuring that the laser energy can accurately act on the target skin layer. An ultrasonic sensor (6) is arranged in the middle of the steering gear mounting plate (4). The ultrasonic sensor (6) has important responsibilities for detection and feedback in the device. It can keenly sense laser spectroscopic signals and transmit these signals to the controller in a timely manner, providing key data support for the subsequent control decision of the controller. A combined lens (9) is fixed inside the gasket (8) at the upper end of the ultrasonic sensor (6). The combined lens (9) further focuses and adjusts the laser after being processed by the spectroscopic device, optimizes the propagation characteristics of the laser, enables it to better act on the skin tissue, and improves the treatment effect. The laser generator is the source of laser energy for the entire device and is responsible for emitting pulsed lasers with specific wavelengths and pulse characteristics. It is closely connected to the controller (assuming it is the control unit 1) and receives control instructions from the controller to ensure that the emission parameters of the laser meet the treatment requirements. During the treatment process, the laser generator accurately generates the required pulsed lasers according to the settings of the controller, providing a stable energy basis for the subsequent photoacoustic effect treatment. The spectrometer is connected to the laser generator and plays a key role in the laser transmission path. The spectrometer can carefully distribute and adjust the wavelength, energy and other parameters of the laser according to the treatment needs, ensuring that the laser has the best treatment performance before entering the subsequent components and acting on the skin. Through the processing of the spectrometer, the laser can better adapt to the needs of different skin layers and treatment areas, improving the pertinence and effectiveness of the treatment. The signal receiving converter plays a key role in information transmission in the device; it is connected to the spectrometer and the controller, and can quickly and accurately receive the laser spectrometer signals, and transmit these signals to the controller in a timely and stable manner; the high precision and high reliability of the signal receiving converter ensure that the controller can obtain key information in the laser processing process in a timely manner, thereby achieving precise control and coordinated work of the entire device, ensuring the smooth progress of the medical cosmetic treatment process and the optimization of the treatment effect.

3. The medical cosmetic method based on photoacoustic effect according to claim 1, characterized in that: When the pulse laser irradiates the skin, the spot area formed on the skin surface can be adjusted within a range of 1-10 square centimeters, which is achieved by a spot area adjustment device provided in the device; the adjustment device is connected to the controller and receives instructions from the controller to change the position or angle of the optical element, thereby changing the spot size; When treating areas with shallow wrinkles and smaller areas, the spot area can be reduced to about 1 square centimeter to concentrate the laser energy more on the target area and enhance the local treatment effect. When treating large areas of sagging skin, the spot area can be increased to 10 square centimeters to improve treatment efficiency and ensure that different skin conditions can receive appropriate laser energy distribution.

4. The medical cosmetic method based on photoacoustic effect according to claim 1, characterized in that: The controller is preset with laser energy and ultrasonic signal output modes for different skin types and conditions, including normal skin, dry skin, oily skin, sensitive skin types, and mild wrinkles, moderate wrinkles, and severe wrinkles conditions; The controller obtains the skin's moisture content, elasticity, and roughness parameter information through the skin detection sensor connected to the device, automatically identifies the skin type and condition, and selects the corresponding preset mode.

5. The medical cosmetic method based on photoacoustic effect according to claim 1, characterized in that: The pulse frequency of the pulse laser emitted by the laser generating device is adjustable within the range of 10-100 Hz. In the early stage of treatment, in order to allow the skin to gradually adapt to the laser stimulation, the pulse frequency can be set at about 10 Hz, so that the skin can produce a mild photoacoustic response at a lower frequency. As the treatment progresses, when the skin's tolerance to the laser increases, the pulse frequency can be increased to 100 Hz to enhance the intensity and frequency of the photoacoustic effect and accelerate the collagen regeneration process. This adjustable pulse frequency design can be flexibly adjusted according to the patient's treatment stage and skin reaction, thereby improving the treatment effect and safety.

6. The medical cosmetic device based on photoacoustic effect according to claim 2, characterized in that: The steering gear mounting plate (4) is made of an aluminum alloy material, which has good strength and heat dissipation performance. During the long-term operation of the device, the heat generated by the steering gear (3) and the heat that may be generated during the laser transmission process can be quickly dissipated through the steering gear mounting plate (4) made of the aluminum alloy material, thereby preventing heat accumulation from affecting the performance of electronic components and optical components inside the device. At the same time, the high strength characteristics of the aluminum alloy ensure that the steering gear mounting plate (4) will not deform when subjected to the vibration and operating force of the steering gear (3), thereby ensuring the position accuracy and stability of the reflector (7), thereby ensuring the precise adjustment of the laser irradiation depth.

7. The medical cosmetic device based on photoacoustic effect according to claim 2, characterized in that: The surface of the reflector (7) is coated with multiple layers of optical thin films, including an anti-reflection film and a reflective film; the anti-reflection film can effectively reduce the reflection loss of the laser on the surface of the reflector (7), improve the transmittance of the laser, and enable more laser energy to be irradiated onto the skin; the reflective film can accurately control the reflection angle and direction of the laser, ensuring that when the steering gear (3) adjusts the reflector (7), the laser can accurately irradiate the target skin area along the expected path; the design and application of these optical thin films significantly improve the optical performance of the reflector (7), and optimize the transmission and effect of the laser in the device.

8. The medical cosmetic device based on photoacoustic effect according to claim 2, characterized in that: The ultrasonic sensor (6) has an automatic calibration function and is provided with a calibration chip therein; a calibration operation is performed periodically when the device is started and during operation, and the sensitivity and frequency response characteristics of the ultrasonic sensor (6) are automatically adjusted by transmitting and receiving ultrasonic signals of known frequency and intensity and comparing them with a preset standard; this ensures that the ultrasonic sensor (6) always maintains high-precision detection performance, accurately receives laser spectroscopic signals and reliably transmits them to the controller, thereby ensuring the accuracy of the control and coordinated work of the entire device and improving the reliability of medical cosmetic treatment.

9. The medical cosmetic device based on photoacoustic effect according to claim 2, characterized in that: The combined lens (9) is composed of optical lenses with different refractive indices, and its focal length is adjustable within the range of 10-50 mm. By adjusting the focal length of the combined lens (9), the focal depth and spot size of the laser can be changed to meet the treatment requirements of skin tissues at different depths. When treating the surface layer of the skin, the focal length can be adjusted to about 10 mm, so that the laser forms a smaller spot and a stronger energy density on the surface layer of the skin. When treating deep skin tissue, the focal length is adjusted to 50 mm to ensure that the laser can be accurately focused at the target depth, so as to give full play to the therapeutic effect of the photoacoustic effect at different skin layers.

10. The medical cosmetic device based on photoacoustic effect according to claim 2, characterized in that: A detachable connection structure, such as a snap connection or a threaded connection, is used between the connector (2) and the beauty instrument body (1); when a component inside the device fails or needs to be upgraded, the internal component can be quickly inspected, replaced or debugged by simply removing the connector (2).

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