High-safety fat melting method and system and storage medium

Abstract

The invention discloses a high-safety fat melting method and system and a storage medium. The fat melting method comprises the steps that human body surface data are collected, a three-dimensional surface model is constructed, reflection characteristics, textures, red skin surface temperature and fitting degree data are fused, and an illumination forbidding area is automatically marked; the laser is shaped by the integral rod and the micro lens array and then is projected into a surface illumination light beam by the DMD, and surface illumination dose homogenization is realized according to geometric registration and curvature compensation; a target area is divided into sub-areas, the time sequence effect is staggered, and active cooling is executed between operation. The system adopts an inner-middle-outer three-ring closed loop, the skin surface temperature and the heating rate are limited, the fat layer temperature and the heat dose are estimated according to the skin surface temperature on the basis of a histothermal model, and shading, turn-off and alarm are triggered when abnormity occurs. According to the invention, the risks of mistaken illumination and thermal damage are reduced, the energy delivery consistency is improved, and the method is suitable for medical / household beauty equipment.

Description

Technical Field

[0001] This invention relates to the field of non-invasive human tissue heating / fat reduction technology, belonging to the optical and control technology of medical / home beauty devices. More specifically, it relates to a highly safe fat melting method, system, and storage medium utilizing a programmable digital micromirror array and multi-sensor closed-loop temperature control. Background Technology

[0002] With societal development, people's demands for their physique and health are increasing. Non-invasive liposuction technology, due to its advantages such as minimal trauma and short recovery period, has gradually become the mainstream choice. However, traditional liposuction techniques cannot identify areas of the skin that are in an unsuitable state for liposuction in practical applications, relying solely on manual identification. This method is prone to missing certain areas, leading to misapplication of laser energy into these areas, ultimately causing damage and seriously affecting the safety of the liposuction process, failing to meet users' needs for treatment safety.

[0003] Therefore, designing a fat-dissolving method, system, and storage medium that can accurately identify normal and special areas of the skin and actively avoid the special areas has become an urgent problem to be solved in this field. Summary of the Invention

[0004] The purpose of this invention is to overcome the problem that existing fat-dissolving technologies cannot accurately identify normal and special areas of the skin, thereby causing damage to the special areas, and to provide a highly safe fat-dissolving method, system and storage medium.

[0005] The objective of this invention is mainly achieved through the following technical solutions: This invention provides a highly safe method for fat melting, comprising the following steps: Collect human body surface data and construct a three-dimensional model of the body surface; Acquire one or more data points from skin surface reflectivity, skin surface texture, skin surface temperature, and skin adhesion. Based on the acquired data, divide the three-dimensional model of the body surface into areas to be melted and areas to be protected from light. The laser is used to melt the fat in the area to be melted, while shielding the restricted areas from irradiation.

[0006] Furthermore, the three-dimensional model of the body surface is divided into areas to be treated with fat and areas to be protected from light, including: By using optical sensors to detect the multispectral reflectance properties of the skin surface, areas with abnormal reflectance properties and / or areas with abnormal pigmentation can be identified. And / or detect the skin surface temperature distribution using an infrared sensor to identify areas of abnormal temperature; And / or use feature extraction algorithms to extract skin texture features and locate low-texture areas; And / or detect the skin fit using pressure sensors or tilt sensors, and mark areas of poor fit; Areas with abnormal reflectivity, abnormal pigmentation, abnormal temperature, low texture, and poor fit are marked as forbidden areas and mapped to the corresponding areas of the 3D model of the body surface.

[0007] Furthermore, a digital micromirror array is used to shield the restricted areas from irradiation by the liposuction laser.

[0008] Furthermore, the fat-reducing procedure using a fat-reducing laser to treat the area includes the following steps: An integrating bar is used to perform preliminary homogenization and energy mixing on the liposuction laser beam to obtain a transition beam. A beam decomposition of the transition beam is performed using a microlens array to obtain an approximately flat-top beam. A digital micromirror array is used to perform dynamic homogenization and geometric calibration on an approximately flat-top beam to obtain a face beam with uniform face illumination dose. The surface illumination beam is obtained by performing geometric registration and curvature compensation based on the surface curvature using a three-dimensional model of the body surface. Use the target area beam to perform degreasing operations on the area to be degreased.

[0009] Furthermore, using a target surface beam to perform degreasing operations on the area to be degreased also includes the following steps: Divide the area to be melted into several sub-regions; By using a preset interval, non-adjacent sub-regions are selected as the current sub-region, and the target surface beam is used to perform degreasing operations on the current sub-region. After the first round of degreasing is completed, the current sub-region is cooled down. After cooling to a safe threshold, select non-adjacent sub-regions from the remaining sub-regions to be processed as new current sub-regions for degreasing and cooling. Repeat the steps of selecting the current sub-region, performing the melting operation, and cooling the process until all sub-regions have completed the melting operation.

[0010] Furthermore, the fat melting method also includes real-time monitoring and adjustment of fat melting operation safety indicators when using a fat melting laser to melt the area to be melted. The fat melting operation safety indicators include fat layer temperature, fat layer heat dose, skin surface temperature, skin surface heating rate and equipment operating status. When abnormal safety indicators are detected during the grease melting operation, the equipment will automatically shut down and issue an alarm.

[0011] Furthermore, a three-ring stratified temperature control system is used to dynamically monitor and adjust the safety indicators of the grease melting operation.

[0012] Furthermore, the three-ring layered temperature control system includes an inner ring, a middle ring, and an outer ring three-layer temperature control response mechanism; The inner ring has a response period of 3 to 5 milliseconds and dynamically adjusts the laser energy duty cycle of the fat-dissolving laser through the beam modulator to limit the skin surface temperature and skin surface heating rate in the fat-dissolving area to a preset safe range. The central ring dynamically adjusts the cooling temperature and range of the melting area with a response cycle of 0.5 to 1 second, so that the heat accumulation of the fat layer is within the preset safe range. The outer ring monitors the safety indicators of the grease melting operation in real time. When an abnormality is detected in the safety indicators of the grease melting operation, the grease melting laser is blocked, the equipment is automatically shut down, and an alarm is issued.

[0013] Furthermore, the central ring system dynamically adjusts the cooling temperature and cooling range of the grease melting area through a cooler.

[0014] Furthermore, the steps for monitoring safety indicators during grease melting operations on the outer ring road include: The thermal parameters of human tissue are obtained and then assigned to the three-dimensional model of the body surface to obtain the thermal model of human tissue. Skin surface temperature is monitored using an infrared temperature sensor; By assigning skin surface temperature to the human tissue thermal model, the fat layer temperature and fat layer heat dose are calculated. The skin surface temperature is collected in real time at different time points, and the skin surface temperature rise rate is calculated. The equipment's operating status is monitored through a fault monitor.

[0015] A highly safe fat-dissolving system, comprising: The laser delivery unit includes a laser emission source for emitting laser light, an integrating bar for performing preliminary homogenization and energy mixing processing on the laser light, a microlens array for performing beam decomposition on the laser light, and a digital microlens array for performing dynamic homogenization and geometric calibration processing on the laser light. The sensing unit includes components configured to collect human body surface data and configured to acquire skin surface reflectivity, skin surface texture, skin surface temperature, and skin adhesion. The cooling unit includes a cooler and a light-emitting transparent window coupled to the cooler.

[0016] Furthermore, the fat-dissolving system also includes: The control unit is configured to perform geometric registration and curvature compensation of the surface illumination beam based on the three-dimensional model of the body surface, generate a surface illumination mask, and fuse multi-sensor data to shield the forbidden area; It is configured to adjust the laser duty cycle via the inner ring and adjust the cooling temperature and cooling time via the middle ring; It is configured to monitor the safety indicators of the grease melting operation in real time through the outer ring, and to perform a safety interlock of light blocking, shutdown and alarm when abnormal safety indicators of the grease melting operation are detected.

[0017] A highly secure storage medium containing instructions that, when invoked by a processor, are used to execute the aforementioned degreasing method.

[0018] In summary, the present invention has the following advantages compared with the prior art: This solution constructs a three-dimensional model of the body surface, providing a precise spatial basis for region identification. Combined with multi-dimensional analysis of reflectance spectrum, skin texture, and infrared temperature, it accurately marks areas with abnormal reflectance characteristics, abnormal pigmentation (such as tattoos and moles), abnormal temperature (such as areas of skin inflammation), low-texture areas (such as scars and navels), and poor adhesion (such as skin folds and areas with dense hair) as prohibited areas for laser treatment. Compared to traditional manual identification, this not only avoids the risk of missed detection due to subjective judgment but also achieves automated and standardized positioning of special areas, eliminating the possibility of laser mis-applying to sensitive areas from the source and meeting users' safety needs during liposuction treatment.

[0019] Furthermore, by constructing a three-dimensional model of the body surface and performing geometric registration and curvature compensation on the DMD, the problem of uneven energy distribution in traditional spot scanning methods can be solved, effectively improving the uniformity and accuracy of fat melting. By monitoring the safety indicators and equipment operating status of fat melting operations through the outer ring, adjusting the skin surface temperature and heating rate based on monitoring data through the inner ring, and adjusting the fat layer temperature and heat dose based on monitoring data through the middle ring, the risk of epidermal burns and overheating can be effectively reduced. By identifying and automatically shielding areas with abnormal reflectivity, abnormal pigmentation, low texture, and / or poor adhesion, the probability of false exposure to sensitive areas can be reduced. Attached Figure Description

[0020] The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and form part of this application, do not constitute a limitation thereof. In the drawings: Figure 1 A flowchart illustrating the steps of the high-safety grease melting method provided by this invention; Figure 2 This invention provides a flowchart of the first step in performing a degreasing operation on the area to be degreased. Figure 3 This is a flowchart of the second step of the degreasing operation on the area to be degreased, as provided by the present invention. Figure 4 The diagram shows the structure of the high-safety grease melting system provided by this invention. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of the present invention are only used to explain the present invention and are not intended to limit the present invention.

[0022] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0024] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0025] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0026] Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of the present invention.

[0027] In the following description, suffixes such as "module," "part," "component," or "unit" are used only for the purpose of illustrative purposes and have no specific meaning in themselves. Therefore, they can be used interchangeably.

[0028] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings.

[0029] Firstly, according to an embodiment of the present invention, such as Figure 1 As shown, a highly safe fat melting method includes the following steps: Collect human body surface data and construct a three-dimensional model of the body surface; Acquire one or more data points from skin surface reflectivity, skin surface texture, skin surface temperature, and skin adhesion. Based on the acquired data, divide the three-dimensional model of the body surface into areas to be melted and areas to be protected from light. The laser is used to melt the fat in the area to be melted, while shielding the restricted areas from irradiation.

[0030] In this embodiment, human body surface data can be acquired using existing conventional technologies, including but not limited to ToF cameras, millimeter-wave radar, structured light scanners, and laser scanners. In this embodiment, a ToF depth camera with a resolution of 640×480 (hereinafter referred to as a ToF camera) is preferred. This ToF camera collects human body surface data, which is then assigned to a 3D modeling algorithm (such as Poisson reconstruction algorithm or marching cubes algorithm) to construct a 3D model of the body surface. Then, one or more data points are acquired from the human body surface, including skin surface reflectance characteristics, skin texture, skin surface temperature, and skin adhesion. One or more of the following parameters are then assigned to the 3D model of the body surface: high reflectance parameter regions, low reflectance parameter regions, abnormal pigmentation regions (such as regions corresponding to tattoos and moles), low texture feature parameter regions (such as regions corresponding to scars and tattoos), abnormal skin surface temperature parameter regions (such as regions corresponding to skin inflammation and wounds), and regions with substandard skin adhesion (such as regions corresponding to skin wrinkles and dense hair). These regions are then divided into areas that do not meet the standards and marked as prohibited areas. The remaining regions that meet the standards are designated as prohibited areas. The area within the normal range of skin parameters is marked as the area to be treated with fat reduction. The "prohibited area" and the "area to be treated" refer to the areas that need to be shielded and the areas that can be irradiated, determined by comparing information such as skin surface reflectivity, skin texture, skin surface temperature, and skin adhesion, and then according to preset thresholds for each of these parameters, while simultaneously following preset masking logic. The aforementioned thresholds include criteria such as high reflectivity not exceeding 35%, low reflectivity not less than 15%, skin surface temperature not exceeding 42°C, and skin surface heating rate not exceeding 0.8°C / s as the basis for defining the prohibited and treated areas. Then, a fat reduction laser is used to treat the area to be treated, while shielding the prohibited areas from irradiation. It should be noted that the preset values ​​mentioned above are typical configurations for this embodiment and can be adjusted within a safe range in actual applications, and are not intended to limit the invention.

[0031] In this embodiment, the method constructs a three-dimensional model of the body surface to provide a precise spatial carrier for region identification. Combined with multi-dimensional analysis such as reflectivity, skin texture, and infrared temperature, areas with abnormal reflectivity (including high reflectivity and low reflectivity), areas with abnormal pigmentation (such as tattoos and moles), areas with abnormal temperature (such as areas with skin inflammation), areas with low texture (such as scars and navels), and areas with poor adhesion (such as skin folds and areas with dense hair) are accurately marked as prohibited areas for laser treatment. Compared with traditional manual identification, this method not only avoids the risk of missed identification caused by subjective judgment, but also realizes the automated and standardized positioning of special areas, eliminating the possibility of laser mis-acting on sensitive areas from the source, and meeting the user's safety needs during liposuction treatment.

[0032] In one possible implementation, dividing the three-dimensional body surface model into areas to be treated with fat and areas to be protected from light includes: By using optical sensors to detect the multispectral reflectance properties of the skin surface, areas with abnormal reflectance properties and / or areas with abnormal pigmentation can be identified. And / or detect the skin surface temperature distribution using an infrared sensor to identify areas of abnormal temperature; And / or use feature extraction algorithms to extract skin texture features and locate low-texture areas; And / or detect the skin fit using pressure sensors or tilt sensors, and mark areas of poor fit; Areas with abnormal reflectivity, abnormal pigmentation, abnormal temperature, low texture, and poor fit are marked as forbidden areas and mapped to the corresponding areas of the 3D model of the body surface.

[0033] In this embodiment, the optical sensor used is a multispectral sensor. It collects the reflectance spectrum signal from the skin surface and analyzes the intensity and spectral distribution of reflected light in different areas to obtain spectral reflectance characteristic data of the skin surface. Areas with reflectance higher than 35% are identified as high-reflectance areas, and areas with reflectance lower than 15% are identified as low-reflectance areas. Simultaneously, areas whose reflectance spectra deviate from the standard spectrum of normal skin are identified as pigmentation abnormalities, typically corresponding to tattoos, moles, or other special locations. An infrared sensor detects the skin surface temperature distribution, identifying areas with temperatures exceeding 37°C as temperature abnormalities, typically indicating inflammatory areas such as folliculitis or contact dermatitis. Skin texture features are extracted using the gray-level co-occurrence matrix algorithm and the LBP (Local Binary Pattern) algorithm, and parameters such as texture uniformity and contrast are calculated. Regions with texture feature parameters below 8 are designated as low-texture areas, often including areas with abnormal skin structures such as scars and the navel. Skin adhesion is detected using pressure or tilt sensors, collecting pressure values ​​and contact angle data between the device and the skin. Regions with pressure values ​​below 5N are marked as first-stage poor-adhesion areas, and regions with tilt angle deviations exceeding 5° are designated as second-stage poor-adhesion areas. These areas may experience unstable device adhesion due to skin folds or dense hair, leading to uneven energy projection or burn risks. Then, the aforementioned high-reflectivity areas, low-reflectivity areas, pigmentation abnormalities, temperature abnormalities, low-texture areas, first-stage poor-adhesion areas, and second-stage poor-adhesion areas are marked as forbidden areas and mapped to their corresponding spatial locations on the body surface 3D model. This provides clear and accurate spatial coordinates for subsequent shielding of the liposuction laser. It should be noted that the preset values ​​described above are typical configurations for this embodiment and can be adjusted according to the user's actual skin condition and on-site examination in practical applications. This does not limit the invention.

[0034] In one possible implementation, the irradiation of the liposuction laser on the restricted area is shielded by a digital micromirror array.

[0035] In this embodiment, the core of the digital micromirror array (DMD) consists of multiple independently flippable 10.8μm aluminum micromirror units, using DLP650LNIR or DLP4500NIRDMD chips, supporting up to 8000Hz binary modulation, and able to switch between "reflection output" and "absorption shielding" states to accurately respond to regional shielding requirements.

[0036] When the liposuction laser is projected onto the DMD chip, the system uses the coordinates of the forbidden area in the 3D model of the body surface to generate a "forbidden area mask". It then sends instructions to the micromirror units within the mask to flip them to the corresponding shielding angle that can reflect the laser, preventing the forbidden area from being irradiated. Meanwhile, the micromirrors in the area to be liposuction maintain the angle of reflection output, allowing the laser to still be accurately projected onto the area to be liposuction for the liposuction operation. This approach ensures that the forbidden area is not irradiated while also ensuring uniform laser energy in the area to be liposuction, reducing the risk of skin damage.

[0037] In one possible implementation, such as Figure 2 As shown, the process of using a liposuction laser to perform liposuction on the area to be liposuction includes the following steps: An integrating bar is used to perform preliminary homogenization and energy mixing on the liposuction laser beam to obtain a transition beam. A beam decomposition of the transition beam is performed using a microlens array to obtain an approximately flat-top beam. A digital micromirror array is used to perform dynamic homogenization and geometric calibration on an approximately flat-top beam to obtain a face beam with uniform face illumination dose. The surface illumination beam is obtained by performing geometric registration and curvature compensation based on the surface curvature using a three-dimensional model of the body surface. Use the target area beam to perform degreasing operations on the area to be degreased.

[0038] In this embodiment, the 1060nm semiconductor laser module is first activated to output a melting laser, which initially enters an integrating rod. The integrating rod performs preliminary homogenization and energy mixing of the laser beam through multiple reflections, breaking the original uneven energy distribution and transforming the initial beam into a transition beam with a relatively smooth energy distribution, laying the foundation for further homogenization. Next, the transition beam is incident on a microlens array (MLA), a chip composed of multiple microlens units that can decompose the transition beam into several sub-beams. By precisely controlling the propagation direction and energy proportion of each sub-beam, they are ultimately synthesized into an approximately flat-top beam with a uniform energy distribution, effectively eliminating brightness hotspots and ensuring preliminary spatial homogenization of the laser energy.

[0039] Subsequently, the near-flat-top beam is projected onto a digital micromirror array (DMD). Based on a previously constructed 3D model of the body surface, the DMD chip performs dynamic homogenization and calibration operations at a high-speed binary modulation frequency of up to 8000Hz. Specifically, the DMD uses periodic multi-pattern dithering and error diffusion algorithms to achieve a secondary uniform distribution of beam energy in the time dimension within a set N modulation cycle, further reducing the variance of the surface illumination dose in the target area. Simultaneously, the DMD combines the surface curvature data from the 3D model to perform geometric registration of the beam, ensuring that the beam projection angle matches the surface curvature, ultimately generating a surface illumination beam with uniform surface illumination dose and precise spatial projection.

[0040] In this embodiment, the facial radiation dose (J / cm²) 2 (This refers to the energy received per unit area at a surface element or pixel). Furthermore, geometric registration and curvature compensation of the illumination beam include meshing the 3D model of the body surface, calculating the rigid body transformation from the DMD projection coordinate system to the perception coordinate system, and performing lens distortion correction; calculating oblique incidence scaling and edge weights for each surface element based on the mesh normals, completing the projection geometric registration and curvature compensation, and mapping the DMD pixel duty cycle to the surface illumination dose of the skin mesh.

[0041] In one possible implementation, such as Figure 3 As shown, the degreasing operation on the area to be degreased using a target surface beam also includes the following steps: Divide the area to be melted into several sub-regions; By using a preset interval, non-adjacent sub-regions are selected as the current sub-region, and the target surface beam is used to perform degreasing operations on the current sub-region. After the first round of degreasing is completed, the current sub-region is cooled down. After cooling to a safe threshold, select non-adjacent sub-regions from the remaining sub-regions to be processed as new current sub-regions for degreasing and cooling. Repeat the steps of selecting the current sub-region, performing the melting operation, and cooling the process until all sub-regions have completed the melting operation.

[0042] In this embodiment, based on the previously constructed three-dimensional model of the body surface, and considering the skin curvature, fat layer thickness distribution, and energy uniformity requirements, the area to be liposuctioned is divided into several sub-regions of similar size. A small transition zone is reserved between adjacent sub-regions to prevent heat accumulation through conduction during subsequent operations. In this embodiment, the sub-regions are divided into 1.8cm × 1.8cm areas. This size avoids excessive local temperature rise caused by an excessively large single irradiation area while ensuring operational efficiency.

[0043] The preset interval distance between non-adjacent sub-regions is 2-3 mm. In this embodiment, a 3 mm interval distance is preferred as the selection criterion. After segmentation, the system will prioritize non-adjacent sub-regions as the first round of current sub-regions and activate the target surface beam to perform fat melting operations on these sub-regions. During the operation, the skin surface temperature and temperature rise rate of the current sub-region are monitored in real time through infrared thermal imaging and contact temperature sensors to ensure that the skin surface temperature does not exceed 42℃ and the temperature rise rate is controlled within 0.8℃ / s. At the same time, the fat layer temperature is estimated based on the tissue thermal model and maintained in the effective fat melting range of 45℃-47℃.

[0044] After the first round of fat melting is completed, the cooling system is immediately activated to cool the treated sub-area. The cooling system releases cold air through a transparent window's TEC or liquid cooling system, quickly removing residual heat from the skin surface of the sub-area until the skin temperature drops to a safe range below 37°C. In this embodiment, the preferred safe threshold for skin temperature is 36°C.

[0045] After the first sub-region has cooled to the required temperature, a non-adjacent sub-region is selected from the remaining unprocessed sub-regions as the new current sub-region, and the above degreasing process is repeated. After the process is completed, cooling is also performed. This cycle is repeated, with all sub-regions undergoing staggered degreasing and cooling until all sub-regions have completed the degreasing process. This staggered operation and instant cooling method avoids the risk of damage caused by prolonged heating of the same area and prevents heat accumulation in adjacent areas, further ensuring the safety and uniformity of energy application during the degreasing process. It should be noted that the preset values ​​for grid division and spacing are typical configurations in this embodiment and can be adjusted according to actual conditions in practical applications, and are not intended to limit the invention.

[0046] In one possible implementation, the fat melting method also includes real-time monitoring and adjustment of fat melting operation safety indicators when using a fat melting laser to melt the area to be melted. The fat melting operation safety indicators include fat layer temperature, fat layer heat dose, skin surface temperature, skin surface heating rate, and equipment operating status. When abnormal safety indicators are detected during the grease melting operation, the equipment will automatically shut down and issue an alarm.

[0047] In one possible implementation, a three-ring stratified temperature control system is used to dynamically monitor and adjust the safety indicators of the grease melting operation.

[0048] In one possible implementation, the three-ring layered temperature control system includes an inner ring, a middle ring, and an outer ring three-layer temperature control response mechanism; The inner ring has a response period of 3 to 5 milliseconds and dynamically adjusts the laser energy duty cycle of the fat-dissolving laser through the beam modulator to limit the skin surface temperature and skin surface heating rate in the fat-dissolving area to a preset safe range. The central ring dynamically adjusts the cooling temperature and range of the melting area with a response cycle of 0.5 to 1 second, so that the heat accumulation of the fat layer is within the preset safe range. The outer ring monitors the safety indicators of the grease melting operation in real time. When an abnormality is detected in the safety indicators of the grease melting operation, the grease melting laser is blocked, the equipment is automatically shut down, and an alarm is issued.

[0049] In this embodiment, the inner ring continuously receives skin surface temperature and temperature rise rate data from infrared thermal imaging with a fixed response period of 5 milliseconds. Once the system detects that the skin surface temperature in a certain area is approaching the safe upper limit of 42°C, or that the temperature rise rate is trending towards exceeding 0.8°C / s, it immediately sends a command to the beam modulator to dynamically reduce the duty cycle of the corresponding micromirror unit, decreasing laser energy output until the temperature and temperature rise rate return to the safe range. In this embodiment, the beam modulator is one of a digital micromirror array, a laser current driver, or an electro-optic modulator; this invention preferably uses a digital micromirror array (DMD). The middle ring analyzes the fat layer thermal dose data calculated by the tissue thermal model every second. If it detects that the fat layer heat accumulation exceeds a preset range, it adjusts the cooling power and operating range to precisely control the temperature and prevent overheating of the fat layer. The outer ring conducts a comprehensive real-time check on all safety indicators of the fat melting operation, including fat layer temperature, heat dosage, skin surface condition, and equipment operating parameters. If any abnormal indicator is detected, such as skin surface temperature exceeding 42°C, fat layer temperature exceeding 47°C, or signs of equipment detachment from the skin, the light shield will be immediately triggered to close and block the laser. At the same time, the power supply to the equipment will be cut off and an audible and visual alarm will be activated to terminate the dangerous operation in a timely manner.

[0050] In this embodiment, the preset safe range for skin surface temperature is 28~42℃, the preset safe range for skin surface heating rate is within 0.8℃ / s, the preset safe range for fat layer temperature is determined by pre-calibration for different body parts, and the preset safe range for fat layer heat dose is determined by calibration based on tissue tolerance threshold. It should be noted that the above preset values ​​are typical configurations for this embodiment and can be adjusted within the safe range in actual applications, and are not intended to limit the invention.

[0051] In this embodiment, the system is equipped with multi-level interlocks. Specifically, it immediately cuts off the power when the light shield is not closed or the pressure sensor has not reached the threshold; it immediately reduces the laser power or directly shuts off the laser and triggers an alarm when skin separation, slippage, or out-of-bounds posture is detected; it immediately shuts off the laser and performs skin surface cooling when abnormal hot spots, excessively rapid heating, or sensor mismatch are detected; and it immediately uses hardware limiting and dual relays to force the laser to shut off when abnormal power is detected. Throughout the fat melting process, key process data such as timestamps, mask data, peak temperature, and reasons for shutdown are recorded for auditing and compliance documentation.

[0052] In one possible implementation, the central ring dynamically adjusts the cooling temperature and cooling range of the grease melting area through a cooler.

[0053] In this embodiment, the cooler used by Zhonghuan is a TEC thermoelectric cooler or a liquid cooler. The cooler is closely matched with the light-emitting transparent window (with a 1060nm anti-reflection coating) on ​​the contact surface of the equipment to ensure that the cooling effect reaches the melting area directly.

[0054] In one possible implementation, the steps for monitoring safety indicators during grease melting operations on the outer ring include: The thermal parameters of human tissue are obtained and then assigned to the three-dimensional model of the body surface to obtain the thermal model of human tissue. Skin surface temperature is monitored using an infrared temperature sensor; By assigning skin surface temperature to the human tissue thermal model, the fat layer temperature and fat layer heat dose are calculated. The skin surface temperature is collected in real time at different time points, and the skin surface temperature rise rate is calculated. The equipment's operating status is monitored through a fault monitor.

[0055] In this embodiment, the thermal conductivity, specific heat capacity, and other parameters of the skin and fat layer of different parts of the human body are obtained through previous clinical data and phantom experiments. These parameters are then assigned to each grid cell of the three-dimensional model of the body surface to construct a human tissue thermal model that conforms to the real physiological characteristics of the human body. The human tissue thermal model uses the tissue heat conduction equation to establish a mapping between the temperature field of the skin surface and the fat layer, and estimates the fat layer temperature and fat layer heat dose (such as equivalent heat exposure) accordingly.

[0056] In this embodiment, the fault monitor continuously monitors the operating status of each core component of the equipment, including the power output of the laser module, the micromirror flipping accuracy of the DMD chip, the cooling efficiency of the cooling system, and the contact detection data of the pressure sensor. If abnormal fluctuations in laser power, DMD response delay, insufficient cooling power, or signs of equipment detachment are detected, the system will immediately feed back the abnormal signal to the outer loop control system, providing a basis for subsequent safety measures.

[0057] Secondly, such as Figure 4 As shown, this application also provides a highly safe degreasing system for implementing the above-mentioned degreasing method, comprising: The laser delivery unit includes a laser emission source for emitting laser light, an integrating bar for performing preliminary homogenization and energy mixing processing on the laser light, a microlens array for performing beam decomposition on the laser light, and a digital microlens array for performing dynamic homogenization and geometric calibration processing on the laser light. The sensing unit includes components configured to collect human body surface data and configured to acquire skin surface reflectivity, skin surface texture, skin surface temperature, and skin adhesion. The cooling unit includes a cooler and a light-emitting transparent window coupled to the cooler.

[0058] In this embodiment, after the system starts, the laser delivery unit first outputs a fat-dissolving laser through a 1060nm laser emitter. The laser sequentially enters an integrating rod for initial homogenization and energy mixing, breaking the initial energy inhomogeneity of the beam. It is then decomposed into several sub-beams by a microlens array and synthesized into an approximately flat-top beam. This flat-top beam is then projected onto a digital micromirror array (DMD). The DMD performs dynamic homogenization and geometric calibration based on modeling data from the subsequent sensing unit. Simultaneously, the laser delivery unit's output end forms a stray beam elimination structure through a blackened absorption cavity and a finite numerical aperture, suppressing off-axis reflections. The sensing unit operates synchronously, acquiring surface data via a ToF camera and / or millimeter-wave radar to construct a three-dimensional model of the body surface; monitoring skin temperature distribution in real time via an infrared sensor; and detecting the fit between the device and the skin via a pressure sensor or tilt sensor. If it is necessary to assist in identifying restricted areas, a texture camera can also collect skin surface feature data. The cooling unit works in conjunction with a cooler (TEC or liquid cooling module) through a transparent window with a 1060nm antireflection coating to cool the skin surface during laser treatment. The contact surface material meets biocompatibility standards to ensure safety when in contact with the skin. All units work together to provide stable laser output, accurate sensing data and reliable temperature control for the fat melting operation.

[0059] In one possible implementation, the grease-dissolving system also includes: The control unit is configured to perform geometric registration and curvature compensation of the surface illumination beam based on the three-dimensional model of the body surface, generate a surface illumination mask, and fuse multi-sensor data to shield the forbidden area; It is configured to adjust the laser duty cycle via the inner ring and adjust the cooling temperature and cooling time via the middle ring; It is configured to monitor the safety indicators of the grease melting operation in real time through the outer ring, and to perform a safety interlock of light blocking, shutdown and alarm when abnormal safety indicators of the grease melting operation are detected.

[0060] In this embodiment, the control unit first receives the three-dimensional model data of the body surface transmitted by the sensing unit. Based on this model, it solves the rigid body transformation from the projection coordinate system of the Digital Micromirror Array (DMD) to the sensing coordinate system and corrects the lens group distortion. Simultaneously, it calculates the scaling factor by combining the curvature of each surface element of the body surface, completes geometric registration and curvature compensation, and then generates a facial mask. During this process, the control unit integrates one or more data from skin surface reflection characteristics, skin surface texture, skin surface temperature, and skin adhesion to determine the range of forbidden areas. The forbidden area information is integrated into the facial mask to achieve automatic shielding of the forbidden areas. During the fat melting operation, the control unit operates according to a three-loop control logic: the inner loop dynamically adjusts the laser energy duty cycle of the DMD to limit the skin surface temperature and temperature rise rate; the middle loop adjusts the cooling temperature and cooling time of the cooling unit to control the heat accumulation of the fat layer; and the outer loop monitors the safety indicators of the fat melting operation in real time. When abnormal indicators are detected (such as skin separation, excessive temperature, equipment failure, etc.), the control unit immediately triggers the safety interlock mechanism, performs a light-shielding operation, cuts off the laser output and equipment power, and issues an audible and visual alarm. At the same time, the control unit stores anonymized key process data (such as timestamps, mask information, temperature data, reasons for shutdown, etc.) throughout the process for compliance audits, ensuring precise control and safety and reliability of the entire grease melting process.

[0061] Thirdly, this application also provides a highly secure storage medium containing instructions that, when invoked by a processor, are used to execute the aforementioned degreasing method.

[0062] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A highly safe method for liposuction, characterized in that, Includes the following steps: Collect human body surface data and construct a three-dimensional model of the body surface; Acquire one or more data points from skin surface reflectivity, skin surface texture, skin surface temperature, and skin adhesion; and based on the acquired data, divide the three-dimensional model of the body surface into areas to be melted and areas to be protected from light. The laser is used to melt the fat in the area to be melted, while shielding the restricted areas from irradiation.

2. The highly safe fat melting method according to claim 1, characterized in that, The three-dimensional body surface model is divided into areas to be treated with fat and areas to be protected from light, including: By using optical sensors to detect the multispectral reflectance properties of the skin surface, areas with abnormal reflectance properties and / or areas with abnormal pigmentation can be identified. And / or detect the skin surface temperature distribution using an infrared sensor to identify areas of abnormal temperature; And / or use feature extraction algorithms to extract skin texture features and locate low-texture areas; And / or detect the skin fit using pressure sensors or tilt sensors, and mark areas of poor fit; The regions with abnormal reflectivity, abnormal pigmentation, abnormal temperature, low texture, and poor fit are marked as forbidden areas and mapped onto the corresponding areas of the three-dimensional model of the body surface.

3. The highly safe fat melting method according to claim 1, characterized in that, Digital micromirror arrays are used to shield the forbidden areas from irradiation by the liposuction laser.

4. The highly safe fat melting method according to claim 1, characterized in that, The procedure of using a liposuction laser to remove fat from the area to be treated includes the following steps: An integrating bar is used to perform preliminary homogenization and energy mixing on the liposuction laser beam to obtain a transition beam. The transition beam is decomposed using a microlens array to obtain an approximately flat-top beam. The approximate flat-top beam was dynamically homogenized and geometrically calibrated using a digital micromirror array to obtain a face beam with uniform face illumination dose. The target surface illumination beam is obtained by performing geometric registration and curvature compensation based on the surface curvature using the three-dimensional model of the body surface. The target surface beam is used to perform degreasing operations on the area to be degreased.

5. The highly safe fat melting method according to claim 4, characterized in that, Using a target surface beam to perform degreasing operations on the area to be degreased also includes the following steps: The area to be melted is divided into several sub-regions; By using a preset interval, non-adjacent sub-regions are selected as the current sub-region, and the target surface illumination beam is used to perform degreasing operations on the current sub-region. After the first round of degreasing is completed, the current sub-region is cooled down. After cooling to a safe threshold, select non-adjacent sub-regions from the remaining sub-regions to be processed as new current sub-regions for degreasing and cooling. Repeat the steps of selecting the current sub-region, performing the melting operation, and cooling the process until all sub-regions have completed the melting operation.

6. The highly safe fat melting method according to claim 1, characterized in that, The fat melting method also includes real-time monitoring and adjustment of fat melting operation safety indicators when using a fat melting laser to melt the area to be melted. The fat melting operation safety indicators include fat layer temperature, fat layer heat dose, skin surface temperature, skin surface heating rate, and equipment operating status. When the equipment detects an abnormality in the safety indicators of the grease melting operation, it will automatically shut down and issue an alarm.

7. The highly safe fat melting method according to claim 6, characterized in that, A three-ring layered temperature control system is used to dynamically monitor and adjust the safety indicators of the grease melting operation.

8. The highly safe fat melting method according to claim 7, characterized in that, The three-ring layered temperature control system includes an inner ring, a middle ring, and an outer ring three-layer temperature control response mechanism; The inner ring has a response period of 3 to 5 milliseconds and dynamically adjusts the laser energy duty cycle of the fat-dissolving laser through a beam modulator to limit the skin surface temperature and skin surface heating rate in the fat-dissolving area to a preset safe range. The middle ring dynamically adjusts the cooling temperature and cooling range of the fat melting area with a response cycle of 0.5 to 1 second, so that the heat accumulation of the fat layer is within a preset safe range. The outer ring monitors the safety indicators of the grease melting operation in real time. When an abnormality is detected in the safety indicators of the grease melting operation, the grease melting laser is blocked, the equipment is automatically shut down, and an alarm is issued.

9. A highly safe fat melting method according to claim 8, characterized in that, The central ring dynamically adjusts the cooling temperature and cooling range of the grease melting area through a cooler.

10. A highly safe fat melting method according to claim 8, characterized in that, The steps for monitoring safety indicators of the grease melting operation on the outer ring include: The thermal parameters of human tissue are obtained, and the thermal parameters of human tissue are assigned to the three-dimensional model of the body surface to obtain the thermal model of human tissue. Skin surface temperature is monitored using an infrared temperature sensor; The skin surface temperature is assigned to the human tissue thermal model to calculate the fat layer temperature and fat layer heat dose. The skin surface temperature is collected in real time at different time points, and the skin surface temperature rise rate is calculated. The equipment's operating status is monitored through a fault monitor.

11. A highly safe liposuction system, comprising: The laser delivery unit includes a laser emission source for emitting laser light, an integrating bar for performing preliminary homogenization and energy mixing processing on the laser light, a microlens array for performing beam decomposition on the laser light, and a digital microlens array for performing dynamic homogenization and geometric calibration processing on the laser light. The sensing unit includes components configured to collect human body surface data and configured to acquire skin surface reflectivity, skin surface texture, skin surface temperature, and skin adhesion. The cooling unit includes a cooler and a light-emitting transparent window coupled to the cooler.

12. The high-safety grease-dissolving system according to claim 11, characterized in that, The fat melting system also includes: The control unit is configured to perform geometric registration and curvature compensation of the surface illumination beam based on the three-dimensional model of the body surface, generate a surface illumination mask, and fuse multi-sensor data to shield the forbidden area. It is configured to adjust the laser duty cycle through the inner ring and adjust the cooling temperature and cooling time through the middle ring; It is configured to monitor the safety indicators of the grease melting operation in real time through the outer ring, and to perform a safety interlock of light blocking, shutdown and alarm when abnormal safety indicators of the grease melting operation are detected.

13. A highly secure storage medium, characterized in that, The storage medium stores instructions that, when invoked by a processor, are used to execute any one of the methods of claims 1 to 10.

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