Ultrasonic skin tightening device and ultrasonic equipment
The ultrasonic skin tightening device, which monitors skin condition in real time and dynamically adjusts ultrasonic power, solves the problem of balancing safety and treatment effectiveness in existing technologies, achieving a balance between safety and tightening effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-09
- Publication Date
- 2026-04-03
AI Technical Summary
Existing ultrasonic skin tightening devices cannot guarantee safety while ensuring treatment effectiveness. Some users have experienced skin redness, stinging, or even burns, and the tightening effect is not satisfactory.
The system employs a skin condition monitoring module to monitor the user's skin tolerance, thickness, and temperature in real time, dynamically adjusts the ultrasound power through a control module, and ensures safety by combining it with a safety protection module.
It achieves a balance between treatment effectiveness and safety during the treatment process, avoiding skin redness, stinging, and burns, and is suitable for different users' skin conditions and treatment needs.
Smart Images
Figure CN121775355A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of cosmetic technology, specifically to an ultrasonic skin tightening device and ultrasonic equipment. Background Technology
[0002] Ultrasonic skin tightening devices utilize microfocused ultrasound (MFU) technology to precisely deliver external energy to deep skin tissues, creating micro-thermal coagulation points (TCPs) that stimulate collagen contraction and regeneration, achieving three-dimensional anti-aging effects from the dermis to the SMAS fascia layer. However, most ultrasonic skin tightening devices employ a fixed power output design, which can cause skin redness, stinging, or even burning in some users, while others experience poor tightening results. Summary of the Invention
[0003] This invention provides an ultrasonic skin tightening device and ultrasonic equipment to solve the problem that ultrasonic skin tightening devices cannot ensure safety while guaranteeing treatment effectiveness.
[0004] In a first aspect, the present invention provides an ultrasonic skin tightening device, comprising: A skin condition monitoring module, comprising a tolerance detection unit, wherein the tolerance detection unit is used to acquire the tolerance of the user's skin in a target area, the tolerance being determined based on the impedance change of the skin in the target area; Power adjustment module, used to adjust ultrasonic power; A control module is used to control the power adjustment module to adjust the ultrasonic power based on the tolerance level; An ultrasound transmitting module, including a focused ultrasound transducer array, is used to transmit focused ultrasound waves toward the skin of the target area according to the ultrasound power.
[0005] In an optional implementation, the tolerance detection unit is further configured to send a power reduction request to the control module when the impedance change rate of the skin in the target area exceeds a first preset threshold.
[0006] In one optional implementation, the skin condition monitoring module further includes a skin thickness detection unit; The skin thickness detection unit is used to analyze the echo time difference of the skin thickness detection ultrasound to obtain the thickness of the skin in the target area; The control module is used to control the power adjustment module to adjust the ultrasound power based on the tolerance and thickness of the skin in the target area; or, the control module is used to set the initial ultrasound power for the skin in the target area based on the thickness.
[0007] In one optional embodiment, the skin condition monitoring module further includes a temperature detection unit for detecting the temperature of the skin in the target area; The control module is used to control the power adjustment module to adjust the ultrasound power based on the tolerance and temperature of the skin in the target area, or to control the power adjustment module to adjust the ultrasound power based on the tolerance, thickness, and temperature of the skin in the target area.
[0008] In one alternative implementation, the control module incorporates an algorithm for matching ultrasound power with skin condition parameters, which include at least one of tolerance, temperature, and thickness.
[0009] In one optional implementation, the control module adjusts the ultrasonic power based on the current working stage.
[0010] In one optional implementation, the power regulation module includes a power amplification unit, a power detection unit, and a power feedback unit; The power amplification unit uses a laterally diffused metal-oxide-semiconductor as the power amplification device. The power detection unit is used to detect the actual output power of the ultrasonic transmitting module; The power feedback unit is used to feed back the actual output power to the control module; The control module is used to control the power adjustment module to adjust the ultrasonic power when the deviation between the actual output power and the control command power exceeds a second preset threshold.
[0011] In one alternative embodiment, the ultrasonic skin tightening device further includes a safety protection module, which includes an overpower protection unit for cutting off the power supply to the ultrasonic transmitting module when the actual output power of the ultrasonic transmitting module exceeds a third preset threshold.
[0012] In one optional implementation, the safety protection module further includes at least one of an emergency stop unit, an over-temperature protection unit, and a timeout protection unit; The emergency stop unit is used to control the ultrasonic skin tightening device to stop outputting energy; The over-temperature protection unit is used to control the ultrasound emission module to stop outputting energy when the temperature of the skin in the target area exceeds a preset temperature threshold. The timeout protection unit is used to control the ultrasonic emission module to stop outputting energy when the working time for the target area skin exceeds a first time threshold; and to control the ultrasonic skin tightening device to stop outputting energy when the total working time of a single operation of the ultrasonic skin tightening device exceeds a second time threshold.
[0013] In a second aspect, the present invention provides an ultrasound device, including the ultrasound skin tightening device of the first aspect or any corresponding embodiment described above.
[0014] The ultrasonic skin tightening device and ultrasonic equipment provided in this invention can monitor the user's skin tolerance in real time during the process of skin tightening using ultrasound, and then dynamically adjust the ultrasonic power according to the user's skin tolerance, thereby taking into account both treatment effect and safety. Attached Figure Description
[0015] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0016] Figure 1 This is a first structural block diagram of an ultrasonic skin tightening device according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the closed-loop operation of the power regulation module according to an embodiment of the present invention; Figure 3 This is a second structural block diagram of the ultrasonic skin tightening device according to an embodiment of the present invention. Detailed Implementation
[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0018] It is understood that before using the technical solutions disclosed in the various embodiments of the present invention, users should be informed of the types, scope of use, and usage scenarios of the personal information involved in the present invention and their authorization should be obtained in accordance with relevant laws and regulations through appropriate means.
[0019] The parameters (such as power) of ultrasonic skin tightening devices in related technologies cannot be dynamically adjusted according to the actual treatment situation, which will cause various problems. For example, when using fixed power output ultrasound, due to the significant differences in skin tolerance among different users, sensitive skin users are prone to skin redness, stinging or even burns if they use conventional power; while users with higher tolerance find it difficult to achieve the ideal tightening effect when using fixed low power.
[0020] This embodiment provides an ultrasonic skin tightening device, whereby the terms "module" and "unit" as used below can refer to a combination of software and / or hardware that performs a predetermined function.
[0021] This embodiment provides an ultrasonic skin tightening device, such as... Figure 1 As shown, it includes: The skin condition monitoring module 104 includes a tolerance detection unit. This unit acquires the tolerance of the user's target skin area, determined based on the impedance change of the target skin area. The target skin area can be the area currently being treated. Specifically, tolerance can be calculated directly using a formula, where the skin impedance change (e.g., rate of change) is used as a variable. Tolerance can also be obtained through a lookup table; after acquiring the skin impedance change (e.g., rate of change), the corresponding tolerance can be obtained by looking up a table. Furthermore, tolerance can be divided into multiple levels, with different levels corresponding to different impedance change ranges. In other words, after acquiring the skin impedance change (e.g., rate of change), the corresponding tolerance level can be determined by the range to which the impedance change belongs.
[0022] The control module 101 is used to control the power adjustment module 102 to adjust the ultrasonic power based on the tolerance; specifically, the control module 101 can send a power control command to the power adjustment module 102 to adjust the ultrasonic power. Power adjustment module 102 is used to adjust ultrasonic power; The ultrasound transmitting module 103 includes a focused ultrasound transducer array for transmitting focused ultrasound waves toward the skin of the target area according to the ultrasound power.
[0023] Specifically, a focused ultrasonic transducer array can be an array formed by multiple ultrasonic transducers arranged in a circular array. The ultrasonic transducers can be piezoelectric ceramic transducers, and there are 6-12 of them. In addition, the focusing depth can be adjusted from 0.5mm to 4mm by adjusting the transducer phase, and combined with power adjustment, a dual adaptation of "depth + power" can be formed.
[0024] The energy-conducting medium layer of the ultrasonic transmitting module 103 can be made of medical ultrasonic coupling gel material to fill the air gap between the ultrasonic treatment head and the skin, thereby increasing the ultrasonic energy transmission efficiency to over 90% and avoiding abnormal local temperature rise caused by energy loss.
[0025] The operating frequency of the ultrasound transducer is adjustable within the range of 3MHz-8MHz. High frequency (6MHz-8MHz) is suitable for skin tightening of superficial layers (0.5mm-1mm), while low frequency (3MHz-5MHz) is suitable for anti-aging of deep layers (2mm-4mm). This, combined with power adjustment, meets different treatment needs. The control module 101 controls the ultrasound emission module 103 to adjust the operating frequency of the ultrasound transducer according to the treatment requirements.
[0026] In this embodiment, during the skin tightening process using ultrasound, the user's skin tolerance can be monitored in real time, and then the ultrasound power can be dynamically adjusted according to the user's skin tolerance, thereby balancing treatment effectiveness and safety.
[0027] In some optional embodiments, the tolerance detection unit is further configured to send a power reduction request to the control module 101 when the impedance change rate of the skin in the target area exceeds a first preset threshold. Accordingly, the control module 101 responds to the power reduction request by controlling the power adjustment module 102 to adjust the ultrasound power.
[0028] When skin is stimulated by ultrasonic energy, its impedance changes. In this embodiment, if the rate of change in the impedance of the user's target area skin exceeds a first preset threshold, the skin is determined to be close to its tolerance limit. The first preset threshold can be an empirical value or a value determined through a large number of experiments, for example, it can be 15%.
[0029] Specifically, the skin impedance of the target area can be measured using a four-electrode method (two current electrodes and two voltage electrodes). The measurement process is as follows: two current electrodes and two voltage electrodes are fixed to the skin of the target area in a four-electrode configuration. Then, a low-power probe current (e.g., 0.01mA-0.05mA, without stimulation) is applied to the skin of the target area through the two current electrodes. The voltage drop is then measured through the voltage electrodes to obtain the skin impedance. The rate of change of impedance of the skin of the target area is the rate of change of impedance relative to the impedance measured before treatment begins.
[0030] In some optional embodiments, the skin condition monitoring module 104 further includes a skin thickness detection unit; The skin thickness detection unit is used to analyze the echo time difference of the skin thickness detection ultrasound to obtain the skin thickness of the target area (0.3mm-5mm, accuracy ±0.05mm). The control module 101 is used to control the power adjustment module 102 to adjust the ultrasound power based on the tolerance and thickness of the skin in the target area; or, the control module 101 is used to set the initial ultrasound power for the skin in the target area based on the thickness.
[0031] Specifically, the skin thickness detection ultrasound can be a low-power (≤0.05W / cm²) detection ultrasound. This detection ultrasound can be emitted by the ultrasound transmitting module 103.
[0032] In addition, the control module 101 can also control and adjust the phase of the ultrasonic transducer according to the thickness of the skin in the target area to achieve a focusing depth adjustment of 0.5mm-4mm. Combined with power adjustment, it forms a dual adaptation of "depth + power".
[0033] The control module 101 can also control the ultrasonic transmitting module 103 to adjust the working frequency of the ultrasonic transducer according to the treatment needs and the thickness of the skin in the target area.
[0034] The thickness of skin varies greatly in different parts of the human body. For example, the skin around the eyes on the face is only 0.3mm-0.5mm thick, while the skin on the abdomen can be 3mm-5mm thick. A fixed power cannot meet the energy requirements of different areas. Using high power around the eyes can easily damage the skin, while using low power on the abdomen will prevent the energy from penetrating to the deep fascia layer. Therefore, in this embodiment, in addition to adjusting the ultrasound power according to the skin's tolerance, it is also necessary to adjust the ultrasound power according to the skin thickness.
[0035] In some optional embodiments, the skin condition monitoring module 104 further includes a temperature detection unit for detecting the temperature of the skin in the target area; The control module 101 is used to control the power adjustment module 102 to adjust the ultrasound power based on the tolerance and temperature of the skin in the target area, or to control the power adjustment module 102 to adjust the ultrasound power based on the tolerance, thickness and temperature of the skin in the target area.
[0036] Specifically, the temperature detection unit can use a non-contact infrared temperature sensor, which can detect temperature at a distance of 5mm-10mm from the skin, avoiding the influence of contact sensors on treatment operations. The accuracy of the non-contact infrared temperature sensor is ±0.1℃, which can realize real-time monitoring of temperature changes in the target area of the skin.
[0037] During skin tightening using ultrasound, the skin temperature gradually increases as the ultrasound energy is absorbed. Continuously outputting ultrasound at a fixed power can easily lead to overheating and pose a safety risk. Therefore, this embodiment also dynamically adjusts the ultrasound power according to the temperature of the skin in the target treatment area.
[0038] In some optional embodiments, the control module 101 incorporates an algorithm for matching ultrasonic power with skin condition parameters, which include at least one of tolerance, temperature, and thickness.
[0039] An algorithm for matching ultrasound power with skin condition parameters can be built based on a large amount of clinical skin data. Using this matching algorithm, after obtaining at least one of the skin condition parameters (tolerance, thickness, and temperature) of the target area, the optimal ultrasound power for the current skin condition can be quickly calculated.
[0040] For example, during treatment, if the thickness of the skin around the eyes, the target area, is detected to be 0.4 mm, the temperature is 33°C, and the tolerance is normal, the algorithm selects an ultrasound power of 0.3 W / cm² and a frequency of 7 MHz. If the temperature rises to 37°C after 5 minutes of treatment, the algorithm automatically reduces the power to 0.25 W / cm² to ensure that the temperature does not exceed the safe threshold.
[0041] In some optional embodiments, the control module 101 adjusts the ultrasonic power according to the current working stage.
[0042] Specifically, the treatment process can be divided into three stages: preheating, treatment, and relaxation. Adjusting the ultrasound power according to the current treatment stage can prevent discomfort caused by excessively high power in the early stages of treatment and excessive skin irritation caused by excessively high power at the end of treatment, thus improving treatment comfort.
[0043] The control module 101 can have three different built-in matching algorithms for ultrasound power and skin condition parameters, corresponding to the three working stages mentioned above. Alternatively, the matching algorithm built into the control module 101 can be a matching algorithm for ultrasound power, working stage, and skin condition parameters.
[0044] In some optional embodiments, the power regulation module 102 includes a power amplification unit, a power detection unit, and a power feedback unit; The power amplification unit uses laterally diffused metal-oxide semiconductor (LDMOS) as the power amplification device; The power detection unit is used to detect the actual output power of the ultrasonic transmitting module 103; The power feedback unit is used to feed back the actual output power to the control module 101; The control module 101 is used to control the power adjustment module 102 to adjust the ultrasonic power when the deviation between the actual output power and the control command power exceeds a second preset threshold.
[0045] LDMOS power devices, through a lateral diffusion structure design, achieve multiple advantages such as "high breakdown voltage + low on-resistance", "high frequency characteristics + high linearity", and "strong reliability + wide adaptability". They can quickly respond to the power adjustment command of the control module 101, achieve continuous adjustment from 0.2W / cm² to 2.0W / cm², and have a power output linearity of ≥95%, avoiding unstable treatment effects caused by power fluctuations.
[0046] like Figure 2 As shown, the power adjustment module 102 (including a power amplification unit, a power detection unit, and a power feedback unit) provided in this embodiment is a "power amplification-detection-feedback" closed-loop system. The power detection unit collects the actual output power of the ultrasonic transmission module 103 in real time through a high-precision power sensor to ensure accurate detection data; the power feedback unit transmits the actual output power to the control module 101 in real time. If the deviation between the actual output power and the control command power exceeds a second preset threshold (determined according to experimental values, for example, 5%), the control module 101 can immediately send a correction command to control the power adjustment module 102 to adjust the ultrasonic power, thereby achieving precise control of the ultrasonic power.
[0047] In summary, this embodiment achieves precise adaptation of ultrasound power to different skin conditions and treatment needs through real-time skin condition monitoring and closed-loop power adjustment.
[0048] Some optional implementations, such as Figure 3 As shown, the ultrasonic skin tightening device also includes a safety protection module, which includes an overpower protection unit. The overpower protection unit is used to cut off the power supply of the ultrasonic transmitting module 103 when the actual output power of the ultrasonic transmitting module 103 exceeds a third preset threshold.
[0049] The third preset threshold can be an empirical value or determined based on a large number of experiments, for example, it can be 2.2W / cm² (safety upper limit).
[0050] In this embodiment, the overpower protection unit monitors the actual output power of the ultrasound in real time. When the actual output power exceeds 2.2W / cm² (safety limit), the power supply of the ultrasound transmitting module 103 is immediately cut off.
[0051] In some optional embodiments, the safety protection module further includes at least one of an emergency stop unit, an over-temperature protection unit, and a timeout protection unit.
[0052] The emergency stop unit is used to control the ultrasonic skin tightening device to stop outputting energy; specifically, the emergency stop unit may include a physical emergency stop button to ensure that the device can be stopped quickly in an emergency, reducing safety risks.
[0053] The over-temperature protection unit is used to control the ultrasound transmitting module 103 to stop outputting energy when the temperature of the skin in the target area exceeds a preset temperature threshold (e.g., 41°C). Specifically, the over-temperature protection unit can send a corresponding signal to the control module 101 when the temperature of the skin in the target area exceeds the preset temperature threshold, and the control module 101 controls the ultrasound transmitting module 103 to stop outputting energy after receiving the signal. Alternatively, the over-temperature protection unit can directly control the ultrasound transmitting module 103 to stop outputting energy (e.g., by controlling the power switch of the ultrasound transmitting module 103 to turn off) when the temperature of the skin in the target area exceeds the preset temperature threshold.
[0054] The timeout protection unit is used to control the ultrasonic emission module 103 to stop outputting energy when the working time for the target skin area exceeds a first time threshold; and to control the ultrasonic skin tightening device to stop outputting energy when the total working time of a single session exceeds a second time threshold. The first and second time thresholds can be determined according to actual needs; for example, the first time threshold can be 5 minutes, and the second time threshold can be 30 minutes.
[0055] The ultrasonic skin tightening device provided in this embodiment incorporates multiple safety protection mechanisms to ensure the safety of the treatment.
[0056] This embodiment also provides an ultrasound device, including any of the ultrasound skin tightening devices described in the above embodiments.
[0057] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.
Claims
1. An ultrasonic skin tightening device, characterized in that, include: A skin condition monitoring module, comprising a tolerance detection unit, wherein the tolerance detection unit is used to acquire the tolerance of the user's skin in a target area, the tolerance being determined based on the impedance change of the skin in the target area; Power adjustment module, used to adjust ultrasonic power; A control module is used to control the power adjustment module to adjust the ultrasonic power based on the tolerance level; An ultrasound transmitting module, including a focused ultrasound transducer array, is used to transmit focused ultrasound waves toward the skin of the target area according to the ultrasound power.
2. The apparatus according to claim 1, characterized in that, The tolerance detection unit is also used to send a power reduction request to the control module when the impedance change rate of the skin in the target area exceeds a first preset threshold.
3. The apparatus according to claim 1, characterized in that, The skin condition monitoring module also includes a skin thickness detection unit; The skin thickness detection unit is used to analyze the echo time difference of the skin thickness detection ultrasound to obtain the thickness of the skin in the target area; The control module is used to control the power adjustment module to adjust the ultrasound power based on the tolerance and thickness of the skin in the target area; or, the control module is used to set the initial ultrasound power for the skin in the target area based on the thickness.
4. The apparatus according to claim 1, characterized in that, The skin condition monitoring module also includes a temperature detection unit, which is used to detect the temperature of the skin in the target area. The control module is used to control the power adjustment module to adjust the ultrasound power based on the tolerance and temperature of the skin in the target area, or to control the power adjustment module to adjust the ultrasound power based on the tolerance, thickness, and temperature of the skin in the target area.
5. The apparatus according to claim 1, 3, or 4, characterized in that, The control module incorporates an algorithm for matching ultrasonic power with skin condition parameters, which include at least one of tolerance, temperature, and thickness.
6. The apparatus according to claim 1, characterized in that, When adjusting the ultrasonic power, the control module also makes adjustments based on the current working stage.
7. The apparatus according to claim 1, characterized in that, The power regulation module includes a power amplification unit, a power detection unit, and a power feedback unit; The power amplification unit uses a laterally diffused metal-oxide-semiconductor as the power amplification device. The power detection unit is used to detect the actual output power of the ultrasonic transmitting module; The power feedback unit is used to feed back the actual output power to the control module; The control module is used to control the power adjustment module to adjust the ultrasonic power when the deviation between the actual output power and the control command power exceeds a second preset threshold.
8. The apparatus according to claim 1, characterized in that, It also includes a safety protection module, which includes an overpower protection unit. The overpower protection unit is used to cut off the power supply of the ultrasonic transmitting module when the actual output power of the ultrasonic transmitting module exceeds a third preset threshold.
9. The apparatus according to claim 8, characterized in that, The safety protection module further includes at least one of an emergency stop unit, an over-temperature protection unit, and a timeout protection unit; The emergency stop unit is used to control the ultrasonic skin tightening device to stop outputting energy; The over-temperature protection unit is used to control the ultrasound emission module to stop outputting energy when the temperature of the skin in the target area exceeds a preset temperature threshold. The timeout protection unit is used to control the ultrasonic emission module to stop outputting energy when the working time for the target area skin exceeds a first time threshold; and to control the ultrasonic skin tightening device to stop outputting energy when the total working time of a single operation of the ultrasonic skin tightening device exceeds a second time threshold.
10. An ultrasonic device, characterized in that, Includes the ultrasonic skin tightening device according to any one of claims 1-9.