Skin beautifying method and device based on pulse laser

Abstract

The invention discloses a skin beautifying method based on pulse laser. The skin beautifying method comprises the following steps: S1, acquiring epidermal pigment distribution, dermal collagen density, wrinkle depth and a blood vessel abnormal area through a spectral confocal microscope and a VISIA skin analyzer; s2, performing epidermis pretreatment by adopting strong pulsed light, selecting a wave band of 500-600nm or 600-1200nm according to the type of skin problems, the energy density of 8-25J / cm and the pulse width of 2-10ms; s3, pulse laser deep treatment is started after 15-60 s; s4, monitoring blood oxygen saturation and melanin index of skin tissue in real time through a spectral reflectometer during treatment, and dynamically adjusting light source energy and pulse interval; s5, after treatment, adopting cold compress gel containing hyaluronic acid to cooperate with an ultrasonic introduction instrument to promote epidermis repair; and S6, performing curative effect evaluation regularly. According to the method, a personalized scheme is generated through multi-dimensional skin detection, IPL is utilized to pretreat epidermis pigment and blood vessel problems, and 755nm / 1064nm pulse laser is combined to deeply stimulate collagen regeneration, so that epidermis-corium layer collaborative treatment is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of medical aesthetics, and particularly relates to a skin beautification method and device based on pulsed laser. Background Art

[0002] In the field of medical aesthetics for skin anti-wrinkle and anti-aging, the current mainstream optoelectronic devices are mainly radio frequency and ultrasonic technologies. The radio frequency device relies on electrodes to generate heat and acts on the dermis of the skin, usually with a depth less than 5 mm; the ultrasonic technology uses ultrasonic waves to generate heat and mainly acts on the fascia layer.

[0003] Intense pulsed light (IPL) therapy acts on the epidermis through a broad spectrum (500 - 1200 nm) and has a good selective destruction effect on pigment granules and abnormal blood vessels, but has limited ability to stimulate collagen in the dermis; traditional pulsed lasers (such as 1064 nm, 755 nm) can penetrate deep into the dermis to stimulate the photo-thermal effect, but when used alone, the risk of epidermal damage is relatively high, and the comprehensive improvement effect on complex skin problems, such as the combined problems of pigmentation and aging, is insufficient. Summary of the Invention

[0004] Aiming at the deficiencies of the above-mentioned existing technologies, the present invention provides a skin beautification method and device based on pulsed laser that realizes combined treatment through the synergistic effect of multiple light sources to solve multi-dimensional skin problems.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: A skin beautification method based on pulsed laser, comprising the following steps: S1. Obtain the epidermal pigment distribution, dermal collagen density, wrinkle depth, and abnormal blood vessel areas through a spectral confocal microscope and a VISIA skin analyzer; S2. Perform epidermal pretreatment with intense pulsed light, select a wavelength band of 500 - 600 nm or 600 - 1200 nm according to the type of skin problem, with an energy density of 8 - 25 J / cm² and a pulse width of 2 - 10 ms; S3. Start deep treatment with pulsed laser after an interval of 15 - 60 s; S4. During the treatment, the blood oxygen saturation and melanin index of the skin tissue are monitored in real time through a spectral reflectometer, and the light source energy and pulse interval are dynamically adjusted; S5. After the treatment, use a cold compress gel containing hyaluronic acid in combination with an ultrasonic introducer to promote epidermal repair; S6. Regularly evaluate the curative effect.

[0006] Furthermore, the energy ratio of the intense pulsed light to the pulsed laser is dynamically adjusted according to the Fitzpatrick skin type, and the laser energy for skin types III - IV is reduced by 10% - 20% compared with skin types I - II.

[0007] Furthermore, the focusing depth of the pulsed laser is adjusted according to the dermal thickness with an adjustment accuracy of ±0.5 mm, and layered treatment is performed at a depth of 0.5 - 5 mm.

[0008] Furthermore, for aging problems, 1064 nm laser is used with a pulse width of 1 - 10 ms and an energy density of 20 - 30 J / cm²; Furthermore, for pigment problems, 755 nm laser is used with a pulse width of 50 - 200 ns and an energy density of 8 - 15 J / cm².

[0009] The present invention also provides a skin beauty device based on pulsed laser combined with intense pulsed light, comprising: An intense pulsed light module, which integrates a broadband light source of 500 - 1200 nm and is equipped with a replaceable filter. The pulse energy density adjustment range is 8 - 25 J / cm², and the pulse width is 2 - 10 ms; A pulsed laser module, which includes a 755 nm solid laser with a pulse width of 50 - 200 ns and a repetition frequency of 10 - 100 Hz; and a 1064 nm Nd:YAG laser with a pulse width of 1 ms - 10 ms and an energy density of 10 - 40 J / cm². The optical path coupling is achieved through a dichroic mirror, and the focusing lens group has an accuracy of ±0.5 mm; A contact cooling system: A semiconductor refrigerating sheet is integrated at the front end of the treatment head and is combined with a sapphire light guide window to cool the treatment area in real time.

[0010] Even further, it further includes: A multimodal sensor group, which includes a spectral reflection sensor, a pressure sensor, and a temperature sensor to collect the physiological parameters of the treatment area in real time; A BP neural network model, which, based on the collected physiological parameters, inputs the skin type, treatment site, and problem type, and outputs the optimal energy ratio and treatment timing of the intense pulsed light and the pulsed laser.

[0011] Furthermore, the spot diameter of the pulsed laser module is 3 - 8 mm.

[0012] Compared with the prior art, the beneficial effects of the present invention are: (1) The IPL of the present invention solves epidermal pigment and vascular problems, and the pulsed laser activates deep collagen regeneration, achieving the dual effects of "epidermal renewal - dermal remodeling", and the clinical effective rate is increased by 30% compared with single therapy.

[0013] (2) By real-time monitoring of skin reactions through a multimodal sensor and dynamically adjusting the parameters of the dual light sources in combination with an AI algorithm, the risk of epidermal thermal damage is reduced by 60% (compared with the traditional fixed parameter mode).

[0014] (3) Generate a differentiated solution based on skin detection data to adapt to different skin types and complex skin problems. Detailed implementation manners

[0015] The present invention will be further described in detail below in conjunction with embodiments. Embodiment

[0016] A skin beauty method based on pulsed laser includes the following steps: S1. Obtain epidermal pigment distribution, dermal collagen density, wrinkle depth, and vascular abnormal regions through a spectral confocal microscope and a VISIA skin analyzer; for example, the resolution of the spectral confocal microscope is ≤5μm, detect epidermal pigment distribution and dermal collagen density, and combine with the VISIA skin analyzer to obtain parameters such as wrinkle depth (0-4 levels) and vascular abnormal regions (red area).

[0017] S2. Perform epidermal pretreatment with intense pulsed light, select a wavelength band of 500-600nm or 600-1200nm according to the type of skin problem, with an energy density of 8-25J / cm² and a pulse width of 2-10ms; Among them, use 755nm laser for pigment problems, use 1064nm laser for aging problems, with a pulse width of 1-10ms and an energy density of 20-30J / cm²; when using 755nm laser for pigment problems, the pulse width is 50-200ns and the energy density is 8-15J / cm².

[0018] For example, for pigment-dominated types such as melasma, perform epidermal pretreatment with intense pulsed laser (560nm filter, energy density 12-18J / cm², number of pulses 3-5, pulse width 3-6ms); with an interval of 30-60s, perform deep pigment blasting with short-pulse laser (755nm, pulse width 50-100ns, energy density 8-15J / cm²); For aging-dominated types such as wrinkle relaxation, perform dermal thermal stimulation with long-pulse laser (1064nm, pulse width 1-10ms, energy density 20-30J / cm²), with an interval of 15-30s, and perform epidermal photoaging repair with intense pulsed laser (590nm filter, energy density 15-22J / cm²).

[0019] S3. Start deep treatment with pulsed laser after an interval of 15-60s; S4. During the treatment, real-time monitor the blood oxygen saturation and melanin index of the skin tissue through a spectral reflectometer, and dynamically adjust the light source energy and pulse interval; The energy ratio of the intense pulsed light to the pulsed laser is dynamically adjusted according to the Fitzpatrick skin type. The laser energy for skin types III-IV is reduced by 10%-20% compared to that for skin types I-II.

[0020] The energy of the pulsed laser is dynamically adjusted according to the Fitzpatrick skin type. The pulsed laser energy for skin types III-IV is reduced by 10%-20% compared to that for skin types I-II.

[0021] The focusing depth of the pulsed laser is adjusted according to the dermal thickness, with an adjustment accuracy of ±0.5 mm. Stratified treatment at a depth of 0.5-5 mm is performed to achieve stratified treatment from the epidermis to the deep dermis.

[0022] When using a 1064 nm laser for aging problems, the pulse width is 1-10 ms, the energy density is 20-30 J / cm², and the 1064 nm laser is used to stimulate the thermal denaturation of dermal collagen.

[0023] When using a 755 nm laser for pigment problems, the pulse width is 50-200 ns, the energy density is 8-15 J / cm², and the 755 nm laser is used to break up deep pigment clusters.

[0024] Dual-light-source collaborative treatment process Epidermal pretreatment with intense pulsed laser: The intense pulsed light is focused on the epidermal layer (depth 0.1-0.5 mm) through a filter system (dual-band selectable: 500-600 nm / 600-1200 nm), and pigment particles (diameter <50 μm) are broken up through the photo-thermal decomposition effect. At the same time, abnormal capillaries (diameter > 30 μm) are sealed. A contact cooling device (-5~10 °C) is built into the treatment head to synchronously reduce the risk of epidermal thermal damage.

[0025] Deep treatment with pulsed laser: The laser focusing depth (0.5-5 mm) is adjusted according to the skin thickness. The 1064 nm laser (energy density gradient 15-30 J / cm²) stimulates the thermal denaturation of dermal hydratase and initiates the collagen remodeling mechanism; the 755 nm laser (spot diameter 3-8 mm, repetition frequency 10-50 Hz) breaks up deep pigment clusters (diameter > 50 μm) through the photoacoustic effect (peak sound pressure 0.5-1.2 MPa), and at the same time activates the proliferation of fibroblasts.

[0026] Dynamic feedback regulation: During treatment, the blood oxygen saturation (SpO 2 ) and the change in melanin index (MI) of the skin tissue are monitored in real time by a spectral reflectometer. When the MI fluctuates beyond the preset threshold (±15%), the laser energy (±10%) and the IPL pulse interval (±10 ms) are automatically adjusted.

[0027] S5. After treatment, a cold compress gel containing hyaluronic acid is used in combination with an ultrasonic introducer to promote epidermal repair; S6. Conduct efficacy evaluations regularly.

[0028] Immediately after treatment, a cold compress gel containing hyaluronic acid (concentration 0.8 - 1.2%) is introduced, and an ultrasonic introducer (frequency 1 - 3 MHz, intensity 0.3 - 0.6 W / cm²) is used to promote epidermal repair.

[0029] Establish an efficacy evaluation model: At 1, 4, and 12 weeks after treatment, use Cutometer MPA580 to detect skin elasticity (R2 value), and Corneometer CM825 to detect transepidermal water loss (TEWL). Combine the doctor's subjective scores (wrinkle improvement degree, pigment reduction rate) to adjust the subsequent treatment plan. Example

[0030] This example provides a skin beauty device based on pulsed laser, including: A intense pulsed light module, which integrates a broadband light source of 500 - 1200 nm, is equipped with a replaceable filter, the pulse energy density adjustment range is 8 - 25 J / cm², and the pulse width is 2 - 10 ms.

[0031] A pulsed laser module, which contains a 755 nm solid laser with a pulse width of 50 - 200 ns and a repetition frequency of 10 - 100 Hz; and a 1064 nm Nd:YAG laser with a pulse width of 1 ms - 10 ms and an energy density of 10 - 40 J / cm². The optical path coupling is achieved through a dichroic mirror, and the focusing lens group has an accuracy of ±0.5 mm; the reflectivity of the dichroic mirror to 755 nm laser is > 95%, and the transmittance to 1064 nm laser is > 90%.

[0032] A contact cooling system: A semiconductor refrigerating sheet is integrated at the front end of the treatment head and is combined with a sapphire light guide window to cool the treatment area in real time, and the epidermal temperature is controlled ≤ 35°C.

[0033] It also includes: A multimodal sensor group, which includes a spectral reflection sensor, a pressure sensor, and a temperature sensor to collect the physiological parameters of the treatment area in real time.

[0034] A BP neural network model, which based on the collected physiological parameters, inputs skin type, treatment site, and problem type, and outputs the optimal energy ratio and treatment timing of intense pulsed light and pulsed laser.

[0035] The spot diameter of the pulsed laser module is 3 - 8 mm.

[0036] In summary, the present invention realizes the synergistic effects of pigment improvement, collagen regeneration, and skin structure remodeling through dual-light source timing coupling, energy dynamic ratio, and epidermis-dermis stratified treatment, and solves the problems of insufficient comprehensive efficacy and rough parameter adjustment in the prior art.

[0037] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A skin beauty method based on pulsed laser, characterized in that: The following steps are involved: S1. Obtain epidermal pigment distribution, dermal collagen density, wrinkle depth, and vascular abnormality areas using spectral confocal microscopy and VISIA skin analyzer; S2. Use intense pulsed light for epidermal pretreatment, select 500-600nm or 600-1200nm band according to the type of skin problem, energy density 8-25J / cm², pulse width 2-10ms; S3, start pulse laser deep treatment after an interval of 15-60s; S4. During treatment, the blood oxygen saturation and melanin index of skin tissue are monitored in real time through a spectral reflectometer, and the light source energy and pulse interval are adjusted dynamically; S5. After treatment, cold compress gel containing hyaluronic acid is used in combination with ultrasound transdermal device to promote epidermal repair; S6. Conduct efficacy evaluation regularly.

2. The skin beauty method based on pulsed laser according to claim 1, characterized in that: The energy ratio of the intense pulsed light and pulsed laser is dynamically adjusted according to the Fitzpatrick skin type, and the laser energy for type III-IV skin is 10%-20% lower than that for type I-II skin.

3. The skin beauty method based on pulsed laser according to claim 1, characterized in that: The focal depth of the pulsed laser is adjusted according to the thickness of the dermis, with an adjustment accuracy of ±0.5mm, and layered treatment is performed at a depth of 0.5-5mm.

4. The method according to claim 1, characterized in that: For aging problems, 1064nm laser is used, with a pulse width of 1-10ms and an energy density of 20-30J / cm².

5. The pulse laser-based skin beauty method according to claim 4, characterized in that: When using 755nm laser for pigmentation problems, the pulse width is 50-200ns and the energy density is 8-15J / cm².

6. A skin beauty device based on pulsed laser, characterized in that: include: Intense pulsed light module, which integrates a 500-1200nm wide spectrum light source and is equipped with a replaceable filter, with a pulse energy density adjustment range of 8-25J / cm² and a pulse width of 2-10ms; Pulse laser module, the pulse laser module includes 755nm solid laser, pulse width 50-200ns, repetition frequency 10-100Hz; and 1064nm Nd:YAG laser, pulse width 1ms-10ms, energy density 10-40J / cm², optical path coupling is achieved through a dichroic mirror, and the focusing lens group accuracy is ±0.5mm; Contact cooling system: The front end of the treatment head is integrated with a semiconductor cooling chip, and cooperates with a sapphire light guide window to cool the treatment area in real time.

7. The skin beauty device based on pulsed laser combined with intense pulsed light according to claim 6, characterized in that: Also includes: A multimodal sensor group, which includes a spectral reflectance sensor, a pressure sensor, and a temperature sensor, for collecting physiological parameters of the treatment area in real time; The BP neural network model, based on the collected physiological parameters, inputs the skin type, treatment site and problem type, and outputs the optimal energy ratio and treatment sequence of intense pulsed light and pulsed laser.

8. The skin beauty device based on pulsed laser combined with intense pulsed light according to claim 6, characterized in that: The spot diameter of the pulse laser module is 3-8 mm.