Optical device for skin beauty and treatment

Abstract

The invention discloses an optical device for skin beauty and treatment. The optical device comprises a laser emitting module and a focusing module. Wherein the laser emission module outputs laser, and the output pulse of the output laser of the laser emission module is 1 femtosecond to 200 picoseconds. The focusing module is arranged on the light emitting side of the laser emitting module and used for focusing a single pulse or pulse string of the laser to a designated position so as to form a plurality of tiny injury areas on the skin surface or in human tissue, and the tiny injury areas can activate the skin self-repairing mechanism to induce regeneration and reconstruction of local collagen and elastic fibers. The skin repairing efficiency is improved, and meanwhile, the heat injury of surrounding tissues can be reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to an optical device for skin beauty and treatment. Background Art

[0002] In current clinical practice, there are various common methods in the field of skin wrinkle removal and skin rejuvenation. Among them, the application of carbon dioxide laser, radiofrequency microneedle, and mechanical microneedle technologies is relatively widespread.

[0003] The carbon dioxide laser treatment method uses a laser with a wavelength of 10.6 micrometers as the energy source. During the implementation of this technical solution, since it acts on tissues with water molecules as the main target chromophore, it lacks the ability to selectively act on specific substances. This characteristic makes it difficult to accurately act on specific pathological factors causing skin aging when achieving the goals of skin wrinkle removal and skin rejuvenation, resulting in a gap between the treatment effect and the expectation and being unable to fully meet the clinical treatment requirements. At the same time, during the action of the carbon dioxide laser, the generated thermal effect will spread to the surrounding tissues, causing a large area of thermal damage. This large thermal damage may not only destroy the normal physiological structure and function of the surrounding healthy tissues but also trigger a series of complications, increasing the treatment risk and the postoperative recovery burden of patients.

[0004] For technical solutions such as radiofrequency microneedles and mechanical microneedles, during the process of achieving skin wrinkle removal and skin rejuvenation, they rely on creating minimally invasive wounds on the skin to stimulate the skin's own repair mechanism to achieve the treatment purpose. However, such technical solutions have obvious defects. Their treatment process will cause a certain degree of trauma to the skin, and patients need to experience a long recovery period after the operation. During this period, patients need to endure discomfort symptoms such as skin redness and pain, and need to strictly follow specific nursing requirements, which have a great impact on the daily life and work of patients. In addition, due to the action mode and intensity of radiofrequency microneedles and mechanical microneedles on the skin surface being difficult to achieve complete uniformity, the degree of trauma suffered by different parts of the skin may be uneven. This uneven trauma phenomenon is likely to cause adverse reactions such as uneven skin pigmentation, scar hyperplasia, and infection, reducing the safety and effectiveness of the treatment and limiting the wide application and promotion of such technologies in clinical practice. Summary of the Invention

[0005] In view of some or all of the problems in the prior art, the present invention provides an optical device for skin beauty and treatment, including:

[0006] A laser emission module for outputting a laser, wherein the output pulse of the laser is from 1 femtosecond to 200 picoseconds; and

[0007] A focusing module, which is disposed on the light-emitting side of the laser emission module and is used to focus a single pulse or a pulse train of the laser to a specified position to form a plurality of micro-damage regions on the skin surface or in human tissues, and the micro-damage regions can activate the skin self-repair mechanism to induce the regeneration and reconstruction of local collagen and elastic fibers.

[0008] Further, the focusing module includes:

[0009] A light guide arm, the first end of which is disposed at the light outlet of the laser emission module;

[0010] A lens group, which is disposed at the second end of the light guide arm opposite to its first end and is linked with the second end of the light guide arm through a mechanical linkage device, and the lens group includes a galvanometer and an objective lens, or a galvanometer and a field lens, wherein the galvanometer is used to increase the area of the focused spot of the laser; and

[0011] A slider mechanism, which is connected to the second end of the light guide arm and is used to control the axial position of the second end of the light guide arm and the lens group according to the distance from the probe to the skin, so as to focus the laser to a predetermined depth under the skin.

[0012] Further, the focusing module further includes:

[0013] A traction module, which is connected to the galvanometer and is used to traction the galvanometer to move so as to expand the area of the focused spot of the laser.

[0014] Further, forming a plurality of micro-damage regions on the skin surface or in human tissues includes: inducing optical breakdown and / or microcavitation and / or microburst effect at a specified position.

[0015] Further, the size of the micro-damage region is less than 1 mm.

[0016] Further, if the laser wavelength is in the range of 527 nm to 537 nm, the size of the micro-damage region is less than 100 μm.

[0017] Further, the single-pulse energy of the laser is 1 nJ to 1000 mJ.

[0018] Further, the diameter of the focused spot of the laser is less than 200 μm.

[0019] Further, the specified position includes the skin surface or a predetermined depth under the skin.

[0020] Further, the optical device further includes:

[0021] A scanning control module, which is communicatively connected to the laser emission module and the focusing module, and is used to set treatment parameters, where the treatment parameters include the single-pulse energy of the laser, pulse trains, output pulse width, and focused spot diameter.

[0022] Further, the scanning control module is used to control the focusing module to adjust the focused spot diameter so as to control the laser pulse energy irradiated on the skin.

[0023] Further, the scanning control module is also used to control the movement of the laser output by the laser emission module within a specified area.

[0024] Further, the scanning control module is also used to control the movement of the laser output by the laser emission module within a specified area along a preset trajectory.

[0025] Further, the optical device further includes:

[0026] A display and feedback module, which is configured to monitor treatment parameters and feedback treatment results, where the treatment effects include pictures of the damaged area, depth of the damaged area, and size of the damaged area.

[0027] An optical device for skin beauty and treatment provided by the present invention realizes skin beauty and treatment by adopting a technical solution of ultrafast laser combined with adjustable pulse energy and adjustable focused spot. The extremely short pulses and high peak power of the ultrafast laser can make the energy deposition area extremely small, achieve precise local energy deposition, limit heat diffusion, and thus significantly reduce the thermal damage of surrounding tissues. The local micro-damaged area caused by the laser can effectively stimulate the skin's self-healing reaction, promote the regeneration of collagen and elastic fibers, achieve wrinkle removal, firming and skin rejuvenation, and efficiently activate skin repair. At the same time, the formed micro-damaged area is small and evenly distributed, the skin recovers quickly after treatment, there are few adverse reactions, the recovery period is short, and the side effects are low. In addition, by adjusting the pulse energy and the size of the focused spot, personalized optimization can be carried out for different skin types and treatment sites, with high flexibility and wide application range. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] To further clarify the above and other advantages and features of the embodiments of the present invention, more specific descriptions of the embodiments of the present invention will be presented with reference to the drawings. It can be understood that these drawings only depict typical embodiments of the present invention and will not be considered as limiting its scope. In the drawings, for clarity, the same or corresponding components will be denoted by the same or similar reference numerals.

[0029] Figure 1 A schematic structural diagram of an optical device for skin beauty and treatment showing an embodiment of the present invention is shown. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] The present invention will be further described below in conjunction with specific embodiments with reference to the accompanying drawings. It should be noted that the components in the respective drawings may be exaggerated for illustrative purposes and not necessarily drawn to scale. In the respective drawings, the same or functionally identical components are provided with the same reference numerals.

[0031] In the present invention, unless otherwise specified, the expressions "disposed on", "disposed above", and "disposed over" do not exclude the presence of intermediate elements therebetween. In addition, "disposed on or above" only represents the relative positional relationship between two components, and in certain cases, such as after reversing the product direction, it can also be converted to "disposed under or below", and vice versa.

[0032] In the present invention, the respective embodiments are only intended to illustrate the solutions of the present invention and should not be construed as restrictive.

[0033] In the present invention, unless otherwise specified, the quantifiers "a" and "one" do not exclude the scenario of multiple elements.

[0034] It should also be noted here that in the embodiments of the present invention, for the sake of clarity and simplicity, only a part of the components or assemblies may be shown, but those of ordinary skill in the art can understand that, under the teaching of the present invention, the required components or assemblies can be added according to the specific scenario requirements.

[0035] It should also be noted here that within the scope of the present invention, the terms "same", "equal", "equivalent", etc. do not mean that the two values are absolutely equal, but allow for a certain reasonable error, that is, the said terms also cover "substantially the same", "substantially equal", "substantially equivalent". By analogy, in the present invention, the directional terms "perpendicular to", "parallel to", etc. also cover the meanings of "substantially perpendicular to" and "substantially parallel to".

[0036] The inventors have found through research that an ultrafast laser refers to a laser with a pulse width of 1 fs to 150 ps. Its pulse is extremely short and has a high peak power. Therefore, energy can be concentrated and deposited in a tiny area within an extremely short time, inducing optical breakdown, microcavity bubble, and microburst effects, thereby forming a microdamage zone with a diameter of only 1 μm to 200 μm. If it acts on the skin, the local microdamage zone formed on the skin surface or under the skin can effectively stimulate the skin's self-healing response. The inventors have further found through research that by adjusting the laser pulse energy and the focused spot size according to the treatment needs, precise energy deposition can be further achieved, minimizing heat diffusion, activating the local skin repair mechanism, promoting the reconstruction of collagen and elastic fibers, and achieving the purpose of wrinkle removal and skin rejuvenation. Based on this, the present invention proposes an optical device for skin beauty and treatment, which adopts the technical solution of an ultrafast laser combined with adjustable pulse energy and an adjustable focused spot to achieve skin beauty and treatment.

[0037] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings of the embodiments.

[0038] Figure 1 The structural schematic diagram of an optical device for skin beauty and treatment showing an embodiment of the present invention is as follows Figure 1 As shown, an optical device for skin beauty and treatment includes a laser emission module 101 and a focusing module 102. The focusing module 102 is disposed on the light-emitting side of the laser emission module 101 to focus a single pulse or a pulse train of the laser to a specified position. The laser can form a plurality of micro-injury regions on the skin surface or in human tissues, and the micro-injury regions can activate the skin self-repair mechanism to induce the regeneration and reconstruction of local collagen and elastic fibers, thereby achieving the effects of wrinkle removal, skin tightening, and skin rejuvenation.

[0039] As described above, in an embodiment of the present invention, the laser emission module 101 can emit a laser with an output pulse of 1 femtosecond to 200 picoseconds, and the single-pulse energy of the laser is 1 nJ to 1000 mJ, and the diameter of the focused spot is less than 200 μm. The high peak power of the laser can induce optical breakdown and / or microcavitation bubbles and / or microexplosion effects at the skin surface or a specified depth under the skin, thereby forming the plurality of micro-injury regions. In an embodiment of the present invention, the size of the micro-injury region is less than 1 mm. Preferably, if the laser wavelength is in the range of 527 nm to 537 nm, the size of the micro-injury region is less than 100 μm.

[0040] In an embodiment of the present invention, as Figure 1As shown, the focusing module 102 includes a light guide arm 121, a lens group 122, and a slider mechanism. The first end of the light guide arm 121 is disposed at the light exit of the laser emission module 101, and the lens group 122 is disposed at the second end of the light guide arm 121 opposite to its first end. The laser emitted by the laser emission module 101 reaches the lens group 122 through the guidance of the light guide arm 121 and is then focused to a specified position. In an embodiment of the present invention, by adjusting the position and angle of the lens group 122, the size and position of the focused spot can be adjusted. Based on this, in an embodiment of the present invention, the lens group 122 is not fixed to the second end of the light guide arm 121, but is linked to the second end of the light guide arm through a mechanical linkage device. In an embodiment of the present invention, the lens group 122 includes, for example, a galvanometer and an objective lens, or a galvanometer and a field lens, where the galvanometer is used to increase the area of the focused spot of the laser. To better adjust the position and angle of the lens group 122, a slider mechanism is further disposed at the second end of the light guide arm 121. The slider mechanism is used to control the axial position of the second end of the light guide arm and the lens group according to the distance from the probe to the skin, so as to focus the laser to a predetermined depth under the skin. Specifically, in the actual use process, first, a detection module such as a displacement sensor can be used to measure the distance from the probe to the skin surface in real time. Since the focal length of the objective lens has been pre-calibrated and the corresponding relationship between the measured value of the displacement sensor and the focal length of the objective lens has been established, the required displacement adjustment amount can be automatically calculated according to the preset imaging / action depth requirement. Then, a driving device such as a high-precision stepper motor is used to drive the slider mechanism, so that the slider mechanism controls the axial positions of the second end of the light guide arm and the lens group 122 through the mechanical linkage device at the same time, thereby realizing the precise positioning of the optical focal plane in the tissue.

[0041] In an embodiment of the present invention, in order to expand the area of the focused spot of the laser, the focusing module further includes a traction module 123. The traction module 123 is connected to the lens group 122, preferably connected to the galvanometer, to traction the galvanometer to move.

[0042] During the actual skin beautification or treatment process, the treatment area may be relatively large. At this time, it is only necessary for the laser beam to continuously irradiate within the treatment area according to a preset pattern or trajectory to ensure the uniform distribution of the micro-damage areas. Based on this, in an embodiment of the present invention, the optical device further includes a scanning control module 103, which is communicatively connected to the laser emission module 101 and the focusing module 102, and is used to set treatment parameters, and can control the slider mechanism and the traction module based on the treatment parameters to meet the requirements of the treatment parameters, or control the focusing module 102 to continuously irradiate within the treatment area according to a preset pattern or trajectory. The treatment parameters include the single-pulse energy, pulse train, output pulse width, and focused spot diameter of the laser. In some embodiments of the present invention, different parameters can be set according to different treatment needs or beautification needs. For example, for skin wrinkle removal, an ultrafast laser with a pulse width of 50 ps and a single-pulse energy of 20 μJ can be used. At the same time, a high numerical aperture focusing lens is selected as the focusing module to focus the laser to a depth of about 1 mm under the skin, and the focused spot diameter is set to about 50 μm. Within this depth, the laser instantaneously induces optical breakdown and microcavitation effects, forming micro-damage areas with a diameter of about 50 to 200 μm. After treatment, the skin locally initiates self-repair, and new collagen and elastic fibers are reorganized, reducing wrinkles, tightening the skin, and significantly improving the skin texture. For skin tightening, a laser with a pulse width of 10 fs can be used to irradiate a deeper layer under the skin, such as at a position about 3 mm. The focused spot diameter is adjusted to about 10 μm. Through continuous scanning control, the damage areas can be evenly distributed within the treatment area, thereby activating the collagen reorganization mechanism in the superficial and deep layers respectively, and being applicable to patients with obvious skin relaxation. In addition, in an embodiment of the present invention, the laser pulse energy can also be adjusted according to the treatment site and skin type. For example, for thinner skin areas, a low-energy small spot, such as a laser with a single-pulse energy of 1 nJ and a focused spot diameter set to 1 μm, is used. For thicker skin areas, a higher-energy large spot, such as a laser with a single-pulse energy of 1 mJ and a focused spot diameter set to 200 μm, is used to achieve the best treatment effect.

[0043] In an embodiment of the present invention, the optical device further includes a display and feedback module 104, which is configured to monitor the treatment parameters and feedback the treatment results, where the treatment effects include pictures of the damage areas, the depth of the damage areas, and the size of the damage areas.

[0044] The present invention forms local micro-damage areas under the skin by utilizing the comprehensive technical solution of ultrafast laser, adjustable pulse energy, and focused spot diameter, thereby activating the skin self-repair mechanism, promoting the regeneration of collagen and elastic fibers, and achieving the effects of wrinkle removal, skin tightening, and skin rejuvenation. This solution has the advantages of precise local energy deposition, low heat diffusion, high flexibility in personalized treatment, and short recovery period, and has obvious advantages compared with traditional technologies.

[0045] Although the embodiments of the present invention have been described above, it should be understood that they are presented by way of example only and not as a limitation. It will be apparent to those skilled in the relevant art that various combinations, variations and changes can be made thereto without departing from the spirit and scope of the present invention. Therefore, the breadth and scope of the present invention disclosed herein should not be limited by the exemplary embodiments disclosed above, but should be defined only in accordance with the appended claims and their equivalents.

Claims

1. An optical device for skin beauty and treatment, characterized in that: include: A laser emission module, which is configured to output laser light, wherein the output pulse of the laser light is 1 femtosecond to 200 picoseconds; as well as A focusing module is arranged on the light-emitting side of the laser emitting module and is configured to focus a single pulse or a pulse train of the laser to a specified position to form a plurality of micro-damage areas on the skin surface or in human tissue, wherein the micro-damage areas are constructed to activate the skin's self-repair mechanism to induce local collagen and elastic fiber regeneration and reconstruction.

2. The optical device according to claim 1, characterized in that The focusing module comprises: A light guide arm, a first end of which is arranged at a light outlet of the laser emission module; a lens group, which is arranged at the second end of the light guide arm opposite to the first end thereof and is linked with the second end of the light guide arm through a mechanical linkage device, wherein the lens group comprises a galvanometer and an objective lens, or a galvanometer and a field lens, wherein the galvanometer is configured to increase the area of ​​the focused spot of the laser; and The slider mechanism is connected to the second end of the light guide arm and is configured to control the second end of the light guide arm and the axial position of the lens group according to the distance from the probe to the skin, so as to focus the laser to a predetermined depth under the skin.

3. The optical device according to claim 2, characterized in that The focusing module also includes: The pulling module is connected to the galvanometer mirror and is configured to pull the galvanometer mirror to move so as to expand the area of ​​the focused spot of the laser.

4. The optical device as claimed in claim 1, wherein forming a plurality of micro-damage areas on the skin surface or in human tissue comprises: Optical breakdown and / or microcavity and / or microburst effects are induced at designated locations.

5. The optical device according to claim 1, wherein: The size of the micro-damage area is less than 1 mm.

6. The optical device according to claim 1, wherein: If the laser wavelength is within the range of 527 nm to 537 nm, the size of the micro-damage region is less than 100 μm.

7. The optical device according to claim 1, wherein: The single pulse energy of the laser is 1 nJ to 1000 mJ.

8. The optical device according to claim 1, wherein: The focused spot diameter of the laser is less than 200 μm.

9. The optical device according to claim 1, wherein: The designated location includes the skin surface, or a predetermined depth under the skin.

10. The optical device according to claim 1, wherein: Also includes: A scanning control module is communicatively connected to the laser emission module and the focusing module, and is configured to set treatment parameters, wherein the treatment parameters include the single pulse energy, pulse train, output pulse width, and focus spot diameter of the laser.

11. The optical device according to claim 10, characterized in that The scanning control module is configured to adjust the focus spot diameter by controlling the focusing module to control the laser pulse energy irradiated on the skin.

12. The optical device according to claim 10, characterized in that The scanning control module is also configured to control the laser output by the laser emitting module to move within a designated area.

13. The optical device according to claim 10, characterized in that The scanning control module is also configured to control the laser output by the laser emitting module to move along a preset trajectory within a designated area.

14. The optical device according to claim 1, wherein: Also includes: The display and feedback module is configured to monitor treatment parameters and provide feedback on treatment results, wherein the treatment results include images of the lesion area, depth of the lesion area, and size of the lesion area.

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