Acne treatment laser hand tool with intelligent light spot switching function and laser treatment equipment

Abstract

The invention relates to the technical field of laser treatment, and discloses an acne treatment laser hand tool and laser treatment equipment capable of intelligently switching light spots, and the two ends of a lens cone are respectively provided with a laser entrance port and a treatment exit port; the light path unit comprises a laser unit, a beam expanding collimating lens group, a light spot switching device, a scanning galvanometer and an f-theta field lens which are arranged in sequence from a light path formed from the laser entrance port to the treatment exit port, and the light spot switching device comprises three switchable light spot lenses; the control unit is in communication connection with the laser unit, the light spot switching device and the scanning galvanometer, and the control unit can control the light spot switching device to switch the light spot lens so as to correspondingly form a single light spot scanning mode, a point-by-point lattice scanning mode and a two-dimensional lattice scanning mode. According to the invention, seamless integration of three treatment modes of a single light spot, a point-by-point dot matrix and a two-dimensional dot matrix in one hand tool is realized, and the clinical operation efficiency and the treatment experience are greatly improved.

Description

Technical Field

[0001] This invention relates to the field of laser treatment technology, and in particular to a laser handpiece and laser treatment device for acne treatment with intelligent spot switching. Background Technology

[0002] In existing technologies, acne laser treatment devices often face the limitation of having only one treatment mode. Traditional laser handpieces typically only provide a single-size circular spot or fractional pattern, making it impossible to integrate multiple treatment functions into a single device. When the treatment process requires switching spot modes, the operator often needs to pause the treatment and manually change different treatment heads or optical lenses. For example, while the existing patent CN220513284U achieves spot mode switching, it still requires manual disassembly of the lens, a cumbersome process that can easily lead to contamination or damage to the precision optical lens assembly; patent CN115282497A switches by manually rotating a microlens disk, which also suffers from inconvenience and low efficiency.

[0003] This traditional "stamp-style" treatment method not only disrupts the continuity of treatment and reduces efficiency, but also fails to achieve intelligent and adaptive treatment for different acne lesions (such as overt acne, acne marks, and scars). Summary of the Invention

[0004] The purpose of this invention is to provide an intelligent spot-switching laser handpiece and laser treatment device for acne treatment, aiming to solve or improve at least one of the above-mentioned technical problems.

[0005] To achieve the above objectives, the present invention provides the following solution: The present invention provides an intelligent spot-switching laser handpiece for acne treatment, comprising: The endoscope tube has a laser inlet and a treatment outlet at each end; The optical path unit includes a laser unit, a beam expander collimator group, a spot switching device, a scanning galvanometer, and an f-θ field mirror arranged sequentially along the optical path formed from the laser inlet to the treatment outlet. The spot switching device includes three switchable spot lenses. The control unit is communicatively connected to the laser unit, the spot switching device, and the scanning galvanometer. The control unit can control the spot switching device to switch the spot lens to form a single spot scanning mode, a point-to-point array scanning mode, and a two-dimensional array scanning mode.

[0006] Optionally, the spot switching device includes: A lens receiving compartment is provided on the lens barrel; A multi-section electric actuator is installed inside the lens receiving chamber, and multiple output rods of the multi-section electric actuator are respectively connected to spot lenses; A driving component is used to drive the multi-section electric push rod to slide along the optical path.

[0007] Optionally, the side wall of the lens barrel is provided with a connected transverse sliding hole and a longitudinal sliding hole. The transverse sliding hole is parallel to the sliding direction of the lens receiving chamber to avoid the sliding of the output end rod of the electric push rod. The longitudinal sliding hole is used to prevent the spot lens from entering and exiting the lens barrel.

[0008] Optionally, a lens detector is also included to detect the position of the light spot lens and feed it back to the control unit.

[0009] Optionally, in the single-spot scanning mode, the spot lens generates a circular spot with an adjustable size of 1-5mm, and the spot size is dynamically adjusted by the sliding of the spot lens in conjunction with the lens housing.

[0010] Optionally, in the point-to-point scanning mode, the spot lens focuses the light beam into a micro-spot with a diameter of 100μm, which is then scanned point-to-point by the scanning galvanometer to form a sequential or random dot matrix.

[0011] Optionally, in the two-dimensional dot matrix scanning mode, the spot lens divides the light beam into multiple micro-spots, which are then scanned by the scanning galvanometer to form a two-dimensional dot matrix.

[0012] Optionally, the scanning galvanometer includes an X-mirror and a Y-mirror, each driven by a galvanometer motor.

[0013] Optionally, the treatment exit port of the endoscope tube is provided with a limiting bracket.

[0014] The present invention also provides a laser treatment device, including the aforementioned intelligent spot-switching laser handpiece for acne treatment.

[0015] This invention discloses the following technical effects: By integrating the laser unit, beam expander collimator group, automatic switching device with three types of light spot lenses, scanning galvanometer, f-θ field lens, and control unit into a single handpiece, and coordinating and controlling them all within the handpiece tube, seamless integration of single-spot, point-to-point, and two-dimensional point-to-point treatment modes is achieved within a single handpiece. One-button automatic switching is enabled via the control unit, avoiding the inconvenience, inefficiency, and contamination risks associated with manual operation. The three modes target different types of skin problems, such as localized visible acne, stubborn acne scars, and large-area skin rejuvenation, making treatment more targeted and effective, and significantly improving clinical operation efficiency and treatment experience. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the electric push rod and multiple light spot mirrors of the present invention; Figure 3 This is a cross-sectional view of the present invention; Figure 4 This is a schematic diagram of the transverse and longitudinal sliding hole structures of the present invention; Figure 5 This is the control flowchart of the present invention; Figure 6 This is a schematic diagram of the single-spot scanning mode of the present invention; Figure 7 This is a schematic diagram of the point-to-point dot matrix scanning mode of the present invention; Figure 8 This is a schematic diagram of the two-dimensional dot matrix scanning mode of the present invention.

[0017] In the diagram: 1. Lens tube; 2. Laser unit; 3. Beam expander and collimator lens group; 4. Beam spot switching device; 41. Lens housing; 42. Drive unit; 421. Motor; 422. Lead screw; 423. Guide rod; 424. Slider; 425. Limiting seat; 43. Electric push rod; 5. Scanning galvanometer; 51. X-galvanometer; 52. Y-galvanometer; 6. f-θ field lens; 7. Beam spot lens; 8. Lateral sliding hole; 9. Longitudinal sliding hole; 10. Limiting bracket. Detailed Implementation

[0018] 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, and 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.

[0019] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] Reference Figures 1 to 8 This invention provides a laser handpiece for acne treatment with intelligent spot switching, comprising: The end tube 1 has a laser inlet and a treatment outlet at each end; The optical path unit includes a laser unit 2, a beam expander collimator group 3, a spot switching device 4, a scanning galvanometer 5, and an f-θ field mirror 6 arranged sequentially from the laser inlet to the treatment outlet. The spot switching device 4 includes three switchable spot lenses 7. The control unit is communicatively connected to the laser unit 2, the spot switching device 4, and the scanning galvanometer 5. The control unit can control the spot switching device 4 to switch the spot lens 7 to form a single spot scanning mode, a point-by-point matrix scanning mode, and a two-dimensional matrix scanning mode.

[0021] By integrating the laser unit, beam expander collimator group, automatic switching device with three types of light spot lenses, scanning galvanometer, f-θ field lens and control unit into the lens barrel, and coordinating and controlling them in a unified manner by the control unit, the problems of inconvenient operation and low efficiency are solved.

[0022] Furthermore, the laser unit 2 has a laser wavelength of 300-2000nm, which can be adapted to various lasers of different wavelengths, broadening the range of indications and addressing a variety of common facial skin problems such as freckle removal, acne treatment, scar repair, wrinkle removal, and skin rejuvenation.

[0023] Furthermore, the types of light spot lenses 7 are not limited to the three types described in this invention, and various functional lenses can be added according to different treatment needs.

[0024] In one embodiment of the present invention, the spot switching device 4 includes: A lens receiving compartment 41 is disposed on the lens barrel 1; A multi-section electric actuator 43 is installed inside the lens receiving chamber 41, and multiple output rods of the multi-section electric actuator 43 are respectively connected to the spot lens 7. The driving component 42 is used to drive the multi-section electric push rod 43 to slide along the optical path.

[0025] Through the coordinated action of the lens housing 41, the drive unit 42 and the multi-section electric push rod 43, the precise, stable and automated switching of various light spot lenses 7 in the optical path is achieved, with a compact structure and high reliability.

[0026] Furthermore, such as Figure 2 As shown, the driving component 42 includes a motor 421, a lead screw 422, a guide rod 423, and a slider 424. The slider 424 is connected to the multi-section electric push rod 43. The slider 424 is threadedly engaged with the lead screw 422. The slider 424 is also slidably engaged with the guide rod 423 to guide and limit the transmission of the lead screw 422. The output shaft of the motor 421 is connected to the lead screw 422 to drive the lead screw 422 to rotate. Limit seats 425 are provided at both ends of the lead screw 422 to prevent the multi-section electric push rod 43 from falling off.

[0027] In one embodiment of the present invention, such as Figure 4As shown, the side wall of the lens barrel 1 is provided with a connected transverse sliding hole 8 and a longitudinal sliding hole 9. The transverse sliding hole 8 is parallel to the sliding direction of the lens receiving chamber 41 to avoid the sliding of the output end rod of the electric push rod 43. The longitudinal sliding hole 9 is used to avoid the light spot lens 7 from entering and exiting the lens barrel 1.

[0028] The specific design of the transverse sliding hole 8 and the longitudinal sliding hole 9 on the side wall of the lens barrel 1 provides precise guidance and clearance space for the movement of the electric push rod 43 and the spot lens 7, ensuring that the spot lens 7 can smoothly and accurately enter and exit the optical path during the switching process, while maintaining the integrity and sealing of the lens barrel 1.

[0029] In one embodiment of the present invention, a lens detector is also included for detecting the position of the light spot lens 7 and feeding it back to the control unit.

[0030] By adding a lens detector, a closed-loop detection system for the position of the light spot lens 7 was constructed, which can feed back the real-time position of the light spot lens 7 to the control unit, ensuring the final accuracy of the switching action, thereby guaranteeing the quality of the optical path and the accuracy of the treatment parameters, and improving the safety and reliability of the system.

[0031] In one embodiment of the invention, the lens detector is a Hall sensor combined with a magnet, with a small permanent magnet mounted on the lens mount. The Hall sensor is mounted on a fixed circuit board. When the lens mount moves to a specific position, the magnet approaches the corresponding Hall sensor, which detects the change in magnetic field strength (or direction) and outputs a digital electrical signal (high or low level) or an analog signal (voltage value).

[0032] In one embodiment of the present invention, in the single-spot scanning mode, the spot lens 7 generates a circular spot with an adjustable size of 1-5mm. The size of the spot is dynamically adjusted by the sliding of the spot lens 7 in conjunction with the lens housing 41. In the single-spot scanning mode, the spot lens 7 is a focusing lens.

[0033] In one embodiment of the present invention, in single spot mode, the dynamic and continuous adjustment of the spot size within a range of 1-5mm is achieved by the sliding cooperation of two sets of lenses in the spot lens 7 and the lens housing 41. The two sets of lenses can be two plano-convex lenses arranged with their convex surfaces facing each other and their bodies parallel. Dynamic focusing can dynamically compensate for the optical path difference at different positions. The focal point position can be freely changed during treatment, enabling focusing on the curved surface of the cheek, areas above the skin, and deep layers of the skin. This allows doctors to adjust the spot size in real time according to the actual size of the acne lesions, achieving precise treatment that targets the affected area, avoiding energy waste or insufficient treatment. It is especially suitable for complex areas such as curved facial surfaces.

[0034] like Figure 6As shown, after the laser beam output passes through the beam expander collimator group 3, the spot switching device 4 selects the focusing lens to focus the beam into a spot with an adjustable diameter of 1-5mm. The size adjustment is achieved by the focusing lens in conjunction with the drive component 42. During intelligent treatment, the spot quickly locks onto the lesion, and the sliding device moves back and forth continuously to generate a spot that adapts to the size of the lesion. Then, through the directional movement of the galvanometer, the treatment spot is output onto the lesion.

[0035] In one embodiment of the present invention, in the point-to-point scanning mode, the spot lens 7 focuses the light beam into a micro-spot with a diameter of 100 μm, which is then scanned point-to-point by the scanning galvanometer 5 to form a sequential or random dot matrix. In the point-to-point scanning mode, the spot lens 7 is a high-focusing lens.

[0036] The point-to-point fractional scanning mode generates 100μm microspots and performs sequential or random scanning, enabling minimally invasive treatment of the skin. In particular, the random scanning mode can effectively avoid the heat accumulation of adjacent microspots over time, prevent local overheating, and reduce the risk of thermal damage to the skin. It is especially suitable for treating lesions such as acne marks and scars that require high-precision energy control.

[0037] like Figure 7 As shown, after the laser beam output passes through the beam expander and collimator lens group 2, the spot switching device 4 selects a high-focusing lens to focus the beam into a spot with a diameter of 100μm. Then, it passes through the scanning galvanometer 5 to output the dot matrix point by point. This mode can effectively target stubborn lesions such as acne marks and scars. The disordered mode avoids local overheating damage.

[0038] In one embodiment of the present invention, in the two-dimensional dot matrix scanning mode, the spot lens 7 divides the light beam into multiple micro-spots, which are then scanned by the scanning galvanometer 5 to form a two-dimensional dot matrix. In the two-dimensional dot matrix scanning mode, the spot lens 7 is a microlens array.

[0039] The two-dimensional fractional scanning mode utilizes a microlens array to generate multiple micro-spots in a single pass, forming a static, regularly arranged array of dots—the first array. The beam is then rapidly deflected by the scanning galvanometer 5, dynamically scanning to form a two-dimensional array. This significantly improves the coverage speed of the treatment area. This mode is suitable for large-area treatment needs such as full-face skin rejuvenation, ensuring uniform treatment results while significantly shortening treatment time.

[0040] In one embodiment of the present invention, such as Figure 8 As shown, after the laser beam output passes through the beam expander collimator group 2, the spot switching device 4 selects an N×N circular microlens array lens. After passing through the microlens array, an N×N light spot array is generated. Then, after the galvanometer vibrates regularly, an M×M first array of sequentially appearing light spots is output, thus forming an M×M×N×N two-dimensional array. This mode is convenient for large-area rapid scanning and full-face skin rejuvenation.

[0041] In one embodiment of the present invention, the scanning galvanometer 5 includes an X galvanometer 51 and a Y galvanometer 52, which are driven by a galvanometer motor, respectively.

[0042] The scanning galvanometer 5 uses X-mirror 51 and Y-mirror 52, which are driven by motors respectively, to achieve high-speed and flexible deflection of the beam in a two-dimensional plane. This enables the system to execute complex preset scanning paths, intelligently lock onto and cover lesion areas with irregular shapes, and improve the flexibility and comprehensiveness of treatment.

[0043] In one embodiment of the present invention, a limiting bracket 10 is provided at the treatment outlet of the endoscope tube 1.

[0044] Setting a limiting bracket 10 at the treatment outlet ensures that the handpiece and the patient's skin always maintain the optimal and safe treatment distance. This prevents inaccurate focusing or excessive energy caused by too close a distance, and avoids energy attenuation caused by too far a distance, thus ensuring the consistency of treatment effect and the safety of operation.

[0045] Furthermore, it also includes a visual sensing unit, which contains a camera that can quickly capture photos of the treatment area to acquire images of the treatment area and feed them back to the control unit.

[0046] When this handpiece is placed in the treatment area, the visual sensing unit acquires an image of the treatment area and feeds the image information back to the control unit. The control unit calculates the laser dosage based on an intelligent algorithm and transmits the adjusted parameter signal to the laser unit. The laser unit 2 outputs the laser parameters. At the same time, the control unit sends program signals to the spot switching device 4 and the galvanometer motor according to the currently selected scanning mode. The spot switching device 4 controls the drive unit 42 and the multi-section electric push rod 43 to transport the spot lens 7 to the designated position according to the signal. The lens detector detects the position of the spot lens 7 and finally feeds it back to the control unit. The galvanometer motor controls the X galvanometer 51 and Y galvanometer 52 to perform directional movement according to the instructions of the control unit, intelligently locking the lesion area and generating a scanning spot.

[0047] The present invention also provides a laser treatment device, including the above-mentioned intelligent spot-switching acne treatment laser handpiece.

[0048] Integrating the aforementioned laser handpiece into the laser therapy equipment gives the entire device multifunctional, intelligent, and highly efficient treatment capabilities, thus broadening the scope of its clinical applications.

[0049] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0050] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A laser handpiece for acne treatment with intelligent spot switching, characterized in that, include: The end tube (1) is provided with a laser inlet and a treatment outlet at both ends; The optical path unit includes a laser unit (2), a beam expander collimator group (3), a spot switching device (4), a scanning galvanometer (5), and an f-θ field lens (6) arranged sequentially from the laser inlet to the treatment outlet. The spot switching device (4) includes three switchable spot lenses (7). The control unit is communicatively connected to the laser unit (2), the spot switching device (4) and the scanning galvanometer (5), wherein the control unit can control the spot switching device (4) to switch the spot lens (7) to form a single spot scanning mode, a point-by-point array scanning mode and a two-dimensional array scanning mode.

2. The acne treatment laser handpiece with intelligent spot switching according to claim 1, characterized in that, The light spot switching device (4) includes: A lens receiving compartment (41) is provided on the lens barrel (1); A multi-section electric push rod (43) is installed in the lens receiving chamber (41), and multiple output rods of the multi-section electric push rod (43) are respectively connected to the spot lens (7). The driving component (42) is used to drive the multi-section electric push rod (43) to slide along the optical path.

3. The acne treatment laser handpiece with intelligent spot switching according to claim 2, characterized in that, The side wall of the lens barrel (1) is provided with a connected transverse sliding hole (8) and a longitudinal sliding hole (9). The transverse sliding hole (8) is parallel to the sliding direction of the lens receiving chamber (41) to avoid the sliding of the output end rod of the electric push rod (43). The longitudinal sliding hole (9) is used to avoid the spot lens (7) from entering and exiting the lens barrel (1).

4. The acne treatment laser handpiece with intelligent spot switching according to claim 1, characterized in that, It also includes a lens detector for detecting the position of the light spot lens (7) and feeding it back to the control unit.

5. The acne treatment laser handpiece with intelligent spot switching according to claim 2, characterized in that, In the single-spot scanning mode, the spot lens (7) generates a circular spot with an adjustable size of 1-5mm. The size of the spot is dynamically adjusted by the sliding of the spot lens (7) in conjunction with the lens housing (41).

6. The acne treatment laser handpiece with intelligent spot switching according to claim 1, characterized in that, In the point-to-point scanning mode, the spot lens (7) focuses the light beam into a micro-spot with a diameter of 100μm, which is then scanned point-to-point by the scanning galvanometer (5) to form a sequential or disordered dot matrix.

7. The acne treatment laser handpiece with intelligent spot switching according to claim 1, characterized in that, In the two-dimensional dot matrix scanning mode, the light spot lens (7) divides the light beam into multiple micro-spots, which are then scanned by the scanning galvanometer (5) to form a two-dimensional dot matrix.

8. The acne treatment laser handpiece with intelligent spot switching according to claim 1, characterized in that, The scanning galvanometer (5) includes an X-mirror (51) and a Y-mirror (52) driven by a galvanometer motor, respectively.

9. The acne treatment laser handpiece with intelligent spot switching according to claim 1, characterized in that, The treatment outlet of the endoscope tube (1) is provided with a limiting bracket (10).

10. A laser treatment device, comprising an acne treatment laser handpiece with intelligent spot switching as described in any one of claims 1-9.

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