Light spot adjustment handpiece and laser spot removal system

Abstract

This invention discloses a laser spot adjustment handpiece, relating to the field of medical aesthetic devices. Its first housing houses a laser emitting device, and the first end of a second housing is connected to the second end of the first housing via a telescopic adjustment structure. This allows the second housing to be telescopically adjusted relative to the first housing, changing the distance between the opening at the second end of the second housing and the laser emitting device. This achieves the effect of adjusting the size of the laser spot on the area to be removed, ensuring the laser spot size completely covers the area, avoiding the spot covering excess skin tissue, and improving the precision and accuracy of laser spot removal. This invention also proposes a laser spot removal system, including the aforementioned laser spot adjustment handpiece and a laser emitting device housed within it. This system enables fine-tuning of the laser spot size, improving the precision of spot removal and effectively reducing damage to skin without blemishes caused by the laser.

Description

Technical Field

[0001] This invention relates to the field of medical aesthetic devices, and in particular to a light spot adjustment handpiece and a laser spot removal system. Background Technology

[0002] Laser freckle removal utilizes the selective photothermal effect, allowing photons of specific wavelengths to penetrate the epidermis and directly target the diseased tissue, generating a thermal effect that selectively destroys the diseased tissue, thereby effectively removing various pigmented spots on the face. Laser freckle removal not only effectively lightens or removes freckles, but the procedure often does not require hospitalization, involves small incisions, is minimally invasive, leaves no scars, and has no significant post-operative side effects, making it increasingly popular among those seeking cosmetic enhancements.

[0003] However, when using current laser treatment equipment for laser freckle removal, the laser spot size is fixed and generally cannot be finely adjusted. For some small spots, such as freckles around the eyelids or light yellow freckles on the cheeks, although a significant freckle removal effect can be achieved, the laser spot simultaneously covers a large area of ​​intact, spotless skin when irradiating the spot. This not only results in insufficient precision in freckle removal but also causes some damage to the spotless skin. Therefore, it is necessary to propose a laser treatment device that can achieve high-precision freckle removal to overcome the problem of the non-fine-adjustable laser spot size in existing laser treatment equipment, which leads to insufficient precision in freckle removal and easy damage to spotless skin. Summary of the Invention

[0004] The purpose of this invention is to provide a light spot adjustment handpiece and a laser spot removal system to solve the problem that the size of the laser spot in the existing laser treatment equipment cannot be finely adjusted, resulting in insufficient precision in spot removal and easy damage to skin without spots.

[0005] To achieve the above objectives, the present invention provides the following solution:

[0006] This invention provides a light spot adjustment handpiece, comprising:

[0007] A first housing has openings at both axial ends. The interior of the first end of the first housing is used to install a laser emitting device. The side wall of the first housing is provided with a fixing component for fixing the laser emitting device. The laser emitting device is capable of emitting a laser for removing freckles toward the second end of the first housing.

[0008] The second housing has openings at both axial ends. The first end of the second housing is connected to the second end of the first housing via a telescopic adjustment structure. The second end of the second housing has a support member for supporting the second end of the second housing above the blemish to be removed. The second housing is coaxially arranged with the blemish-removing laser, so that the blemish-removing laser irradiates the blemish to be removed through the opening at the second end of the second housing, forming a laser spot on the blemish. The telescopic adjustment structure is used to extend and retract relative to the first housing, changing the distance between the opening at the second end of the second housing and the laser emitting device, and adjusting the size of the laser spot to just completely cover the blemish to be removed.

[0009] Optionally, the telescopic adjustment structure is a threaded adjustment mechanism, which includes:

[0010] An external thread is provided on the outer wall of the second end of the first housing.

[0011] An internal thread is provided on the inner wall of the second housing. The second housing is coaxially arranged with the first housing, and the first end of the second housing is sleeved outside the second end of the first housing and threadedly connected to the external thread through the internal thread. By rotating the second housing, the second housing can be extended and retracted relative to the first housing, and the size of the laser spot can be adjusted to just completely cover the spot to be removed.

[0012] Optionally, a friction rubber ring is fitted on the outer wall of the first housing. The outer ring of the friction rubber ring is used to make frictional contact with the inner wall of the second housing to increase the frictional force when the second housing and the first housing are extended and retracted.

[0013] Optionally, the first housing includes an inner housing and an outer housing. The inner housing has openings at both axial ends. The first end of the first housing is used to install a laser emitting device. The fixing member is provided on the side wall of the first end of the first housing. The outer housing is fitted over the second end of the inner housing, forming an annular gap with the inner housing. The first end of the outer housing is closed and connected to the outer wall of the inner housing by an annular plate. The second end of the outer housing is flush with the second end of the inner housing. The telescopic adjustment structure includes:

[0014] A spiral channel is formed on the side wall of the first housing, and a plurality of notches are formed on the edge of the spiral channel near the second end of the first housing.

[0015] A protrusion is provided on the inner edge of the first end of the second housing. The second housing is movably sleeved in the annular gap. The protrusion slides with the spiral channel and can be fixed in position by being embedded in any of the notches.

[0016] An elastic clamping mechanism is disposed between the first end of the second housing and the annular plate. The elastic clamping mechanism is used to further clamp the first end of the second housing after the protrusion is embedded in the corresponding notch.

[0017] Optionally, the elastic clamping mechanism includes a spring and a washer, one end of the spring is fixedly connected to the annular plate, and the other end of the spring is connected to the washer. The washer is used to press the first end of the second housing under the pressure of the spring.

[0018] Optionally, multiple sets of the elastic clamping mechanisms are provided within the annular gap, and all the elastic clamping mechanisms are evenly distributed circumferentially around the outer periphery of the inner shell.

[0019] Optionally, the second end of the second housing is a conical structure; the support member is an arc-shaped plate, and one axial end of the arc-shaped plate is connected to the small end of the conical structure.

[0020] Optionally, the fixing member is located near the first end opening of the first housing. The fixing member includes a plurality of pin screws distributed circumferentially along the first housing. Each pin screw penetrates the side wall of the first housing and is threadedly connected to the side wall of the first housing. A rubber pad is connected to the end of each pin screw located inside the first housing.

[0021] Meanwhile, the present invention proposes a laser freckle removal system, including a laser emitting device and a spot adjustment hand as described in any of the above. The laser emitting device is installed inside the first end of the first housing and is fixed and locked by the fixing member. The laser emitting device is used to emit a freckle removal laser toward the freckle to be removed and form a laser spot of a corresponding size at the freckle to be removed.

[0022] Optionally, the laser emitting device includes:

[0023] A fixed cylinder, the first end of which is fixed to the inside of the first end of the first housing by the fixing member;

[0024] The adjustment cylinder is provided in multiple ways. The first end of any one of the adjustment cylinders can be threaded to the second end of the fixed cylinder. A convex lens is installed at the second end of any one of the adjustment cylinders. The focal length of the convex lens installed on different adjustment cylinders is different. The outer surface of any one of the convex lenses is covered with a high-transmittance film. The thickness of the high-transmittance film on different convex lenses is different.

[0025] A laser source is disposed inside the fixed cylinder and is used to emit laser light toward the convex lens.

[0026] The present invention achieves the following technical effects compared to the prior art:

[0027] The laser spot adjustment handpiece proposed in this invention has a novel and reasonable structure. A first housing houses the laser emitting device, and the first end of a second housing is connected to the second end of the first housing via a telescopic adjustment mechanism. This allows the second housing to be telescopically adjusted relative to the first housing, changing the distance between the second end opening (laser emission outlet) of the second housing and the laser emitting device. This achieves the effect of adjusting the size of the laser spot on the area to be removed, ensuring the laser spot size completely covers the area and avoids covering excess skin tissue, thus improving the precision and accuracy of laser spot removal. Through the telescopic adjustment mechanism, this invention achieves precise telescopic adjustment of the second housing. It allows the first housing and the laser emitting device within it to be moved closer to or further away from the second end opening of the second housing according to the size of the area to be removed, achieving fine adjustment of the laser spot size and effectively reducing damage to skin without blemishes.

[0028] In some of the technical solutions disclosed in this invention, the second housing and the first housing are connected and telescopically adjusted through an internal and external thread structure. The relative telescopic adjustment between the second housing and the first housing can be achieved by rotating the second housing, and the adjustment accuracy is high. The axial telescopic degree of the second housing is precisely controlled, and the thread structure itself has a self-locking function, which further improves the stability and convenience of the telescopic adjustment process between the second housing and the first housing. While ensuring the precision of laser spot removal, the effect of spot adjustment is improved.

[0029] In some technical solutions disclosed in this invention, the second shell and the inner shell of the first shell achieve a sliding fit through a spiral channel and a protrusion structure. By opening a notch in the spiral channel and setting an elastic clamping mechanism in the annular gap between the outer shell and the inner shell, the position of the second shell and the inner shell is locked. This adjustment scheme is based on the spiral trend of the spiral channel. The relative expansion and contraction adjustment between the second shell and the first shell can be achieved by rotating the second shell. The adjustment accuracy is high, and the axial expansion and contraction of the second shell is precisely controlled. During positioning, the protrusion and the notch are matched and the elastic clamping mechanism is used to clamp, making the locking and positioning more reliable. There will be no relative torsion of the second shell relative to the first shell during laser treatment, which is more reliable and more conducive to the efficient performance of laser freckle removal surgery.

[0030] The laser freckle removal system proposed in this invention includes the aforementioned spot adjustment handpiece and a laser emitting device disposed within the handpiece. Through the setting of the telescopic adjustment mechanism, the system realizes the telescopic and fine adjustment of the second housing. It can move the first housing and the laser emitting device therein away from or closer to the second end opening of the second housing according to the size of the freckle to be removed, thereby achieving fine adjustment of the laser spot size, improving the precision of freckle removal, and thus effectively reducing the damage caused by the laser to the freckle-free skin. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the laser freckle removal system disclosed in Embodiment 1 of the present invention;

[0033] Figure 2 This is an axial cross-sectional view of the laser freckle removal system disclosed in Embodiment 1 of the present invention;

[0034] Figure 3 This is a partial cross-sectional view of the first housing in the laser freckle removal system disclosed in Embodiment 1 of the present invention;

[0035] Figure 4 This is a schematic diagram of the structure of the inner shell in the first shell disclosed in Embodiment 1 of the present invention;

[0036] Figure 5 This is a schematic diagram of the laser freckle removal system disclosed in Embodiment 2 of the present invention;

[0037] Figure 6This is an axial cross-sectional view of the laser freckle removal system disclosed in Embodiment 2 of the present invention.

[0038] The attached figures are labeled as follows:

[0039] 1. First housing; 2. Second housing; 3. Support component; 4. Inner housing; 5. Outer housing; 6. Annular gap; 7. Annular plate; 8. Helical channel; 9. Notch; 10. Protrusion; 11. Spring; 12. Washer; 13. Conical structure; 14. Ejector screw; 15. Rubber pad; 16. Friction rubber ring; 17. Fixing cylinder; 18. Adjusting cylinder; 19. Convex lens. Detailed Implementation

[0040] 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.

[0041] One of the objectives of this invention is to provide a laser spot adjustment handpiece to solve the problem that the size of the laser spot in existing laser treatment equipment cannot be finely adjusted, resulting in insufficient precision in spot removal and easy damage to skin without spots.

[0042] Another object of the present invention is to provide a laser spot removal system having the above-mentioned spot adjustment handpiece.

[0043] 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.

[0044] Example 1

[0045] like Figures 1-4 As shown, this embodiment provides a light spot adjustment handpiece, which includes a first housing 1 and a second housing 2. Both the first housing 1 and the second housing 2 are preferably cylindrical housings. The first housing 1 has openings at both axial ends. The first end of the first housing 1 (… Figures 1-4 The top end (as shown) is used to install a laser emitting device. A fixing member for securing the laser emitting device is provided on the side wall of the first housing 1. The laser emitting device is used to face the second end (as shown) of the first housing 1. Figures 1-4 The bottom end shown emits a laser for removing freckles; both ends of the second housing 2 are also open, and the first end of the second housing 2 (shown) Figures 1-2 The top end shown is connected to the second end of the first housing 1 via a telescopic adjustment structure, and the second end of the second housing 2 ( Figures 1-2The bottom end (as shown) is provided with a support member 3 for supporting the second end of the second housing 2 above the freckle to be removed. The second housing 2, the first housing 1, and the freckle removal laser are arranged coaxially so that the freckle removal laser passes through the second end of the second housing 2 ( Figures 1-2 The bottom opening (as shown) irradiates the patch to be removed, forming a laser spot on the patch; the aforementioned telescopic adjustment structure is used to telescopically adjust the second housing 2 relative to the first housing 1, so that the second end (as shown) of the second housing 2 ( Figures 1-2 The distance between the bottom opening (shown) and the laser emitting device changes, thereby adjusting the size of the laser spot to just completely cover the spot to be removed. In most cases, the laser spot area needs to be reduced to remove small spots around the eyelid. At this time, the second housing 2 needs to be moved away from the first housing 1 by the telescopic adjustment structure so that the second end opening of the second housing 2 is away from the laser emitting device, thereby reducing the laser spot area.

[0046] In this embodiment, as Figures 2-4 In this embodiment, the first housing 1 is a double-layered housing structure, comprising an inner housing 4 and an outer housing 5. Both axial ends of the inner housing 4 are open. The first end of the first housing 1 (… Figure 2 and Figure 3 The top of the first housing 1 is used to install a laser emitting device. Figure 2 and Figure 3 The aforementioned fastener is provided on the side wall of the top (shown). The outer shell 5 is fitted over the inner shell 4 and is located below the fastener. An annular gap 6 is formed between the outer shell 5 and the inner shell 4. The first end of the outer shell 5 (shown) Figure 2 and Figure 3 The top shown is lower than the first end of the inner shell 4. Figure 2 and Figure 3 The top shown), and the first end of the outer shell 5 is closed and connected to the outer wall of the inner shell 4 by an annular plate 7, the second end of the outer shell 5 ( Figure 2 and Figure 3 The bottom end shown) and the second end of the inner shell 4 ( Figure 2 and Figure 3 The bottom end shown is flush with the surface. Based on the above structure, the telescopic adjustment structure of this embodiment is specifically configured to include a spiral channel 8, a protrusion 10, and an elastic pressing mechanism. The spiral channel 8 is opened on the side wall of the first housing 1, and several notches 9 are opened on the edge of the spiral channel 8 near the second end of the first housing 1. Generally, one protrusion 10 is provided, which is located on the inner edge of the first end of the second housing 2. The second housing 2 is movably fitted into the annular gap 6, and the protrusion 10 slides with the spiral channel 8, and can be fixed in position by embedding into any one of the notches 9. The elastic pressing mechanism is located at the first end of the second housing 2 ( Figure 2and Figure 3 Between the top end shown and the annular plate 7, an elastic clamping mechanism is used to further clamp the first end of the second housing 2 with elastic force after the protrusion 10 is embedded in the corresponding notch 9. Figure 2 and Figure 3 (as shown at the top) to prevent the protrusion 10 on the second housing 2 from coming out of the notch 9.

[0047] In this embodiment, the above-mentioned elastic pressing mechanism includes a spring 11 and a washer 12. One end of the spring 11 is fixedly connected to the annular plate 7, and the other end of the spring 11 is connected to the washer 12. The washer 12 is preferably an elastic washer, used to press the first end of the second housing 2 under the pressure of the spring 11. Figure 2 and Figure 3 The top is shown to ensure that the protrusion 10 on the second housing 2 is securely embedded in the corresponding notch 9.

[0048] In this embodiment, multiple sets of elastic clamping mechanisms can be set simultaneously within the annular gap 6, and all elastic clamping mechanisms are evenly distributed around the outer periphery of the inner shell 4. The even distribution of multiple sets of elastic clamping mechanisms allows for multi-point pressure on the second shell 2, ensuring uniform force application and improving the clamping force on the second shell 2.

[0049] In this embodiment, as Figure 1 and Figure 2 As shown, the second end of the second housing 2 ( Figure 2 and Figure 3 The bottom end shown is configured as a conical structure 13, with the smaller end of the conical structure 13 facing downwards; the support member 3 is an arc-shaped plate, the axis of which coincides with the axis of the second housing 2, and one axial end of the arc-shaped plate is connected to the smaller end of the conical structure 13. In use, the other axial end of the arc-shaped plate is used to contact the skin, serving to indicate the location of the plaque and hold the second end of the second housing 2 (…). Figure 2 and Figure 3 The function of the distance between the bottom end shown and the plaque to be removed, during the operation, the second end of the second shell 2 ( Figure 2 and Figure 3 The distance between the bottom end shown and the plaque to be removed remains constant, and this distance value is the axial length value of the curved plate.

[0050] In this embodiment, the fastener is located near the first end of the inner housing 4. Figure 2 and Figure 3The top of the inner housing 4 has an opening, and the fastener includes multiple pin screws 14 spaced circumferentially along the inner housing 4. Each pin screw 14 penetrates the side wall of the inner housing 4 and is threaded to the side wall. A rubber pad 15 is connected to the end of each pin screw 14 located inside the inner housing 4. Tightening the pin screws 14 secures the laser emitting device installed inside the inner housing 4; conversely, loosening the pin screws 14 allows for disassembly of the laser emitting device. The rubber pads 15 at the ends of the pin screws 14 increase the friction between the rubber pads 15 and the laser emitting device, improving the tightening effect of the pin screws 14 on the laser emitting device, while also preventing hard contact between the pin screws 14 and the outer wall of the laser emitting device, thus avoiding damage to the outer wall.

[0051] The light spot adjustment handpiece proposed in this technical solution has a novel and reasonable structure. The second housing 2 and the inner housing 4 of the first housing 1 are connected by a sliding fit between a spiral channel 8 and a protrusion 10 to achieve telescopic adjustment. By opening a notch 9 on the spiral channel 8 and setting an elastic pressing mechanism in the annular gap 6 between the outer housing 5 and the inner housing 4, the position between the second housing 2 and the inner housing 4 is locked. This adjustment scheme is based on the spiral trend of the spiral channel 8. When the position of the second housing 2 needs to be adjusted, hold the conical structure 13 of the second housing 2 and push the second housing 2 towards the first end (top) of the first housing 1, so that the spring 11 is compressed. The protrusion 10 on the second housing 2 disengages from the corresponding notch 9 and enters the spiral channel 8. Then, rotate the second housing 2, and the protrusion 10 slides in the spiral channel 8 along the trend of the spiral channel 8. After the second housing 2 is adjusted to the position, remove the pushing force on the second housing 2, and the protrusion 10 is embedded in the corresponding notch 9. The compressed spring 11 is reset and presses the second housing 2. This completes one extension and retraction adjustment of the second housing 2. The extension and retraction adjustment mechanism, consisting of the spiral channel 8, protrusion 10, notch 9, and elastic clamping mechanism, adjusts the second housing 2 with high precision and accurate control over its axial extension and retraction. During positioning, the protrusion 10 engages with the notch 9 and is clamped by the elastic clamping mechanism, ensuring more reliable locking and preventing relative torsion of the second housing 2 relative to the first housing 1 during laser treatment. This higher reliability is more conducive to the efficient execution of laser freckle removal surgery.

[0052] Therefore, the laser spot adjustment handpiece proposed in this technical solution can adjust the size of the laser spot on the spot by changing the distance between the second end opening (laser emission outlet) of the second housing 2 and the laser emitting device according to the size of the spot to be removed. This ensures that the laser spot size completely covers the spot, avoiding the spot covering excess skin tissue and improving the precision and accuracy of laser spot removal. The telescopic adjustment mechanism used in the above solution enables fine adjustment of the telescopic extension of the second housing 2, moving the first housing 1 and the laser emitting device inside it away from or closer to the second end opening of the second housing 2. This allows for precise adjustment of the laser spot size and effectively reduces damage to skin without spots.

[0053] Example 2

[0054] like Figures 5-6 As shown, this embodiment provides a light spot adjustment handpiece, which differs from Embodiment 1 in that the first housing 1 and the telescopic adjustment structure are different. In this embodiment, the first housing 1 is a single-layer tube structure, and the first end of the second housing 2 is directly sleeved on the outside of the second end of the first housing 1. Regarding the telescopic adjustment structure, this embodiment specifically adopts a threaded adjustment mechanism, that is, an external thread is provided on the outer wall of the second end of the first housing 1, and an internal thread is provided on the inner wall of the second housing 2. The second housing 2 and the first housing 1 are connected and telescopically adjusted through the cooperation of the internal and external thread structures. The relative telescopic adjustment between the second housing 2 and the first housing 1 can be achieved by rotating the second housing 2, and the adjustment accuracy is high. The axial telescopic degree of the second housing 2 is precisely controlled, and the threaded structure itself has a self-locking function, further improving the stability and convenience of the telescopic adjustment process between the second housing 2 and the first housing 1. While ensuring the precision of laser spot removal, the effect of light spot adjustment is improved.

[0055] Example 3

[0056] This embodiment provides a laser freckle removal system, including a laser emitting device and a spot adjustment hand as disclosed in Embodiment 1 or Embodiment 2. The laser emitting device is installed inside the first end of the first housing 1 and is fixed and locked by a pin screw 14. The laser emitting device is used to emit a freckle removal laser toward the freckle to be removed and form a laser spot of a corresponding size at the freckle to be removed.

[0057] In this embodiment, the aforementioned laser emitting device includes a fixed cylinder 17, an adjusting cylinder 18, and a laser source. The first end (top) of the fixed cylinder 17 is fixed to the inside of the first end of the first housing 1 by a pin screw 14. Multiple adjusting cylinders 18 are provided, and the first end (top) of any adjusting cylinder 18 can be threadedly connected to the second end (bottom) of the fixed cylinder 17. A convex lens 19 is installed at the second end (bottom) of each adjusting cylinder 18, and the focal lengths of the convex lenses 19 installed on different adjusting cylinders 18 are different. The outer surface of each convex lens 19 is covered with a high-transparency film, and the thickness of the high-transparency film on different convex lenses 19 is different. The laser source is located inside the fixed cylinder 17 and is used to emit a laser beam toward the convex lens 19. After passing through the convex lens 19, the laser beam forms a focused beam, which illuminates the skin to form a circular spot. By threading different adjusting cylinders 18 to the fixed cylinder 17, different focused beams can be obtained. Taking the setting of three convex lenses 19 as an example, the focal lengths of the three convex lenses 19 are 50mm, 100mm and 150mm respectively. The thickness of the high-transmittance film deposited on the different convex lenses 19 is different, which can be 532nm, 755nm and 1064nm respectively.

[0058] The laser freckle removal system proposed in this technical solution can adjust the size of the laser spot using a spot adjustment handpiece. Specifically, by setting up a telescopic adjustment mechanism in the spot adjustment handpiece, the telescopic adjustment of the second shell is achieved. Depending on the size of the freckle to be removed, the first shell and the laser emitting device inside it can be moved away from or closer to the second end opening of the second shell, thus achieving fine adjustment of the laser spot size, improving the precision of freckle removal, and effectively reducing the damage caused by the laser to skin without freckles.

[0059] It should be noted that, for those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0060] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A light spot adjustment handpiece, characterized in that, include: The first housing includes an inner housing and an outer housing. The inner housing has openings at both axial ends. A laser emitting device is installed inside the first end of the inner housing. A fixing member for fixing the laser emitting device is provided on the side wall of the first end of the inner housing. The laser emitting device can emit a laser for freckle removal towards the second end of the inner housing. The outer housing is sleeved on the outside of the second end of the inner housing, forming an annular gap with the inner housing. The first end of the outer housing is closed and connected to the outer wall of the inner housing by an annular plate. The second end of the outer housing is flush with the second end of the inner housing. The second housing has openings at both axial ends. The first end of the second housing is connected to the second end of the first housing via a telescopic adjustment structure. The second end of the second housing is provided with a support member, which is an arc-shaped plate. The axis of the arc-shaped plate coincides with the axis of the second housing. The distance between the second end of the second housing and the patch to be removed remains constant, and this distance is the axial length of the arc-shaped plate. The second housing is coaxially arranged with the laser used for spot removal, so that the laser irradiates the patch to be removed through the opening at the second end of the second housing, forming a laser spot on the patch. The telescopic adjustment structure is used to telescopically adjust the second housing relative to the first housing, so as to change the distance between the second end opening of the second housing and the laser emitting device, and to adjust the size of the laser spot to just completely cover the patch to be removed; the telescopic adjustment structure includes a spiral channel, a protrusion, and an elastic clamping mechanism. The spiral channel is opened on the side wall of the inner housing, and several notches are opened on the edge of the spiral channel near the second end of the first housing; one protrusion is provided, which is located on the inner wall edge of the first end of the second housing, and the second housing is movably fitted within the annular gap. The protrusion slides with the spiral channel and can be fixed in position by embedding into any of the notches; the elastic pressing mechanism is disposed between the first end of the second housing and the annular plate. The elastic pressing mechanism includes a spring and a washer. One end of the spring is fixedly connected to the annular plate, and the other end of the spring is connected to the washer. The washer is used to press the first end of the second housing under the pressure of the spring after the protrusion is embedded into the corresponding notch; multiple sets of the elastic pressing mechanisms are disposed in the annular gap, and all the elastic pressing mechanisms are evenly distributed circumferentially on the outer periphery of the inner housing.

2. The light spot adjustment handpiece according to claim 1, characterized in that, The second end of the second housing is a conical structure, and one axial end of the arc-shaped plate is connected to the small end of the conical structure.

3. The light spot adjustment handpiece according to claim 1, characterized in that, The fastener is located near the first end opening of the first housing. The fastener includes a plurality of pin screws spaced apart circumferentially along the first housing. Each pin screw penetrates the side wall of the first housing and is threadedly connected to the side wall of the first housing. A rubber pad is connected to the end of each pin screw located inside the first housing.

4. A laser freckle removal system, characterized in that, The device includes a laser emitting device and a spot adjustment hand as described in any one of claims 1 to 3. The laser emitting device is installed inside the first end of the first housing and is fixed and locked by the fixing member. The laser emitting device is used to emit a laser for removing spots toward the spots to be removed and to form a laser spot of a corresponding size at the spots to be removed.

5. The laser freckle removal system according to claim 4, characterized in that, The laser emitting device includes: A fixed cylinder, the first end of which is fixed to the inside of the first end of the first housing by the fixing member; The adjustment cylinder is provided in multiple ways. The first end of any one of the adjustment cylinders can be threaded to the second end of the fixed cylinder. A convex lens is installed at the second end of any one of the adjustment cylinders. The focal length of the convex lens installed on different adjustment cylinders is different. The outer surface of any one of the convex lenses is covered with a high-transmittance film. The thickness of the high-transmittance film on different convex lenses is different. A laser source is disposed inside the fixed cylinder and is used to emit laser light toward the convex lens.

Images