Laser treatment handle and laser treatment instrument

Abstract

The present application relates to the technical field of electrotherapy. Disclosed in the present application are a laser treatment handle and a laser treatment instrument. The laser treatment handle comprises a shell and an optical assembly, wherein the shell is provided with a cavity that extends in an axial direction of the shell for propagation of laser, and an incident end and an emergent end which are located at two ends of the cavity; the optical assembly comprises a collimator, a beam splitter, a multifocal diffractive element and a focusing lens, which are provided in the cavity and sequentially arranged in the axial direction of the shell; and laser enters from the incident end, is converted into a collimated beam by means of the collimator, is then dispersed into a plurality of microbeams by means of the beam splitter, then passes through the multifocal diffractive element and the focusing lens, is emitted from the emergent end, and is finally subjected to multifocal focusing in a three-dimensional space at a specific position at a distance from the emergent end.

Description

Laser therapy handpieces and laser therapy devices

[0001] This application claims priority to Chinese patent application No. 202310754922.0 filed on June 26, 2023, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of electrotherapy, and in particular to a laser therapy handle and a laser therapy device. Background Art

[0003] With the rapid development of laser technology, it is increasingly being applied in the field of medical aesthetics, and the therapeutic effects of lasers on the skin have become a focus of much attention in the medical aesthetics community. Fractional laser therapy primarily involves splitting a single beam of light into multiple beams through a beam splitter. These beams are then focused on the treatment area. The higher energy levels ablate melanin and air bubbles within the skin, while stimulating collagen production, achieving the goals of whitening and removing freckles.

[0004] However, the focal points of the multiple beams of light dispersed by the current laser treatment handle after passing through the beam splitter are all on the same two-dimensional plane. This can only treat tissue in a two-dimensional plane area on the skin, and cannot treat tissue at different depths within the skin, limiting the application of laser treatment. Technical issues

[0005] The main purpose of this application is to provide a laser treatment handle, which aims to solve the problem that existing laser treatment handles cannot treat skin tissues of different depths. Technical Solutions

[0006] To achieve the above-mentioned purpose, the laser treatment handle proposed in the present application includes a shell and an optical component; the shell forms a cavity extending along its axial direction for laser propagation, and an incident end and an output end located at both ends of the cavity; the optical component is arranged in the cavity, and the optical component includes a collimator, a beam splitter, a multifocal diffraction element, and a focusing lens arranged in sequence along the axial direction of the shell. The laser enters from the incident end, is converted into a collimated beam by the collimator, and then is dispersed into multiple micro beams by the beam splitter, and then is emitted from the output end through the multifocal diffraction element and the focusing lens, and finally is multi-focused in a three-dimensional space at a specific position away from the output end.

[0007] In one embodiment of the present application, the beam splitter, the multifocal diffraction element, and the focusing lens are arranged at intervals along the axial direction of the cavity.

[0008] In one embodiment of the present application, the multifocal diffraction element and the beam splitter are an integrally formed structure.

[0009] In one embodiment of the present application, the multifocal diffraction element and the focusing lens are an integrally formed structure.

[0010] In one embodiment of the present application, the collimator includes a first lens, a second lens and a limiter, the limiter is installed in the cavity, the first lens and the second lens are arranged at both ends of the limiter, and the first lens is arranged at one end of the limiter close to the incident end.

[0011] In one embodiment of the present application, both the incident surface and the exit surface of the first lens are convex surfaces, and both the incident surface and the exit surface of the second lens are concave surfaces.

[0012] In one embodiment of the present application, the optical component further includes a protective mirror, which is disposed in the cavity on one side close to the emission end and spaced apart from the focusing lens.

[0013] In one embodiment of the present application, a limiting portion is protruded from the inner wall of the cavity, and the focusing lens and the protective mirror are respectively abutted against two sides of the limiting portion.

[0014] In one embodiment of the present application, the incident surface of the focusing lens is a plane, and the exit surface is a convex surface.

[0015] In one embodiment of the present application, the optical component further includes a plurality of gaskets and a fixing ring, and a gasket is provided between any two adjacent ones of the collimator, the beam splitter, the multifocal diffraction element, and the focusing lens, and the fixing ring is threadedly connected to the housing and presses against one side of the gasket in the axial direction.

[0016] In one embodiment of the present application, the gasket is a silicone gasket or a rubber gasket.

[0017] In one embodiment of the present application, the shell includes a front shell, a middle shell and a rear shell connected in sequence along the direction from the incident end to the exit end, the collimator and the beam splitter are both arranged at an end of the front shell close to the middle shell, and the multifocal diffraction element and the focusing lens are both arranged at an end of the middle shell close to the front shell.

[0018] In one embodiment of the present application, the front shell and the middle shell are connected by threads, and the rear shell and the middle shell are plugged together.

[0019] In one embodiment of the present application, the laser treatment handle further includes an electrically connected cable and a monitor, and the monitor and the cable are disposed outside the housing.

[0020] In one embodiment of the present application, a storage chip is provided in the monitor for storing information of the laser treatment handle; one end of the cable is connected to the monitor, and the other end of the cable is connected to the laser control system. The connection signal of the monitor is transmitted to the laser control system through the cable, and the control system controls the laser to emit or turn off the laser.

[0021] The present application also proposes a laser therapy device, which includes any of the laser therapy handles described above.

[0022] In one embodiment of the present application, the laser therapy device also includes a laser, which is a long pulse solid laser, a Q-switched solid laser, a picosecond solid laser or a CO2 laser; the laser is connected to the incident end of the laser therapy handle, and the laser is used to enter the laser therapy handle through the incident end of the laser therapy handle. Beneficial effects

[0023] The shell of the laser treatment handle of the technical solution of the present application is formed with a cavity extending along its axial direction and an incident end and an output end located at both ends of the cavity. The laser enters the cavity from the incident end and is then emitted from the output end. Optical components such as a collimator, a beam splitter, a multi-focal diffraction element, and a focusing lens are arranged in the cavity. After the laser enters the cavity, it first passes through the collimator, which converts the divergent laser beam into a collimated beam. The collimated beam then passes through the beam splitter, which disperses the collimated beam into multiple micro beams to form a two-dimensional beam matrix. After the beam matrix composed of multiple beams passes through the multi-focal diffraction element and the focusing lens in sequence, the multiple beams are diffracted and multi-focal focusing is generated at a specific position away from the output end, so that the laser beam matrix on the two-dimensional level forms a focusing point matrix on the three-dimensional level, which not only realizes tissue treatment in a two-dimensional plane area, but also achieves the purpose of treating tissues at different depths of the skin, thereby improving the therapeutic effect of laser treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0025] FIG1 is a schematic structural diagram of an embodiment of a laser treatment handle of the present application;

[0026] FIG2 is a schematic diagram of an explosion of the laser treatment handle shown in FIG1 ;

[0027] FIG3 is a left side view of the laser treatment handle of FIG1 according to the present application;

[0028] FIG4 is a cross-sectional view along the AA' direction of FIG3;

[0029] FIG5 is a schematic diagram of the focus position of the beam of the laser treatment handle of the present application;

[0030] FIG6 is a schematic diagram of light beam transmission of an optical component in an embodiment of a laser treatment handle of the present application;

[0031] FIG7 is a schematic diagram of light beam transmission of another embodiment of an optical component in a laser treatment handle of the present application;

[0032] FIG8 is a schematic diagram of light beam transmission according to another embodiment of the optical assembly in the laser treatment handle of the present application;

[0033] FIG9 is a schematic diagram of the laser therapy apparatus of the present application including a connected laser and a laser therapy handle.

[0034] Description of Figure Numbers:

[0035] Reference numerals Reference numerals 1 Laser treatment handle 211 First lens 10 Housing 212 Limiting member 11 Front housing 213 Second lens 111 Incident end 22 Beam splitter 12 Middle housing 23 Multifocal diffraction element 121 Limiting portion 24 Focusing lens 13 Rear housing 25 Protective mirror 131 Output end 26 Gasket 132 Abutting member 27 Fixing ring 14a Cavity 30 Electrical connection cable 21 Collimator 40 Monitor 100 Laser therapy device 9 Laser

[0036] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. Modes for Carrying Out the Invention

[0037] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0038] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0039] In this application, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0040] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features specified as "first" and "second" may explicitly or implicitly include at least one of the features. The meanings of "and / or" and "and / or" appearing throughout the text are the same, both indicating that three parallel solutions are included. Taking "A and / or B" as an example, it includes Solution A, or Solution B, or a solution in which both A and B are satisfied. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0041] The present application proposes a laser treatment handle 1 .

[0042] As shown in Figures 1 to 4, in one embodiment of the present application, the laser treatment handle 1 includes a shell 10 and an optical component; the shell 10 is formed with a cavity 14a extending along its axial direction for laser propagation, and an incident end 111 and an output end 131 located at both ends of the cavity 14a; the optical component is arranged in the cavity 14a, and the optical component includes a collimator 21, a beam splitter 22, a multifocal diffraction element 23, and a focusing lens 24 arranged in sequence along the axial direction of the shell 10. The laser enters from the incident end 111, is converted into a collimated beam by the collimator 21, and is then dispersed into multiple micro beams by the beam splitter 22, and is then diffracted and focused by the multifocal diffraction element 23 and the focusing lens 24 to be emitted from the output end 131, and finally is multi-focused in a three-dimensional space at a specific position away from the output end 131.

[0043] In this embodiment, the shell 10 includes a front shell 11, a middle shell 12, and a rear shell 13 connected in sequence, wherein the end of the front shell 11 away from the middle shell 12 is the incident end 111, and the end of the rear shell 13 away from the middle shell 12 is the output end 131. The incident end 111 is connected to the laser emission module, and the output end 131 is in contact with the skin. The laser enters from the incident end 111, passes through the optical components provided in the cavity 14a, and is emitted from the output end 131. The front shell 11 and the middle shell 12, and the rear shell 13 and the middle shell 12 can be connected by threaded connection, plug-in connection, etc. A cavity 14a is formed inside the shell 10 along its axial direction, and the laser propagates in the cavity 14a. The shape of the shell 10 can be cylindrical to facilitate the processing and molding of the shell 10 and the cavity 14a, thereby reducing production costs. The cross-sectional dimensions of the cavity 14 a and the dimensions of the emission end 131 and the incidence end 111 can be designed according to the size of the optical element and the size of the area to be treated, and are not further limited herein.

[0044] The optical components process the incident laser light, which passes sequentially through a collimator 21, a beam splitter 22, a multifocal diffraction element 23, and a focusing lens 24, all located parallel to each other within cavity 14a. Collimator 21 converts the laser light into a collimated beam. It operates by utilizing the principle of refraction under the action of a lens to convert a diverging laser beam into a collimated beam. Collimator 21 adjusts the diverging laser beam into a collimated beam, allowing for a more regular and controllable beam matrix and focal point during the subsequent splitting and diffraction processes, thereby improving the accuracy of laser treatment.

[0045] The beam splitter 22 is a two-dimensional binary optical element based on the principle of a phase diffraction grating. After a laser beam is collimated by the collimator 21, it is split into multiple microbeam arrays by the beam splitter 22. The microbeam array can have a circular or rectangular shape. The beam splitter 22 diffracts the one-dimensional beam into a two-dimensional array, enabling the laser treatment handpiece to achieve laser treatment of tissues on a two-dimensional plane.

[0046] The multifocal diffraction element 23 diffracts the incident laser. After passing through the multifocal diffraction element 23, multiple micro-beams pass through the focusing lens 24, forming multiple focuses with almost equal spacing along the direction of light propagation, and the energy of each focus is basically the same. The multifocal diffraction element 23 diffracts the two-dimensional beam array into a three-dimensional beam array to treat tissues at different depths.

[0047] The focusing lens 24 enables each microbeam to be focused at multiple focal points along its optical axis. Focusing lenses 24 with varying refractive indices and focal lengths can be used to meet the needs of different treatment depths. The laser treatment handle 1 in this application can treat depths of 0.3 to 3 mm. A protective lens 25 can also be added to the output end 131 to protect the optical components within the cavity 14a, preventing dust and debris generated during the treatment process from entering the cavity 14a and contaminating the optical components.

[0048] The laser treatment handle 1 proposed in the present application is provided with a collimator 21, a beam splitter 22, a multifocal diffraction element 23 and a focusing lens 24 in the cavity 14a of the shell 10. Under the action of these optical components, a divergent laser beam is refracted, diffracted and focused to form a plurality of light point arrays with a certain focal depth on a three-dimensional plane, thereby achieving the purpose of laser treatment of skin tissues at different depths and improving the therapeutic effect of laser treatment.

[0049] 4 to 6 , in one embodiment of the present application, the beam splitter 22 , the multifocal diffraction element 23 , and the focusing lens 24 are arranged at intervals along the axial direction of the cavity 14 a .

[0050] In this embodiment, the cross-sectional shape of the beam splitter 22, the multifocal diffraction element 23, and the focusing lens 24 can be circular, the same as the cross-sectional shape of the cavity 14a, for ease of installation. Under the action of the beam splitter 22, the light beam diffracts into multiple light beams, and the multiple light beams are evenly spaced and distributed on the XY plane. The multifocal diffraction element 23 and the focusing lens 24 can simultaneously obtain multiple focal points in the propagation direction, i.e., the Z direction, thereby obtaining a three-dimensional focal light array in the XYZ direction, so as to achieve the purpose of treating tissues at different depths within a certain range of the skin. The incident surface of the focusing lens 24 is a plane, and the exit surface is convex. The beam splitter 22, the multifocal diffraction element 23, and the focusing lens 24 are arranged at intervals along the axial direction of the cavity 14a. Gaskets 26 such as silicone rings or rubber rings can be set between the spaced optical components, or threads can be set on the optical components and the cavity wall of the cavity 14a, and the gaps between these optical components can be adjusted by threaded fit. The range of the light array in the XY direction can be adjusted by using different beam splitters 22, and the range of the light array in the Z direction can be adjusted by using multifocal diffraction elements 23 with different working distances, so as to adapt to the needs of different treatment ranges and treatment depths and improve the practicality and flexibility of the laser treatment handle 1.

[0051] 7-8 , in one embodiment of the present application, the multifocal diffraction element 23 and the beam splitter 22 are an integrally formed structure; or, the multifocal diffraction element 23 and the focusing lens 24 are an integrally formed structure.

[0052] In this embodiment, the multifocal diffraction element 23 and the beam splitter 22 can be designed as an integrally formed structure, that is, the incident portion of the combined lens is the beam splitter 22, and the exit portion is the multifocal diffraction element 23. It is understandable that when each optical component is provided separately, it is necessary to perform processing techniques such as cutting, polishing, and coating on the individual optical components. However, using an integrally formed structure, both optical components can be processed simultaneously, thereby reducing production costs and process complexity. At the same time, during assembly, the integrally formed structure can reduce the assembly process, reduce structural complexity, and improve assembly efficiency. In other embodiments, the multifocal diffraction element 23 and the focusing lens 24 can also be designed as an integrally formed structure.

[0053] As shown in Figures 2 and 4, in one embodiment of the present application, the collimator 21 includes a first lens 211, a second lens 213 and a limiter 212. The limiter 212 is installed in the cavity 14a. The first lens 211 and the second lens 213 are arranged at both ends of the limiter 212. The first lens 211 is arranged at one end of the limiter 212 close to the incident end 111.

[0054] In this embodiment, the cross-sectional shape of the first lens 211, the second lens 213 and the limiter 212 is the same as the cross-sectional shape of the cavity 14a, for example, a circle, to facilitate installation. The limiter 212 is a through structure at both ends, and a cavity for laser propagation is formed inside. The limiter 212 abuts against the inner wall of the cavity 14a. The end faces of both ends of the limiter 212 are concave with a circle of grooves, and the first lens 211 and the second lens 213 are respectively arranged in the grooves at both ends of the limiter 212. By setting the limiter 212 to limit the distance between the first lens 211 and the second lens 213, the accuracy of the collimator 21 in adjusting the light beam is improved. The first lens 211 adopts an aspheric lens, which has a better curvature radius, so that the light beams converge to the same point, improve the optical quality, and thus improve the accuracy of laser treatment.

[0055] 2 and 4 , in one embodiment of the present application, both the incident surface and the exit surface of the first lens 211 are convex surfaces, and both the incident surface and the exit surface of the second lens 213 are concave surfaces.

[0056] In this embodiment, the incident and exit surfaces of the first lens 211 are designed to be convex, while the incident and exit surfaces of the second lens 213 are designed to be concave. This allows the laser beam to undergo multiple refractions as it passes through the first and second lenses 211, 213, thereby adjusting the divergent laser beam into a collimated beam. This allows the laser beam to be subsequently diffracted and focused into a regular three-dimensional light array, thereby improving the accuracy of laser treatment. In other embodiments, the incident surface of the first lens 211 can be designed to be concave, and the exit surface to be flat, while the incident surface of the second lens 213 can be designed to be flat, and the exit surface to be convex. As long as the divergent laser beam can be converted into a collimated beam, no further limitations are imposed.

[0057] 2 and 4 , in one embodiment of the present application, the optical assembly further includes a protective mirror 25 . The protective mirror 25 is disposed in the cavity 14 a on one side close to the emission end 131 and spaced apart from the focusing lens 24 .

[0058] In this embodiment, the protective mirror 25 primarily protects the optical components within the cavity 14a. Dust and other impurities adhering to the surfaces of the collimator 21, beam splitter 22, multifocal diffraction element 23, and focusing lens 24 can affect the effectiveness and safety of laser treatment. Therefore, the protective mirror 25 is positioned within the cavity 14a near the emission end 131 to prevent the ingress of dust and other impurities, thereby improving the accuracy of the laser treatment handle 1.

[0059] As shown in FIG4 , in one embodiment of the present application, a stopper 121 is protruded from the inner wall of the cavity 14 a , and the focusing lens 24 and the protective mirror 25 are respectively in contact with two sides of the stopper 121 ;

[0060] And / or, the incident surface of the focusing lens 24 is a flat surface, and the exit surface is a convex surface.

[0061] In this embodiment, the limiting portion 121 can be arranged in a ring on a platform on the inner wall of the cavity 14a. The cross-sectional shape of the limiting portion 121 can be annular, and the annular limiting portion 121 has a channel for laser propagation along its axial direction. The side of the limiting portion 121 facing the incident end 111 is used to support the focusing lens 24, and the other side facing the output end 131 is used to place the protective mirror 25. The limiting portion 121 supports the focusing lens 24 and the protective mirror 25 to facilitate the installation of the lenses. The protective mirror 25 is separated from other optical components by the limiting portion 121. When dust accumulates on the surface of the protective mirror 25 after long-term use, it is convenient to remove or replace the protective mirror 25 separately, thereby improving the convenience of the laser treatment handle 1.

[0062] In the case where the inner wall of the cavity 14a is provided with a protruding stopper 121, or not, the incident surface of the focusing lens 24 is designed to be flat, and the exit surface is designed to be convex, so that the laser beam can be focused after passing through the focusing lens 24. In other embodiments, the focusing lens 24 can also be a positive meniscus lens, that is, the incident surface is concave and the exit surface is convex, so as to focus the incident light, which is not further limited here.

[0063] Please continue to refer to Figure 4. In one embodiment of the present application, the optical component also includes a plurality of gaskets 26 and a fixing ring 27. A gasket 26 is provided between any two adjacent ones of the collimator 21, the beam splitter 22, the multifocal diffraction element 23, and the focusing lens 24. The fixing ring 27 is threadedly connected to the housing 10 and presses against one side of the gasket 26 in the axial direction.

[0064] In this embodiment, washers 26 and retaining rings 27 are positioned between the optical components to secure and position them. Washers 26 can be made of silicone, rubber, or other materials, exhibiting a certain degree of elasticity and flexibility. They act as a position limiter and cushion for the optical components, preventing scratches during installation. Washers 26 can also be of varying thicknesses, allowing for different spacing requirements between different optical components to achieve a desired position limit. The retaining rings 27 are threaded onto the inner wall of the middle shell 12 at both ends. One side of the retaining rings 27 presses against the washers 26, and rotation compresses the washers 26, thereby securing the optical components within the cavity 14a. The use of retaining rings 27 in conjunction with washers 26 for securing the optical components enhances installation convenience. Furthermore, the removable connection between the optical components allows for the replacement of optical components with different material properties or adjustment of the distance between them to achieve laser beams with varying three-dimensional treatment ranges, enabling the laser treatment handle 1 to accommodate a wider range of treatment scenarios, thereby enhancing its practicality and convenience.

[0065] As shown in Figures 1 to 4, in one embodiment of the present application, the shell 10 includes a front shell 11, a middle shell 12 and a rear shell 13 connected in sequence along the direction from the incident end 111 to the exit end 131, the collimator 21 and the beam splitter 22 are both arranged at an end of the front shell 11 close to the middle shell 12, and the multifocal diffraction element 23 and the focusing lens 24 are both arranged at an end of the middle shell 12 close to the front shell 11.

[0066] The connections between the front shell 11, the middle shell 12 and the rear shell 13 can be connected by threaded connection, plug-in connection, etc. In this embodiment, the front shell 11 and the middle shell 12 are connected by threaded connection to improve the connection stability, and the rear shell 13 and the middle shell 12 are plug-in connection to facilitate disassembly and assembly. At least one sealing ring is provided at the plug-in connection to improve the plug-in strength and the sealing effect in the cavity 14a. A groove is recessed in the cavity wall of the cavity 14a at one end of the front shell 11 close to the middle shell 12, and the collimator 21 is arranged in the groove. The incident surface of the collimator 21 abuts against the groove wall of the groove, and a gasket 26 is provided at the exit surface. The beam splitter 22 is provided at one end of the front shell 11 close to the middle shell 12 and is threadedly connected to the inner wall of the cavity 14a. The beam splitter 22 abuts against the gasket 26 on one side of the collimator 21 and is squeezed by rotating the thread to stably fix the collimator 21 in the cavity 14a. The multifocal diffractive element 23 and focusing lens 24 are disposed within the cavity 14a of the middle housing 12. The exit surface of the focusing lens 24 abuts the stopper 121, and a gasket 26 is disposed between the incident surface of the focusing lens 24 and the exit surface of the multifocal diffractive element 23. A gasket 26 is also disposed on the incident surface of the multifocal diffractive element 23, and a fixing ring 27 is disposed on the other side of the gasket 26. The fixing ring 27 is threadedly connected to the inner wall of the middle housing 12 and, by rotating and squeezing the gasket 26, stably secures the multifocal diffractive element 23 and focusing lens 24 within the middle housing 12.

[0067] The protective lens 25 is positioned on the other side of the stopper 121 relative to the focusing lens 24. A washer 26 and a retaining ring 27 are positioned on the light-emitting surface of the protective lens 25 to secure the protective lens 25. The rear housing 13 is inserted into the cavity of the middle housing 12 and presses against the retaining ring 27, further strengthening the securing of the protective lens 25.

[0068] The end of the rear shell 13 away from the front shell 11, that is, the output end 131, is provided with a buttress 132 on the end face away from the incident end 111. The buttress 132 forms a cavity 14a for laser propagation along its axial direction. The two ends of the cavity 14a are through-connected, one end is connected to the end face of the output end 131, and the other end is in contact with the skin surface. The length of the buttress 132 along its axial direction can be designed according to the distance from the energy focus position of the laser after emission to the end face of the output end 131, so as to match the laser energy focus or working range with the skin depth area to be treated, thereby improving the accuracy of laser treatment.

[0069] The laser treatment handle 1 also includes an electrical connection cable 30 and a monitor 40. The monitor 40 and cable 30 are located outside the housing 10. The monitor 40 includes a memory chip for storing information about the laser treatment handle 1. One end of the cable 30 is connected to the monitor 40, and the other end is connected to the laser control system. The connection signal from the monitor 40 is transmitted to the laser control system through the cable 30, and the control system controls the laser to emit or shut down the laser, thereby starting or stopping laser treatment.

[0070] The present application also proposes a laser therapy device 100 , which includes the laser therapy handle 1 described above.

[0071] The specific structure of the laser treatment handle 1 refers to the above-mentioned embodiment. Since the laser treatment device 100 of the present application adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0072] The laser therapy device 100 also includes a laser 9, which can be a long-pulse solid-state laser, a Q-switched solid-state laser, a picosecond solid-state laser, or a CO2 laser. Laser 9 is connected to the incident end 111 of the laser therapy handle 1 via a light guide, and laser light enters the laser therapy handle 1 through the incident end 111. By arranging the laser therapy handle 1 and the laser 9, the laser therapy device 100 forms a laser dot matrix with multiple focal points on a three-dimensional plane, resolving the problem of existing laser therapy devices being unable to treat skin tissue at different depths and improving the effectiveness of laser therapy.

[0073] FIG9 is a schematic diagram of a laser therapy apparatus 100 provided with a laser therapy handle 1 and a laser 9 in one embodiment of the present application, wherein the laser therapy handle 1 and the laser 9 are connected to each other.

[0074] The above descriptions are merely some embodiments of the present application and are not intended to limit the patent scope of the present application. All equivalent structural transformations made using the contents of the present application specification and drawings under the inventive concept of the present application, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present application.

Claims

1. A laser treatment handle, wherein: The laser treatment handle comprises: A housing, wherein the housing is formed with a cavity extending along its axial direction for laser propagation, and an incident end and an output end located at two ends of the cavity; and An optical component, the optical component is arranged in the cavity, and the optical component includes a collimator, a beam splitter, a multi-focal diffraction element, and a focusing lens arranged in sequence along the axial direction of the housing; The laser enters from the incident end, is converted into a collimated beam by the collimator, is dispersed into multiple micro beams by the beam splitter, is emitted from the exit end through the multi-focal diffraction element and the focusing lens, and is finally focused at multiple focal points in a three-dimensional space at a specific position away from the exit end.

2. The laser treatment handle according to claim 1, wherein: The beam splitter, the multi-focal diffraction element, and the focusing lens are arranged at intervals along the axial direction of the cavity.

3. The laser treatment handle according to claim 1, wherein: The multi-focal diffraction element and the beam splitter are an integrally formed structure.

4. The laser treatment handle according to claim 1, wherein: The multi-focal diffraction element and the focusing lens are an integrally formed structure.

5. The laser treatment handle according to any one of claims 1 to 4, wherein: The collimator comprises a first lens, a second lens and a stopper, wherein the stopper is installed in the cavity, the first lens and the second lens are arranged at two ends of the stopper, and the first lens is arranged at one end of the stopper close to the incident end.

6. The laser treatment handle according to claim 5, wherein: The incident surface and the exit surface of the first lens are both convex surfaces, and the incident surface and the exit surface of the second lens are both concave surfaces.

7. The laser treatment handle according to any one of claims 1 to 4, wherein: The optical component further comprises a protective mirror, which is arranged at one side of the cavity close to the emission end and spaced apart from the focusing lens.

8. The laser treatment handle according to claim 7, wherein: A limiting portion is convexly provided on the inner wall of the cavity, and the focusing lens and the protective mirror are respectively abutted against two sides of the limiting portion.

9. The laser treatment handle according to claim 7, wherein: The incident surface of the focusing lens is a plane, and the exit surface is a convex surface.

10. The laser treatment handle according to any one of claims 1 to 4, wherein: The optical component also includes a plurality of gaskets and fixing rings. A gasket is provided between any two adjacent ones of the collimator, the beam splitter, the multifocal diffraction element, and the focusing lens. The fixing ring is threadedly connected to the housing and presses against one side of the gasket in the axial direction.

11. The laser treatment handle according to any one of claims 10, wherein: The gasket is a silicone gasket or a rubber gasket.

12. The laser treatment handle according to any one of claims 1 to 4, wherein: The shell includes a front shell, a middle shell and a rear shell which are connected in sequence along the direction from the incident end to the exit end. The collimator and the beam splitter are both arranged at one end of the front shell close to the middle shell, and the multifocal diffraction element and the focusing lens are both arranged at one end of the middle shell close to the front shell.

13. The laser treatment handle according to claim 12, wherein: The front shell and the middle shell are connected by threads, and the rear shell and the middle shell are plugged.

14. The laser treatment handle according to claim 1, wherein: The laser treatment handle also includes an electrically connected cable and a monitor, and the monitor and the cable are arranged outside the shell.

15. The laser treatment handpiece of claim 14, wherein: The monitor is provided with a storage chip for storing information of the laser treatment handle; one end of the cable is connected to the monitor, and the other end of the cable is connected to the laser control system. The connection signal of the monitor is transmitted to the laser control system through the cable, and the control system controls the laser to emit or turn off the laser.

16. A laser therapeutic apparatus, wherein: The laser therapy device comprises the laser therapy handle according to any one of claims 1-15.

17. The laser therapeutic apparatus according to claim 16, wherein: The laser therapy device also includes a laser, which is a long pulse solid laser, a Q-switched solid laser, a picosecond solid laser or a CO2 laser; the laser is connected to the incident end of the laser therapy handle, and the laser is used to enter the laser therapy handle through the incident end of the laser therapy handle.

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