CN116492604A - Laser treatment handle and laser treatment instrument - Google Patents
Laser treatment handle and laser treatment instrument Download PDFInfo
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- CN116492604A CN116492604A CN202310754922.0A CN202310754922A CN116492604A CN 116492604 A CN116492604 A CN 116492604A CN 202310754922 A CN202310754922 A CN 202310754922A CN 116492604 A CN116492604 A CN 116492604A
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- 238000013532 laser treatment Methods 0.000 title claims abstract description 61
- 230000003287 optical effect Effects 0.000 claims abstract description 46
- 230000000670 limiting effect Effects 0.000 claims description 29
- 230000001681 protective effect Effects 0.000 claims description 17
- 230000001225 therapeutic effect Effects 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000011282 treatment Methods 0.000 abstract description 17
- 230000000694 effects Effects 0.000 abstract description 8
- 238000001827 electrotherapy Methods 0.000 abstract description 2
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- XUMBMVFBXHLACL-UHFFFAOYSA-N Melanin Chemical compound O=C1C(=O)C(C2=CNC3=C(C(C(=O)C4=C32)=O)C)=C2C4=CNC2=C1C XUMBMVFBXHLACL-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000002537 cosmetic Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
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- 102000008186 Collagen Human genes 0.000 description 1
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- 238000000429 assembly Methods 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/06—Radiation therapy using light
- A61N5/067—Radiation therapy using light using laser light
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/06—Radiation therapy using light
- A61N2005/0632—Constructional aspects of the apparatus
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/06—Radiation therapy using light
- A61N2005/0664—Details
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/06—Radiation therapy using light
- A61N5/0613—Apparatus adapted for a specific treatment
- A61N5/0616—Skin treatment other than tanning
Abstract
The invention relates to the technical field of electrotherapy, and discloses a laser treatment handle and a laser treatment instrument, wherein the laser treatment handle comprises a shell and an optical component; the shell is provided with a cavity which extends along the axial direction and is used for laser propagation, and an incident end and an emergent end which are positioned at two ends of the cavity; the optical component comprises a collimator, a beam splitter, a multi-focus diffraction element and a focusing lens which are arranged in the cavity and are sequentially arranged along the axial direction of the shell, laser enters from the incident end, is converted into a collimated beam through the collimator, is dispersed into a plurality of micro beams through the beam splitter, is emitted from the emergent end after passing through the multi-focus diffraction element and the focusing lens, and is focused in a three-dimensional space at a specific position away from the emergent end. The laser treatment handle solves the problem that the existing laser handle can not treat tissues with different depths, and improves the treatment effect of laser treatment.
Description
Technical Field
The invention relates to the technical field of electrotherapy, in particular to a laser treatment handle and a laser treatment instrument.
Background
With the rapid development of laser technology, more and more laser technology is applied in the medical and cosmetic field, and the treatment effect of laser on skin is also becoming a focus of many medical and cosmetic fields. The lattice laser treatment mainly comprises the steps of dispersing a beam of light into a plurality of beams of light through a beam splitter, and after the plurality of beams of light are focused on a treatment area, ablating melanin and bubbles in skin with higher energy and stimulating the generation of collagen, so that the treatment aims of whitening, removing freckles and the like are achieved.
However, the focusing points of multiple scattered lights of the existing laser treatment handle after passing through the beam splitter are on the same two-dimensional plane, so that only the tissue treatment of a two-dimensional plane area on the skin can be performed, the tissue treatment of different depths in the skin can not be performed, and the application of the laser treatment is limited.
Disclosure of Invention
The invention mainly aims to provide a laser treatment handle, which aims to solve the problem that the existing laser treatment handle cannot treat skin tissues with different depths.
In order to achieve the above object, the present invention provides a laser treatment handle comprising a housing and an optical assembly; the shell is provided with a cavity which extends along the axial direction and is used for laser propagation, and an incident end and an emergent end which are positioned at two ends of the cavity; the optical component is arranged in the cavity and comprises a collimator, a beam splitter, a multi-focus diffraction element and a focusing lens which are sequentially arranged along the axial direction of the shell, laser enters from the incident end, is converted into a collimated beam through the collimator, is dispersed into a plurality of micro beams through the beam splitter, is emitted from the emergent end through the multi-focus diffraction element and the focusing lens, and is focused in a three-dimensional space at a specific position away from the emergent end.
In an embodiment of the present invention, the beam splitter, the multifocal diffractive element, and the focusing lens are arranged at intervals along an axial direction of the cavity.
In an embodiment of the present invention, the multifocal diffractive element is integrally formed with the beam splitter;
or, the multi-focus diffraction element and the focusing lens are in an integrated structure.
In an embodiment of the invention, the collimator includes a first lens, a second lens and a limiting member, the limiting member is installed in the cavity, the first lens and the second lens are disposed at two ends of the limiting member, and the first lens is disposed at one end of the limiting member near the incident end.
In an embodiment of the invention, the incident surface and the emergent surface of the first lens are both convex, and the incident surface and the emergent surface of the second lens are both concave.
In an embodiment of the invention, the optical assembly further includes a protective lens, and the protective lens is disposed in the cavity at a side close to the exit end and spaced from the focusing lens.
In an embodiment of the invention, a limiting portion is convexly arranged on the inner wall of the cavity, and the focusing lens and the protective glasses are respectively abutted to two sides of the limiting portion;
and/or the incidence surface of the focusing lens is a plane, and the emergent surface is a convex surface.
In an embodiment of the present invention, the optical assembly further includes a plurality of washers, and a fixing ring, wherein one washer is disposed between any adjacent two of the collimator, the beam splitter, the multifocal diffractive element, and the focusing lens, and the fixing ring is screwed with the housing and abuts against one side of the washer in an axial direction.
In an embodiment of the present invention, the housing includes a front housing, a middle housing, and a rear housing sequentially connected in a direction from an incident end to an exit end, the collimator and the beam splitter are both disposed at an end of the front housing near the middle housing, and the multifocal diffraction element and the focusing lens are both disposed at an end of the middle housing near the front housing.
The invention also provides a laser therapeutic apparatus, which comprises any one of the laser therapeutic handles.
The shell of the laser treatment handle of the technical scheme of the invention is provided with a cavity extending along the axial direction of the shell, an incident end and an emergent end which are positioned at two ends of the cavity, and laser enters the cavity from the incident end and then is emitted from the emergent end. Optical components such as collimators, beam splitters, multifocal diffractive elements, focusing lenses, and the like are disposed within the cavity. The laser enters the cavity and then passes through a collimator, and the collimator converts the divergent laser beam into a collimated beam. The collimated light beam passes through the beam splitter, the beam splitter disperses the collimated light beam into a plurality of micro light beams to form a two-dimensional light beam matrix, the light beam matrix formed by the plurality of light beams sequentially passes through the multi-focus diffraction element and the focusing lens, and the plurality of light beams diffract and generate multi-focus focusing at a specific position away from the emergent end, so that the laser light beam matrix of the two-dimensional layer forms a focusing lattice on the three-dimensional layer, thereby not only realizing tissue treatment of a two-dimensional plane area, but also achieving the aim of treating tissues with different depths of skin and improving the treatment effect of laser treatment.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of an embodiment of a laser treatment handle according to the present invention;
FIG. 2 is an exploded view of the laser treatment handle of FIG. 1;
FIG. 3 is a left side view of the laser treatment handle of the present invention of FIG. 1;
FIG. 4 is a cross-sectional view taken along line A-A' of FIG. 3;
FIG. 5 is a schematic view of the focal position of the laser treatment handle according to the present invention;
FIG. 6 is a schematic view of the beam transmission of one embodiment of an optical assembly in a laser treatment handpiece of the present invention;
FIG. 7 is a schematic view of the beam transmission of another embodiment of the optical assembly of the laser treatment handpiece of the present invention;
fig. 8 is a schematic view of the beam delivery of another embodiment of the optical assembly of the laser treatment handpiece of the present invention.
Reference numerals illustrate:
the achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
In the present invention, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. The meaning of "and/or", "and/or" as used throughout is intended to include three side-by-side schemes, for example "a and/or B", including a scheme, or B scheme, or a scheme where a and B meet at the same time. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
The invention provides a laser treatment handle 1.
Referring to fig. 1-4, in one embodiment of the present invention, a laser treatment handle 1 includes a housing 10 and an optical assembly; the housing 10 is formed with a cavity 14a for laser propagation extending in an axial direction thereof, and an incident end 111 and an exit end 131 at both ends of the cavity 14 a; the optical component is disposed 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 sequentially arranged along the axial direction of the housing 10, the laser enters from the incident end 111, is converted into a collimated beam by the collimator 21, is dispersed into a plurality of micro beams by the beam splitter 22, is diffracted and focused by the multifocal diffraction element 23 and the focusing lens 24, and is emitted from the emergent end 131, and finally is multifocal focused in a three-dimensional space at a specific position away from the emergent end 131.
In this embodiment, the housing 10 includes a front shell 11, a middle shell 12, and a rear shell 13 sequentially connected, wherein an end of the front shell 11 away from the middle shell 12 is an incident end 111, and an end of the rear shell 13 away from the middle shell 12 is an exit end 131. The incident end 111 is connected to the laser emitting module, the emitting end 131 is in contact with the skin, and the laser enters from the incident end 111, passes through the optical assembly provided in the cavity 14a, and then is emitted from the emitting 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 adopting a threaded connection, a plug connection and the like. The cavity 14a is formed in the housing 10 along the axial direction thereof, laser propagates in the cavity 14a, and the housing 10 may be cylindrical in shape, so that the housing 10 and the cavity 14a are formed in a machining manner, and the production cost is reduced. The cross-sectional dimensions of the cavity 14a and the dimensions of the exit end 131 and entrance end 111 may 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.
The optical module is used for processing the incident laser light, and the incident laser light sequentially passes through a collimator 21, a beam splitter 22, a multifocal diffraction element 23, and a focusing lens 24 which are disposed in the cavity 14a and are parallel to each other. The collimator 21 is used to convert the laser light into a collimated beam, and its working principle is to convert the divergent laser beam into a collimated beam by using the principle of refraction under the action of a lens. The collimator 21 realizes the function of adjusting the divergent laser beam into a collimated laser beam, so that the obtained beam matrix and focusing point are more regular and controllable in the subsequent beam splitting and diffracting processes of the laser beam, and the accuracy of laser treatment is improved.
The beam splitter 22 is a two-dimensional binary optical element based on the principle of a phase diffraction grating, and one laser beam is split into a plurality of micro-beam arrays under the action of the beam splitter 22 after being adjusted to be a collimated beam by the collimator 21. The shape distribution of the array of micro-beams may be circular or rectangular. The beam splitter 22 diffracts the one-dimensional beam into a two-dimensional array of beams, enabling the laser treatment handpiece to effect laser treatment of tissue in a two-dimensional plane.
The multi-focus diffraction element 23 diffracts the incident laser, and after passing through the multi-focus diffraction element 23, the multiple micro-beams respectively pass through the focusing lens 24 to form multiple focuses with approximately equal distance along the light path propagation direction, and the energy of each focus is basically consistent, and the multi-focus diffraction element 23 diffracts the two-dimensional beam array into a three-dimensional beam array to treat tissues with different depths.
The focusing lens 24 may cause each micro-beam to be multi-focal on its optical axis. Focusing lenses 24 of different refractive index, focal length may be used to meet the needs of treating different treatment depths. The treatable depth of the laser treatment handle 1 is 0.3-3 mm. Meanwhile, a protective lens 25 can be additionally arranged at the emergent end 131 to protect the optical components in the cavity 14a and prevent dust and fragments generated in the treatment process from entering the cavity 14a to pollute the optical components.
According to the laser treatment handle 1 provided by the invention, the collimator 21, the beam splitter 22, the multifocal diffraction element 23 and the focusing lens 24 are arranged in the cavity 14a of the shell 10, and under the action of the optical components, a beam of divergent laser beams is refracted, diffracted and focused to form a plurality of light lattices with a certain focal depth on a three-dimensional layer, so that the purpose of laser treatment of skin tissues with different depths is realized, and the treatment effect of laser treatment is improved.
As shown in fig. 4-6, in one embodiment of the present invention, the beam splitter 22, the multifocal diffractive element 23, and the focusing lens 24 are spaced apart along the axial direction of the cavity 14 a.
In the present embodiment, the cross-sectional shapes of the beam splitter 22, the multifocal diffraction element 23, and the focusing lens 24 may be circular, the same as the cross-sectional shape of the cavity 14a, for ease of installation. The beam diffracts a plurality of beams under the action of the beam splitter 22, the plurality of beams being uniformly spaced apart in the XY plane. The multifocal diffraction element 23 and the focusing lens 24 can obtain a plurality of focuses simultaneously in the propagation direction, namely the Z direction, so that a three-dimensional Jiao Dianguang array in the XYZ direction is obtained, and the aim of treating tissues with different depths within a certain range of skin is fulfilled. The incident surface of the focusing lens 24 is a plane, the emergent surface is a convex shape, the beam splitter 22, the multi-focus diffraction element 23 and the focusing lens 24 are arranged at intervals along the axial direction of the cavity 14a, and gaskets 26 such as silica gel rings and rubber rings can be arranged between the optical components arranged at intervals, or the optical components and the cavity wall of the cavity 14a are provided with threads, and gaps between the optical components are adjusted through threaded fit. The range in the XY direction of the optical array can be adjusted by using different beam splitters 22, and the range in the Z direction of the optical array can be adjusted by using multi-focus diffraction elements 23 with different working distances, so that the requirements of different treatment ranges and treatment depths can be adapted, and the practicability and the flexibility of the laser treatment handle 1 are improved.
Referring to fig. 7-8, in one embodiment of the present invention, the multifocal diffractive element 23 is integrally formed with the beam splitter 22; alternatively, the multifocal diffractive element 23 is integrally formed with the focusing lens 24.
In this embodiment, the multifocal diffraction element 23 and the beam splitter 22 may be designed as an integrally formed structure, that is, the incidence portion of the combined lens is the beam splitter 22, and the exit portion is the multifocal diffraction element 23. It will be appreciated that when each optical assembly is separately provided, a single optical assembly needs to be cut, polished, coated, etc. and an integrally formed structure is used to process both optical assemblies simultaneously, thereby reducing production cost and process complexity. Meanwhile, when in assembly, the integrally formed structure can reduce the assembly flow, reduce the structural complexity and improve the assembly efficiency. In other embodiments, the multifocal diffractive element 23 and the focusing lens 24 may be designed as an integrally formed structure.
Referring to fig. 2 and 4, in an embodiment of the invention, the collimator 21 includes a first lens 211, a second lens 213 and a limiting member 212, the limiting member 212 is installed in the cavity 14a, the first lens 211 and the second lens 213 are disposed at two ends of the limiting member 212, and the first lens 211 is disposed at an end of the limiting member 212 near the incident end 111.
In the present embodiment, the cross-sectional shapes of the first lens 211, the second lens 213, and the stopper 212 are the same as the cross-sectional shape of the cavity 14a, for example, circular, to facilitate installation. The limiting member 212 has a through structure at two ends, a cavity for laser propagation is formed inside, and the limiting member 212 abuts against the inner wall of the cavity 14 a. The end surfaces of the two ends of the limiting piece 212 are concavely provided with a circle of grooves, and the first lens 211 and the second lens 213 are respectively arranged in the grooves of the two ends of the limiting piece 212. By providing the stopper 212 to limit the distance between the first lens 211 and the second lens 213, the accuracy of the collimator 21 for adjusting the light beam is improved. The first lens 211 adopts an aspheric lens, and the lens has a better curvature radius, so that light beams are converged to the same point, the optical quality is improved, and the accuracy of laser treatment is improved.
With continued reference to fig. 2 and 4, in an embodiment of the present invention, the incident surface and the emergent surface of the first lens 211 are both convex, and the incident surface and the emergent surface of the second lens 213 are both concave.
In this embodiment, the incident surface and the emergent surface of the first lens 211 are designed to be convex, and the incident surface and the emergent surface of the second lens 213 are designed to be concave, so that when laser passes through the first lens 211 and the second lens 213, multiple refraction occurs, and the divergent laser beam is adjusted to be a collimated beam, so that a regular three-dimensional light array is obtained after the laser is diffracted and focused, and the accuracy of laser treatment is improved. In other embodiments, the incident surface of the first lens 211 may be designed as a concave surface, the emergent surface of the second lens 213 is designed as a plane, and the incident surface of the second lens is designed as a convex surface. So long as the divergent laser beam can be converted into a collimated beam, no further limitation is made herein.
With continued reference to fig. 2 and 4, in an embodiment of the present invention, the optical assembly further includes a protective glass 25, and the protective glass 25 is disposed on a side of the cavity 14a near the exit end 131 and spaced apart from the focusing lens 24.
In the present embodiment, the protection glasses 25 mainly play a role in protecting the optical components in the cavity 14a, and when impurities such as dust adhere to the surfaces of the collimator 21, the beam splitter 22, the multifocal diffraction element 23, and the focusing lens 24, the effect and safety of laser treatment are affected. Therefore, the protective glasses 25 are arranged on one side of the cavity 14a close to the emergent end 131, so that foreign matters such as external dust are prevented from entering, and the accuracy of the laser treatment handle 1 is improved.
Referring to fig. 4, in an embodiment of the present invention, a limiting portion 121 is protruding from an inner wall of the cavity 14a, and the focusing lens 24 and the protective glasses 25 are respectively abutted to two sides of the limiting portion 121;
and/or the incident surface of the focusing lens 24 is a plane, and the emergent surface is a convex surface.
In this embodiment, the limiting portion 121 may be disposed around a platform on the inner wall of the cavity 14a, the cross-sectional shape of the limiting portion 121 may be annular, and the annular limiting portion 121 has a channel along its axial direction for laser propagation. One side of the limiting part 121 facing the incident end 111 is used for supporting and placing the focusing lens 24, and the other side facing the emergent end 131 is used for placing the protective glasses 25. The stopper 121 supports the focusing lens 24 and the protective glasses 25 to facilitate the installation of the lenses. The protective glasses 25 are separated from other optical components through the limiting parts 121, and when more dust is accumulated on the rear surface of the protective glasses 25 after long-time use, the protective glasses 25 are detached or replaced independently, so that the convenience of the laser treatment handle 1 is improved.
In the case where the limit portion 121 is provided protruding from the inner wall of the limiting or non-limiting cavity 14a, the incident surface of the focusing lens 24 is designed to be a plane, and the exit surface is designed to be a convex surface, so that the laser beam can be focused after passing through the focusing lens 24. In other embodiments, the focusing lens 24 may be a positive meniscus lens, i.e. the incident surface is concave and the exit surface is convex, so as to focus the incident light, which is not limited herein.
With continued reference to fig. 4, in an embodiment of the present invention, the optical assembly further includes a plurality of washers 26 and a fixing ring 27, wherein a washer 26 is disposed between any two adjacent of the collimator 21, the beam splitter 22, the multifocal diffractive element 23, and the focusing lens 24, and the fixing ring 27 is screwed with the housing 10 and abuts against one side of the washer 26 in the axial direction.
In this embodiment, a gasket 26 and a fixing ring 27 are provided between the optical components, which serve as fixing and limiting functions. The gasket 26 may be made of silica gel, rubber, etc., and has certain elasticity and flexibility, and has the functions of limiting and buffering the optical assembly, and preventing the optical assembly from being scratched during installation. Meanwhile, the thickness of the gasket 26 can be various, and the gasket 26 with different thickness can be arranged according to different requirements of the distance between different optical components so as to achieve the limiting effect. Both ends of the fixing ring 27 are screw-coupled to the inner wall of the middle case 12, and one side of the fixing ring 27 is pressed against the gasket 26, and the gasket 26 is pressed by rotation, thereby stably fixing each optical assembly inside the cavity 14 a. The method for fixing the optical components by using the fixing ring 27 and the gasket 26 improves the installation convenience, and meanwhile, each optical component is detachably connected, so that the optical components with different material characteristics can be matched and replaced or the distance between the optical components can be adjusted according to the requirements of different treatment ranges and treatment depths, laser in different treatment ranges in the three-dimensional direction can be obtained, the laser treatment handle 1 can be matched with more treatment scenes, and the practicability and convenience of the laser treatment handle 1 are improved.
As shown in fig. 1 to 4, in an embodiment of the present invention, the housing 10 includes a front housing 11, a middle housing 12 and a rear housing 13 sequentially connected in a direction from the incident end 111 to the exit end 131, and the collimator 21 and the beam splitter 22 are disposed at one end of the front housing 11 near the middle housing 12, and the multifocal diffraction element 23 and the focusing lens 24 are disposed at one end of the middle housing 12 near the front housing 11.
Alternatively, the connection points of the front shell 11, the middle shell 12 and the rear shell 13 may be connected by a threaded connection, a plugging connection, or the like. In this embodiment, the front shell 11 and the middle shell 12 are connected by screw threads, so as to improve connection stability, and the rear shell 13 and the middle shell 12 are connected by plugging, so that disassembly and assembly are convenient. At least one sealing ring is arranged at the plugging position to improve the plugging strength and the sealing effect in the cavity 14 a. The cavity wall of the cavity 14a at one end of the front shell 11, which is close to the middle shell 12, is concavely provided with a clamping groove, the collimator 21 is arranged in the clamping groove, the incident surface of the collimator 21 is abutted with the groove wall of the clamping groove, and the emergent surface is provided with a gasket 26. The beam splitter 22 is disposed at one end of the front case 11 near the middle case 12 and is in threaded connection with the inner wall of the cavity 14a, the beam splitter 22 abuts against a washer 26 on one side surface of the collimator 21, and the washer 26 is pressed by the rotation of the threads, so that the collimator 21 is stably fixed in the cavity 14 a. The multifocal diffractive element 23 and the focusing lens 24 are disposed within the cavity 14a at the intermediate housing 12. The exit surface of the focusing lens 24 is in contact with the stopper 121, and a gasket 26 is provided between the entrance surface of the focusing lens 24 and the exit surface of the multifocal diffraction element 23. A washer 26 is also provided at the incident surface of the multifocal diffraction element 23, and a fixing ring 27 is provided at the other side of the washer 26, the fixing ring 27 being screw-coupled with the inner wall of the middle housing 12, and the washer 26 being pressed by rotation so that the multifocal diffraction element 23 and the focusing lens 24 are stably fixed in the middle housing 12.
The shielding glasses 25 are disposed at the other side of the limiting portion 121 with respect to the focusing lens 24, and a washer 26 and a fixing ring 27 are sequentially disposed at an exit surface of the shielding glasses 25 to fix the shielding glasses 25. The rear shell 13 is inserted into the cavity of the middle shell 12 in a plugging manner and is pressed against the fixing ring 27 for fixing the protective glasses 25, so that the fixing strength of the protective glasses 25 is further increased.
The end of the rear shell 13 far away from the front shell 11, that is, the end face of the emergent end 131 far away from the incident end 111 is convexly provided with an abutting part 132, a cavity 14a for laser propagation is formed on the abutting part 132 along the axial direction of the abutting part, two ends of the cavity 14a are communicated, one end of the cavity is connected with the end face of the emergent end 131, the other end of the cavity is contacted with the skin surface, and the axial length of the abutting part 132 along the axial direction of the abutting part can be designed according to the distance from the energy focus position of the emergent laser to the end face of the emergent end 131, so that the energy focus or working range of the laser can be matched with the skin depth area to be treated, and the accuracy of laser treatment is improved.
In addition, the laser treatment handle 1 further comprises an electrical connection cable 30 and a monitor 40, wherein the monitor 40 and the cable 30 are arranged outside the housing 10. The monitor 40 is internally provided with a memory chip for storing information of the laser treatment handle 1, one end of the cable 30 is connected with the monitor 40, the other end of the cable is connected with the laser control system, a connection signal of the monitor 40 is transmitted to the laser control system through the cable 30, and the control system controls the laser to emit or close the laser so as to achieve the purpose of starting or stopping laser treatment.
The invention also proposes a laser therapeutic apparatus (not shown) comprising a laser therapeutic handle 1 according to any of the above.
The specific structure of the laser treatment handle 1 refers to the above embodiments, and since the laser treatment apparatus of the present invention adopts all the technical solutions of all the embodiments, at least has all the beneficial effects brought by the technical solutions of the embodiments, and will not be described in detail herein.
Wherein the laser therapeutic apparatus further comprises a laser (not shown), which can be a long pulse solid state laser, a Q-switched solid state laser, a picosecond solid state laser, and CO 2 And the laser is connected with the incidence end 111 of the laser treatment handle 1 through a light guide device, and laser enters the laser treatment handle 1 through the incidence end 111. The laser therapeutic instrument forms laser lattices with a plurality of focuses on a three-dimensional layer by arranging the laser therapeutic handle 1 and the laser, solves the problem that the existing laser therapeutic instrument cannot treat skin tissues with different depths, and improves the effect of laser therapy.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the invention, but rather, the equivalent structural changes made by the description of the present invention and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the invention.
Claims (10)
1. A laser treatment handpiece, the laser treatment handpiece comprising:
the laser light source comprises a shell, a light source and a light source, wherein the shell is provided with a cavity which extends along the axial direction of the shell and is used for laser light transmission, and an incident end and an emergent end which are positioned at two ends of the cavity; and
the optical component is arranged in the cavity and comprises a collimator, a beam splitter, a multifocal diffraction element and a focusing lens which are sequentially arranged along the axial direction of the shell;
the laser enters from the incident end, is converted into a collimated beam by the collimator, is dispersed into a plurality of micro beams by the beam splitter, is emitted from the emergent end by the multifocal diffraction element and the focusing lens, and is focused in a multifocal way in a three-dimensional space at a specific position away from the emergent end.
2. The laser treatment handle of claim 1, wherein the beam splitter, the multifocal diffractive element, and the focusing lens are spaced apart along an axial direction of the cavity.
3. The laser treatment handle of claim 1, wherein the multifocal diffractive element is an integral structure with the beam splitter;
or, the multi-focus diffraction element and the focusing lens are in an integrated structure.
4. A laser treatment handle as claimed in any one of claims 1 to 3 wherein the collimator comprises a first lens, a second lens and a stop, the stop being mounted in the cavity, the first lens and the second lens being disposed at opposite ends of the stop, the first lens being disposed at an end of the stop adjacent the incident end.
5. The laser treatment handle as claimed in claim 4, wherein the first lens has a convex entrance surface and a convex exit surface, and the second lens has a concave entrance surface and a concave exit surface.
6. The laser treatment handle as claimed in any one of claims 1-3 wherein the optical assembly further comprises a protective lens disposed within the cavity on a side thereof adjacent the exit end and spaced from the focusing lens.
7. The laser treatment handle according to claim 6, wherein a limiting part is convexly arranged on the inner wall of the cavity, and the focusing lens and the protective lens are respectively abutted to two sides of the limiting part;
and/or the incidence surface of the focusing lens is a plane, and the emergent surface is a convex surface.
8. The laser treatment handle as claimed in any one of claims 1-3 wherein the optical assembly further comprises a plurality of washers and a retaining ring, one of the washers being disposed between any adjacent two of the collimator, the beam splitter, the multifocal diffractive element, and the focusing lens, the retaining ring being threadably coupled to the housing and bearing against one side of the washer in an axial direction.
9. A laser treatment handle as claimed in any one of claims 1 to 3 wherein the housing comprises a front housing, a middle housing and a rear housing connected in sequence in a direction from an incident end to an exit end, the collimator and the beam splitter being both provided at an end of the front housing adjacent the middle housing, and the multifocal diffractive element and the focussing lens being both provided at an end of the middle housing adjacent the front housing.
10. A laser therapeutic apparatus comprising a laser therapeutic handle as claimed in any one of claims 1 to 9.
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| CN202310754922.0A CN116492604B (en) | 2023-06-26 | 2023-06-26 | Laser treatment handle and laser treatment instrument |
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| CN202310754922.0A CN116492604B (en) | 2023-06-26 | 2023-06-26 | Laser treatment handle and laser treatment instrument |
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| CN116492604B (en) | 2023-11-17 |
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