Erbium laser dental treatment device

Abstract

The utility model provides an erbium laser dental treatment device, relates to dental treatment instrument technical field, including instrument main part and light path subassembly, light path subassembly is provided in instrument main part and includes erbium laser emitter, collimating lens, coupling lens, reflector and columnar light needle, erbium laser emitter and collimating lens are spaced apart along the first light path, coupling lens, reflector and columnar light needle are spaced apart along the second light path. The coupling lens is located on an emergent light path of the collimating lens, the incident light surface is a convex spherical surface, the emergent light surface is a conical surface, the reflector is arranged on the emergent light side of the coupling lens and reflects the laser beam to a second light path, the columnar light needle is detachably installed on the device body, and the incident light end surface is aligned with the second light path. According to the design, a hollow light beam is formed through the columnar light needle and the special coupling lens and is totally reflected and shrunk in the light needle, and different light spot energy distributions are formed at different light beam transmission distances. Compared with a traditional conical light needle, the manufacturing process is simplified, the production cost is reduced, the length of the light needle is reasonably selected, three kinds of light spot distribution can be achieved, various treatment requirements are met, and the treatment effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to dental treatment instrument technical field especially relates to a erbium laser dental treatment device. BACKGROUND

[0002] Erbium laser dental medical technology has been applied to people's dental surgery, when laser surgery is carried out on dental tissue, erbium laser energy is conducted to the operation site by adopting the method of light needle conduction erbium laser. For laser cutting gasification and other treatment methods of dental hard tissue and periodontal soft tissue, the light needle end needs to reach a certain light power density, and the small spot size can realize more accurate laser dental surgery and shorten the operation time. The dental medical treatment uses a conical light needle structure, the light needle is a cylindrical section plus a conical section light needle structure, wherein the cylindrical section is used to couple erbium laser in, and can produce fixation, the conical section is used to connect the erbium laser energy of the cylindrical section, and conduct in the conical section by total reflection, and gradually reduce the conduction area, finally reach the end of the light needle conical light outlet, the area of the light needle end is small, which is beneficial to the increase of the laser power density in the light outlet surface of the light needle end. It is beneficial to shorten the operation time and carry out precise cutting or gasification of dental or periodontal tissue.

[0003] The material of erbium laser light needle is usually sapphire, YAG and other materials, which has high hardness, and the processing method is to grind the taper from part of the cylindrical light rod, usually the smaller the area of the end light needle, the more difficult the grinding and polishing of the surface, which increases the technical difficulty and the production cost.

[0004] Because the light needle needs to contact the human skin and tissue during the operation, it usually needs to be replaced after one-time use, which further increases the operation cost of the patient. Although steam sterilization is sometimes used to realize multiple uses to reduce the operation cost, the structure characteristics of the light needle make it easy to break, and when the broken needle phenomenon occurs during the operation, the light needle debris is difficult to clean, which increases the complexity of the operation and the inconvenience of the patient.

[0005] APPLICATION CONTENT

[0006] Therefore, the utility model provides an erbium laser dental treatment device to solve the problems of high processing difficulty, high cost and easy breaking of erbium laser light needle in the existing erbium laser dental treatment device.

[0007] The technical scheme of the present application is as follows:

[0008] The utility model provides a kind of erbium laser dental treatment device, comprising:

[0009] Equipment main body;

[0010] The optical path assembly is arranged in the equipment main body and comprises an erbium laser emitter, a collimating lens, a coupling lens, a reflecting mirror and a columnar light needle.

[0011] The erbium laser emitter and the collimating lens are arranged in the equipment main body along a first optical path;

[0012] The coupling lens is arranged on an outgoing light path of the collimating lens, and an incoming light surface of the coupling lens is a convex spherical surface, and an outgoing light surface of the coupling lens is a conical surface;

[0013] The reflecting mirror is arranged on an outgoing light side of the coupling lens and is inclined at an angle of 45° with respect to the first optical path, and is used for reflecting a laser beam passing through the coupling lens to a second optical path perpendicular to the first optical path;

[0014] The columnar light needle is detachably mounted on the equipment main body, and an incoming light end surface of the columnar light needle is aligned with the second optical path.

[0015] On the basis of the above technical scheme, preferably, a spherical surface curvature radius of the incoming light surface of the coupling lens is 8 mm to 50 mm, and a conical included angle of the outgoing light surface of the coupling lens is 174° to 179°.

[0016] On the basis of the above technical scheme, preferably, the equipment main body comprises a handle portion and an outgoing light portion connected to an end portion of the handle portion, a first accommodating cavity is arranged in the handle portion, the erbium laser emitter and the collimating lens are fixed in the first accommodating cavity along the first optical path, a second accommodating cavity is arranged in the outgoing light portion, the coupling lens and the reflecting mirror are fixed in the second accommodating cavity, and the columnar light needle is detachably mounted at a distal end of the outgoing light portion.

[0017] On the basis of the above technical scheme, preferably, an installation cavity is arranged at an end of the outgoing light portion away from the handle portion, a positioning sleeve is fixedly arranged in the installation cavity, an installation channel is arranged at a center axis of the positioning sleeve and is in communication with the second accommodating cavity, the installation channel is coaxial with the second optical path, an installation sleeve is fixedly arranged at an outside of an incoming light end of the columnar light needle, and the installation sleeve is inserted into the installation channel and is clamped with the installation channel.

[0018] On the basis of the above technical scheme, preferably, the installation channel comprises a limiting channel and a connecting channel which are in communication with each other, and the limiting channel is adjacent to the second accommodating cavity.

[0019] The mounting sleeve comprises a cylindrical portion and an elastic buckle structure integrally formed with the cylindrical portion, the elastic buckle structure comprises a thin-walled section and a clamping section, the thin-walled section connects the cylindrical portion and the clamping section, and the diameter of the thin-walled section is smaller than the diameter of the cylindrical portion; the outer diameter of the cylindrical portion matches the inner diameter of the connecting channel, the outer diameter of the thin-walled section clearance fits the inner diameter of the limiting channel, the outer diameter of the clamping section is larger than the inner diameter of the limiting channel, and the elastic buckle structure is circumferentially and uniformly provided with a plurality of through grooves to form a radially contractible elastic sheet.

[0020] The elastic buckle structure passes through the limiting channel, and the clamping section is clamped with the outlet end surface of the limiting channel, and the end surface of the cylindrical portion abuts against the end surface of the connecting channel.

[0021] On the basis of the above technical scheme, preferably, the outer peripheral side of the end of the clamping section away from the thin-walled section is provided with a first guide conical surface, and the inner wall of the outlet end of the limiting channel is provided with a second guide conical surface.

[0022] On the basis of the above technical scheme, preferably, at least one sealing member is fixedly arranged on the outer side of the cylindrical portion along the axial direction of the cylindrical portion, the cylindrical portion is sealingly connected with the inner wall of the connecting channel through the sealing member, the length of the cylindrical portion is greater than the length of the connecting channel, and the outer wall of the lower end of the cylindrical portion is provided with a dismounting portion.

[0023] On the basis of the above technical scheme, preferably, the diameter of the columnar light needle is 0.6mm-2mm, and the length of the columnar light needle is 10mm-25mm.

[0024] On the basis of the above technical scheme, preferably, a plurality of water and gas channels are arranged at the end of the light emitting portion facing the handle portion, the water and gas channels are connected with the mounting cavity, the outer peripheral side of the positioning sleeve is provided with an annular groove, the annular groove is connected with the mounting cavity, a plurality of water and gas nozzles are arranged at the inner portion of the positioning sleeve at equal intervals along the axial direction of the positioning sleeve, the water and gas nozzles are connected with the annular groove, and the first accommodating cavity is provided with a water and gas pipeline connected with the water and gas channels.

[0025] On the basis of the above technical scheme, preferably, the material of the coupling lens is any one of calcium fluoride, zinc selenide, sapphire or YAG, and the material of the reflecting mirror is metallic molybdenum or sapphire coated with a high-reflectivity film.

[0026] The present application has the following beneficial effects relative to the prior art:

[0027] (1) The utility model discloses a direct adoption of columnar light needle, and special coupling lens is designed, so that laser beam can form hollow light beam and contract in the columnar light needle through total reflection, form different form light spot energy distribution, compared with traditional conical light needle, the light needle design of the application not only simplifies the manufacturing process, reduces the complexity of grinding and polishing, also reduces production cost, compared with conical light needle, coupling area increases, and laser energy density relatively drops, so that the light needle is not easy to damage, and use is more safe, and it is not easy to break. Through reasonable selection the length of columnar light needle, the utility model discloses three typical light spot energy distribution can be realized, and flexible adaptation multiple treatment needs, improve treatment effect.

[0028] (2) By setting the conical angle of the light emitting surface to 174°-179°, the angle in this range allows the light beam passing through the coupling lens to exhibit hollow beam characteristics over a certain transmission distance. With this design, the coupling lens can transform the laser beam into a hollow ring-shaped beam with a conical divergence after the first focusing area. This ring-shaped beam enters the light needle through the entrance surface of the cylindrical light needle and is transformed into a hollow beam with a conical contraction through single total reflection inside the cylindrical surface of the light needle. This forms a second focusing area, where the beam is again transformed into a hollow ring-shaped beam with a conical divergence. By selecting the length of the light needle, the light emitting surface of the light needle can achieve sharp, flat-top, and ring-shaped laser beam distributions at different positions in the second focusing area.

[0029] (3) By installing the mounting sleeve and the columnar light needle together to form a combination, on the one hand, the columnar light needle is protected, and on the other hand, the columnar light needle is connected to the light emitting part through the mounting sleeve in a detachable manner, while ensuring accurate and reliable positioning and fixing.

[0030] (4) By designing the cooperation of the limiting channel and the connecting channel, the columnar light needle can be accurately fixed in the mounting channel. The position is limited by the stepped end face to ensure that the distance between the light entrance surface of the light needle and the reflection point of the reflector is accurate. The elastic buckle structure of the mounting sleeve is designed through the through slot, so that the clamping section can shrink radially during installation, facilitating the passage through the limiting channel, and restoring elastically after releasing external force to achieve stable fixation of the light needle. The overall scheme ensures accurate positioning and stable installation of the columnar light needle, improving the installation accuracy and use stability of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creating any inventive labor.

[0032] Figure 1 A three-dimensional structure schematic diagram of the erbium laser dental treatment device is disclosed in the utility model.

[0033] Figure 2 A plane sectional view of the erbium laser dental treatment device is disclosed in the utility model.

[0034] Figure 3 A Figure 2 A local enlarged view at A in the middle;

[0035] Figure 4 A first perspective view of the light emitting part, the positioning sleeve, the mounting sleeve and the columnar light needle is disclosed in the utility model.

[0036] Figure 5 A second perspective view of the light emitting part, the positioning sleeve, the mounting sleeve and the columnar light needle is disclosed in the utility model.

[0037] Figure 6 An assembly structure schematic diagram of the mounting sleeve and the columnar light needle is disclosed in the utility model.

[0038] Figure 7 A light beam transmission path state schematic diagram is disclosed in the utility model.

[0039] Figure 8 A concave energy distribution diagram of the light spot of the light entrance surface of the columnar light needle is disclosed in the utility model.

[0040] Figure 9 When the light needle length is 16mm, a columnar light needle exit light spot class sharp energy distribution diagram is disclosed in the utility model.

[0041] Figure 10 When the light needle length is 17.5mm, a columnar light needle exit light spot class flat-top energy distribution diagram is disclosed in the utility model.

[0042] Figure 11 When the light needle length is 21mm, a concave energy distribution diagram of the light spot of the columnar light needle is disclosed in the utility model.

[0043] Reference signs:

[0044] 1, equipment body; 11, handle part; 12, light emitting part; 110, first accommodating cavity; 121, second accommodating cavity; 122, mounting cavity; 13, positioning sleeve; 131, mounting channel; 1311, limiting channel; 1312, connecting channel; 123, water and gas channel; 132, annular groove; 133, water and gas nozzle; 111, water and gas pipeline; 2, light path assembly; 21, erbium laser emitter; 22, collimating lens; 23, coupling lens; 24, reflecting mirror; 25, columnar light needle; L1, first light path; 231, light entrance surface; 232, light exit surface; L2, second light path; 3, mounting sleeve; 31, cylindrical part; 32, elastic buckle structure; 321, thin wall section; 322, clamping section; 320, through slot; 3221, first guide cone surface; 1311a, second guide cone surface; 311, sealing element; 312, dismounting part. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0046] As shown in the drawings, Figure 1 in conjunction with Figures 2-3 The erbium laser dental treatment device disclosed by the embodiments of the present application comprises an equipment body 1 and a light path assembly 2.

[0047] Among them, the equipment body 1, as a support structure, provides a fixed and operated platform for other components. The light path assembly 2 is arranged inside, so that the whole system is compact and easy to operate. In some embodiments, the whole equipment body 1 is in a rod-shaped structure, which is small in size and convenient for dental operation treatment operation.

[0048] The light path assembly 2 is composed of a plurality of optical elements, including an erbium laser emitter 21, a collimating lens 22, a coupling lens 23, a reflecting mirror 24 and a columnar light needle 25. These optical elements jointly act to realize the generation, adjustment and transmission of laser, and the design of the light path assembly 2 optimizes the coupling efficiency and energy transmission effect of the laser beam.

[0049] In this embodiment, an erbium laser emitter 21 and a collimating lens 22 are spaced apart within the main body 1 along the first optical path L1. The erbium laser emitter 21 provides a laser source, and the laser beam emitted by it enters the collimating lens 22. The collimating lens 22 collimates the laser beam emitted by the erbium laser emitter 21, ensuring stable transmission of the laser beam along the first optical path L1, guaranteeing that the laser transmission in subsequent optical components does not deviate and ensuring efficient transmission.

[0050] The coupling lens 23 is positioned in the output light path of the collimating lens 22, with its incident surface 231 being a convex spherical surface and its exit surface 232 being a conical surface. This lens design results in a hollow beam after the light beam passes through the coupling lens 23. The divergence of the conical surface concentrates the laser energy distribution around the periphery of the beam, creating a hollow region in the center. This hollow beam characteristic is crucial for the subsequent design of the cylindrical optical needle 25, ensuring that the laser beam is transmitted into the needle with a suitable energy distribution.

[0051] The reflector 24 is located on the light-emitting side of the coupling lens 23 and is tilted at a 45° angle to the first optical path L1. Its main function is to reflect the laser beam passing through the coupling lens 23 to the second optical path L2, which is perpendicular to the first optical path L1, thereby guiding the beam to the cylindrical light needle 25. The angle setting of the reflector 24 ensures that the beam passing through the coupling lens 23 can be reflected and effectively transmitted to the cylindrical light needle 25 through the second optical path L2.

[0052] The coupling lens 23 is made of any one of calcium fluoride, zinc selenide, sapphire or YAG, and the reflector 24 is made of molybdenum or sapphire coated with a high-reflection film.

[0053] The columnar optical needle 25 is detachably mounted on the main body 1 of the equipment, with its light-incident end face aligned with the second optical path L2. It can accurately receive the laser beam transmitted through the reflector 24. The design of the columnar optical needle 25 allows the beam to undergo total internal reflection within the needle and form a stable light spot distribution.

[0054] The columnar light needle 25 is made of materials such as sapphire or YAG.

[0055] See attached document Figure 7 The diagram shows the beam transmission path. Specifically, the erbium laser emitter 21 outputs a beam that is collimated by the collimating lens 22 into an approximately parallel beam. After passing through the coupling lens 23, it forms a focused solid beam. After passing through the focal region and then through a reflecting mirror 24, it forms a hollow, diverging beam. This hollow, diverging beam is incident on the incident surface of the cylindrical light needle 25, forming a hollow, annular beam distribution at the incident surface (see attached diagram). Figure 8As shown in the figure), the divergent hollow light beam is in the cylindrical light needle, and after one-time total reflection of the cylindrical surface, a gradually convergent hollow light beam is formed in the light needle for transmission, and the convergent hollow light beam forms a solid sharp light beam intensity distribution at a position of the focusing area, and after the focusing area, the convergent hollow light beam gradually transmits into a flat-top and hollow light beam.

[0056] By selecting different light needle lengths, three kinds of light beam intensity distributions of sharp, flat-top and hollow ring are obtained at the light emitting surface of the light needle.

[0057] The utility model discloses a cylindrical light needle 25 is directly used, and special coupling lens 23 is designed, so that after the laser beam is focused through the coupling lens, the light beam will present the hollow light beam of divergent form in a certain transmission distance, and after one-time total reflection of the cylindrical surface in the cylindrical light needle, the light beam becomes the light beam of internal hollow and taper contraction, forms a focusing area, selects the length of the light needle to make the light emitting surface of the light needle be at the different positions of the second focusing area, can obtain the laser beam distribution of sharp, flat-top and ring at the light emitting surface of the light needle, forms the light spot energy distribution of different forms, compared with the traditional taper light needle, the light needle design of the application not only simplifies the manufacturing process, reduces the complexity of grinding and polishing, but also reduces the production cost, compared with the taper light needle, the coupling area increases, and the laser energy density relatively drops, so that the light needle is not easy to damage, and the use is safer, and is not easy to break. Through reasonable selection of the length of the cylindrical light needle, the utility model can realize three typical light spot energy distributions, flexibly adapt to various treatment needs, and improve the treatment effect.

[0058] As some embodiments, the spherical curvature radius of the light entrance surface of the coupling lens is 8mm-50mm, and the conical angle of the light exit surface of the coupling lens is 174°-179°.

[0059] As some examples, the spherical curvature radius of the light entrance surface 231 of the coupling lens 23 of the present example is 30mm, the conical angle of the light exit surface of the coupling lens 23 is 175°, the material of the coupling lens is zinc selenide, and the optical path from the light exit surface to the light entrance surface of the light needle is 10mm.

[0060] The spherical refraction and the light cone surface refraction can focus the laser beam, and the light cone surface refraction can also produce focusing, and the light cone surface can diffuse the central energy distribution of the light beam to the outside of the light beam.

[0061] The spherical radius of curvature and the cone angle of the light cone are matched to meet the requirements of coupling the collimated erbium laser beam into a cylindrical light needle with a certain optical path distance and performing a total reflection in the cylindrical light needle with a certain diameter and length. The annular beam is formed at the light entrance surface of the light needle, which increases the area of the coupling spot and reduces the laser energy density on the light entrance surface of the light needle and the damage of the erbium laser pulse to the light entrance surface. By selecting a light needle with a proper length, a point-shaped sharp spot, a flat-top circular spot and an annular spot can be obtained at the light exit surface.

[0062] Due to the different refractive indexes of different materials, in order to achieve the same coupling and focusing effect, the spherical radius of curvature and the cone angle of the corresponding materials will be different.

[0063] The embodiment shows an embodiment of the device body. Specifically, referring to the accompanying drawings, Figures 1-3 As shown in the figure, the device body 1 includes a handle part 11 and a light exit part 12 connected to the end of the handle part 11.

[0064] The handle part 11 serves as the main body of the operation and provides a control and operation platform for the user to control and operate the laser dental treatment device. In this example, the handle part 11 has a rod structure, which is convenient for the operator to hold. The handle part 11 is provided with a first accommodating cavity 110, and the erbium laser emitter 21 and the collimating lens 22 are fixed in the first accommodating cavity 110 along a first light path L1. The first accommodating cavity 110 serves to accommodate the erbium laser emitter 21 and the collimating lens 22, ensuring that they are in a fixed position during operation to avoid shaking or deviation, thereby ensuring stable transmission of the laser beam.

[0065] The light exit part 12 is installed at the end of the handle part 11 and can be connected by threads or other means. The main function of the light exit part 12 is to conduct the laser beam from the laser source to the treatment area. The light exit part 12 is provided with a second accommodating cavity 121, and the coupling lens 23 and the mirror 24 are fixed in the second accommodating cavity 121. The cavity is associated with the laser light path to ensure smooth transmission of the light beam through the light path assembly 2 to the cylindrical light needle 25.

[0066] The cylindrical light needle 25 can be detachably installed at the distal end of the light exit part 12, and the user can replace light needles of different lengths or different types as needed. Through this structure, the flexibility of the treatment device is improved, and appropriate light needles can be selected according to different treatment needs (such as hard tissue cutting, soft tissue treatment, etc.).

[0067] In order to facilitate the detachable installation of the cylindrical light needle 25 at the distal end of the light exit part 12, the embodiment also provides the following technical solutions to achieve this.

[0068] Referring to the accompanying drawingsFigures 3-6 As shown, the light emitting part 12 is provided with a mounting cavity 122 at one end away from the handle part 11, and the mounting cavity 122 is provided to provide a stable space for mounting and fixing the light needle. The mounting cavity 122 is fixedly provided with a positioning sleeve 13, the positioning sleeve 13 and the mounting cavity 122 are connected in a threaded sealing manner, the positioning sleeve 13 is provided with a mounting channel 131 at the center axis of the positioning sleeve 13, the mounting channel 131 is coaxial with the second light path L2. By providing the positioning sleeve 13 and the mounting channel 131 on the positioning sleeve 13, the cylindrical light needle is convenient to install. The mounting channel 131 is coaxial with the second light path L2, so that the light beam reflected by the reflector 24 will not deviate during transmission and can accurately enter the inside of the cylindrical light needle 25, thereby ensuring the transmission efficiency and treatment effect of the laser beam.

[0069] In this embodiment, since the cylindrical light needle 25 is cylindrical, if the cylindrical light needle 25 is simply inserted into the mounting channel 131, on the one hand, it is difficult to position the vertical distance between the light entrance surface 231 and the reflection point of the reflector 24, and on the other hand, it is difficult to fix the cylindrical light needle 25 and the mounting channel 131. If the mounting channel 131 and the cylindrical light needle 25 are connected in an interference fit, it is not only inconvenient to disassemble, but also the cylindrical light needle may be broken during installation due to hard friction.

[0070] Therefore, the embodiment is provided with a mounting sleeve 3, which is fixed to the light entrance end outside of the cylindrical light needle 25 to form an assembly. In this way, the cylindrical light needle 25 can be protected by the mounting sleeve 3, and the connection of the cylindrical light needle 25 in the mounting channel 131 can be realized by connecting the mounting sleeve 3 and the mounting channel 131. In order to facilitate disassembly, the mounting sleeve 3 of the embodiment is inserted into the mounting channel 131 and is clamped therewith.

[0071] In order to realize the fixed installation of the cylindrical light needle 25 by means of the mounting sleeve 3 and the mounting channel 131, the embodiment adopts the following technical scheme for implementation.

[0072] The mounting channel 131 of the embodiment includes a limiting channel 1311 and a connecting channel 1312 which are in communication with each other. The limiting channel 1311 is adjacent to the second accommodating cavity 121. Specifically, the connecting channel 1312 is located at the insertion end of the mounting channel 131, and the limiting channel 1311 is located at the outlet end of the mounting channel 131. In this example, the inner diameter of the connecting channel 1312 is greater than the inner diameter of the limiting channel 1311, thereby forming a stepped end face between the connecting channel 1312 and the limiting channel 1311. In this way, after the mounting sleeve 3 is mounted in place, the position of the mounting sleeve 3 can be limited by the stepped end face, thereby determining the accurate position of the cylindrical light needle 25 in the mounting channel 131, and ensuring that the distance between the light entrance surface 231 of the cylindrical light needle 25 and the reflection point of the reflector 24 is constant.

[0073] Referring to the drawings Figure 6 As shown, the mounting sleeve 3 comprises a cylindrical portion 31 and an elastic buckle structure 32 integrally formed with the cylindrical portion 31, the elastic buckle structure 32 comprises a thin-walled section 321 and a clamping section 322, the thin-walled section 321 connects the cylindrical portion 31 and the clamping section 322, and the diameter of the thin-walled section 321 is smaller than the diameter of the cylindrical portion 31; the outer diameter of the cylindrical portion 31 matches the inner diameter of the connecting channel 1312, the outer diameter of the thin-walled section 321 is in clearance fit with the inner diameter of the limiting channel 1311, the outer diameter of the clamping section 322 is larger than the inner diameter of the limiting channel 1311, and the elastic buckle structure 32 is uniformly distributed with a plurality of through grooves 320 in the circumferential direction to form elastic pieces capable of being radially contracted; the elastic buckle structure 32 passes through the limiting channel 1311, and the clamping section 322 is clamped with the outlet end surface of the limiting channel 1311, and the end surface of the cylindrical portion 31 abuts against the end surface of the connecting channel 1312.

[0074] In some embodiments, the through grooves 320 are only uniformly opened along the outer periphery of the clamping section 322. The clamping section 322 is formed with a plurality of elastic piece structures due to the arrangement of the through grooves 320, so that the clamping section 322 can be inwardly contracted when the outer side of the clamping section 322 is subjected to extrusion force, facilitating the passage through the limiting channel 1311, and the clamping section 322 elastically restores when the external force disappears, so as to be clamped to the outlet end surface of the limiting channel 1311. In other embodiments, the through grooves 320 are opened on both the clamping section 322 and the thin-walled section 321, so that the clamping section 322 can drag the elastic pieces formed by the thin-walled section 321 to elastically deform together when the outer side of the clamping section 322 is subjected to extrusion force, so that the elastic buckle structure 32 as a whole has a larger elastic deformation amount and is more easily passed through the limiting channel 1311.

[0075] By adopting the above technical solution, when the columnar light needle 25 is initially installed, it is inserted into the mounting sleeve 3, and the light-incident surface 231 of the columnar light needle 25 is located inside the elastic buckle structure 32, specifically, the light-incident surface 231 of the columnar light needle 25 does not protrude above the joint between the thin-walled section 321 and the clamping end, avoiding that the clamping section 322 is blocked by the columnar light needle 25 when it is inwardly deformed.

[0076] Specifically, the installation process is as follows: the mounting sleeve 3 with the columnar light needle 25 is inserted into the connecting channel 1312 from one end of the elastic buckle structure 32, after the elastic buckle structure 32 passes through the connecting channel 1312, the clamping section 322 is inwardly contracted when passing through the limiting channel 1311, realizing that the elastic buckle structure 32 as a whole is inserted into the limiting channel 1311, and after the clamping section 322 passes through the limiting channel 1311, the clamping section 322 restores under its own elastic deformation to clamp the outlet end of the limiting channel 1311, at this time, the end surface of the joint between the cylindrical portion 31 and the thin-walled section 321 abuts against the end surface of the connecting channel 1312, realizing accurate positioning and fixing of the mounting sleeve 3 in the installation channel 131.

[0077] The cooperation of the limiting channel 1311 and the connecting channel 1312 enables the columnar light needle 25 to be accurately fixed in the mounting channel 131. The position is limited by the stepped end face, and the distance between the light-incident surface 231 of the light needle and the reflection point of the reflecting mirror 24 is accurately consistent. The elastic buckle structure 32 of the mounting sleeve 3 is designed to pass through the groove 320, so that the clamping section 322 can be radially contracted during installation, facilitating the passage through the limiting channel 1311, and restoring elastically after the external force is released, thereby realizing the stable fixation of the light needle. The overall scheme ensures the accurate positioning and stable installation of the columnar light needle 25, and improves the installation precision and use stability of the equipment.

[0078] In order to facilitate the disassembly of the columnar light needle 25 in the mounting channel 131, the scheme adopted in this embodiment is that the outer peripheral side of the end of the clamping section 322 away from the thin-walled section 321 has a first guide cone surface 3221, and the inner wall of the outlet end of the limiting channel 1311 has a second guide cone surface 1311a. By this setting, when the clamping section 322 passes through the limiting channel 1311, it can be smoothly guided into the limiting channel 1311 under the guidance of the first guide cone surface 3221, realizing the rapid installation of the mounting sleeve 3. When disassembly is needed, the mounting sleeve 3 is pulled along the mounting channel 131 in the direction of the connecting channel 1312. When the clamping section 322 is subjected to an axial pulling force, the clamping section 322 will pass the second guide cone surface 1311a and shrink inward, thereby entering the limiting channel 1311, and finally smoothly completing the disassembly of the mounting sleeve 3 and the columnar light needle assembly in the mounting channel 131. The whole structure is easy to operate and implement, and different lengths of columnar light needles can be quickly replaced according to actual needs.

[0079] As some embodiments, at least one sealing member 311 is fixedly arranged on the outer side of the cylindrical portion 31 along the axial direction thereof. The cylindrical portion 31 is sealingly connected with the inner wall of the connecting channel 1312 through the sealing member 311. The sealing member 311 is arranged to tightly fit the cylindrical portion 31 and the connecting channel 1312, thereby avoiding light leakage. The length of the cylindrical portion 31 is greater than that of the connecting channel 1312, and the outer wall of the lower end of the cylindrical portion 31 is provided with a disassembly portion 312. By this arrangement, when the columnar light needle 25 is disassembled, the mounting sleeve 3 can be pulled through the disassembly portion 312 to provide a force point.

[0080] It is worth noting that the position of the light-incident surface 231 of the columnar light needle 25 in the mounting sleeve 3 is fixed after the columnar light needle 25 of different lengths is installed in the mounting sleeve 3. In this way, when the columnar light needle 25 is installed and positioned in the mounting channel 131 through the mounting sleeve 3, the distance between the light-incident surface 231 of all lengths of the columnar light needle 25 and the reflection point of the reflecting mirror 24 is consistent, thereby ensuring that after the optical parameters of the whole treatment device are set, only the columnar light needle 25 of different lengths needs to be replaced according to actual needs, so as to meet the different light spot energy distribution requirements, which is simple to operate and has strong applicability.

[0081] As some embodiments, the diameter of the columnar light needle 25 is 0.6mm-2mm, and the length of the columnar light needle 25 is 10mm-25mm. The embodiment shows the light spot distribution of three different length light needles, Figure 9 the sharp light beam intensity distribution diagram of the short length light needle (16mm), Figure 10 the flat top light beam intensity distribution of the medium length light needle (17.5mm), Figure 11 the hollow light beam intensity distribution of the long length light needle (21mm).

[0082] In order to cool and clean the treatment place of the patient's oral cavity during the operation process, and improve the treatment comfort of the patient. The embodiment further sets the following technical scheme.

[0083] The water and gas passage 123 is connected with the installation cavity 122, the annular groove 132 is located on the outer circumferential side of the positioning sleeve 13 and is connected with the installation cavity 122, the water and gas nozzles 133 are equidistantly arranged around the axis direction of the positioning sleeve 13, the water and gas nozzles 133 are connected with the annular groove 132, and the first containing cavity 110 is provided with the water and gas pipeline 111 connected with the water and gas passage 123.

[0084] Therefore, the external air source and the water source are connected with the water and gas pipeline 111 at the end of the handle part 11 away from the light emitting part 12, the cooling water and the air are mixed after entering the installation cavity 122 through the water and gas pipeline 111, then enter the annular groove 132, and the water vapor is sprayed in the direction of the columnar light needle through each water and gas nozzle 133. On the one hand, the columnar light needle can be cooled and cooled, and on the other hand, the treatment place of the patient's oral cavity can be cooled and cleaned, and the treatment comfort of the patient is improved.

[0085] The above only describes the preferred embodiments of the present application and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An erbium laser dental treatment device, characterized in that, The application relates to a fiber laser device, which comprises the following parts: a device body (1); a light path assembly (2) arranged in the device body (1) and comprising an erbium laser emitter (21), a collimating lens (22), a coupling lens (23), a reflecting mirror (24) and a columnar light needle (25); wherein, the erbium laser emitter (21) and the collimating lens (22) are arranged in the device body (1) along a first light path (L1) at intervals; the coupling lens (23) is arranged on the light exit path of the collimating lens (22), and the light entrance surface (231) of the coupling lens (23) is a convex spherical surface, and the light exit surface (232) of the coupling lens (23) is a conical surface; the reflecting mirror (24) is arranged on the light exit side of the coupling lens (23) and forms a 45-degree angle with the first light path (L1), and is used for reflecting the laser beam passing through the coupling lens (23) to a second light path (L2) perpendicular to the first light path (L1); the columnar light needle (25) is detachably mounted on the device body (1), and the light entrance end surface of the columnar light needle (25) is aligned with the second light path (L2).

2. The erbium laser dental treatment device of claim 1, wherein: The spherical curvature radius of the light entrance surface (231) of the coupling lens (23) is 8mm-50mm, and the conical angle of the light exit surface (232) of the coupling lens (23) is 174-179.

3. The erbium laser dental treatment device of claim 1, wherein: The device body (1) comprises a handle part (11) and a light exit part (12) connected to the end of the handle part (11), the first accommodating cavity (110) is arranged in the handle part (11), the erbium laser emitter (21) and the collimating lens (22) are fixed in the first accommodating cavity (110) along the first light path (L1), the second accommodating cavity (121) is arranged in the light exit part (12), the coupling lens (23) and the reflecting mirror (24) are fixed in the second accommodating cavity (121), and the columnar light needle (25) is detachably mounted at the distal end of the light exit part (12).

4. The erbium laser dental treatment device of claim 3, wherein: An installation cavity (122) is arranged at the end of the light exit part (12) away from the handle part (11), a positioning sleeve (13) is fixedly arranged in the installation cavity (122), an installation channel (131) is arranged at the center axis of the positioning sleeve (13) and communicates with the second accommodating cavity (121), the installation channel (131) is coaxial with the second light path (L2), an installation sleeve (3) is fixedly arranged outside the light entrance end of the columnar light needle (25), and the installation sleeve (3) is inserted into the installation channel (131) and is clamped with the installation channel (131).

5. The Erbium laser dental treatment device of claim 4, wherein: The installation channel (131) comprises a limiting channel (1311) and a connecting channel (1312) which communicate with each other, the limiting channel (1311) is adjacent to the second accommodating cavity (121), and the inner diameter of the connecting channel (1312) is smaller than that of the limiting channel (1311). The mounting sleeve (3) comprises a cylindrical portion (31) and an elastic buckle structure (32) integrally formed with the cylindrical portion (31), the elastic buckle structure (32) comprises a thin-walled section (321) and a clamping section (322), the thin-walled section (321) connects the cylindrical portion (31) and the clamping section (322) and has a diameter smaller than that of the cylindrical portion (31); the outer diameter of the cylindrical portion (31) matches the inner diameter of the connecting channel (1312), the outer diameter of the thin-walled section (321) clearance fits the inner diameter of the limiting channel (1311), the outer diameter of the clamping section (322) is greater than the inner diameter of the limiting channel (1311), and the elastic buckle structure (32) is circumferentially and uniformly provided with a plurality of through grooves (320) to form a radially contractible elastic sheet. The elastic buckle structure (32) passes through the limiting channel (1311), and the clamping section (322) is clamped with the outlet end surface of the limiting channel (1311), and the end surface of the cylindrical portion (31) abuts against the end surface of the connecting channel (1312).

6. The Erbium laser dental treatment device of claim 5, wherein: The outer periphery of one end of the clamping section (322) away from the thin-walled section (321) is provided with a first guide conical surface (3221), and the inner wall of the outlet end of the limiting channel (1311) is provided with a second guide conical surface (1311a).

7. The Erbium laser dental treatment device of claim 5, wherein: At least one sealing member (311) is fixedly arranged on the outer side of the cylindrical portion (31) along the axial direction of the cylindrical portion (31), the cylindrical portion (31) is sealingly connected with the inner wall of the connecting channel (1312) through the sealing member (311), the length of the cylindrical portion (31) is greater than the length of the connecting channel (1312), and the outer wall of the lower end of the cylindrical portion (31) is provided with a dismounting portion (312).

8. The erbium laser dental treatment device of claim 1, wherein: The diameter of the columnar light needle (25) is 0.6mm-2mm, and the length of the columnar light needle (25) is 10mm-25mm.

9. The erbium laser dental treatment device of claim 4, wherein: A plurality of water and gas channels (123) are arranged at one end of the light emitting portion (12) facing the handle portion (11), the water and gas channels (123) and the mounting cavity (122) are in communication, the outer periphery of the positioning sleeve (13) is provided with an annular groove (132), the annular groove (132) and the mounting cavity (122) are in communication, a plurality of water and gas nozzles (133) are arranged at equal intervals in the inner portion of the positioning sleeve (13) around the axial direction of the positioning sleeve (13), the water and gas nozzles (133) and the annular groove (132) are in communication, and the first containing cavity (110) is provided with a water and gas pipeline (111) connected with the water and gas channels (123).

10. The Erbium laser dental treatment device according to claim 1 or 2, characterized in that: The coupling lens (23) is made of any one of calcium fluoride, zinc selenide, sapphire or YAG, and the reflecting mirror (24) is made of molybdenum or sapphire coated with a high-reflectivity film.

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