Laser treatment hand tool and laser treatment equipment

Abstract

The utility model provides a laser treatment hand tool and laser treatment equipment, and relates to the technical field of laser treatment. The laser treatment hand tool comprises an outer cylinder and an inner shell internally provided with a containing cavity. The two ends of the outer cylinder are open, and locking holes are formed in the side wall of the outer cylinder. A guide hole is formed in the side wall of the external section, an insertion hole is formed in the side wall of the internal insertion section, a first exit opening is formed in the insertion end of the internal insertion section, the internal insertion section is inserted into the outer cylinder in a matched mode, and the insertion hole corresponds to the locking hole; a locking piece is arranged in the containing cavity and comprises a pressing head inserted into the guide hole and extending outwards, a locking head inserted into the insertion hole and the locking hole and a connecting base connected between the pressing head and the locking head, and the connecting base is connected to the inner shell through an elastic structure. The laser treatment equipment comprises a laser and the laser treatment hand tool. The laser treatment hand tool is high in use convenience, so that the laser treatment efficiency is high, and meanwhile, optical elements in the laser treatment hand tool cannot be damaged in the disinfection process.

Description

Technical Field

[0001] The utility model relates to the technical field of laser treatment, in particular to a laser treatment handpiece and a laser treatment device. Background Art

[0002] Laser treatment has been widely applied due to its advantages of small trauma and fast recovery. When using a laser treatment device, an operator generally performs laser treatment on a patient through a laser treatment handpiece. Before laser treatment, the laser treatment handpiece needs to be disinfected. However, in the prior art, the poor usability of the laser treatment handpiece leads to low laser treatment efficiency. At the same time, the internal optical elements are easily damaged during the disinfection process. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a laser treatment handpiece and a laser treatment device to solve the technical problems that the poor usability of the existing laser treatment handpiece leads to low laser treatment efficiency, and at the same time, the internal optical elements are easily damaged during the disinfection process.

[0004] To solve the above problems, the utility model provides a laser treatment handpiece, which includes an outer cylinder and an inner shell with an accommodation cavity inside. Both ends of the outer cylinder are open, and locking holes are provided on the cylinder side wall thereof. The inner shell includes an outer section with a guiding hole provided on the side wall and an inner insertion section with a plugging hole provided on the side wall and a first outlet provided at the plugging end along its length direction. The inner insertion section is cooperatively plugged into the outer cylinder, and the plugging hole corresponds to the locking hole.

[0005] A locking member is arranged in the accommodation cavity. The locking member includes a pressing head plugged into the guiding hole and extending outwards, a locking head plugged into the plugging hole and the locking hole, and a connecting seat connected between the pressing head and the locking head. The connecting seat is connected to the inner shell through an elastic structure.

[0006] Optionally, the length of the inner insertion section is more than 3 times the length of the outer section.

[0007] Optionally, a guiding step is arranged in the accommodation cavity. The guiding step surface of the guiding step is parallel to the radial cross-section of the inner shell, and one end surface of the connecting seat is cooperatively abutted against the guiding step surface.

[0008] Optionally, the elastic structure includes two elastic members, and the two elastic members are arranged at intervals along the length direction of the inner shell.

[0009] Optionally, along the length direction of the inner shell, the pressing head is located between the two elastic members.

[0010] Optionally, there are two guiding holes, which are located on two opposite sides of the external section along the radial direction. The plugging holes, the locking holes and the locking members corresponding to the guiding holes are all two. The accommodating cavity is provided with a support. There are two groups of elastic structures. One group of elastic structures is connected between one of the connecting seats and the support, and the other group of elastic structures is connected between the other connecting seat and the support.

[0011] Optionally, the elastic structure includes an elastic member. The connecting seat is provided with a first limiting groove, and one end of the elastic member facing the connecting seat is plugged into the first limiting groove.

[0012] And / or, the support is provided with a second limiting groove, and one end of the elastic member facing the support is plugged into the second limiting groove.

[0013] Optionally, the elastic member is a conical spring. The constricted end of the conical spring is plugged into the first limiting groove to be connected to the connecting seat; and / or, the flared end of the conical spring is plugged into the second limiting groove to be connected to the support.

[0014] Optionally, the support is provided with a channel for the optical fiber to pass through.

[0015] Optionally, the external section protrudes outwards relative to the inserted section to form an annular step. The end face of the outer cylinder facing the external section abuts against the annular step surface of the annular step, and the outer side wall of the outer cylinder is coplanar with the outer side wall of the external section.

[0016] The present utility model also provides a laser treatment device, which includes a laser and the above-mentioned laser treatment handpiece, and the laser treatment handpiece is connected to the laser.

[0017] The laser treatment handpiece provided by the present utility model is applied to a laser treatment device. On the one hand, during the laser treatment process, the probability that the external section of the inner shell far from the treatment outgoing end comes into contact with the patient or is contaminated is relatively small, while the inserted section close to the treatment outgoing end is covered and protected inside the outer cylinder. Therefore, before and after the treatment, the outer cylinder can be disassembled and only the outer cylinder can be disinfected, without the need to disinfect the inner shell, thereby improving the use convenience of the laser treatment handpiece and ensuring the normal use of the optical elements inside the inner shell. On the other hand, when disassembling and assembling the outer cylinder, only need to press the pressing head inwards, and then pull out the outer cylinder and the inner shell away from each other or insert the outer cylinder and the inner shell towards each other, then the disassembly and assembly operation of the outer cylinder and the inner shell can be conveniently realized. The disassembly and assembly convenience is relatively high, which further improves the use convenience of the laser treatment handpiece, and at the same time can also improve the treatment efficiency of the laser treatment device. Description of the Drawings

[0018] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 Schematic diagram when the laser treatment handpiece is connected to the jumper provided by an embodiment of the present invention;

[0020] Figure 2 Partial cross-sectional view of the laser treatment handpiece provided by an embodiment of the present invention;

[0021] Figure 3 For Figure 2 Partial enlarged view of A in

[0022] Figure 4 Schematic diagram of the disassembled state of the inner shell and the outer cylinder in the laser treatment handpiece provided by an embodiment of the present invention;

[0023] Figure 5 Explosion diagram of the locking member, elastic structure and support in the laser treatment handpiece provided by an embodiment of the present invention.

[0024] Explanation of reference numerals:

[0025] 100 - outer cylinder; 110 - locking hole; 120 - plug-in port; 130 - second exit port; 140 - annular end face; 200 - inner shell; 210 - accommodating cavity; 220 - external section; 221 - guiding hole; 230 - inner insertion section; 231 - plug-in hole; 240 - guiding step; 241 - guiding step surface; 250 - support; 251 - second limiting groove; 252 - channel; 260 - annular step; 261 - annular step surface; 270 - optical element; 300 - locking member; 310 - pressing head; 320 - locking head; 321 - guiding cone; 330 - connecting seat; 331 - first limiting groove; 400 - elastic structure; 410 - elastic member; 500 - jumper. Specific embodiments

[0026] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the drawings. Obviously, the described embodiments are some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0027] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0028] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] This embodiment provides a laser treatment handpiece, as Figures 1-4 shown, which includes an outer cylinder 100 and an inner shell 200 with an accommodation cavity 210 provided therein. Both ends of the outer cylinder 100 are open, and its cylinder side wall is provided with locking holes 110; the inner shell 200 includes an outer section 220 with a guiding hole 221 provided on its side wall and an inner insertion section 230 with a plugging hole 231 provided on its side wall and a first outlet provided at the plugging end. The inner insertion section 230 is fitted and plugged into the outer cylinder 100, and the plugging hole 231 corresponds to the locking hole 110; a locking member 300 is provided in the accommodation cavity 210. The locking member 300 includes a pressing head 310 plugged into the guiding hole 221 and extending outwards, a locking head 320 plugged into the plugging hole 231 and the locking hole 110, and a connecting seat 330 connecting between the pressing head 310 and the locking head 320. The connecting seat 330 is connected to the inner shell 200 through an elastic structure 400.

[0030] This embodiment also provides a laser treatment device, which includes a laser and the above-mentioned laser treatment handpiece, and the laser treatment handpiece is connected to the laser.

[0031] The laser treatment handpiece provided in this embodiment is applied to a laser treatment device. The inner shell 200 has an optical channel, and optical elements 270 such as lenses and optical fibers are arranged in the optical channel. The accommodating cavity 210 communicates with the optical channel, and the optical fiber passes through the accommodating cavity 210. One end of the outer cylinder 100 serves as a plug-in port 120 for the inner insertion section 230 to be inserted, and the other end is provided with a second outlet 130 for the treatment laser to be emitted. Among them, a treatment head is arranged in the region of the inner cavity of the outer cylinder 100 close to the second outlet 130 or at the outer end of the second outlet 130, and the treatment head is of different models according to different laser treatment modes.

[0032] When the inner shell 200 and the outer cylinder 100 are in the installed state, the elastic structure 400 is not affected by external forces, and it exerts an elastic force on the connecting seat 330 in the direction of the guiding hole 221 and the plugging hole 231, so as to ensure that the pressing head 310 and the locking head 320 are respectively stably plugged into the guiding hole 221 and the plugging hole 231. At this time, the pressing head 310 extends out of the guiding hole 221, the locking head 320 extends out of the plugging hole 231 and is plugged into the locking hole 110, and the length of the pressing head 310 extending out of the guiding hole 221 is greater than the length of the locking head 320 plugged into the locking hole 110.

[0033] Before and after treatment, especially before treatment, the pressing head 310 can be pressed until the locking head 320 retracts into the plugging hole 231, and the outer cylinder 100 can be conveniently pulled outwards, and the outer cylinder 100 can be disinfected.

[0034] During use, according to the required laser treatment mode, the outer cylinder 100 carrying the corresponding treatment head is selected. The outer cylinder 100 has been disinfected. Then, the inner insertion section 230 is inserted into the outer cylinder 100 through the plug-in port 120. When the plug-in port 120 of the outer cylinder 100 reaches the locking head 320, the pressing head 310 is pressed inwards. The pressing head 310 drives the connecting seat 330 to overcome the elastic force of the elastic structure 400 inwards and drives the locking head 320 to move inwards synchronously with it until the locking head 320 retracts into the plugging hole 231 and no longer protrudes from the outer side wall of the inner insertion section 230. The inner insertion section 230 and the outer cylinder 100 are continuously plugged in towards each other until the locking hole 110 of the outer cylinder 100 corresponds to the plugging hole 231 inside and outside. The pressing head 310 is released, the elastic structure 400 is no longer affected by external forces, and it drives the connecting seat 330 to drive the pressing head 310 to extend out of the guiding hole 221, the locking head 320 to extend out of the plugging hole 231 and be plugged into the locking hole 110, thereby locking the outer cylinder 100 and the inner shell 200 together and completing the detachable fixation of the outer cylinder 100 and the inner shell 200. Then, the laser can be adjusted to emit the treatment laser adapted to the laser treatment mode into the inner shell 200. The treatment laser is transmitted through the optical elements 270 inside the inner shell 200 and then emitted through the first outlet to the treatment head, and then emitted through the treatment head. The operator uses the corresponding treatment head and treatment laser to perform laser treatment on the patient in the corresponding mode.

[0035] The laser treatment handpiece provided in this embodiment is applied to a laser treatment device. On the one hand, during the laser treatment process, the external section 220 of the inner shell 200 away from the treatment-emitting end has a relatively low probability of contacting the patient or being contaminated, while the inner insertion section 230 near the treatment-emitting end is covered and protected inside the outer cylinder 100. Therefore, before and after the treatment is completed, the outer cylinder 100 can be disassembled and only the outer cylinder 100 needs to be disinfected, without the need to disinfect the inner shell 200, thereby improving the convenience of using the laser treatment handpiece and ensuring the normal use of the optical element 270 inside the inner shell 200. On the other hand, when disassembling and assembling the outer cylinder 100, only need to press the pressing head 310 inward and pull out or insert the outer cylinder 100 and the inner shell 200 away from or towards each other, then the disassembly and assembly operation of the outer cylinder 100 and the inner shell 200 can be conveniently realized, with a relatively high disassembly and assembly convenience, further improving the convenience of using the laser treatment handpiece, and at the same time, it can also improve the treatment efficiency of the laser treatment device.

[0036] Specifically, as Figure 1 shown, the optical element 270 and the laser can be connected through a jumper wire 500.

[0037] Specifically, in this embodiment, as Figure 2 and Figure 4 shown, the length of the inner insertion section 230 is more than 3 times the length of the external section 220. During the laser treatment process, the outer cylinder 100 can completely cover the inner insertion section 230. Correspondingly, the outer cylinder 100 can cover a relatively long length of the inner shell 200 near the treatment-emitting end, thereby avoiding the external section 220 from contacting the patient and being contaminated during the treatment, and ensuring the cleanliness of using the laser treatment handpiece by disinfecting the outer cylinder 100. In addition, during operation, the operator can hold the outer cylinder 100, reducing the occurrence of the unlocking of the locking head 320 caused by the operator accidentally touching the pressing head 310, thereby ensuring the connection stability and firmness of the outer cylinder 100 and the inner shell 200 during the operation process.

[0038] In this embodiment, as Figure 3As shown, a guide step 240 is provided in the accommodating cavity 210, and a guide step surface 241 of the guide step 240 is parallel to the radial cross section of the inner shell, and one end surface of the connecting seat 330 is matched and abutted against the guide step surface 241. When the connecting seat 330 moves inward under the pressing action of the pressing head 310 or moves outward under the elastic action of the elastic structure 400, the guide step surface 241 fits with the end surface of the connecting seat 330 facing each other for guiding and limiting, thereby guiding the reciprocating motion of the connecting seat 330 along the radial direction of the inner shell 200, and correspondingly improving the synchronization of the entire connecting seat 330 with the radial motion of the pressing head 310, and correspondingly ensuring that the connecting seat 330 drives the locking head 320 to move synchronously with the pressing head 310, reducing the displacement of the connecting seat 330 during the motion process, resulting in the occurrence of the jamming or even the jamming of the pressing head 310 or the locking head 320, and thus ensuring the normal operation of the locking member 300.

[0039] Specifically, in this embodiment, Figure 3 and Figure 5 As shown, the elastic structure 400 includes two elastic members 410, and the two elastic members 410 are arranged at intervals along the length direction of the inner shell 200. The pressing head 310 and the locking head 320 are arranged at intervals along the length direction of the inner shell 200, and the two elastic members 410 of the elastic structure 400 are arranged at intervals along the length direction of the inner shell 200 to improve the balance of the elastic force of the elastic members 410 on each area of the connecting seat 330 in the length direction, reduce the imbalance of the elastic force on each area of the connecting seat 330, and cause the local deflection of the connecting seat 330, so that the pressing head 310 or the locking head 320 is tilted and stuck or even stuck with the corresponding guide hole 221 or the plug hole 231, thereby ensuring the normal operation of the locking member 300.

[0040] Regarding the arrangement of the two elastic members 410 in the length direction of the connecting seat 330 , in this embodiment, the following form can be specifically adopted: along the length direction of the inner shell 200 , the pressing head 310 is located between the two elastic members 410 . The pressing head 310 and the locking head 320 are located on the side of the connecting seat 330 facing the guide hole 221 and the plug hole 231, and each elastic member 410 is located on the side of the connecting seat 330 away from the guide hole 221 and the plug hole 231. When the pressing head 310 presses the connecting seat 330 inward, the elastic members 410 located on both sides of the pressing head 310 are subjected to a more balanced pressing force. Accordingly, the connecting seat 330 has a higher stability in the inward translation with the pressing head 310, and the degree of local tilt deviation is smaller, thereby ensuring the synchronization of the locking head 320 moving with the pressing head 310, ensuring the smooth movement of the pressing head 310 relative to the guide hole 221 and the smooth movement of the locking head 320 relative to the plug hole 231, and further ensuring the normal use of the locking member 300.

[0041] Preferably, along the length direction of the inner shell 200, the distances between the two elastic members 410 and the pressing head 310 are equal, that is, the pressing head 310 is located at the middle position between the two elastic members 410.

[0042] In this embodiment, as Figure 2 and Figure 3 shown, there are two guiding holes 221, and the two guiding holes 221 are located on the radially opposite sides of the external section 220. The insertion holes 231, the locking holes 110 and the locking members 300 corresponding to the guiding holes 221 are all two; the accommodating cavity 210 is provided with a support 250, and the elastic structures 400 are in two groups. One group of elastic structures 400 is connected between one connecting seat 330 and the support 250, and the other group of elastic structures 400 is connected between the other connecting seat 330 and the support 250. The support 250 is located at the middle position of the accommodating cavity 210 in the radial direction. Among them, the elastic structure 400, the locking member 300, the guiding hole 221, the insertion hole 231 and the locking hole 110 that are connected and cooperate with each other on the same side of the support 250 form a disassembly and assembly mechanism. Then, the laser treatment handpiece of this embodiment is provided with two disassembly and assembly mechanisms, and the two disassembly and assembly mechanisms are symmetrically arranged on both sides of the support 250 along the radial direction of the inner shell 200; during use, the two opposite pressing heads 310 can be pressed simultaneously to realize the disassembly and assembly of the outer cylinder 100 and the inner shell 200 without adding extra operations. When the outer cylinder 100 is assembled to the inner shell 200, the two locking heads 320 can connect and fix the outer cylinder 100 and the inner shell 200 on the radially opposite sides, thereby improving the stability and firmness of the connection between the outer cylinder 100 and the inner shell 200 and ensuring the stable use of the laser treatment handpiece.

[0043] Specifically, in this embodiment, as Figure 3 and Figure 5 shown, the connecting seat 330 is provided with a first limiting groove 331, and one end of the elastic member 410 facing the connecting seat 330 is inserted into the first limiting groove 331. The first limiting groove 331 can position the position of the elastic member 410 connected to the connecting seat 330, and at the same time can also fix and limit the elastic member 410, thereby improving the convenience and stability of assembling the elastic member 410 to the connecting seat 330.

[0044] Similarly, the support 250 is provided with a second limiting groove 251, and one end of the elastic member 410 facing the support 250 is inserted into the second limiting groove 251. The second limiting groove 251 can position the position of the elastic member 410 connected to the support 250, and at the same time can also fix and limit the elastic member 410, thereby improving the convenience and stability of assembling the elastic member 410 to the support 250. Then, the settings of the first limiting groove 331 and the second limiting groove 251 can improve the convenience and stability of the connection between the elastic member 410 and the connecting seat 330 and the support 250, and ensure the application of the elastic force of the elastic member 410 on the connecting seat 330.

[0045] Specifically, the elastic member 410 can be a spring. Preferably, it is a conical spring. Among them, the flared end of the conical spring is inserted into the second limiting groove 251 to be connected to the support 250, and the constricted end is inserted into the first limiting groove 331 to be connected to the connecting seat 330. On the basis of ensuring that the conical spring exerts an elastic force on the connecting seat 330, the stability of the connecting seat 330 moving towards the support 250 by compressing the conical spring or the conical spring restoring to push the connecting seat 330 away from the support 250 is improved.

[0046] In this embodiment, as Figure 3 shown, the support 250 is provided with a channel 252 for the optical fiber to pass through, and the channel 252 communicates with the optical channel. The optical element 270 inside the inner shell 200 includes an optical fiber for transmitting the treatment laser. A channel 252 is provided at the middle position of the support 250 located in the middle of the accommodating cavity 210, and the channel 252 extends through along the length direction of the inner shell 200. Then, the optical fiber can pass through the support 250 in a straight line through the channel 252 to emit the treatment laser to the treatment head, without having to completely bypass the support 250, etc., thereby improving the convenience of the optical fiber arrangement and shortening the consumption of the optical fiber length.

[0047] Optionally, in this embodiment, as Figure 3 shown, the external section 220 protrudes outward relative to the inserted section 230 to form an annular step 260. The end face of the outer cylinder 100 facing the external section 220 abuts against the annular step surface 261 of the annular step 260, and the outer side wall of the outer cylinder 100 and the outer side wall of the external section 220 are coplanar. On the one hand, when the inner shell 200 and the outer cylinder 100 are inserted and assembled, the locking head 320 is retracted into the insertion hole 231 by pressing the pressing head 310, and the inserted section 230 and the outer cylinder 100 are inserted into each other. When the annular end face 140 of the insertion port 120 of the outer cylinder 100 abuts against the annular step surface 261 of the annular step 260, the inserted section 230 and the outer cylinder 100 cannot continue to be inserted into each other. At this time, the external section and the outer cylinder 100 are inserted in place; release the pressing head 310 and rotate the outer cylinder 100 circumferentially. When the locking hole 110 and the insertion hole 231 are corresponding inside and outside, the locking head 320 extends outward under the elastic force of the elastic structure 400 and is inserted into the locking hole 110, thereby realizing the assembly of the inner shell 200 and the outer cylinder 100, and the assembly convenience is higher; on the other hand, after the inner shell 200 and the outer cylinder 100 are assembled, the outer side wall of the outer cylinder 100 and the outer side wall of the external section 220 are coplanar, so the outer side walls of the two form the outer side wall of the handpiece approximately as a whole, with a regular shape, and both the operator's hand holding and visual comfort are relatively high.

[0048] Preferably, the length that the locking head 320 extends outwards from the insertion hole 231 is equal to the hole depth of the locking hole 110. When the inner shell 200 is assembled to the outer cylinder 100, the locking head 320 is inserted into the locking hole 110 and the outer end of the locking head 320 is approximately coplanar with the outer port of the locking hole 110, thereby ensuring the insertion length and locking firmness of the locking head 320 and the locking hole 110, and improving the overall neatness of the outer side wall of the handpiece.

[0049] Specifically, as Figure 5 shown, the end of the locking head 320 away from the connecting seat 330 is a reduced-diameter guiding cone 321 to facilitate the insertion fit between the locking head 320 and the locking hole 110.

[0050] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A laser treatment handpiece, characterized in that, It includes an outer cylinder (100) and an inner shell (200) with an accommodation cavity (210) provided inside. Both ends of the outer cylinder (100) are open, and its cylinder side wall is provided with locking holes (110); the inner shell (200) includes an outer section (220) with a side wall provided with guiding holes (221) and an inner insertion section (230) with a side wall provided with insertion holes (231) and a first outlet at the insertion end along its length direction. The inner insertion section (230) is fitted and inserted into the outer cylinder (100), and the insertion holes (231) correspond to the locking holes (110). A locking member (300) is provided in the accommodation cavity (210). The locking member (300) includes a pressing head (310) inserted into the guiding holes (221) and extending outwards, a locking head (320) inserted into the insertion holes (231) and the locking holes (110), and a connecting seat (330) connected between the pressing head (310) and the locking head (320). The connecting seat (330) is connected to the inner shell (200) through an elastic structure (400).

2. The laser treatment handpiece according to claim 1, wherein, The length of the inner insertion section (230) is more than three times the length of the outer section (220). A guiding step (240) is provided in the accommodation cavity (210). The guiding step surface (241) of the guiding step (240) is parallel to the radial cross-section of the inner shell (200). One end end surface of the connecting seat (330) is fitted and abutted against the guiding step surface (241).

3. The laser treatment handpiece according to claim 1 or 2, characterized in that, The elastic structure (400) includes two elastic members (410). The two elastic members (410) are arranged at intervals along the length direction of the inner shell (200).

4. The laser treatment handpiece according to claim 3, wherein, Along the length direction of the inner shell (200), the pressing head (310) is located between the two elastic members (410).

5. The laser treatment handpiece according to claim 1 or 2, characterized in that, There are two guiding holes (221). The two guiding holes (221) are located on the two radially opposite sides of the outer section (220). The insertion holes (231), the locking holes (110) and the locking member (300) corresponding to the guiding holes (221) are all two; the accommodation cavity (210) is provided with a support (250). The elastic structure (400) is in two groups. One group of the elastic structure (400) is connected between one connecting seat (330) and the support (250), and the other group of the elastic structure (400) is connected between the other connecting seat (330) and the support (250).

6. The laser treatment handpiece according to claim 5, wherein, The elastic structure (400) includes an elastic member (410); the connecting seat (330) is provided with a first limiting groove (331). One end of the elastic member (410) facing the connecting seat (330) is inserted into the first limiting groove (331). And / or, the support (250) is provided with a second limiting groove (251). One end of the elastic member (410) facing the support (250) is inserted into the second limiting groove (251).

7. The laser treatment handpiece according to claim 6, characterized in that, The elastic member (410) is a conical spring, and the constricted end of the conical spring is inserted into the first limiting groove (331) to be connected to the connection base (330); and / or, the flared end of the conical spring is inserted into the second limiting groove (251) to be connected to the support base (250).

8. The laser treatment handpiece according to claim 6, wherein The support base (250) is provided with a channel (252) for an optical fiber to pass through.

9. The laser treatment handpiece according to claim 1 or 2, characterized in that, The external section (220) protrudes outward relative to the inserted section (230) to form an annular step (260). The end face of the outer cylinder (100) facing the external section (220) abuts against the annular step surface (261) of the annular step (260), and the outer side wall of the outer cylinder (100) is coplanar with the outer side wall of the external section (220).

10. A laser treatment device, characterized in that, It includes a laser and the laser treatment handpiece according to any one of claims 1-9, and the laser treatment handpiece is connected to the laser.

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