Hand tool and laser therapeutic instrument

Abstract

The utility model discloses a hand tool and a laser therapeutic instrument, relates to medical instrument technical field, the hand tool comprises a lens cone assembly and a telescoping assembly, the lens cone assembly is provided with a lens, the outer wall of the lens cone assembly is provided with a connecting surface, the connecting surface is vertical to the axial direction of the lens cone assembly, the connecting surface is provided with a plurality of jacks, and the jacks are connected with the lens cone assembly. The hole depths of the multiple insertion holes in the axial direction of the lens barrel assembly are different, a treatment face is arranged at one end of the telescopic assembly, the outer wall of the lens barrel assembly is movably sleeved with the other end of the telescopic assembly, a connecting piece is arranged at the end, close to the connecting face, of the telescopic assembly, and the connecting piece is matched with the insertion holes in an inserted mode; wherein the telescopic assembly rotates relative to the lens barrel assembly, and the telescopic assembly moves in the axial direction of the lens barrel assembly, so that the connecting piece is inserted into the insertion holes with different hole depths, and the distance between the lens and a treatment surface is adjusted. According to the technical scheme provided by the utility model, the problem that the coaxiality between the lens and the laser is easily influenced by the focusing mode of the hand tool of the existing laser therapeutic instrument is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field, especially hand tool and laser therapeutic instrument. BACKGROUND

[0002] The laser therapeutic instrument is an instrument for laser treatment. During laser treatment, the output of laser needs to be transmitted to the diseased tissue through the hand tool to achieve the purpose of treatment. The spot size and energy density used in the treatment of different diseased tissues are different. Therefore, the spot size and energy density output by the hand tool need to be adjustable.

[0003] In the related art, the size of the spot is adjusted by rotating the telescopic structure, specifically, the hand tool comprises a fixed cylinder and a moving cylinder, a lens is installed on the moving cylinder, the fixed cylinder and the moving cylinder are connected through thread connection, the lens moves up and down with the moving cylinder, and zooming is performed. However, in this way, the moving part (the moving cylinder) is easy to wear, which affects the coaxiality between the lens and the laser, and affects the treatment effect. UTILITY MODEL CONTENT

[0004] The main purpose of the utility model is to provide a hand tool and a laser therapeutic instrument, which aims to solve the problem that the focusing mode of the hand tool of the existing laser therapeutic instrument easily affects the coaxiality between the lens and the laser.

[0005] To achieve the above-mentioned purpose, the utility model provides a hand tool, which comprises: a lens barrel assembly, a lens is installed on the lens barrel assembly, an outer wall of the lens barrel assembly is provided with a connecting surface, the connecting surface is perpendicular to the axial direction of the lens barrel assembly, the connecting surface is provided with a plurality of insertion holes, the depths of the plurality of insertion holes along the axial direction of the lens barrel assembly are different; and a telescopic assembly, one end of the telescopic assembly is provided with a treatment surface, the other end of the telescopic assembly is movably sleeved on the outer wall of the lens barrel assembly, one end of the telescopic assembly close to the connecting surface is provided with a connecting piece, and the connecting piece is inserted into the insertion hole in a matched mode; wherein the telescopic assembly rotates relative to the lens barrel assembly, the telescopic assembly moves along the axial direction of the lens barrel assembly, the connecting piece is inserted into the insertion hole with different depths, and the distance between the lens and the treatment surface is adjusted.

[0006] In an embodiment, the plurality of insertion holes are arranged at intervals on the connecting surface and are arranged in a circumferential direction around the lens barrel assembly, and the depths of the plurality of insertion holes along the axial direction of the lens barrel assembly gradually increase along the circumferential direction of the lens barrel assembly.

[0007] In an embodiment, the plurality of insertion holes comprises a plurality of groups of insertion holes arranged circumferentially around the lens barrel assembly and spaced apart from the connecting surface, each group of insertion holes comprising a plurality of insertion holes having the same depth along the axial direction of the lens barrel assembly; the connecting member comprises a plurality of pins having the same length along the axial direction of the telescopic assembly, and the plurality of pins correspond one-to-one to the plurality of insertion holes of each group of insertion holes.

[0008] In an embodiment, the connecting surface is provided with a groove arranged circumferentially around the lens barrel assembly, and the groove is provided with a plurality of insertion holes on the bottom surface; the connecting member comprises a top bead in abutting engagement with the insertion holes.

[0009] In an embodiment, the lens barrel assembly comprises a lens barrel and a sleeve ring, the lens is mounted in the lens barrel, the other end of the telescopic assembly is movably sleeved on the outer wall of the lens barrel, the sleeve ring is fixedly connected to the outer wall of the lens barrel away from the lens, and the outer wall of the sleeve ring is provided with the connecting surface.

[0010] In an embodiment, the sleeve ring is provided with an opening on the side wall, the telescopic assembly is provided with a gear position identification strip, the gear position identification strip is aligned with the connecting member along the axial direction of the telescopic assembly; when the gear position identification strip is exposed to the opening, the connecting member is aligned with the insertion holes along the axial direction of the lens barrel assembly.

[0011] In an embodiment, the telescopic assembly comprises a telescopic tube and a treatment head, the treatment head is connected to one end of the telescopic tube, the treatment head is provided with the treatment surface, and the end surface of the telescopic tube away from the treatment head forms a butt joint surface, and the butt joint surface is provided with the connecting member.

[0012] In an embodiment, the hand tool further comprises a resilient member arranged between the lens barrel assembly and the telescopic assembly.

[0013] In an embodiment, the hand tool further comprises a fixing cylinder arranged on the outer wall of the lens barrel assembly and located at one end of the lens barrel assembly close to the lens, the fixing cylinder is located between the lens barrel assembly and the telescopic assembly, and the resilient member is abutted between the end surface of the fixing cylinder and the wall surface of the telescopic assembly.

[0014] The utility model also provides a kind of laser therapeutic instrument, including laser as above-mentioned hand tool, and the laser and the hand tool are connected by light guide arm or optical fiber.

[0015] Compared with the prior art, the hand tool and the laser therapeutic instrument provided by the utility model have the following beneficial effects:

[0016] The utility model discloses technical scheme through the telescopic component sleeve setting in the lens barrel assembly outside, and setting the connecting piece and the jack plug cooperation between both, when needing to change the spot size, through the telescopic component relative lens barrel assembly rotation, moves along the axial direction of lens barrel assembly again, through the connecting piece selection different jack plug connection, and the depth of different jacks is not same, thereby realizing driving the treatment surface relative lens along the axial direction of lens barrel assembly movement, adjusts the distance between lens and treatment surface, and the output different spot size and energy density, and this mode structure is simple, and the adjustment is convenient, and the friction between the moving parts has been reduced, and the telescopic component or the wall of lens barrel assembly is not easy to cause abrasion, reduces the abrasion risk caused by long -term use, can guarantee the coaxiality between lens and laser beam, maintains the stability and consistency of laser output, ensures the treatment effect. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, below will be to the embodiment or prior art description needed to use the drawing briefly introduced, obviously, the drawing in the following description only some embodiments of the utility model, for ordinary skilled person in the art comes, under the premise of not paying creative labor, can also obtain other drawings according to the structure shown in these drawings.

[0018] Figure 1 It is the sectional view of the hand tool embodiment of the utility model;

[0019] Figure 2 It is the sectional view of the telescopic component embodiment of the utility model;

[0020] Figure 3 It is the front view of the sleeve ring embodiment of the utility model;

[0021] Figure 4 It is the front view of the sleeve ring another embodiment of the utility model;

[0022] Figure 5 It is the structure schematic drawing of the hand tool embodiment of the utility model;

[0023] Figure 6 It is the plug-in state schematic drawing of the hand tool first embodiment of the utility model;

[0024] Figure 7 It is the plug-in state schematic drawing of the hand tool second embodiment of the utility model;

[0025] Figure 8 It is the plug-in state schematic drawing of the hand tool third embodiment of the utility model.

[0026] EXPLANATION OF DRAWINGS:

[0027] 100, hand tool; 10, lens barrel assembly; 11, lens; 12, lens barrel; 13, collar; 131, connecting surface; 132, opening; 141, insertion hole; 142, first insertion hole; 143, second insertion hole; 144, third insertion hole; 20, telescopic assembly; 21, telescopic tube; 211, abutting surface; 212, gear identification strip; 22, treatment head; 221, treatment surface; 23, connecting piece; 231, latch; 30, elastic member; 40, fixed barrel.

[0028] The realization, functional features and advantages of the utility model will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0030] It should be noted that all the directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the utility model are only used to explain the relative position relationship, movement condition, etc. between the components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications will also change accordingly.

[0031] In addition, the description of "first", "second" and the like in the utility model is only for the purpose of description, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one feature. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.

[0032] Please refer to Figures 1 to 8The utility model provides a hand tool 100, the hand tool 100 includes: lens barrel assembly 10, install lens 11 on the lens barrel assembly 10, the outer wall of lens barrel assembly 10 is equipped with connecting surface 131, connecting surface 131 is perpendicular to the axial direction of lens barrel assembly 10, connecting surface 131 is equipped with a plurality of jack 141, a plurality of jack 141 along the hole depth of axial direction of lens barrel assembly 10 is not identical, and telescopic component 20, one end of telescopic component 20 is equipped with treatment surface 221, the other end of telescopic component 20 is movably sleeved in the outer wall of lens barrel assembly 10, one end of telescopic component 20 close connecting surface 131 is equipped with connecting piece 23, and connecting piece 23 is inserted with jack 141 and cooperates, wherein, telescopic component 20 rotates relative to lens barrel assembly 10, telescopic component 20 moves along the axial direction of lens barrel assembly 10, makes connecting piece 23 insert in different jack 141, to adjust the distance between lens 11 and treatment surface 221.

[0033] Specifically, hand tool 100 includes lens barrel assembly 10 and telescopic component 20, lens barrel assembly 10 is used to install lens 11, and guides and focuses laser beam to treatment surface 221, telescopic component 20 is used to rotate relative to lens barrel assembly 10 and moves along the axial direction, makes connecting piece insert in jack 141 of different hole depth, to adjust the distance between lens 11 and treatment surface 221, and exports different spot size and energy density.

[0034] As Figure 1 And Figure 3 Connecting surface 131 is arranged on lens barrel assembly 10, and connecting surface 131 is arranged perpendicularly to the axial direction of lens barrel assembly 10, and jack 141 is arranged on connecting surface 131, to facilitate the connecting of connecting piece 23 of telescopic component 20. The both ends of telescopic component 20 are provided with treatment surface 221 and connecting piece 23 respectively, and connecting piece 23 is arranged close to connecting surface 131, to facilitate the connecting of first connecting part 14. Telescopic component 20 is a moving part, and lens barrel assembly 10 is a fixed part.

[0035] When telescopic component 20 is pulled out from lens barrel assembly 10, telescopic component 20 can rotate around lens barrel assembly 10, and when connecting piece 23 is inserted into jack 141, the position between telescopic component 20 and lens barrel assembly 10 is fixed. Connecting piece 23 can be provided as connecting shaft, connecting block or top pearl, etc.

[0036] In use, when the telescopic assembly 20 is rotated, the connecting piece 23 can be inserted into the insertion hole 141 when the connecting piece 23 is aligned with the insertion hole 141, and since the depths of the different insertion holes 141 on the lens barrel assembly 10 are different, the insertion depth of the connecting piece 23 is different, so that when the connecting piece 23 on the telescopic assembly 20 is inserted into the insertion hole 141 with different depths, the distance between the treatment surface 221 of the treatment head 22 and the lens 11 can be changed. The number of insertion holes 141 on the lens barrel assembly 10 can be increased or decreased according to requirements to achieve adjustment of multiple distances.

[0037] Since the lens 11 is fixedly installed on the lens barrel assembly 10 and no longer moves up and down with the moving barrel, wear is reduced, and the coaxiality of the lens 11 and the laser beam is ensured, which helps to maintain the stability and consistency of the laser output and ensures the treatment effect.

[0038] The number of insertion holes 141 can be two, three, four or more, and the plurality of insertion holes 141 are arranged circumferentially along the lens barrel assembly 10, and at least two insertion holes 141 have different hole depths in the axial direction, so that the distance between the lens 11 and the treatment surface 221 can be selected according to different insertion holes 141, and the spot size and energy density can be accurately adjusted to adapt to different treatment requirements. When it is necessary to adjust the spot size, the connecting piece 23 is only pulled out of the current insertion hole 141, and then the telescopic assembly 20 is rotated to another target insertion hole 141 position and inserted, which is simple and intuitive and reduces the complex operation steps.

[0039] The plug-in connection of the connecting piece 23 and the insertion hole 141 allows quick and accurate position locking, the spot size is changed by adjusting the distance between the lens 11 and the treatment surface 221, the structure is simple, and the lens 11 is not affected, and the coaxiality between the lens 11 and the laser is ensured.

[0040] The telescopic assembly 20 is sleeved on the lens barrel assembly 10, and the connecting piece 23 and the insertion hole 141 are plug-in connected therebetween, when it is necessary to change the spot size, the telescopic assembly 20 is rotated relative to the lens barrel assembly 10, and then moved along the axial direction of the lens barrel assembly 10, different insertion holes 141 are selected and plug-in connected through the connecting piece 23, the depths of the different insertion holes 141 are different, so that the treatment surface 221 is driven to move along the axial direction of the lens barrel assembly 10 relative to the lens 11, the distance between the lens 11 and the treatment surface 221 is adjusted, and different spot sizes and energy densities are outputted, which is simple in structure, convenient to adjust, reduces the friction between the moving parts, is not easy to cause wear on the wall surface of the telescopic assembly 20 or the lens barrel assembly 10, reduces the wear risk caused by long-term use, can ensure the coaxiality between the lens 11 and the laser beam, maintain the stability and consistency of the laser output, and ensure the treatment effect.

[0041] In the embodiment of the utility model, multiple jack holes 141 are arranged at intervals on the connecting surface 131 and are arranged circumferentially around the lens barrel assembly 10, and the depth of the multiple jack holes 141 along the axial direction of the lens barrel assembly 10 gradually increases along the circumferential direction of the lens barrel assembly 10.

[0042] In detail, in an embodiment, the depths of the multiple jack holes 141 gradually increase, that is, the multiple jack holes 141 have adjacent first holes and last holes, the depths of the multiple jack holes 141 gradually increase from the first holes to the last holes, and the length of the connecting piece 23 is greater than or equal to the hole depth of the deepest jack hole 141. The jack holes 141 of different depths correspond to different distances between the different lenses 11 and the treatment surface 221, that is, different spot sizes and energy densities, and in this way, fine spot size and energy density adjustment can be achieved, the most suitable jack hole 141 can be selected according to specific treatment requirements, and the consistency and accuracy of treatment parameters each time can be ensured.

[0043] In the embodiment of the utility model, the multiple jack holes 141 include multiple groups of jack holes 141 arranged at intervals on the connecting surface 131 and arranged circumferentially around the lens barrel assembly 10, each group of jack holes 141 includes multiple jack holes 141 having the same hole depth along the axial direction of the lens barrel assembly 10, the connecting piece 23 includes multiple pins 231, the lengths of the multiple pins 231 along the axial direction of the telescopic assembly 20 are the same, and the multiple pins 231 correspond one-to-one to the multiple jack holes 141 of each group of jack holes 141.

[0044] In a specific embodiment, the multiple jack holes 141 include two first jack holes 142, two second jack holes 143, and two third jack holes 144 arranged along the lens barrel assembly 10, the two first jack holes 142 have the same hole depth along the axial direction of the lens barrel assembly 10, the two second jack holes 143 have the same hole depth along the axial direction of the lens barrel assembly 10, the two third jack holes 144 have the same hole depth along the axial direction of the lens barrel assembly 10, the hole depths of the first jack holes 142, the second jack holes 143, and the third jack holes 144 along the axial direction of the lens barrel assembly 10 are different, the connecting piece 23 includes two pins 231, and the lengths of the two pins 231 along the axial direction of the telescopic assembly 20 are the same. The two pins 231 can be inserted into the two first jack holes 142 simultaneously, or can be inserted into the two second jack holes 143 simultaneously, or can be inserted into the two third jack holes 144 simultaneously.

[0045] It should be noted that multiple is not a specific number, but refers to a number greater than or equal to two, and can represent different numbers in different sentences. For example, the above multiple jacks are a total of 6 jacks; and the above each group of jacks 141 includes multiple jacks 141 with the same hole depth in the axial direction of the lens barrel assembly 10.

[0046] Specifically, in yet another embodiment, as Figures 6 to 8 , two plugs 231 are provided, and two jacks 141 are provided to cooperate, the two jacks 141 are provided with three groups, that is, two first jacks 142, two second jacks 143, and two third jacks 144, and the three groups of jacks 141 correspond to three focal lengths, respectively, and the hole depths of the different groups of jacks 141 in the axial direction are different, allowing the adjustment of multiple levels of spot size and energy density to meet the use requirements; since each plug 231 is inserted into a corresponding jack 141, the symmetrical design provides higher structural stability, so that the telescopic assembly 20 is not easy to rotate or deviate, and the most suitable combination of jacks 141 can be selected according to the specific treatment requirements, thereby realizing a wider adjustment range, and the symmetrical design also disperses the mechanical stress and reduces the pressure on the single contact point. In some embodiments, when the number of jacks 141 with the same depth is 3 or more and is uniformly arranged on the connecting surface, the plug 231 is also provided with corresponding 3 or more to correspond to the jack 141 at the same time. In some embodiments, the number of plugs 231 can also be less than the number of jacks 141 of a corresponding group of jacks 141; for example, a group of jacks 141 includes 3 jacks 141, and the number of plugs 231 is 2, and 2 plugs 231 can be inserted into any 2 of the 3 jacks 141 to realize the scheme of the present application.

[0047] In use, as Figures 6 to 8 When each group of plugs 231 is inserted into different groups of jacks 141, the distance between the different lenses 11 and the treatment surface 221 can be correspondingly adjusted.

[0048] In the embodiments of the present application, the connecting surface 131 is provided with a groove (not shown in the figure), the groove is arranged on the connecting surface 131 in the circumferential direction of the lens barrel assembly 10, and the bottom surface of the groove is provided with a plurality of jacks 141; the connecting piece includes a top bead (not shown in the figure), and the top bead is in abutting cooperation with the jack.

[0049] In detail, the connecting surface 131 is provided with a groove, and the jack 141 is arranged in the groove, so that the top bead can slide in the groove and extend into the corresponding jack 141, and different jacks correspond to different depths, so that the top bead presents different heights in different jacks.

[0050] When the telescopic assembly 20 rotates, the top bead moves smoothly along the groove bottom surface until the required jack 141 is found and partially extends into it, completing the distance adjustment between the lens 11 and the treatment surface 221. This matching mode can make the entire adjustment process more stable. The abutting matching of the top bead and the jack 141 ensures the stable connection of the telescopic assembly 20 in the locked state, and when adjustment is required, the telescopic assembly 20 can be pulled out. When the top bead is embedded in the clamping groove, an obvious tactile or sound feedback will be generated, informing that the preset position has been reached, improving the safety and efficiency of the operation.

[0051] In the embodiment of the utility model, the lens barrel assembly 10 includes a lens barrel 12 and a sleeve ring 13, the lens 11 is installed in the lens barrel 12, the other end of the telescopic assembly 20 is movably sleeved on the outer wall of the lens barrel 12, the sleeve ring 13 is fixedly connected to the outer wall of the lens barrel 12 away from the lens 11, and the outer wall of the sleeve ring 13 is provided with the connecting surface 131.

[0052] Specifically, the sleeve ring 13 is fixed on the outer side of the lens barrel 12, which can play a protective role and prevent external impact or collision from directly acting on the lens barrel 12, thereby increasing the overall rigidity of the lens barrel assembly 10. Meanwhile, the connecting surface 131 is arranged on the outer wall of the sleeve ring 13, which is convenient for machining on the sleeve ring 13 alone and is also conducive to maintaining the stable connection of the telescopic assembly 20 relative to the lens barrel assembly 10, reducing loosening or displacement caused by mechanical movement, and ensuring the coaxiality and consistency of the laser transmission path.

[0053] In the embodiment of the utility model, the side wall of the sleeve ring 13 is provided with an opening 132, the outer wall of the telescopic assembly 20 is provided with a gear position identification strip 212, the gear position identification strip 212 is aligned with the connecting piece 23 along the axial direction of the telescopic assembly 20, and when the gear position identification strip 212 is exposed to the opening 132, the connecting piece 23 is aligned with the jack 141 along the axial direction of the lens barrel assembly 10.

[0054] It is worth noting that, as Figure 5The gear identification strip 212 is arranged opposite the connecting piece 23 in the axial direction of the telescopic assembly 20 through the cooperation of the opening 132 and the gear identification strip 212, and when the gear is switched, the telescopic assembly 20 rotates relative to the lens barrel assembly 10, and the gear identification strip 212 also rotates, and when the gear identification strip 212 is seen from the opening 132, the connecting piece 23 is aligned with the insertion hole 141, so that the connecting piece 23 can be directly connected to the insertion hole 141, and the adjusted position is accurate. The number of gear identification strips 212 can be set according to the specific number of insertion holes 141, and each gear identification strip 212 corresponds to an insertion hole 141. The user can directly see the currently selected gear, providing clear and instant visual feedback to help the operator confirm whether the correct treatment parameter has been selected, which reduces the possibility of misoperation. The user only needs to observe the gear identification strip 212 at the opening 132 to know the current position, without the need for additional tools or complex checking steps, simplifying the adjustment and confirmation process and making the operation more convenient and efficient.

[0055] In the embodiment of the utility model, telescopic assembly 20 including telescopic pipe 21 and treatment head 22, treatment head 22 is connected to one end of telescopic pipe 21, the end face of the end of telescopic pipe 21 away from treatment head 22 forms butt joint surface 211, butt joint surface 211 is equipped with connecting piece 23.

[0056] Specifically, the treatment surface 221 is arranged on the treatment head 22 to treat the user, and the butt joint surface 211 is arranged on the telescopic pipe 21 to facilitate the cooperation with the connecting surface 131 of the lens barrel assembly 10, so that the connecting piece 23 is quickly and accurately assembled with the insertion hole 141, simplifying the assembly process and reducing the installation time and complexity. At the same time, it is also convenient to fine-tune the position of the treatment head 22 during use, ensuring the accuracy and consistency of each use, making the hand tool 100 more reliable and efficient, meeting the requirements of easy use, providing more accurate and easy-to-use equipment for users, and ensuring the best treatment effect.

[0057] In the embodiment of the utility model, the hand tool 100 further comprises an elastic member 30 arranged between the lens barrel assembly 10 and the telescopic assembly 20.

[0058] In detail, the elastic member 30 is also arranged, which can be a spring or an elastic air bag structure. In an embodiment, as shown in Figure 1 , the elastic member 30 is a spring, and when the operator uses it, the telescopic assembly 20 is pulled out from the lens barrel assembly 10, and after being loosened, the telescopic assembly 20 can be automatically reset by the elastic force of the spring. With the support of the spring elastic force, the telescopic assembly 20 will not be separated from the lens barrel assembly 10 under the action of gravity.

[0059] In the embodiment, as Figures 6 to 8 When the gear needs to be changed, the telescopic tube 21 is pulled to the bottom, at this time the plug 231 is also pulled out of the insertion hole 141 of the collar 13, the telescopic tube 21 can be rotated left and right, when rotated to the next gear, the gear mark strip 212 on the telescopic tube 21 is seen at the opening 132 on the collar 13, at this time the plug 231 is aligned with the insertion hole 141 of the collar 13, the telescopic tube 21 is loosened, and the telescopic tube 21 is bounced back under the action of the spring force, so that the plug 231 is automatically inserted into the insertion hole 141 of the collar 13, the gear is changed, the operation is facilitated, and the distance from the lens 11 to the treatment end face of the treatment head 22 is changed.

[0060] In addition, the spring force is designed as 2N-8N, the spring force is calculated and verified, the spring force is set as about 2N-8N, the telescopic tube 21 can be comfortably pulled and pushed back, and the ergonomics is met.

[0061] In the embodiment of the utility model, the hand tool 100 further includes a fixed cylinder 40, the fixed cylinder 40 is arranged on the outer wall of the lens barrel assembly 10 and is located at one end of the lens barrel assembly 10 close to the lens 11, the fixed cylinder 40 is located between the lens barrel assembly 10 and the telescopic assembly 20, and the elastic member 30 is abutted between the end face of the fixed cylinder 40 and the wall face of the telescopic assembly 20.

[0062] It is worth noting that, as Figure 1 The inner wall of the telescopic assembly 20 is provided with a stepped face, and the two ends of the elastic member 30 are abutted between the stepped face and the fixed cylinder 40. By arranging the fixed cylinder 40, the fixed cylinder 40 serves as a reference point, the installation position and force direction of the elastic member 30 can be determined, the elastic member 30 is directly abutted between the end face of the fixed cylinder 40 and the stepped face of the telescopic assembly 20, and a closed force transmission path is formed.

[0063] Meanwhile, the fixed cylinder 40 can also serve as a limiting device to limit the maximum stroke of the telescopic assembly 20 and prevent the telescopic assembly 20 from being excessively stretched. The end face of the fixed cylinder 40, the inner wall of the telescopic assembly 20 and the outer wall of the lens barrel assembly 10 cooperatively form a containing space, the elastic member 30 is arranged in the containing space, and the elastic member 30 is provided with a definite installation position, the assembly process is simplified, and it is ensured that the telescopic assembly 20 can be quickly and stably reset.

[0064] The utility model also provides a kind of laser therapy instrument (not shown in figure), including laser and as above-mentioned hand tool 100, and laser and hand tool are connected by light guide arm or optical fiber.

[0065] Specifically, the laser treatment instrument comprises a main machine (not shown in the figure) and a hand tool 100, a laser is arranged in the main machine, the laser of the laser is transmitted to the hand tool 100 through a light guide arm or an optical fiber, and the hand tool 100 changes the spot size by adjusting the distance between the lens 11 and the treatment surface 221; the structure is relatively simple, does not affect the coaxiality between the lens and the laser, and solves the problems of unstable coaxiality and mechanical wear of the traditional hand tool 100.

[0066] The specific structure of the hand tool 100 refers to the above-mentioned embodiments, since the laser treatment instrument adopts all the technical solutions of the above-mentioned embodiments, at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, and will not be repeated here.

[0067] The above-mentioned is only the preferred embodiment of the present application, and does not limit the patent range of the present application, and any equivalent structural transformation made by using the content of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection range of the present application.

Claims

1. A hand tool comprising: The hand tool comprises: a lens barrel assembly having a lens mounted thereon, an outer wall of the lens barrel assembly being provided with a connecting surface perpendicular to an axial direction of the lens barrel assembly, the connecting surface being provided with a plurality of insertion holes having different depths along the axial direction of the lens barrel assembly; and a telescopic assembly having a treatment surface at one end thereof, the other end of the telescopic assembly being movably sleeved on the outer wall of the lens barrel assembly, the one end of the telescopic assembly close to the connecting surface being provided with a connecting member, the connecting member being inserted into the insertion holes; wherein the telescopic assembly is rotated relative to the lens barrel assembly, the telescopic assembly is moved along the axial direction of the lens barrel assembly, and the connecting member is inserted into the insertion holes having different depths so as to adjust the distance between the lens and the treatment surface.

2. The hand tool of claim 1, wherein, The plurality of insertion holes are arranged at intervals on the connecting surface and circumferentially around the lens barrel assembly, and the depths of the plurality of insertion holes along the axial direction of the lens barrel assembly gradually increase along the circumferential direction of the lens barrel assembly.

3. The hand tool of claim 1, wherein, The plurality of insertion holes comprise a plurality of groups of insertion holes arranged at intervals on the connecting surface and circumferentially around the lens barrel assembly, each group of insertion holes comprising a plurality of insertion holes having the same depth along the axial direction of the lens barrel assembly. The connecting member comprises a plurality of insertion pins having the same length along the axial direction of the telescopic assembly, and the plurality of insertion pins correspond to the plurality of insertion holes of each group of insertion holes one by one.

4. The hand tool of claim 1, wherein, The connecting surface is provided with a groove circumferentially arranged on the connecting surface around the lens barrel assembly, and the bottom surface of the groove is provided with the plurality of insertion holes. The connecting member comprises a top bead in abutting engagement with the insertion holes.

5. The hand tool of any one of claims 1 to 4, wherein, The lens barrel assembly comprises a lens barrel and a sleeve ring, the lens is mounted in the lens barrel, the other end of the telescopic assembly is movably sleeved on the outer wall of the lens barrel, the sleeve ring is fixedly connected to the outer wall of the lens barrel away from the lens, and the outer wall of the sleeve ring is provided with the connecting surface.

6. The hand tool of claim 5, wherein, The side wall of the sleeve ring is provided with an opening, the outer wall of the telescopic assembly is provided with a gear position identification strip, and the gear position identification strip is aligned with the connecting member along the axial direction of the telescopic assembly. When the gear position identification strip is exposed to the opening, the connecting member is aligned with the insertion holes along the axial direction of the lens barrel assembly.

7. The hand tool of any one of claims 1 to 4, wherein, The telescopic assembly comprises a telescopic tube and a treatment head, the treatment head is connected to one end of the telescopic tube, the treatment head is provided with the treatment surface, the end surface of the other end of the telescopic tube away from the treatment head forms an abutting surface, and the abutting surface is provided with the connecting member.

8. The hand tool of any one of claims 1 to 4, wherein, The hand tool further comprises a resilient member arranged between the lens barrel assembly and the telescopic assembly.

9. The hand tool of claim 8, wherein, The hand tool further comprises a fixing barrel arranged on the outer wall of the lens barrel assembly and located at one end of the lens barrel assembly close to the lens, the fixing barrel is located between the lens barrel assembly and the telescopic assembly, and the resilient member is abutted between the end surface of the fixing barrel and the wall surface of the telescopic assembly.

10. A laser therapy apparatus, characterized by, The hand tool comprises a laser and a hand tool as claimed in any one of claims 1 to 9, and the laser and the hand tool are connected by a light guide arm or an optical fiber.

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