Therapeutic hand implement and therapeutic device

Abstract

The utility model discloses a kind of treatment hand tools and therapeutic apparatus, it is related to medical instrument technical field, wherein, the treatment hand tool includes lens barrel assembly, sleeve assembly and lens assembly;Lens barrel assembly includes lens barrel and at least two positioning parts, at least two positioning parts are located in lens barrel, and light cavity is formed in the inside of lens barrel;Sleeve assembly includes sleeve and at least two cooperation parts, sleeve is rotatably sleeved in the outer periphery of lens barrel, and at least two cooperation parts are located in sleeve;Lens assembly includes fixed lens and movable lens, fixed lens is installed in lens barrel, movable lens is movably located in light cavity, and is connected with sleeve;Wherein, rotate sleeve, drive at least two cooperation parts to limit cooperation with at least two positioning parts in turn alternately, and drive movable lens to move along the axial direction of lens barrel.The utility model realizes more fixed gear by the limiting structure of positioning part and limiting part, and each gear corresponds to the determined light spot parameter, improves treatment effect.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a treatment hand and treatment instrument. Background Technology

[0002] Laser therapy is widely used in many medical fields due to its precision and efficiency. Its core technology lies in the laser energy output from the handpiece's output end acting on the treatment area to achieve the therapeutic goal. Energy density affects the treatment effect. Currently, energy density control is mainly achieved by adjusting the laser's output energy or changing the spot size. Spot size adjustment is often done by adjusting the distance between two lenses; typically, one lens is fixed while the other is moved to adjust the distance between the two lenses.

[0003] However, existing methods for adjusting the distance between the two lenses to change the spot size have a limited range of adjustable settings. This makes it difficult to select spot sizes suitable for treating lesions of different sizes during actual treatment, thus affecting the treatment outcome. Utility Model Content

[0004] The main purpose of this invention is to propose a therapeutic handpiece that addresses the problem of limited adjustable spot size settings in existing therapeutic handpieces.

[0005] To achieve the above objectives, the present invention provides a therapeutic handpiece, which includes:

[0006] A lens barrel assembly, the lens barrel assembly including a lens barrel and at least two positioning parts, the at least two positioning parts being disposed in the lens barrel, and an optical cavity being formed inside the lens barrel;

[0007] A sleeve assembly, the sleeve assembly including a sleeve and at least two mating parts, the sleeve being rotatably fitted onto the outer periphery of the lens barrel, and at least two of the mating parts being disposed on the sleeve;

[0008] A lens assembly, comprising a fixed lens and a movable lens, wherein the fixed lens is installed inside the lens barrel, and the movable lens is movably disposed in the optical cavity and connected to the sleeve;

[0009] Rotating the sleeve causes at least two of the mating parts to alternately engage with at least two of the positioning parts, thereby driving the movable lens to move along the axial direction of the lens barrel.

[0010] In one embodiment of this utility model, the positioning part is a positioning groove, and the mating part is a limiting block.

[0011] In one embodiment of the present invention, the lens barrel assembly further includes a fixing ring, which is sleeved on one end of the lens barrel, and the positioning groove is formed on the end face of the fixing ring;

[0012] The sleeve assembly further includes a rotating ring, which is disposed inside the sleeve and rotatably fitted onto one end of the lens barrel, and the limiting block is disposed on the rotating ring.

[0013] In one embodiment of this utility model, there are multiple positioning grooves, which are arranged at intervals along the circumference of the two concentric circles of the fixed ring, and form two positioning groove groups respectively. The lines connecting any two adjacent positioning grooves to the center of the concentric circles are not collinear.

[0014] Two limiting blocks are provided, and each limiting block corresponds to one of the positioning groove groups;

[0015] Rotating the sleeve causes the two limiting blocks to alternately be positioned within one of the corresponding positioning slots of the positioning slot group.

[0016] In one embodiment of the present invention, the sleeve assembly further includes an elastic element, the moving ring is provided with an installation groove, one end of the elastic element is embedded in the installation groove, and the other end is connected to the limiting block, thereby driving the limiting block to engage with the positioning groove.

[0017] In one embodiment of the present invention, a first stop block is provided on the side of the moving ring facing the lens barrel, and a second stop block is provided on the outer periphery of the lens barrel. The first stop block and the second stop block are in limiting contact to restrict the sleeve from rotating relative to the lens barrel within a first angular range.

[0018] In one embodiment of the present invention, the sleeve assembly further includes a rotating ring, which is disposed inside the sleeve and rotatably sleeved on one end of the lens barrel;

[0019] The positioning groove is formed on the peripheral side of the lens barrel, and the limiting block is connected to the inner side of the moving ring facing the lens barrel.

[0020] In one embodiment of this utility model, the lens barrel is provided with a spiral groove, and the lens assembly further includes a connector, one end of which is connected to the movable lens, and the other end passes through the spiral groove and is connected to the sleeve;

[0021] Rotate the sleeve to drive the movable lens to rotate along the spiral groove and move toward or away from the fixed lens.

[0022] In one embodiment of the present invention, the treatment handpiece further includes an angle detector, which is installed on the endoscope assembly or the sleeve assembly and is used to detect the rotation angle of the sleeve relative to the endoscope.

[0023] This utility model also proposes a therapeutic device, which includes a main unit and a therapeutic handpiece as described above, wherein the main unit is connected to the therapeutic handpiece.

[0024] The therapeutic handpiece proposed in this utility model includes a scope tube assembly, a sleeve assembly, and a lens assembly. The scope tube assembly includes a scope tube and at least two positioning parts, both of which are disposed on the scope tube. An optical cavity is formed inside the scope tube for light propagation. The sleeve assembly includes a sleeve and at least two mating parts. The sleeve is rotatably fitted onto the outer periphery of the scope tube, and the at least two mating parts are disposed on the sleeve. The lens assembly includes a fixed lens and a movable lens. The fixed lens is installed inside the scope tube, and the movable lens is movably disposed within the optical cavity and connected to the sleeve. When the sleeve is rotated, it drives the at least two mating parts to alternately engage with the at least two positioning parts, increasing the various combinations of positioning states between the mating and positioning parts. Simultaneously, it drives the movable lens to move along the axial direction of the scope tube, creating more fixed positions between the fixed and movable lenses, thus enabling more light levels and more spot parameters. As the sleeve rotates at different angles, the mating parts also mate with different positioning parts, or different mating parts mate with positioning parts, to switch to different adjustment levels, thereby enabling the movable lens to move to different positions. This achieves the multi-level adjustment function of the treatment handpiece, allowing different levels to be adjusted according to the size of the lesion tissue during actual treatment, thus improving the treatment effect. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0026] Figure 1 An exploded view of an embodiment of the therapeutic handpiece provided by this utility model;

[0027] Figure 2 A partial sectional view of the therapeutic handpiece provided by this utility model;

[0028] Figure 3 This is a schematic diagram of the structure of the therapeutic handpiece provided by this utility model, showing the cooperation between the moving ring and the fixed ring.

[0029] Figure 4 This is a schematic diagram of the structure of the fixing ring in the treatment handpiece provided by this utility model;

[0030] Figure 5 A cross-sectional view of the limiting fit between the moving ring and the endoscope tube in the treatment handpiece provided by this utility model;

[0031] Figure 6 A schematic diagram of the positioning groove and the limiting block in a limiting fit in another embodiment of the therapeutic hand provided by this utility model.

[0032] Explanation of icon numbers:

[0033] 10. Endoscope tube assembly; 11. Endoscope tube; 111. Optical cavity; 112. Spiral groove; 113. Second stop block; 12. Fixed ring; 13. Positioning groove; 130. Positioning groove group; 14. Top cover; 15. Treatment end; 20. Sleeve assembly; 21. Sleeve; 22. Moving ring; 221. Mounting groove; 222. First stop block; 23. Limiting block; 24. Elastic element; 30. Lens assembly; 31. Movable lens; 32. Fixed lens; 33. Connector; 40. Encoder.

[0034] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0036] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0037] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0038] This utility model proposes a therapeutic hand tool.

[0039] Combination Figures 1 to 3 As shown, in one embodiment of this utility model, the treatment handpiece includes a scope tube assembly 10, a sleeve assembly 20, and a lens assembly 30; the scope tube assembly 10 includes a scope tube 11 and at least two positioning parts, both of which are disposed in the scope tube 11, and a light cavity 111 is formed inside the scope tube 11; the sleeve assembly 20 includes a sleeve 21 and at least two mating parts, the sleeve 21 is rotatably fitted around the outer periphery of the scope tube 11, and at least two mating parts are disposed in the sleeve 21; the lens assembly 30 includes a fixed lens 32 and a movable lens 31, the fixed lens 32 is installed inside the scope tube 11, and the movable lens 31 is movably disposed in the light cavity 111 and connected to the sleeve 21; wherein, rotating the sleeve 21 causes the at least two mating parts to alternately engage with the at least two positioning parts in sequence, and drives the movable lens 31 to move along the axial direction of the scope tube 11.

[0040] The endoscope tube 11 is a hollow cylindrical structure with an internal light cavity 111. One end of the endoscope tube 11 is the treatment end 15, which is used to abut against the treatment area during treatment. Light passes through the light cavity 111 and shines onto the treatment area from the treatment end 15. The other end of the endoscope tube 11 is provided with a top cover 14, which is used to seal the endoscope tube 11 and connect the endoscope tube 11 to the main unit. The positioning part can be set on the outer surface of the endoscope tube 11, or an accessory can be set on the endoscope tube 11 and the positioning part can be set on the accessory. The positioning part can be a groove or a protrusion structure, or a mating structure such as a pin or a hole. The positioning part and the mating part on the sleeve 21 form a mechanical constraint. The sleeve 21 is a rotatable annular component, and its inner diameter is adapted to the outer diameter of the endoscope tube 11. When rotated, it drives the mating part to move circumferentially along the endoscope tube 11. The mating part can be a protrusion or a groove structure, or a mating structure such as a hole or a pin adapted to the positioning part, which can create a locking effect with the positioning part and provide tactile feedback when rotated into position.

[0041] It should also be noted that, in order to ensure smooth gear shifting, the positioning part and / or the mating part can be made of elastic material, or an elastic element 24 can be provided on the lens barrel 11 or the sleeve 21, and the elastic element 24 can be connected to the positioning part or the mating part, so that when the positioning part is engaged with the mating part, the two can maintain the engagement state under the action of elastic force, and when an external force is applied, the positioning part and the mating part can be separated, thereby achieving smooth gear shifting.

[0042] The movable lens 31 is linked to the sleeve 21 through the connector 33. When the sleeve 21 rotates, it drives the movable lens 31 to move toward or away from the fixed lens 32 through the connector 33.

[0043] Specifically, when the sleeve 21 is rotated, at least two mating parts move relative to the lens barrel 11 and sequentially engage with at least two positioning parts to achieve the purpose of adjusting the moving distance of the movable lens 31 in steps, thereby achieving the adjustment of the spot size. When the sleeve 21 rotates, each mating part can be respectively limited to different positioning parts, or each mating part can be sequentially limited to the same positioning part. Specific embodiments can be described later.

[0044] Compared to existing technologies, traditional continuously variable adjustment (CVT) tools cannot provide positioning feedback, requiring repeated calibration of the lens position during operation. This solution achieves segmented positioning through a mechanical limiting structure, with each segment corresponding to specific spot parameters, eliminating human judgment errors. The tactile feedback during the rotation of the sleeve 21 allows the operator to accurately perceive segment changes, preventing over- or under-adjustment of the lens.

[0045] Simultaneously, by setting at least two mating parts and at least two positioning parts, and sequentially alternating the mating parts with the positioning parts, the various combinations of limiting states between the mating and positioning parts can be increased. This drives the movable lens to move along the axial direction of the lens barrel, creating more fixed positional distances between the fixed and movable lenses, thus enabling more adjustment levels and a wider range of spot parameters. As the sleeve rotates at different angles, the mating parts correspond to different positioning parts, or different mating parts cooperate with the positioning parts, switching to different adjustment levels. This allows the movable lens to move to different positions, achieving multi-level adjustment of the treatment handpiece. During actual treatment, different levels can be adjusted according to the size of the lesion tissue, improving treatment efficacy.

[0046] Combination Figure 3 and Figure 4 As shown, in one embodiment of this utility model, the positioning part is a positioning groove 13, and the mating part is a limiting block 23.

[0047] The positioning groove 13 refers to a recessed structure on the surface of the lens barrel 11 or other components on the lens barrel 11, which can be formed on the surface of the lens barrel 11 or components by machining or injection molding. The limiting block 23 refers to a protruding structure on the sleeve 21 or other components on the sleeve 21, which can be a metal ball or a plastic block, etc., used to form a contact-type limiting fit with the positioning groove 13. The shapes of the positioning groove 13 and the limiting block 23 are adapted to each other. When the limiting block 23 is embedded in the positioning groove 13, it restricts the free rotation of the sleeve 21 relative to the lens barrel 11.

[0048] Specifically, when the sleeve 21 is rotated, the limiting block 23 moves circumferentially along the lens barrel 11. During rotation, at least two limiting blocks 23 sequentially engage with each positioning slot 13, forming a multi-position adjustment. Each time the limiting block 23 disengages from the current positioning slot 13 and enters the next adjacent positioning slot 13, sufficient torque must be applied to overcome the preload generated by the elastic element 24 or the elastic force of the limiting block 23 itself. At this time, the operator can perceive clear tactile feedback.

[0049] In other embodiments, the positioning part is a limiting block 23, and the mating part is a positioning groove 13.

[0050] Combination Figure 3 and Figure 4 As shown, in one embodiment of the present invention, the lens barrel assembly 10 further includes a fixing ring 12, which is sleeved on one end of the lens barrel 11, and a positioning groove 13 is formed on the end face of the fixing ring 12.

[0051] The sleeve assembly 20 also includes a rotating ring 22, which is disposed inside the sleeve 21 and rotatably fitted onto one end of the lens barrel 11. A limiting block 23 is disposed on the rotating ring 22.

[0052] Among them, the fixed ring 12 refers to the ring component that is fixedly installed at the axial end of the lens barrel 11. Specifically, it can be a metal or plastic material that is fixed to the end of the lens barrel 11 by interference fit or bonding. Its end face serves as the carrier of the positioning groove 13, so that the positioning groove 13 is concentrated on the contact surface of the fixed ring 12 along the axial direction of the lens barrel 11.

[0053] The moving ring 22 is a ring-shaped component nested inside the sleeve 21 and rotating synchronously with the sleeve 21. It can be connected to the sleeve 21 by separate assembly or injection molding. The limiting block 23 protrudes from the end face of the moving ring 22, and the height of the protrusion matches the depth of the positioning groove 13, for example, 0.4-1.0 mm. It is used to embed into the positioning groove 13 during rotation to achieve segmented positioning.

[0054] Specifically, when the operator rotates the sleeve 21, the moving ring 22 rotates around the lens barrel 11 with the sleeve 21, thereby driving the limiting block 23 to move circumferentially along the end face of the fixed ring 12. The positioning grooves 13 distributed on the end face of the fixed ring 12 form multiple circumferentially spaced limiting points. When the limiting block 23 is embedded in a specific positioning groove 13, the rotation angle of the sleeve 21 is locked. At this time, the movable lens 31 moves to the corresponding position, thereby realizing multi-level adjustment of the spot size.

[0055] Since the fixed ring 12 and the moving ring 22 are arranged in layers along the axial direction of the lens barrel 11, that is, the end face contact of the two controls the rotational positioning error within the axial plane, the accuracy of the positioning part and the mating part limit fit can be improved, that is, the control accuracy of the gear adjustment can be improved.

[0056] Furthermore, the arrangement of the positioning slots 13 on the end face of the fixed ring 12 provides greater layout convenience, allowing for the design of different numbers of positioning slots 13. For example, by setting 12 positioning slots 13 on the end face of the fixed ring 12 and setting 2 limit blocks 23 on the moving ring 22, 24 gear adjustments can be achieved, with clear gear feedback every 15 degrees of rotation. Alternatively, by setting 24 positioning slots 13 on the end face of the fixed ring 12 and setting 3 limit blocks 23 on the moving ring 22, 72 gear adjustments can be achieved, with clear gear feedback every 5 degrees of rotation.

[0057] Combination Figure 3 and Figure 4 As shown, in one embodiment of this utility model, there are multiple positioning grooves 13, which are arranged at intervals along the circumference of two concentric circles of the fixed ring 12, forming two positioning groove groups 130 respectively, and the lines connecting any two adjacent positioning grooves 13 to the centers of the concentric circles are not collinear; there are two limiting blocks 23, each limiting block 23 corresponding to a positioning groove group 130; by rotating the sleeve 21, the two limiting blocks 23 are alternately positioned in a positioning groove 13 of the corresponding positioning groove group 130.

[0058] The arrangement of multiple positioning grooves 13 along two concentric circles refers to a positioning groove group 130 consisting of two rings of different diameters, that is, two sets of ring array positioning grooves 13 are machined on the end face of the fixed ring 12. The line connecting any two adjacent positioning grooves 13 to the center of the fixed ring 12 is not collinear, meaning that the line connecting the center of each positioning groove 13 in the two positioning groove groups 130 to the center of the circle has an angular difference. This can be achieved by staggering the positioning grooves 13 in the two positioning groove groups 130. For example, the first ring of positioning grooves 13 is arranged with a 12-degree interval, and the second ring of positioning grooves 13 is arranged with a 12-degree interval but with a starting angle offset of 6 degrees.

[0059] Reference Figure 4Positioning 12 has two sets of positioning slots 130: one set containing slots a, b, and c, and the other set containing slots x, y, and z. The two annular rings containing the two sets of positioning slots share the same center O. No two adjacent positioning slots and their center O are on the same straight line. For example, points a, x, and O are not on the same line, and points a, b, and O are not on the same line.

[0060] The design of the dual limiting blocks 23 gives the treatment handpiece two independent limiting mechanisms. Specifically, when the sleeve 21 is rotated, the moving ring 22 drives the two sets of limiting blocks 23 to rotate synchronously. Due to the phase difference between the two sets of positioning grooves 130, when limiting block A enters a certain positioning groove 13 of the first set of positioning grooves 130, limiting block B is in the transition area between the two positioning grooves 13 of the second set of positioning grooves 130; as the sleeve 21 continues to rotate to the next phase, limiting block B falls into the positioning groove 13 of the second set of positioning grooves 130, while limiting block A leaves its original positioning groove 13. The alternating limiting of the two sets of limiting blocks 23 produces a stepped tactile sensation, with each step corresponding to a specific position of the movable lens 31 along the axis of the lens barrel 11, thereby achieving multi-step adjustment of the spot size.

[0061] Please refer to this again. Figure 4 The two limiting blocks and the center O are on the same straight line. The first limiting block moves along the positioning groove group containing a, b, and c, while the second limiting block moves along the positioning groove group containing x, y, and z. When the second limiting block is in positioning groove x, the first limiting block has not yet entered positioning groove a. At this time, the fixed ring and the moving ring can be fixed together because the second limiting block is in positioning groove x. When the user focuses, the moving ring is rotated, causing the second limiting block to move towards positioning groove y. At the same time, the first limiting block moves towards positioning groove x. First, it overcomes the resistance of the second limiting block when it is in positioning groove x, causing the second limiting block to leave positioning groove x. Before the second limiting block reaches positioning groove y, the first limiting block enters positioning groove a, fixing the fixed ring and the moving ring together. In this way, one minimum distance focusing is completed, and one spot size adjustment is completed. In some other embodiments, the two limiting blocks may not be on the same straight line as the center O. Some deviation may be allowed, but it is still necessary to ensure that the two limiting blocks alternately enter and leave the positioning slots on the corresponding positioning slot groups.

[0062] By setting two concentric staggered positioning groove groups 130, which are respectively matched with two limiting blocks 23, a structure of alternating limiting by double limiting blocks 23 is formed. Compared with a single continuous positioning groove 13 or a parallel positioning groove group 130 without phase difference, this embodiment can increase the number of gear adjustments of the treatment handpiece and improve the adjustment accuracy of the light spot size.

[0063] In another embodiment, a single-circle positioning groove group 130 is provided, and two limiting blocks 23 are provided. The two limiting blocks 23 are arranged at intervals along the circumference of the positioning groove group 130. When the sleeve 21 is rotated, the two limiting blocks 23 are sequentially embedded into the same positioning groove 13. When the limiting block A enters a certain positioning groove 13, the limiting block B is located in the transition area between the two positioning grooves 13. If the sleeve 21 is rotated to the next phase, the limiting block B can fall into the positioning groove 13, while the limiting block A leaves the original positioning groove 13 and is located in the transition area between the two positioning grooves 13.

[0064] In another embodiment, each positioning groove 13 in one positioning groove group 130 is located on the extension line of the line connecting each positioning groove 13 of the other positioning groove group 130 to the center of the concentric circle. That is, the positioning grooves 13 of the two positioning groove groups 130 are collinearly arranged in the radial direction of the fixed ring 12. The centers of the two limiting blocks 23 are not collinear with the line connecting the center of the moving ring 22, and the two limiting blocks 23 are respectively aligned with the two positioning groove groups 130. At this time, rotating the sleeve 21 can also realize that the two limiting blocks 23 are alternately positioned in a positioning groove 13 of the corresponding positioning groove group 130.

[0065] Combination Figure 3 and Figure 6 As shown, in one embodiment of the present invention, the sleeve assembly 20 further includes an elastic element 24, the moving ring 22 has an installation groove 221, one end of the elastic element 24 is embedded in the installation groove 221, and the other end is connected to the limiting block 23, and drives the limiting block 23 to cooperate with the positioning groove 13.

[0066] The elastic element 24 refers to a component capable of elastic deformation and providing restoring force. Specifically, it can be a helical spring, a wave-shaped spring sheet, or an elastic rubber block. Its function is to provide continuous pressure to the limiting block 23 in the direction of the positioning groove 13, ensuring the stability of the limiting fit. The mounting groove 221 refers to a recessed structure on the moving ring 22. Specifically, it can be a rectangular groove, an arc-shaped groove, or a through hole. Its function is to constrain the installation position and deformation direction of the elastic element 24, preventing the elastic element 24 from shifting or falling off during the rotation of the moving ring 22. The limiting block 23 can be a metal ball (e.g., a steel ball), a plastic boss, or a ceramic locking block, and under the elastic force of the elastic element 24, it stably limits the fit with the positioning groove 13.

[0067] When the sleeve 21 drives the rotating ring 22 to rotate, the limiting block 23 is squeezed by the side wall of the positioning groove 13, forcing the elastic element 24 to undergo compression deformation. When it rotates to the position of the positioning groove 13, the elastic element 24 releases its stored elastic potential energy, pushing the limiting block 23 to quickly engage in the positioning groove 13, forming a clear tactile feedback for the gear position. The lateral displacement constraint of the mounting groove 221 on the elastic element 24 can prevent the elastic element 24 from deviating from the predetermined trajectory due to centrifugal force during rotation, ensuring that the limiting block 23 can accurately align with the entrance of the positioning groove 13 each time. In other embodiments, the limiting block 23 can also be made of an elastic material.

[0068] Combination Figure 5 As shown, in one embodiment of the present invention, the moving ring 22 is provided with a first stop block 222 protruding on the side facing the lens barrel 11, and a second stop block 113 is provided on the outer periphery of the lens barrel 11. The first stop block 222 and the second stop block 113 are in a limiting contact to restrict the sleeve 21 from rotating relative to the lens barrel 11 within a first angular range.

[0069] The first stop block 222 is a protruding structure located inside the moving ring 22, which can be formed by metal stamping or injection molding. This protruding structure can contact the second stop block 113 when the moving ring 22 rotates with the sleeve 21. The second stop block 113 is a blocking part located on the outside of the lens barrel 11, which can be a boss structure formed by welding, machining, or integral molding. The cooperation of the two forms a mechanical limit, stopping the rotation of the sleeve 21 through physical blocking.

[0070] Specifically, when the sleeve 21 rotates relative to the lens barrel 11, the moving ring 22 rotates synchronously with the sleeve 21, causing the first stop block 222 to move circumferentially along the lens barrel 11. When the rotation angle reaches a preset threshold, the first stop block 222 and the second stop block 113 come into surface contact, and the contact surfaces of the two generate a counterforce, preventing the moving ring 22 from continuing to rotate. At this time, the rotation angle of the sleeve 21 is limited to a first angle range determined by the positions of the two stop blocks, thereby preventing the movable lens 31 from having an axial displacement exceeding the design stroke due to excessive rotation of the sleeve 21.

[0071] Combination Figure 6 As shown, in one embodiment of the present invention, the sleeve assembly 20 further includes a rotating ring 22, which is disposed inside the sleeve 21 and rotatably sleeved on one end of the lens barrel 11; the positioning groove 13 is opened on the peripheral side of the lens barrel 11, and the limiting block 23 is connected to the inner side of the rotating ring 22 facing the lens barrel 11.

[0072] The specific structure of the moving ring 22 can be referred to the above description and will not be repeated here. The positioning groove 13 is formed on the outer peripheral side of the endoscope tube 11, so that after the moving ring 22 is sleeved on the endoscope tube 11, the limiting block 23 and the positioning groove 13 on the sleeve 21 directly limit and cooperate. This solution moves the positioning groove 13 to the peripheral side of the endoscope tube 11. Compared with the setting of the fixed ring 12 structure, it can reduce the size of the treatment handpiece, especially the reduction of the radial dimension can meet the compactness requirements of the handheld instrument.

[0073] Combination Figure 6 As shown, in one embodiment of this utility model, there are multiple positioning grooves 13, which are arranged at intervals along the circumference of two coaxial circles of the lens barrel 11, forming two positioning groove groups 130 respectively. Each positioning groove 13 of one positioning groove group 130 is offset relative to each positioning groove 13 of the other positioning groove group 130 along the axial direction of the lens barrel 11. There are two limiting blocks 23, each limiting block 23 corresponding to a positioning groove group 130. When the sleeve 21 is rotated, the two limiting blocks 23 are alternately positioned in a positioning groove 13 of the corresponding positioning groove group 130.

[0074] In this embodiment, the arrangement of multiple positioning grooves 13 circumferentially spaced along two coaxial circles refers to a group of positioning grooves 130 consisting of two rings of the same diameter, spaced apart along the axial direction of the lens barrel 11. That is, two sets of annular array positioning grooves 13 are machined and formed on the circumferential side of the lens barrel 11. The positioning grooves 13 of the two groups of positioning grooves 130 are staggered along the axial direction of the lens barrel 11, meaning that the first ring of positioning grooves 13 is located between two adjacent positioning grooves 13 of the second ring.

[0075] When the sleeve 21 is rotated, the moving ring 22 drives the two sets of limiting blocks 23 to rotate synchronously. Due to the staggered arrangement between the two rings of positioning grooves 130, when limiting block A enters a certain positioning groove 13 of the first ring of positioning grooves 130, limiting block B is in the transition area between the two positioning grooves 13 of the second ring of positioning grooves 130; as the sleeve 21 continues to rotate to the next phase, limiting block B falls into the positioning groove 13 of the second ring of positioning grooves 130, while limiting block A leaves its original positioning groove 13. The alternating limiting of the two sets of limiting blocks 23 produces a stepped tactile feel, with each step corresponding to a specific position of the movable lens 31 in the axial direction of the lens barrel 11, thereby realizing multi-step adjustment of the spot size.

[0076] By setting two rings of coaxially staggered positioning grooves 130, which are respectively matched with two limiting blocks 23, a structure of alternating limiting by double limiting blocks 23 is formed, which increases the number of adjustment levels of the treatment handpiece and improves the adjustment accuracy of the light spot size.

[0077] In another embodiment, each positioning groove 13 in one positioning groove group 130 is located vertically corresponding to the positioning groove 13 of another positioning groove group 130 along the axial direction of the lens barrel 11. Two limiting blocks 23 are configured to be offset along the axial direction of the moving ring 22, and the two limiting blocks 23 are respectively aligned with the two positioning groove groups 130. Rotating the sleeve 21 will also allow the two limiting blocks 23 to be alternately positioned within a positioning groove 13 of the corresponding positioning groove group 130.

[0078] Combination Figure 2 As shown, in one embodiment of the present invention, the lens barrel 11 is provided with a spiral groove 112, and the lens assembly 30 also includes a connector 33. One end of the connector 33 is connected to the movable lens 31, and the other end passes through the spiral groove 112 and is connected to the sleeve 21. Rotating the sleeve 21 can drive the movable lens 31 to rotate along the spiral groove 112 and move toward or away from the fixed lens 32.

[0079] The spiral groove 112 is a recessed track with a spiral guiding structure formed on the surface of the lens barrel 11. It can be understood that the groove defined here is actually a spiral through-slot penetrating the lens barrel 11, allowing the connector 33 to pass through the spiral groove 112 and connect with the sleeve 21. The spiral groove 112 converts the rotational motion of the sleeve 21 into the spiral displacement of the connector 33, thereby precisely controlling the axial movement of the movable lens 31 along the lens barrel 11.

[0080] The connecting component 33 refers to the transmission component that rigidly connects the sleeve 21 and the movable lens 31, and can be a metal rod or a plastic connecting rod. This component transmits the rotational power of the sleeve 21 to the movable lens 31 and is constrained by the trajectory of the helical groove 112.

[0081] In other embodiments, the sleeve assembly 20 further includes a transmission mechanism with a worm gear or rack and pinion mechanism, and drives the transmission mechanism to the movable lens 31. The transmission mechanism realizes the function of converting rotary drive into linear drive, thereby realizing the purpose of rotating the sleeve 21 and driving the movable lens 31 to move toward or away from the fixed lens 32.

[0082] Combination Figure 1 and Figure 2 As shown, in one embodiment of the present invention, the treatment handpiece further includes an angle detector, which is installed on the endoscope assembly 10 or the sleeve assembly 20 and is used to detect the rotation angle of the sleeve 21 relative to the endoscope 11.

[0083] The angle detector is a sensor device capable of measuring the relative rotation angle between rotating components. Specifically, it can be implemented using a Hall sensor, photoelectric encoder 40, or potentiometer, and is used to convert the relative angular displacement between the sleeve 21 and the lens barrel 11 into an electrical signal. The angle detector can be installed on the lens barrel assembly 10 or the sleeve assembly 20.

[0084] For example, when the angle detector is an encoder 40, the encoder 40 includes an encoder 40 rotor and an encoder 40 stator. The encoder 40 rotor is mounted on the sleeve 21 or the rotating ring 22, and the encoder 40 stator is mounted on the lens barrel 11 or the top cover 14. When the sleeve 21 rotates, it drives the encoder 40 rotor to rotate. At this time, the encoder 40 stator receives the signal from the encoder 40 rotor, collects and calculates the rotation angle of the sleeve 21, and then transmits the angle information to the host to display the current position information of the treatment handpiece. This allows medical staff to accurately control the movement of the movable lens 31 based on the detection data, avoiding spot size errors caused by excessive or insufficient adjustment, and improving the stability and controllability of the treatment operation.

[0085] This utility model also proposes a therapeutic device, which includes a main unit and a therapeutic handpiece. The specific structure of the therapeutic handpiece is as described in the above embodiments. Since this therapeutic device adopts all the technical solutions of all the embodiments of the therapeutic handpiece described above, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here. The main unit and the therapeutic handpiece are communicatively connected.

[0086] Specifically, when the sleeve 21 of the treatment handpiece rotates, at least two limiting blocks 23 and at least two positioning grooves 13 inside it alternately limit the movement and drive the movable lens 31 to move axially along the barrel 11 to a preset position. The host obtains the rotation angle data of the sleeve 21 in real time through the communication interface, and analyzes the displacement of the movable lens 31 in combination with a preset algorithm to generate corresponding light spot parameters. During treatment, when the medical staff rotates the sleeve 21 to a certain position, the mechanical cooperation between the limiting block 23 and the positioning groove 13 generates tactile feedback, and the host displays the current light spot size simultaneously, realizing closed-loop control of the adjustment operation, thereby improving the accuracy of light spot size adjustment.

[0087] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A therapeutic hand instrument, characterized in that The treatment handpiece includes: A lens barrel assembly, the lens barrel assembly including a lens barrel and at least two positioning parts, the at least two positioning parts being disposed in the lens barrel, and an optical cavity being formed inside the lens barrel; A sleeve assembly, the sleeve assembly including a sleeve and at least two mating portions, the sleeve being rotatably fitted onto the outer periphery of the lens barrel, and at least two of the mating portions being disposed on the sleeve; and A lens assembly, comprising a fixed lens and a movable lens, wherein the fixed lens is installed inside the lens barrel, and the movable lens is movably disposed in the optical cavity and connected to the sleeve; Rotating the sleeve causes at least two of the mating parts to alternately engage with at least two of the positioning parts, thereby driving the movable lens to move along the axial direction of the lens barrel.

2. The treatment handpiece of claim 1, wherein, The positioning part is a positioning groove, and the mating part is a limiting block.

3. The treatment handpiece of claim 2, wherein, The lens barrel assembly also includes a retaining ring, which is sleeved on one end of the lens barrel, and the positioning groove is formed on the end face of the retaining ring; The sleeve assembly further includes a rotating ring, which is disposed inside the sleeve and rotatably fitted onto one end of the lens barrel, and the limiting block is disposed on the rotating ring.

4. The treatment handpiece of claim 3, wherein the first and second treatment heads are configured to be used simultaneously. There are multiple positioning slots, which are arranged at intervals along the circumference of the two concentric circles of the fixed ring, forming two positioning slot groups respectively. The lines connecting any two adjacent positioning slots to the centers of the concentric circles are not collinear. Two limiting blocks are provided, and each limiting block corresponds to one of the positioning groove groups; Rotating the sleeve causes the two limiting blocks to alternately be positioned within one of the corresponding positioning slots of the positioning slot group.

5. The treatment handpiece as described in claim 3, characterized in that, The sleeve assembly also includes an elastic element. The moving ring has an installation groove. One end of the elastic element is embedded in the installation groove, and the other end is connected to the limiting block, driving the limiting block to engage with the positioning groove.

6. The treatment handpiece as described in claim 3, characterized in that, The moving ring has a first stop block protruding on the side facing the lens barrel, and the lens barrel has a second stop block on its outer periphery. The first stop block and the second stop block are in limiting contact to restrict the sleeve from rotating relative to the lens barrel within a first angular range.

7. The treatment handpiece as described in claim 2, characterized in that, The sleeve assembly further includes a rotating ring, which is disposed inside the sleeve and rotatably fitted onto one end of the lens barrel; The positioning groove is formed on the peripheral side of the lens barrel, and the limiting block is connected to the inner side of the moving ring facing the lens barrel.

8. The treatment handpiece as described in any one of claims 1 to 7, characterized in that, The lens barrel is provided with a spiral groove, and the lens assembly also includes a connector. One end of the connector is connected to the movable lens, and the other end passes through the spiral groove and is connected to the sleeve. Rotate the sleeve to drive the movable lens to rotate along the spiral groove and move toward or away from the fixed lens.

9. The treatment handpiece as described in any one of claims 1 to 7, characterized in that, The treatment handpiece also includes an angle detector, which is mounted on the endoscope assembly or the sleeve assembly and is used to detect the rotation angle of the sleeve relative to the endoscope.

10. A therapeutic device, characterized in that, The therapeutic device includes a main unit and a therapeutic handpiece as described in any one of claims 1 to 9, wherein the main unit is connected to the therapeutic handpiece.

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