Connecting structure and therapeutic apparatus

Abstract

The utility model discloses a connecting structure and a therapeutic instrument, and relates to the technical field of medical instruments, the connecting structure comprises a connecting piece, a joint, a locking piece and a clamping piece, the connecting piece is provided with a first light passing hole and a clamping groove; the connector is provided with a second light passing hole and a limiting cavity communicated with the second light passing hole, one of the connecting piece and the connector is arranged on the hand tool, and the other one of the connecting piece and the connector is arranged on the light guide arm. At least part of the clamping piece is movably arranged in the limiting cavity, and the clamping piece is provided with a locking space; the locking piece is movably arranged on the connector, and at least part of the locking piece movably penetrates through the locking space. Wherein the connecting structure has a connecting state and a separating state; in the connecting state, the locking piece penetrates through the first position of the locking space, the clamping piece penetrates through the limiting cavity and the clamping groove, and the first light passing hole communicates with the second light passing hole; and in the separation state, the locking piece is arranged at the second position of the locking space in a penetrating mode, and the clamping piece is located in the limiting cavity. According to the technical scheme provided by the utility model, the mounting difficulty of the hand tool and the abrasion caused by disassembly and assembly are reduced.

Description

Technical Field

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

[0002] During laser treatment, the laser output needs to be delivered to the diseased tissue through a handpiece to achieve the therapeutic goal. Different diseased tissues require different spot sizes and energy densities for treatment; therefore, different types of handpieces are needed to address different treatment needs.

[0003] Currently, the connection between the handpiece and the light guide arm is mainly via threaded connection. During assembly, when the thread length is long, tightening the handpiece takes a long time and is difficult; when the thread length is short, the handpiece is prone to loosening. To ensure that the laser emitted from the light guide arm is centered on the handpiece lens using a threaded connection, the precision of the thread fit needs to be carefully controlled. This requires high-precision thread processing, resulting in high costs. Furthermore, repeated disassembly and reassembly of the handpiece will cause the threads to wear, reducing precision and making it impossible to guarantee that the emitted laser passes through the center of the handpiece lens. Small debris from thread wear may fall into the handpiece, contaminating the lens and potentially damaging it over time. Utility Model Content

[0004] The main purpose of this invention is to propose a connection structure and a treatment device that aims to reduce the difficulty of installing the handpiece while reducing wear caused by repeated disassembly and assembly.

[0005] To achieve the above objectives, this utility model proposes a connection structure for connecting a handpiece and a light guide arm, the connection structure comprising:

[0006] The connector is provided with a first light-passing hole and a slot;

[0007] The connector is provided with a second light-passing hole and a limiting cavity communicating with the second light-passing hole. One of the connector and the connector is disposed in the hand tool, and the other is disposed in the light guide arm.

[0008] The engaging member, at least a portion of which is movably disposed within the limiting cavity, has a locking space; and

[0009] A locking element, which is movably disposed on the joint and at least partially movably disposed through the locking space;

[0010] The connection structure has a connection state in which the connector is connected to the joint and a separation state in which the connector is separated from the joint.

[0011] In the connected state, the locking member passes through the first position of the locking space, the engaging member passes through the limiting cavity and the slot, and the first light-passing hole and the second light-passing hole are connected;

[0012] In the separated state, the locking member is inserted into the second position of the locking space, and the engaging member is located in the limiting cavity.

[0013] In one embodiment, the engaging member includes an engaging portion and a trigger portion connected to each other. The engaging portion is movably limited within the limiting cavity. The locking space is disposed in the engaging portion. The trigger portion extends out of the limiting cavity and is disposed at an angle with the engaging portion. The trigger portion is used to drive the engaging portion to move within the limiting cavity.

[0014] In one embodiment, the engaging member further includes a first elastic member, one end of which is connected to the outer wall of the connector, and the other end of which is connected to the trigger portion.

[0015] In one embodiment, the connector is provided with a mounting groove spaced apart from the second light-passing hole, the mounting groove is connected to the limiting cavity, and the locking member is movably limited within the mounting groove.

[0016] In one embodiment, the mounting groove extends through the limiting cavity and the end face of the connector. A second elastic member is provided in the mounting groove. One end of the second elastic member abuts against the bottom wall of the mounting groove, and the other end of the second elastic member is connected to the locking member. The locking member is adapted to extend out of the mounting groove so that the connector can press against it.

[0017] In one embodiment, the locking space includes a first through hole and a second through hole, the first through hole forming the first position and the second through hole forming the second position.

[0018] In one embodiment, the first through hole and the second through hole are connected by a notch, and the locking member includes a first section and a second section. In the connected state, the first section passes through the first through hole, and in the separated state, the second section passes through the second through hole.

[0019] Wherein, the cross-sectional diameter of the first segment is smaller than that of the second segment, the diameter of the first through hole is smaller than that of the second segment, and the diameter of the notch is smaller than that of the second segment but larger than that of the first segment.

[0020] In one embodiment, the locking member further includes a third segment connected to the end of the second segment opposite to the first segment, and the cross-sectional diameter of the third segment is larger than the diameter of the second through hole;

[0021] And / or, the locking member further includes a fourth segment, which is connected to the end of the first segment opposite to the second segment, and the cross-sectional diameter of the fourth segment is larger than the diameter of the notch.

[0022] In one embodiment, the second light-passing hole includes a first part and a second part. A limiting platform is formed at the connection between the sidewall of the first part and the sidewall of the second part. The connector is provided with an abutment platform. In the connected state, the connector extends into the first part and abuts against the limiting platform. The abutment platform abuts against the end face of the connector.

[0023] This utility model also proposes a therapeutic device, which includes a hand, a light guide arm, and a connection structure as described above. The hand is provided with the connector, and the light guide arm is provided with the joint.

[0024] The technical solution of this utility model includes a connecting member, a connector, a locking member, and a locking member. The connecting member has a first light-passing hole and a slot, and the connector has a second light-passing hole and a limiting cavity communicating with the second light-passing hole. The locking member and the connector are movably connected, and the locking member is at least partially movably disposed in the limiting cavity. The locking member has a locking space, and the locking member is movably disposed in the connector and at least partially movably passes through the locking space. In the separated state where the connecting member and the connector are separated, the locking member passes through the second position of the locking space. At this time, the position of the locking member is fixed in the limiting cavity relative to the connector and will not protrude, which facilitates the insertion and engagement of the connecting member and the connector. When the connecting member and the connector are connected, the connecting member and the connector are inserted and engaged so that the slot of the connecting member and the limiting cavity of the connector are aligned. At the same time, the locking member moves relative to the connector. At this time, the locking member can move along the limiting cavity and at least partially extend into the slot. Correspondingly, the locking member also moves to the first position of the locking space, and the connecting member and the connector are connected. The connector can be placed on the handpiece and the joint on the light guide arm, or the connector can be placed on the light guide arm and the connector on the handpiece. In this way, the handpiece does not need to be disassembled and assembled through a threaded structure, which reduces the difficulty of the handpiece installation and reduces the possibility of wear during the handpiece installation process, and prevents wear debris from falling into the handpiece and contaminating it. 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 A schematic diagram of the connection structure in a connected state in one embodiment of this utility model;

[0027] Figure 2 A schematic diagram of the connection structure in a separated state in one embodiment of this utility model;

[0028] Figure 3 A cross-sectional view of the connecting structure in a separated state in one embodiment of the present invention;

[0029] Figure 4 A schematic diagram showing the disassembled structure of the connector, engaging component, and locking component in one embodiment of this utility model;

[0030] Figure 5 This is a schematic diagram of the locking component in one embodiment of the present invention.

[0031] Explanation of icon numbers:

[0032] 100. Connection structure; 1. Connector; 11. First light-passing hole; 12. Slot; 13. Abutment platform; 2. Connector; 21. Second light-passing hole; 211. First part; 212. Second part; 213. Limiting platform; 22. Limiting cavity; 23. Limiting groove; 24. Mounting groove; 3. Engaging part; 31. Engaging part; 311. First through hole; 312. Second through hole; 313. Notch; 32. Trigger part; 33. First elastic element; 4. Locking element; 41. First section; 42. Second section; 43. Third section; 44. Fourth section; 5. Second elastic element.

[0033] 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

[0034] 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.

[0035] 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.

[0036] 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.

[0037] Please refer to the reference. Figures 1 to 5 As shown, this utility model proposes a connecting structure 100 for connecting a handpiece and a light guide arm. The connecting structure 100 includes a connector 1, a joint 2, a locking member 4, and a locking member 3. The connector 1 is provided with a first light-passing hole 11 and a slot 12; the joint 2 is provided with a second light-passing hole 21 and a limiting cavity 22 communicating with the second light-passing hole 21. One of the connector 1 and the joint 2 is disposed on the handpiece, and the other is disposed on the light guide arm; at least part of the locking member 3 is movably disposed within the limiting cavity 22, and the locking member 3 is provided with a locking space. The locking member 4 is movably disposed on the connector 2 and at least partially movably disposed through the locking space; wherein, the connecting structure 100 has a connected state in which the connector 1 is connected to the connector 2 and a separated state in which the connector 1 is separated from the connector 2; in the connected state, the locking member 4 is disposed through the first position of the locking space, the engaging member 3 is disposed through the limiting cavity 22 and the slot 12, and the first light-passing hole 11 and the second light-passing hole 21 are connected; in the separated state, the locking member 4 is disposed through the second position of the locking space, and the engaging member 3 is located in the limiting cavity 22.

[0038] In this embodiment, one of the connector 1 and the connector 2 is located on the handpiece, and the other is located on the light guide arm. The handpiece and the light guide arm are detachably connected through the connector 1 and the connector 2. The connector 1 and the connector 2 are respectively provided with a first light-passing hole 11 and a second light-passing hole 21 for the laser to pass through, thereby realizing the light transmission between the light guide arm and the handpiece. The connector 1 and the joint 2 are locked together by the cooperation of the engaging member 3 and the locking member 4. At least part of the engaging member 3 is movably disposed in the limiting cavity 22 on the joint 2. The limiting cavity 22 is connected to the second light-passing hole 21 of the joint 2. The engaging member 3 can extend from the limiting cavity 22 into the second light-passing hole 21, or exit from the second light-passing hole 21. When the connector 1 and the joint 2 are connected, the connector 1 extends into the second light-passing hole 21 until the limiting cavity 22 and the slot 12 of the connector 1 are aligned. At this time, the engaging member 3 can extend from the limiting cavity 22 into the second light-passing hole 21 to insert into the slot 12 of the connector 1. This can prevent the connector 1 from coming out of the second light-passing hole 21 of the joint 2, which would cause the connector 1 and the joint 2 to separate.

[0039] Meanwhile, the locking member 4 is movably mounted on the connector 2, and the engaging member 3 has a locking space. When the connecting structure 100 is in the connected state, the engaging member 3 is inserted into the slot 12 of the connector 1, and the locking member 4 is positioned in the first position of the locking space. When the connecting structure 100 is in the separated state, the engaging member 3 leaves the second light-passing hole 21 and is located in the limiting cavity 22. The locking member 4 is positioned in the second position of the locking space, locking the engaging member 3 in this position so that it remains in this position and does not move along the limiting cavity 22 into the second light-passing hole 21, thus preventing the connector 1 from extending into the second light-passing hole 21 and facilitating the connection between the connector 1 and the connector 2. This eliminates the need for disassembly and assembly of the handpiece with the light guide arm via a threaded structure, reducing the difficulty of handpiece installation, minimizing the possibility of wear during installation, and preventing wear debris from falling into the handpiece and contaminating it.

[0040] In actual implementation, the moving direction of the locking member 4 is set at an angle to the moving direction of the engaging member 3, so as to limit the locking member 4 to the engaging member 3. Optionally, the moving direction of the locking member 4 is set perpendicular to the moving direction of the engaging member 3.

[0041] In one embodiment of the present invention, the engaging member 3 includes an engaging part 31 and a trigger part 32 connected to each other. The engaging part 31 is movably limited in the limiting cavity 22, and the locking space is provided in the engaging part 31. The trigger part 32 extends out of the limiting cavity 22 and is set at an angle with the engaging part 31. The trigger part 32 is used to drive the engaging part 31 to move within the limiting cavity 22.

[0042] In this embodiment, the engaging part 31 is movably confined within the limiting cavity 22. It can extend from the limiting cavity 22 into the second light-passing hole 21 to engage with the slot 12 of the connector 1, or it can move along the limiting cavity 22 away from the second light-passing hole 21, avoiding interference with the connector 1's insertion into the second light-passing hole 21. The trigger part 32 extends out of the limiting cavity 22. By moving the trigger part 32, the user can drive the engaging part 31 to move along the limiting cavity 22, thereby causing the engaging part 31 to extend from the limiting cavity 22 into or out of the second light-passing hole 21. The trigger part 32 and the engaging part 31 are arranged at an angle to facilitate the user's manual grasping of the trigger part 32 and movement of the engaging part 3. At the same time, the trigger part 32 can form a limit with the opening of the limiting cavity 22, thereby limiting the movement stroke of the engaging part 31 and preventing the engaging part 31 from moving beyond its range within the limiting cavity 22.

[0043] In actual implementation, the engaging part 31 is arranged in a ring shape, the locking space is located at one end of the engaging part 31, and the trigger part 32 is connected to the other end of the engaging part 31. In this way, the trigger part 32 and the locking member 4 are arranged as far apart as possible to facilitate the assembly of the connecting structure 100.

[0044] In one embodiment of this utility model, such as Figures 1 to 4 As shown, the engaging member 3 also includes a first elastic member 33, one end of which is connected to the outer wall of the connector 2, and the other end of which is connected to the trigger part 32.

[0045] Understandably, when the connection structure 100 switches between the connected state and the disconnected state, the engaging part 31 also switches between the position of extending into the second light-passing hole 21 and the position of leaving the second light-passing hole 21.

[0046] In this embodiment, the two ends of the first elastic member 33 are respectively connected to the connector 2 and the trigger part 32. During the process of the connection structure 100 switching from the connected state to the separated state, the user needs to use the trigger part 32 to drive the engaging part 31 away from the second light-passing hole 21. The first elastic member 33 located between the connector 2 and the trigger part 32 deforms. When the engaging part 31 is in place, the locking member 4 is inserted into the second position of the locking space, so that the position of the engaging part 31 is locked and the first elastic member 33 remains deformed. During the process of the connection structure 100 switching from the separated state to the connected state, when the locking member 4 moves out from the second position of the locking space and releases the lock on the position of the engaging part 31, the first elastic member 33 rebounds and, through the trigger part 32, drives the engaging part 31 to automatically extend into the second light-passing hole 21 and engage in the slot 12 of the connector 1. This simplifies the user's connection operation of the connector 2 and the connector 1 and improves the ease of use.

[0047] Optionally, when the connecting structure 100 is in the connected state, the first elastic member 33 can also be in a deformed state, so that the engaging portion 31 always tends to move into the slot 12, thereby improving the engagement stability and reliability of the engaging member 3. It is understood that the first elastic member 33 will further deform when the connecting structure 100 is in the separated state.

[0048] Optionally, during the process of switching the connection structure 100 from a separated state to a connected state, the user drives the engaging part 31 to extend into the second light-passing hole 21 through the trigger part 32, causing the first elastic member 33 to deform. When the engaging part 31 is in place, the locking member 4 passes through the first position of the locking space, the position of the engaging part 31 is locked, and the first elastic member 33 remains deformed. During the process of switching the connection structure 100 from a connected state to a separated state, when the locking member 4 moves out from the first position of the locking space, releasing the lock on the position of the engaging part 31, the first elastic member 33 rebounds, and the engaging part 31 automatically leaves the second light-passing hole 21 through the trigger part 32.

[0049] In actual implementation, the outer wall of the connector 2 is provided with a limiting groove 23, one end of the first elastic member 33 is limited in the limiting groove 23, and the other end of the first elastic member 33 abuts against the trigger part 32.

[0050] In one embodiment of this utility model, such as Figures 1 to 4 As shown, the connector 2 is provided with a mounting groove 24 spaced apart from the second light-passing hole 21. The mounting groove 24 is connected to the limiting cavity 22, and the locking member 4 is movably limited in the mounting groove 24.

[0051] In this embodiment, the locking member 4 is movably disposed within the mounting groove 24 to achieve connection with the connector 2. The locking member 4 is limited by the groove wall of the mounting groove 24, so that the locking member 4 can only move along the extension direction of the mounting groove 24. This ensures the locking effect of the locking member 4 on the engaging member 3 and prevents the locking member 4 from moving when locking the engaging member 3.

[0052] In actual implementation, the extension direction of the mounting groove 24 is parallel to the axial direction of the second light-passing hole 21, and the movement direction of the engaging member 3 and the limiting cavity 22 is perpendicular to the axial direction of the second light-passing hole 21, to ensure the locking effect of the locking member 4 on the engaging member 3. Optionally, the position of the locking member 4 in the mounting groove 24 can be manually driven. Part of the sidewall of the mounting groove 24 penetrates the side of the connector 2, and at least part of the locking member 4 is located outside the sidewall of the connector 2, so that the user can manually drive the movement of the locking member 4.

[0053] In one embodiment of this utility model, such as Figures 1 to 4 As shown, the locking space includes a first through hole 311 and a second through hole 312, with the first through hole 311 forming a first position and the second through hole 312 forming a second position.

[0054] In this embodiment, when the connecting structure 100 is in the connected state, the first through hole 311 is directly opposite the mounting groove 24, and the locking member 4 in the mounting groove 24 passes through the first through hole 311; when the connecting structure 100 is in the separated state, the second through hole 312 is directly opposite the mounting groove 24, and the locking member 4 in the mounting groove 24 passes through the second through hole 312. Thus, when the connecting structure 100 is in the connected state, the locking member 4 limits the engagement member 3 by passing through the first through hole 311, so that the engagement member 3 remains extended into the slot 12, preventing the connector 1 and the joint 2 from separating; when the connecting structure 100 is in the separated state, the locking member 4 limits the engagement member 3 by passing through the second through hole 312, and the engagement member 3 remains extended out of the second light-passing hole 21, avoiding interference with the insertion of the connector 1 into the second light-passing hole 21.

[0055] Optionally, on a cross section perpendicular to the moving direction of the locking member 4, the cross-sectional area of ​​the locking member 4 is set to correspond to the cross-sectional area of ​​the first through hole 311 and the cross-sectional area of ​​the second through hole 312, so as to improve the limiting effect of the locking member 4 on the engaging member 3.

[0056] In one embodiment of this utility model, such as Figures 1 to 5 As shown, the first through hole 311 and the second through hole 312 are connected by a notch 313. The locking member 4 includes a first section 41 and a second section 42. In the connected state, the first section 41 passes through the first through hole 311, and in the separated state, the second section 42 passes through the second through hole 312. The cross-sectional diameter of the first section 41 is smaller than that of the second section 42, the diameter of the first through hole 311 is smaller than that of the second section 42, and the diameter of the notch 313 is smaller than that of the second section 42 but larger than that of the first section 41.

[0057] In this embodiment, the locking member 4 includes a first segment 41 and a second segment 42 with different cross sections. The first segment 41 can switch between the first through hole 311 and the second through hole 312 through the notch 313 and is inserted into the first through hole 311. The second segment 42 cannot switch between the first through hole 311 and the second through hole 312 through the notch 313 and can only be inserted into the second through hole 312.

[0058] In actual implementation, when the connecting structure 100 is in a separated state, the second section 42 of the locking member 4 passes through the second through hole 312. The second section 42 is limited and engaged with the hole wall of the second through hole 312, so that the locking part 31 remains away from the second light-passing hole 21, and the first elastic member 33 remains in a deformed state to avoid interfering with the insertion of the connecting member 1 into the second light-passing hole 21.

[0059] When the connecting structure 100 is in the connected state, the engaging part 31 engages in the slot 12 of the connector 1, the first section 41 of the locking member 4 passes through the first through hole 311, and the first elastic member 33 is in the restored state.

[0060] During the process of switching the connection structure 100 from a separated state to a connected state, the user can insert the connector 1 into the second light-passing hole 21 of the connector 2 and move the locking member 4 along the mounting groove 24 to switch the locking member 4 part passing through the second through hole 312 from the second section 42 to the first section 41. Since the cross-sectional diameter of the first section 41 is smaller than the hole diameter of the second through hole 312, the engaging part 31 is no longer limited. The first elastic member 33 rebounds and drives the engaging part 31 to extend into the second light-passing hole 21 and be engaged in the slot 12. At the same time, as the engaging part 31 moves, the first section 41 passes through the notch 313 and is inserted into the first through hole 311.

[0061] During the process of switching the connection structure 100 from the connected state to the separated state, the user presses the trigger part 32 to drive the engaging part 31 out of the slot 12, and causes the first elastic member 33 located between the trigger part 32 and the connector 2 to deform. At the same time, as the engaging part 31 moves, the first segment 41 passes through the notch 313 and is inserted into the second through hole 312. Then, the locking member 4 is moved along the mounting groove 24 to switch the locking member 4 part inserted into the second through hole 312 from the first segment 41 to the second segment 42. The second segment 42 is limited and engaged with the hole wall of the second through hole 312, so that the engaging part 31 maintains the state of the second light-passing hole 21, and the first elastic member 33 is in a deformed state.

[0062] In one embodiment of this utility model, such as Figures 1 to 4 As shown, the mounting groove 24 passes through the end face of the limiting cavity 22 and the connector 2. A second elastic member 5 is provided in the mounting groove 24. One end of the second elastic member 5 abuts against the bottom wall of the mounting groove 24, and the other end of the second elastic member 5 is connected to the locking member 4. The locking member 4 is adapted to extend out of the mounting groove 24 so that the connector 1 can press against it.

[0063] In this embodiment, when the connecting structure 100 is in the separated state, the engaging member 3 is located at the position extending out of the second light-passing hole 21, and the first elastic member 33 is in a deformed state. At this time, the second through hole 312 of the locking space is directly opposite the mounting groove 24. The second section 42 of the locking member 4 in the mounting groove 24 passes through the second through hole 312 so that the engaging part 31 remains away from the second light-passing hole 21, the first elastic member 33 remains in a deformed state, and at the same time, the locking member 4 partially extends out of the mounting groove 24, and the second elastic member 5 is in a restored state.

[0064] When the connecting structure 100 is in the connected state, the engaging member 3 is positioned to extend into the second light-passing hole 21 and engage with the slot 12, and the first elastic member 33 is in the restored state. At this time, the first through hole 311 of the locking space is directly opposite the mounting slot 24. The first section 41 of the locking member 4 in the mounting slot 24 passes through the first through hole 311, and the second section 42 is limited and abuts against the outer wall surface of the first through hole 311, so that the second elastic member 5 remains in the deformed state.

[0065] During the transition of the connecting structure 100 from a separated state to a connected state, the connector 1 moves closer to the joint 2 to press against the portion of the locking member 4 extending out of the mounting groove 24. As the connector 1 extends into the second through hole 21, the locking member 4 moves along the mounting groove 24 towards the bottom of the groove. The portion of the locking member 4 passing through the second through hole 312 switches from the second section 42 to the first section 41, causing the second elastic member 5 located between the bottom of the mounting groove 24 and the locking member 4 to deform. After losing the restraint of the second section 42 and the wall of the second through hole 312, the first elastic member 33 rebounds. The triggering part 32 drives the engaging part 31 to move, so that the engaging part 31 extends into the second light-passing hole 21 and is engaged in the slot 12. At the same time, as the engaging part 31 moves, the first through hole 311 is aligned with the mounting slot 24, and the first segment 41 passes through the notch 313 into the first through hole 311. Furthermore, since the cross-sectional diameter of the second segment 42 is larger than the diameter of the first through hole 311, the second segment 42 cannot extend into the first through hole 311. The second segment 42 is limited and engaged with the outer wall surface of the first through hole 311, so that the second elastic member 5 is in a deformed state.

[0066] When the connection structure 100 changes from the connected state to the separated state, the user presses the trigger part 32 to drive the engaging part 31 out of the slot 12 and away from the second light-passing hole 21. At this time, as the engaging part 31 moves, the first elastic member 33 deforms, and the first segment 41 switches from passing through the first through hole 311 to passing through the second through hole 312 through the notch 313. The second segment 42 is no longer limited to the outer wall surface of the first through hole 311. Then, the second elastic member 5 rebounds, driving the locking member 4 to move away from the bottom of the mounting groove 24 so that the second segment 42 passes through the second through hole 312. The locking member 4 extends out of the mounting groove 24. Under the limiting action of the second segment 42 and the hole wall of the second through hole 312, the engaging part 31 remains in the position of extending out of the second light-passing hole 21, and the first elastic member 33 remains in the deformed state.

[0067] In this way, the locking member 4 can switch between the first through hole 311 and the second through hole 312 in the locking space without having to change its position manually, thus realizing the automatic locking function of the locking member 4 on the engaging member 3 and improving the practicality of the connection structure 100.

[0068] In one embodiment of this utility model, such as Figures 1 to 5As shown, the locking member 4 also includes a third section 43, which is connected to the end of the second section 42 away from the first section 41. The cross-sectional diameter of the third section 43 is larger than the diameter of the second through hole 312.

[0069] In this embodiment, the second elastic member 5 can be in a deformable state when the connecting structure 100 is in a separated state. When the connecting structure 100 is in a connected state, the second elastic member 5 deforms further, thereby improving the stability of the locking member 4 moving along the mounting groove 24. Furthermore, when the connecting structure 100 is in a separated state, the second segment 42 passes through the second through hole 312. Since the cross-sectional diameter of the third segment 43 is larger than the diameter of the second through hole 312, the third segment 43 is matched with the outer wall of the second through hole 312 to prevent the second elastic member 5 from further rebounding. After the locking member 4 is installed in place, the third segment 43 is always located between the mounting groove 24 and the engaging part 31. The second elastic member 5 can abut against the locking member 4 and the bottom of the mounting groove 24, and neither the locking member 4 nor the second elastic member 5 will detach from the mounting groove 24.

[0070] Optionally, the locking member 4 also includes a fourth segment 44, which is connected to the end of the first segment 41 that is away from the second segment 42, and the cross-sectional diameter of the fourth segment 44 is larger than the diameter of the notch 313.

[0071] In this embodiment, the cross-sectional diameter of the fourth segment 44 is also larger than the diameter of the first through hole 311. Therefore, when the connecting structure 100 is in the connected state, the setting of the fourth segment 44 can prevent the end of the first segment 41 that is far away from the second segment 42 from accidentally coming out of the first through hole 311, causing the locking member 4 to leave the locking space, and the engaging member 3 to lose the limiting of the locking member 4 and come out of the limiting cavity 22.

[0072] In one embodiment of this utility model, such as Figures 1 to 5 As shown, the second light-passing hole 21 includes a first part 211 and a second part 212. The side wall of the first part 211 and the side wall of the second part 212 are connected to form a limiting platform 213. The connector 1 is provided with an abutment platform 13. In the connected state, the connector 1 extends into the first part 211 and abuts against the limiting platform 213. The abutment platform 13 abuts against the end face of the connector 2.

[0073] In this embodiment, the abutment limiting of the limiting platform 213 and the abutment platform 13 can limit the length of the connector 1 extending into the second light-passing hole 21. Thus, when the user inserts the connector 1 into the first part 211, and the limiting platform 213 and the abutment platform 13 limit each other, and the connector 1 can no longer extend into the second light-passing hole 21, the user knows that the connector 1 has been inserted into the connector 2, so as to facilitate the user's positioning and insertion of the connector 1 and the plug.

[0074] In actual implementation, when the limiting platform 213 and the abutment platform 13 mutually limit each other, the limiting cavity 22 is exactly connected to the slot 12 of the connector 1, so that the engaging member 3 can be engaged into the slot 12 through the limiting cavity 22. It can be understood that when the connector 1 is inserted into the first part 211, the inner wall of the first part 211 limits the connector 1, preventing it from wobbling within the second light-passing hole 21. Optionally, the slot 12 is arranged circumferentially around the connector 1, so that the user does not need to rotate the connector 1 relative to it before inserting it into the second light-passing hole 21 to align the slot 12 with the portion of the engaging member 3 that can extend into the second light-passing hole 21, thus greatly improving the convenience of the user in using the connecting structure 100.

[0075] This utility model also proposes a therapeutic device, which includes a handpiece, a light guide arm, and a connecting structure 100 as described above. The specific structure of the connecting structure 100 is as described in the above embodiments. Since this therapeutic device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be described in detail here. The handpiece is provided with a connector 1, and the light guide arm is provided with a joint 2. The handpiece and the light guide arm can be quickly assembled and disassembled through the connecting structure 100, which also reduces wear on the handpiece and the light guide arm during assembly and disassembly, prevents wear debris from falling into the handpiece and contaminating it, and ensures the light guiding quality of the light guide arm and the handpiece.

[0076] 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 connecting structure for connecting a handpiece and a light guide arm, characterized in that, The connection structure includes: The connector is provided with a first light-passing hole and a slot; The connector is provided with a second light-passing hole and a limiting cavity communicating with the second light-passing hole. One of the connector and the connector is disposed in the hand tool, and the other is disposed in the light guide arm. The engaging member, at least a portion of which is movably disposed within the limiting cavity, has a locking space; and A locking element, which is movably disposed on the joint and at least partially movably disposed through the locking space; The connection structure has a connection state in which the connector is connected to the joint and a separation state in which the connector is separated from the joint. In the connected state, the locking member passes through the first position of the locking space, the engaging member passes through the limiting cavity and the slot, and the first light-passing hole and the second light-passing hole are connected; In the separated state, the locking member is inserted into the second position of the locking space, and the engaging member is located in the limiting cavity.

2. The connection structure as described in claim 1, characterized in that, The engaging component includes an engaging part and a trigger part connected to each other. The engaging part is movably limited within the limiting cavity. The locking space is provided in the engaging part. The trigger part extends out of the limiting cavity and is set at an angle with the engaging part. The trigger part is used to drive the engaging part to move within the limiting cavity.

3. The connection structure as described in claim 2, characterized in that, The engaging component further includes a first elastic element, one end of which is connected to the outer wall of the connector, and the other end of which is connected to the trigger portion.

4. The connection structure as described in claim 3, characterized in that, The connector is provided with a mounting groove spaced apart from the second light-passing hole, the mounting groove is connected to the limiting cavity, and the locking member is movably limited within the mounting groove.

5. The connection structure as described in claim 4, characterized in that, The mounting groove extends through the limiting cavity and the end face of the connector. A second elastic element is provided in the mounting groove. One end of the second elastic element abuts against the bottom wall of the mounting groove, and the other end of the second elastic element is connected to the locking element. The locking element is adapted to extend out of the mounting groove so that the connector can press against it.

6. The connection structure as described in claim 1, characterized in that, The locking space includes a first through hole and a second through hole, the first through hole forming the first position and the second through hole forming the second position.

7. The connection structure as described in claim 6, characterized in that, The first through hole and the second through hole are connected by a notch. ， The locking member includes a first section and a second section. In the connected state, the first section passes through the first through hole, and in the separated state, the second section passes through the second through hole. Wherein, the cross-sectional diameter of the first segment is smaller than that of the second segment, the diameter of the first through hole is smaller than that of the second segment, and the diameter of the notch is smaller than that of the second segment but larger than that of the first segment.

8. The connection structure as described in claim 7, characterized in that, The locking component further includes a third section, which is connected to the end of the second section opposite to the first section, and the cross-sectional diameter of the third section is larger than the diameter of the second through hole; And / or, the locking member further includes a fourth segment, which is connected to the end of the first segment opposite to the second segment, and the cross-sectional diameter of the fourth segment is larger than the diameter of the notch.

9. The connection structure as described in any one of claims 1 to 8, characterized in that, The second light-passing hole includes a first part and a second part. A limiting platform is formed at the connection between the sidewall of the first part and the sidewall of the second part. The connector is provided with an abutment platform. In the connected state, the connector extends into the first part and abuts against the limiting platform. The abutment platform abuts against the end face of the connector.

10. A therapeutic device, characterized in that, The therapeutic device includes a handpiece, a light guide arm, and a connection structure as described in any one of claims 1 to 9, wherein the handpiece is provided with the connector, and the light guide arm is provided with the joint.

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