A buckle assembly and an endoscope kit

Abstract

This application provides a snap-fit ​​assembly and an endoscope kit, relating to the field of medical device technology. The application includes a clamp, which is disposed on a daughter endoscope or a mother endoscope. The clamp has a pair of opposing clamping portions, forming a clamping space between them. The clamping space is used to accommodate the handle of the other endoscope (daughter or mother). At least one clamping portion has a recess on its inner side, and the edge of the recess has at least two contact points for abutting against the outer wall of the corresponding handle. During the process of the handle moving from the opening of the clamping space into the clamping space, a portion of the handle's wall surface can extend into the recess. Compared with the prior art, by providing a recess on the clamping portion, this application allows a portion of the handle's wall surface to extend into the recess for accommodation and avoidance during the movement of the handle into the clamping space. This helps reduce the risk of plastic deformation or fatigue damage to the clamping portion during repeated assembly and disassembly, and also reduces the risk of the handle being pinched.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a snap-fit ​​assembly and an endoscope kit. Background Technology

[0002] In recent years, the master-daughter endoscopic system has been widely used for observation and treatment within the bile ducts and pancreatic ducts. This system uses a duodenoscope as the master endoscope and a choledochoscope as the daughter endoscope. The daughter endoscope is inserted into the body through the instrument channel of the master endoscope, and the two work together. During surgery, once the master endoscope reaches the vicinity of the bile duct, it usually needs to maintain a relatively fixed position. Therefore, the daughter and master endoscopes must maintain reliable relative fixation so that the surgeon can simultaneously operate both endoscopes with one hand.

[0003] Currently, in clinical practice, clamping devices similar to U-shaped clips are often used to connect and fix the two. However, the inventors discovered that during repeated installation and use, the spread-out clips were damaged. Summary of the Invention

[0004] The purpose of this application is to provide a snap-fit ​​assembly and an endoscope kit to solve the aforementioned technical problems existing in the prior art.

[0005] In a first aspect, a snap-fit ​​assembly is provided for connecting a daughter endoscope to a mother endoscope. The snap-fit ​​assembly includes a clamping seat disposed on either the daughter endoscope or the mother endoscope. The clamping seat has a pair of opposing clamping portions forming a clamping space between the pair of clamping portions. The clamping space is used to accommodate the handle of the other of the daughter endoscope and the mother endoscope. At least one of the clamping portions has a recessed portion on its inner side, and the edge of the recessed portion has at least two contact points for abutting against the outer wall of the corresponding handle. During the movement of the handle from the opening of the clamping space into the clamping space, a portion of the wall surface of the handle can extend into the recessed portion.

[0006] Secondly, embodiments of this application provide an endoscope kit, including a daughter endoscope, a mother endoscope, and a snap-fit ​​assembly as described in any of the above solutions, wherein the daughter endoscope is connected to the mother endoscope via the snap-fit ​​assembly.

[0007] This application has the following advantages and beneficial effects: This application embodiment provides a recessed portion on the inner side of the clamping portion, and forms at least two contact positions on the edge of the recessed portion, so that when the handle moves into the clamping space, part of the wall surface of the handle can extend into the recessed portion, thereby providing a partial clearance space for the handle.

[0008] Thus, in the area corresponding to the recess, the resistance force between the handle and the clamping part decreases, the load borne by the corresponding position of the clamping part decreases, and the bending internal force and internal stress transmitted inside the clamping part decrease accordingly.

[0009] Meanwhile, as the handle gradually moves into the clamping space, the local clearance space continuously releases the handle's opening effect on the clamping part. The handle does not continuously push the clamping part outwards with its entire outer wall; instead, multiple contact points gradually provide support, making the increase in the clamping part's opening more gradual and reducing the maximum opening. This alleviates stress concentration at the free end. Therefore, it reduces the risk of plastic deformation, fatigue damage, and decreased clamping force caused by repeated elastic opening and closing of the clamping part, and ensures that the latching assembly maintains stable clamping performance over the long term. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this application 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a three-dimensional schematic diagram of the sub-endoscope and latching assembly provided in the embodiments of this application.

[0012] Figure 2 This is a side view schematic diagram of the sub-endoscope and latching assembly provided in the embodiments of this application.

[0013] Figure 3 This is a schematic diagram showing the state of the daughter endoscope connected to the mother endoscope according to an embodiment of this application.

[0014] Figure 4 This is a schematic diagram showing the state of the handle of the endoscope provided in this application being held in the clamping space.

[0015] Figure 5 yes Figure 4 Enlarged view of part A in the middle.

[0016] Figure 6 This is a schematic diagram of the structure of the roller provided in the embodiment of this application.

[0017] Figure 7 This is an exploded disassembly diagram of the snap-fit ​​assembly and sub-endoscope provided in the embodiments of this application.

[0018] The diagram is marked as follows: 100. Sub-endoscope; 200, clamp; 210, clamping part; 210a, clamping space; 211, clamping plate; 2111, free end; 2112, mounting hole; 2113, movement clearance; 300. Roller; 301. Shaft; 310. Recess; 320. Protrusion; 321. Contact point; 322. Cavity; 400, Positioning Block; 500. Coverings; 510. Bandages; 600. Maternal endoscope. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] In the various embodiments of this application, "near end" and "far end" refer to the distance of each component from the user in the usage environment. The end closer to the user is designated as the "near end", and the end farther from the user is designated as the "far end".

[0021] Firstly, the mother-daughter endoscopic system is an endoscopic system that uses a mother endoscope and a daughter endoscope in conjunction. It is currently widely used for observation, diagnosis, and treatment in narrow cavities such as the bile duct and pancreatic duct. The mother endoscope is usually a duodenoscope, used to establish an access channel to the bile duct or pancreatic duct; the daughter endoscope is usually a choledochoscope, which extends into the bile duct or pancreatic duct through the instrument channel of the mother endoscope to achieve further observation and treatment of the lesion.

[0022] During the procedure, once the mother endoscope reaches the vicinity of the bile duct, it usually remains in a relatively fixed position. The surgeon mainly completes subsequent operations by manipulating the daughter endoscope. Therefore, it is necessary to use connecting structures such as snap-fit ​​components to reliably connect the handles of the mother and daughter endoscopes, so that the two maintain a stable relative position. This allows the surgeon to operate both endoscopes simultaneously with one hand, improving operational coordination and observation stability.

[0023] While researching existing snap-fit ​​components (similar to U-clamps) used in mother-and-child endoscope systems, the inventors discovered that these components typically rely on the elastic opening of the clamping part to assemble the handle. During the process of pressing the handle into the clamping space, the free end of the clamping part abuts against the outer wall of the handle, forming a rigid contact with significant tension. This results in the clamping part experiencing considerable expansion stress during continuous opening. After repeated installation and disassembly, the clamping part is prone to plastic deformation or fatigue damage, thus affecting the clamping reliability and service life of the snap-fit ​​component.

[0024] Based on the above findings, the inventors improved the clamping structure of the buckle assembly. By optimizing the contact method between the clamping part and the handle, the force on the clamping part during the assembly of the handle is reduced while ensuring a reliable connection between the female endoscope and the daughter endoscope. This reduces the risk of plastic deformation or fatigue damage to the clamping part due to repeated use, thus forming the technical solution of this application.

[0025] In view of this, the following will be combined with Figures 1 to 7 The present application provides a detailed description of a snap-fit ​​assembly and endoscope kit through specific embodiments and application scenarios.

[0026] A snap-fit ​​assembly is provided for connecting a daughter endoscope 100 to a mother endoscope 600. As described in the background section, in a mother-daughter endoscopic system, the mother endoscope 600 is typically kept relatively fixed, while the daughter endoscope 100 requires continuous observation, diagnosis, or treatment. Therefore, a snap-fit ​​assembly is needed to connect and secure the handles of both endoscopes, allowing the operator to coordinate and operate both endoscopes with one hand, improving operational coordination and observation stability.

[0027] In its specific structure, the snap-fit ​​assembly can be installed on either the daughter endoscope 100 or the mother endoscope 600, and form a detachable connection with the handle of the other, enabling quick connection and separation between the two endoscopes. Of course, it is not excluded that the overall size, clamping position, installation direction, and clamping space 210a of the snap-fit ​​assembly can be adaptively adjusted according to the structural dimensions, handle shape, and installation requirements of different models of mother-daughter endoscopes.

[0028] For example, for mother-and-child endoscopes of different brands or specifications, they can be adapted by changing the spacing between the clamping parts 210, the width of the clamping space 210a, or the installation position of the clamp 200, without changing the basic structural principle of this application, and all of these fall within the protection scope of this application.

[0029] It should be noted that the attached diagram shows the snap-fit ​​assembly installed on the daughter endoscope 100 and directly snapped onto the distal (front) end of the handle of the mother endoscope 600. With this installation method, the snap-fit ​​assembly can move synchronously with the daughter endoscope 100. When the daughter endoscope 100 is inserted into or removed from the mother endoscope 600, installation and removal can be completed without modifying the mother endoscope 600, facilitating clinical use. This is because the mother endoscope 600 is usually used alone as a general-purpose device. If the snap-fit ​​assembly is installed for a long period, it may occupy the operating space on the handle, affecting the grip comfort and the use of some operating parts when the mother endoscope 600 is used independently. Therefore, in this embodiment, it is preferable to install the snap-fit ​​assembly on the daughter endoscope 100.

[0030] Of course, the above installation methods are merely examples and do not constitute limitations. In other embodiments, the snap-fit ​​assembly can also be fixedly installed on the female endoscope 600, with the handle of the female endoscope 100 held by the clamping space 210a; or, the snap-fit ​​assembly can be designed as a universal structure that can be installed on both the female endoscope 600 and the female endoscope 100 to meet the installation needs of different clinical usage habits and different models of endoscopes. Furthermore, the snap-fit ​​assembly and the corresponding endoscope can be connected either detachably or fixedly, and the specific installation method can be selected according to the product design requirements.

[0031] In this embodiment, the buckle assembly includes a clamping seat 200, which is U-shaped in general. It includes a base plate and a pair of clamping plates 211 respectively connected to both sides of the base plate. The pair of clamping plates 211 are arranged at intervals to each other and form a clamping space 210a.

[0032] The base plate is used for mounting and fixing the female endoscope 100. The clamping plate 211 extends from both sides of the base plate in the same direction to form an open clamping structure for accommodating the handle of the female endoscope 600. The clamping plate 211 is a plate with a certain degree of elasticity. Its elastic restoring force can come from the elastic deformation of the clamping plate 211 itself, or from the elastic deformation formed at the connection between the clamping plate 211 and the base plate. For example, the restoring force can be provided by a thinning structure, an arc transition structure, a hollow structure, or other connection structures with elastic deformation capabilities. Of course, it can also be used in conjunction with elastic elements to provide auxiliary clamping force, as long as the clamping plate 211 can open outward when the handle is pressed in and return to the clamping state after the handle enters the clamping space 210a.

[0033] A clamping space 210a is formed between a pair of clamping plates 211 (i.e., clamping portions 210), which is used to accommodate the handle of the female endoscope 600. In different embodiments, the clamping space 210a is preferably an arc or U-shaped contour that conforms to the outer contour of the handle of the female endoscope 600. It can also be designed as an arc, ellipse or other irregular contour according to the shape of the handle of different models of female endoscopes 600, so as to improve the clamping fit and clamping stability. The opening of the clamping space 210a faces the entry direction of the handle of the female endoscope 600, so that the handle can be pressed into the clamping space 210a along the opening direction and clamped.

[0034] The clamp 200 can be positioned on the side wall, back, top, or other location of the daughter endoscope 100 handle that does not interfere with the operator's normal grip and operation, with the clamping space 210a facing the direction of the mother endoscope 600 handle. In this embodiment, the clamp 200 is positioned at the proximal (rear end) of the daughter endoscope 100 handle, and the clamping space 210a faces the mother endoscope 600 handle, so that when the daughter endoscope 100 approaches the mother endoscope 600, the mother endoscope 600 handle can be directly pressed into the clamping space 210a for quick connection.

[0035] Of course, the installation position and angle of the clamp 200 can also be adjusted according to the relative position of the two endoscopes during actual use, so that the opening of the clamping space 210a always faces the entry direction of the handle of the female endoscope 600, thereby reducing the position adjustment during assembly and improving the connection efficiency.

[0036] In different embodiments, the single-sided clamping plate 211 can also be formed by combining multiple plates, such as two or more plates spaced apart along the length or width direction, with each plate forming a corresponding clamping part 210, so as to adjust the local elasticity and force distribution according to the clamping requirements. In addition, the shape of the clamping plate 211 is not limited to a flat plate, but can also be an arc plate, a bent plate, a wave shape, or other structures that can form a clamping space 210a and provide clamping force, as long as it can realize the clamping and elastic opening and resetting functions of the endoscope 600 handle, all of which are within the protection scope of this application.

[0037] The clamp 200 can be a single integrated structure, formed by injection molding, die casting, or machining, or it can be assembled from multiple parts. Specifically, the clamp 200 can be made of plastic, metal, composite materials, or other materials with a certain degree of rigidity and elasticity. For example, engineering plastics such as polyoxymethylene (POM), polyamide (PA), and polycarbonate (PC) can be used to balance weight, elasticity, and wear resistance; metal materials such as stainless steel, aluminum alloy, and titanium alloy can be used to improve overall strength and durability; a composite structure formed by a metal frame and plastic overlay can also be used to balance structural strength and clamping comfort. Of course, the above materials are merely examples and are not limited to these.

[0038] In some embodiments, the two clamping portions 210 (i.e., clamping plates 211) can be arranged symmetrically, or asymmetrically according to the outer contour of the handle of the female endoscope 600 or the female endoscope 100. For example, the length of one clamping portion 210 is greater than that of the other clamping portion 210, or the curvature of the two clamping portions 210 is different, to adapt to handles with irregular shapes. The clamping space 210a can be U-shaped, C-shaped, arc-shaped, elliptical, or other opening structures that can accommodate the handle. Its cross-sectional shape can also be designed as circular, elliptical, racetrack-shaped, or irregular contours according to the shape of the handle to improve the clamping fit.

[0039] The pair of clamping parts 210 can open and close using the elasticity of the material itself, or they can work with an elastic element to provide clamping force. For example, the elastic element can be a torsion spring, compression spring, tension spring, sheet spring, elastic rubber element, or other structure with restoring force, so that the clamping parts 210 can open outward during the pressing of the handle and automatically return to their original position after the handle enters the clamping space 210a, so as to continuously apply clamping force to the handle. Regardless of the method used, as long as the handle can be stably accommodated in the clamping space 210a and a reliable connection is maintained between the female endoscope 600 and the female endoscope 100, it falls within the protection scope of this application.

[0040] As an optional embodiment, at least one clamping part 210 has a recessed portion 310 on its inner side. In different embodiments, only one clamping part 210 has a recessed portion 310, while the other clamping part 210 can maintain a normal clamping surface structure, and the handle is clamped by the cooperation of the two clamping parts 210.

[0041] Of course, depending on different clamping requirements, recesses 310 can be provided on the inner sides of the two clamping parts 210 respectively, so that local clearance space is formed on both sides, thereby further reducing the overall force on the clamping parts 210 during the handle assembly process.

[0042] In a specific embodiment, the recessed portion 310 can be disposed near the free end 2111, in the middle, or on the side close to the clamping seat 200 along the length direction of the clamping portion 210. Its specific placement position can be adjusted according to the force position when the handle enters the clamping space 210a, so that the recessed portion 310 corresponds to the area with greater force during the pressing of the handle, so as to obtain a better avoidance effect.

[0043] The edge of the recess 310 has at least two contact points 321, which are used to abut against the outer wall of the corresponding handle. For example, one recess 310 may form two contact points 321; or two or more recesses 310 may be provided, with one or more contact points 321 formed between adjacent recesses 310, such as three contact points 321 formed between two recesses 310, four contact points 321 formed between three recesses 310, and so on.

[0044] Multiple contact points 321 can be distributed sequentially along the handle entry direction, or they can be distributed at intervals along the length, width, or circumferential direction of the clamping part 210. The specific arrangement can be designed according to the outer wall contour of the handle. The recessed part 310 can form a partial clearance space, so that when the handle enters the clamping space 210a, part of its corresponding outer wall can enter the recessed part 310, instead of forming partial contact with the inner side of the clamping part 210. This changes the traditional overall force-bearing mode of the clamping part 210, and gradually changes the surface contact between the clamping part 210 and the handle to the partial contact formed by multiple contact points 321.

[0045] It is worth noting that during the process of the handle moving from the opening of the clamping space 210a into the clamping space 210a, the contact relationship between the handle and the clamping part 210 is not formed all at once, but changes gradually. Specifically, when the handle just enters the clamping space 210a, the outer wall of the handle first contacts the contact position 321 near the opening of the clamping space 210a, at which point the clamping part 210 begins to elastically open outward; as the handle continues to move into the clamping space 210a, the corresponding part of the outer wall of the handle gradually enters the recessed part 310, and the position that might have formed local compression becomes a local avoidance state, so that the opening of the clamping part 210 is relieved, and the clamping part 210 does not need to continuously bear the opening effect generated by the entire outer wall of the handle; Subsequently, as the handle is further pressed in, the outer wall of the handle continues to contact the contact point 321 located on the other side of the recess 310, and finally, multiple contact points 321 together abut against the outer wall of the handle, so that the handle is stably held within the clamping space 210a. In other words, during the entire assembly process, the contact state between the handle and the clamping part 210 successively goes through three stages: initial contact, partial avoidance, and multi-line stable support, so that the force on the clamping part 210 changes from traditional local continuous compression to gradual, multi-point force. In this way, not only can the instantaneous opening amplitude of the clamping part 210 be reduced, but the maximum opening stress of the clamping part 210 during the entire assembly process can also be reduced, thereby reducing the risk of plastic deformation or fatigue damage to the clamping part 210 due to repeated installation and disassembly.

[0046] Furthermore, the recessed portion 310 can be a groove-like structure formed by recessing into the outer side of the clamping portion 210. Its cross-section can be circular arc, elliptical arc, V-shape, U-shape, trapezoid, or other shapes that can create a local clearance space. Among them, using a circular arc or elliptical arc shape helps to reduce the transition resistance when the handle enters the recessed portion 310, making the handle entry process smoother; using a V-shape or trapezoidal shape can create different degrees of clearance space according to different handle shapes. Of course, the depth, width, and length of the recessed portion 310 can be adjusted according to the outer diameter of the handle, the thickness of the clamping portion 210, and the required clamping force, as long as part of the handle wall can enter the recessed portion 310, and are not limited to specific dimensions.

[0047] As an optional embodiment, the contact points 321 are preferably distributed on the protrusions 320 at the edge of the recess 310. The multiple contact points 321 together form support and positioning with the handle to ensure clamping stability. The multiple contact points 321 can be formed continuously or spaced apart from each other; they can have the same contact width or different contact widths.

[0048] For example, the contact position 321 near the opening of the clamping space 210a can have a wider contact width to improve the stability of the handle during initial insertion; the contact position 321 near the interior of the clamping space 210a can have a narrower contact width to further reduce local contact stress. Of course, the number of contact positions 321 can be two, three, four, or more, and the specific position, size, and spacing of the contact positions 321 can be adjusted according to the contour of the handle's outer wall to accommodate handles of different specifications of the female endoscope 600 or female endoscope 100.

[0049] In different embodiments, when the handle is accommodated in the clamping space 210a, each contact point 321 abuts against the outer wall of the handle, and there is a gap between the bottom surface of the recess 310 and the outer wall of the handle. This gap preferably exists continuously along most of the area of ​​the recess 310, or it may be provided only in a local area of ​​the recess 310, and its specific size can be designed according to the elastic deformation of the clamping part 210.

[0050] Since the bottom surface of the recessed portion 310 does not directly participate in clamping, the clamping force is mainly provided by multiple contact points 321. The bottom surface of the recessed portion 310 is mainly used to provide clearance space, so that the handle remains separated from the bottom surface of the recessed portion 310 when clamped, thereby avoiding excessive expansion stress on the clamping portion 210 due to the overall pressure of the handle. At the same time, the multiple contact points 321 can distribute the clamping load to different positions, making the local force on the clamping portion 210 more uniform, which helps to reduce local stress concentration and improve the durability and repeated assembly and disassembly performance of the clamping portion 210.

[0051] The size of the gap can be determined by comprehensively considering the outer diameter of the handle, the clamping force, the elastic modulus of the material of the clamping part 210, and the dimensions of the recess 310. This ensures that the handle can appropriately extend into the recess 310 while maintaining clamping reliability, thus achieving a better avoidance effect. In this way, during long-term repeated installation and disassembly, a stable clamping force can be maintained, and the possibility of permanent deformation or fatigue failure of the clamping part 210 can be reduced.

[0052] In a preferred embodiment, a roller 300 is rotatably mounted on the clamping part 210, and a recess 310 is provided on the outer wall of the roller 300. The roller 300 can rotate freely relative to the clamping part 210. When the handle is pressed into the clamping space 210a, the roller 300 can roll under the drive of the outer wall of the handle, so that the recess 310 automatically rotates to the position corresponding to the handle, thereby allowing a part of the handle wall surface to enter the recess 310.

[0053] Compared to the recessed portion 310 fixedly mounted on the clamping portion 210, the roller 300 does not require pre-adjustment of the orientation of the recessed portion 310. When the handle is pressed into the clamping space 210a from different directions or angles, the roller 300 can automatically rotate during the contact process, causing the recessed portion 310 to actively rotate to the corresponding position of the handle. Therefore, it can adapt to different installation postures and different operating habits, and improve the smoothness of the clamping process.

[0054] Meanwhile, since the roller 300 and the handle mainly form rolling contact rather than sliding contact, the sliding friction between the roller 300 and the handle can be significantly reduced, the resistance when the handle is pressed into the clamping space 210a can be reduced, the wear on the outer wall of the handle and the surface of the clamping part 210 can be reduced, and the installation efficiency and repeated assembly and disassembly performance can be improved.

[0055] Furthermore, the combination of the roller 300 and the recessed portion 310 not only reduces friction, but more importantly, enables dynamic adjustment of the local avoidance position. Specifically, when the handle first contacts the roller 300, the roller 300 first rolls under the push of the handle. At this time, the contact position 321 between the handle and the roller 300 changes continuously, and the recessed portion 310 also rotates synchronously with the roller 300.

[0056] As the roller 300 continues to rotate to the predetermined angle, the recessed portion 310 gradually aligns with a portion of the outer wall of the handle, allowing that portion of the outer wall to naturally enter the recessed portion 310, thus completing local avoidance. Throughout the process, the position of the recessed portion 310 is not fixed, but actively seeks a position corresponding to the handle as the roller 300 rotates. Therefore, it avoids the problem of reduced avoidance effect due to initial position deviation of the recessed portion 310, ensuring that the handle achieves good local avoidance effect throughout the entire pressing process.

[0057] Furthermore, during the rolling process of the roller 300, the contact position 321 and the handle form a continuously changing contact relationship, rather than a continuous friction at a fixed position. As the roller 300 rotates continuously, each contact position 321 contacts the handle in sequence and then gradually disengages, causing the contact area to continuously shift along the outer wall of the roller 300.

[0058] Therefore, the clamping load will not be concentrated on a single local location of the roller 300 for a long period of time, but will be distributed to different areas around the roller 300. This helps to reduce local contact stress and local wear, and improves the overall durability of the roller 300. At the same time, since the recessed portion 310 can continuously adjust its position with the roller 300, the opening process of the clamping portion 210 is smoother, avoiding large instantaneous expansion stress caused by sudden local pressure, making the entire assembly process more stable.

[0059] Compared to the design where a regular roller 300 is only provided at the free end 2111 of the clamping portion 210, this embodiment of the application provides a recessed portion 310 on the outer wall of the roller 300, so that the roller 300 has both rolling guidance and partial avoidance functions. Although the regular roller 300 can reduce frictional resistance, the outer wall of the roller 300 is always a continuous outer circular surface. During the continuous pressing of the handle, it will still press against the clamping portion 210 as a whole, keeping the clamping portion 210 in a large open state.

[0060] In this design, when the roller 300 rotates to the corresponding position, the local wall surface of the handle can enter the recess 310, so that the outer wall of the roller 300 no longer continuously supports the handle as a whole, but is partially supported by multiple contact points 321. Therefore, while reducing rolling friction, it can also further reduce the opening amount and spreading stress of the clamping part 210. In other words, this design not only reduces frictional resistance but also reduces structural stress. The two effects work together to make the installation process easier and reduce the risk of plastic deformation or fatigue damage to the clamping part 210 due to repeated stress. Therefore, compared with the design of directly rotating and setting the ordinary roller 300, it has a more significant technical effect.

[0061] Specifically, multiple recesses 310 are provided on the circumferential direction of the outer wall of the roller 300, and protrusions 320 are formed between adjacent recesses 310. The contact position 321 is located on the protrusions 320, and the multiple protrusions 320 form a petal-like shape on the outer circumferential wall of the roller 300. The multiple recesses 310 are preferably evenly spaced along the circumference of the roller 300, so that the dimensions of adjacent protrusions 320 are basically the same, thereby ensuring that the roller 300 has basically consistent force characteristics at each circumferential position.

[0062] Of course, recesses 310 of different sizes or spacings can be provided according to actual needs to accommodate handles of different shapes. Since the roller 300 can rotate continuously, multiple recesses 310 can ensure that no matter what angle the roller 300 is initially at, after the handle pushes the roller 300 to rotate, one of the recesses 310 can quickly rotate to the corresponding position on the handle, without limiting the initial installation angle of the roller 300, thus improving the adaptability of the roller 300 to different installation postures and different usage states.

[0063] Meanwhile, multiple protrusions 320 are alternately distributed along the circumference of the roller 300, so that multiple contact positions 321 can be formed in each circumferential area of ​​the roller 300. While ensuring clamping stability, the overall force on the roller 300 is more uniform, which also helps to reduce local wear and local fatigue of the roller 300.

[0064] As an optional embodiment, the recess 310 extends along a straight line, curve, oblique line, or spiral direction on the outer wall of the roller 300. Different extension methods can correspond to different contact characteristics and rolling effects. For example, extending along a straight line facilitates manufacturing and can form a more uniform contact state; when extending along a curve, the process of the handle entering the recess 310 is smoother, which can reduce contact impact; when extending along an oblique line or spiral direction, as the roller 300 rotates continuously, the position of the recess 310 corresponding to the handle not only changes circumferentially, but also gradually changes along the axial direction of the roller 300, so that the contact position 321 transitions continuously, improving the adaptability of the roller 300 to different pressing angles and different handle profiles.

[0065] Furthermore, the spiral recess 310 can also provide a certain guiding effect for the roller 300 during rolling, allowing the handle to enter the clamping space 210a more smoothly. In practical applications, the appropriate extension form can be selected according to the size of the roller 300, the processing method, the expected rolling direction, and the clamping requirements, or multiple extension forms can be combined.

[0066] In a preferred embodiment, a cavity 322 is formed on the protrusion 320 along the axial direction, so that the protrusion 320 forms an elastic plate structure. The cavity 322 can penetrate the protrusion 320, or it can be a non-penetrating groove structure. Its specific shape can be strip-shaped, elliptical, rectangular, waist-shaped, array of circular holes, or other structures that can reduce local stiffness.

[0067] For example, the cavity 322 can be located in the middle of the protrusion 320 or offset to one side of the contact position 321, as long as the protrusion 320 has a certain degree of elasticity. When the contact position 321 is squeezed by the handle, the protrusion 320 can undergo a certain degree of elastic deformation, allowing the contact position 321 to better fit against the outer wall of the handle, thereby further reducing local contact stress and improving clamping stability.

[0068] Meanwhile, the flexible plate structure can also compensate for the size differences between handles of different specifications. Even if there are certain manufacturing tolerances or slight wear on the outer wall of the handle, the multiple contact points 321 can still maintain a good fit, improving the compatibility range of the buckle assembly.

[0069] In this embodiment, the roller 300 is rotatably disposed at the free end 2111 of the clamping part 210. Since the free end 2111 is the first contact point when the handle enters the clamping space 210a, placing the roller 300 at the free end 2111 allows the handle to contact the roller 300 initially upon entering the clamping space 210a. The roller 300 then acts as a guide, guiding the handle along a predetermined path into the clamping space 210a. As the handle continues to be pressed in, the roller 300 continues to roll, gradually aligning the recessed portion 310 with the outer wall of the handle, thus completing the transition from rolling guidance to partial avoidance, making the entire assembly process continuous and smooth. Simultaneously, the rolling contact between the free end 2111 and the handle replaces sliding friction, reducing wear on the free end 2111 and increasing the service life of the clamping part 210 and the roller 300.

[0070] As an optional embodiment, there is a movable gap 2113 between the rotating shaft 301 of the roller 300 and the mounting hole 2112 of the clamping part 210. The movable gap 2113 allows the roller 300 to not only rotate around the rotating shaft 301, but also to float within a certain range radially or axially along the mounting hole 2112. This allows the roller 300 to automatically adjust its position according to the force applied during the handle pressing process, ensuring that the roller 300 always fits well against the outer wall of the handle and improving the contact consistency between the multiple contact points 321 and the handle.

[0071] As an optional embodiment, the axial direction of the roller 300 is parallel to the axial direction of the clamping space 210a. This arrangement allows the roller 300 to roll along the handle pressing direction, and the rotation direction of the roller 300 is adapted to the handle entering direction, resulting in lower rolling resistance of the roller 300. At the same time, it facilitates the alignment of the recessed portion 310 with the outer wall of the handle in the circumference of the roller 300, improving the rolling stability of the roller 300 and the automatic alignment capability of the recessed portion 310.

[0072] Of course, in some embodiments, the axial direction of the roller 300 can also be adaptively adjusted according to the specific shape of the clamping space 210a, as long as the above-mentioned rolling guidance and local avoidance functions can be achieved.

[0073] In some embodiments, the clamp 200 is detachably connected to the handle of the sub-endoscope 100. The detachable connection method can be a snap-fit ​​connection, threaded connection, clamp connection, cable tie connection, strap connection, or other connection methods that enable installation and removal, so as to replace, maintain, or reuse the sub-endoscope 100 according to different models.

[0074] Of course, the clamp 200 can also be fixedly mounted on the mother endoscope 600 as needed, and the handle of the daughter endoscope 100 can be clamped by the clamping space 210a. The connection principle is basically the same as the above-described embodiment. In addition, the clamp 200 can adopt different specifications or different installation structures according to the handle size of different models of endoscopes, so as to improve the versatility and adaptability of the buckling assembly, and make the same clamping structure applicable to multiple models of mother-daughter endoscope systems.

[0075] In this embodiment, a positioning block 400 is fixed on the handle of the sub-endoscope 100, and the base plate of the clamp 200 can be inserted and fixed on the positioning block 400 to achieve quick installation and reliable positioning between the clamp 200 and the sub-endoscope 100.

[0076] Preferably, the positioning block 400 is fixed to the side wall or back of the handle of the daughter endoscope 100, so that the clamping space 210a faces the direction of the handle of the mother endoscope 600. Of course, the installation position of the positioning block 400 can also be adjusted according to the specific structure of the handle of the daughter endoscope 100, as long as it does not affect the operator's normal grip and operation of various function buttons, knobs or control components.

[0077] The positioning block 400 can be dovetail-shaped, T-shaped, convex, slider-shaped, or other structures with guiding and limiting functions. The clamp 200 is correspondingly provided with an insertion groove that mates with the positioning block 400. During installation, the clamp 200 slides and inserts along the extension direction of the positioning block 400, allowing the positioning block 400 to gradually enter the insertion groove. After insertion, a hook is used to limit and fix it, preventing the clamp 200 from detaching itself along the insertion direction.

[0078] The latch can be set on the clamp 200 or the positioning block 400, and locking can be achieved by elastic snap-fit; of course, button unlocking, paddle unlocking or other release mechanisms can also be used so that the clamp 200 can be quickly disassembled as needed.

[0079] Of course, to prevent the clamp 200 from shaking during the force process, the positioning block 400 and the insertion slot preferably form a surface contact fit, so that the clamp 200 is restricted in the up and down and left and right directions except for the insertion direction, thereby improving the overall stability and anti-sway capability of the clamp 200 after installation.

[0080] Furthermore, auxiliary positioning structures such as positioning protrusions, positioning grooves, positioning holes, limiting shoulders, or stops can be provided between the positioning block 400 and the clamping seat 200 to further improve the consistency of the installation position of the clamping seat 200, ensuring that the clamping space 210a always maintains the predetermined orientation, thereby guaranteeing that the handle of the female endoscope 600 can smoothly enter the clamping space 210a. Of course, the above positioning structures can be set individually or in combination, and their specific structural forms are not limited.

[0081] In this embodiment, when the clamp 200 is in its initial state, i.e., before the endoscope 600 handle is engaged, the free ends 2111 of the pair of clamping parts 210 are positioned close to each other, and the clamping space 210a remains in its initial clamping state. Preferably, a preset clamping distance is formed between the pair of clamping parts 210, such that the opening width of the clamping space 210a is smaller than the maximum outer diameter of the endoscope 600 handle at the corresponding position. When the endoscope 600 handle is pressed into the clamping space 210a, the handle first pushes the pair of clamping parts 210 to elastically open outward; as the handle continues to enter the clamping space 210a, the clamping parts 210 continue to undergo elastic deformation; after the handle enters the predetermined clamping position, the clamping parts 210 recover their elasticity, causing the multiple contact points 321 to re-abut against the outer wall of the handle, thereby forming a stable clamping.

[0082] Since the clamping force comes from the elastic recovery of the clamping part 210, quick installation and disassembly can be completed without the need for an additional locking mechanism, which helps to improve the efficiency of intraoperative assembly. At the same time, even if the surgeon needs to temporarily remove the sub-endoscope 100, the clamping can be released simply by applying external force in the direction of the opening, making the operation relatively convenient.

[0083] As an optional embodiment, a covering member 500 is provided at the clamping space 210a. The covering member 500 is used to cover and conform to the outer wall of the endoscope 600 handle when it is inserted into the clamping space 210a. The covering member 500 is preferably located at the opening of the clamping space 210a or on the side close to the opening, so that the endoscope 600 handle first contacts the covering member 500 during the process of entering the clamping space 210a, and then gradually enters the interior of the clamping space 210a, thereby forming a flexible transition.

[0084] The cover 500 further increases the clamping area, improves clamping stability, reduces local contact pressure, and minimizes wear or indentations on the handle's outer wall caused by long-term clamping. Simultaneously, the cover 500 fills part of the gap between the handle and the clamping space 210a, ensuring a good fit for handles of different outer diameters and improving the compatibility of the latching assembly with different models of female endoscopes 600. The cover 500 can be made of flexible materials such as rubber, silicone, elastomers, or fabrics, or it can be made of composite materials with a certain coefficient of friction to improve clamping anti-slip performance.

[0085] In this embodiment, the covering 500 includes a bandage 510, with both ends of the bandage 510 respectively disposed on a pair of clamping portions 210, and the bandage 510 is disposed facing the opening of the clamping space 210a. The bandage 510 can be fixedly connected to the clamping portion 210 or detachably connected to the clamping portion 210 so as to be replaced according to wear.

[0086] When the endoscope 600 handle is pressed into the clamping space 210a, the handle first pushes the bandage 510 to undergo elastic deformation. The bandage 510 then gradually adheres to and covers the outer wall of the handle to form an auxiliary clamping effect. After the handle is fully inserted into the clamping space 210a, the bandage 510 continues to adhere tightly to the outer wall of the handle under its own elastic recovery, forming a clamping structure together with multiple contact points 321.

[0087] In its specific structure, the bandage 510 can be made of elastic webbing, silicone tape, rubber tape, or other flexible materials. Its width, thickness, length, and elastic modulus can all be selected according to the handle size and clamping requirements. The bandage 510 not only further improves clamping stability but also provides flexible protection for the outer wall of the handle, reducing wear caused by direct contact with hard parts. It also facilitates adaptation to handles of different outer diameters, improving the versatility of the buckle assembly.

[0088] Furthermore, the bandage 510 remains under tension after the handle enters the clamping space 210a. Therefore, the bandage 510 continuously applies a pulling force to the pair of clamping parts 210, causing them to consistently tend to clamp towards the handle of the endoscope 600. In other words, the bandage 510 not only provides coverage but also serves as an auxiliary clamping structure, contributing to the formation of clamping force and creating a composite clamping method that combines rigid clamping with flexible tension between the clamping parts 210 and the handle of the endoscope 600.

[0089] The clamping part 210 provides primary support and positioning, while the bandage 510 provides continuous flexible pre-tension. Together, they further enhance the anti-shaking and anti-dislodgement capabilities of the latching assembly. When the female endoscope 600 is subjected to operating forces, vibrations, or slight swaying, the bandage 510 can continuously compensate for the clamping gap through its own elasticity, ensuring that the handle remains in a stable clamping state, thereby further improving the reliability of the connection between the female endoscope 600 and the female endoscope 100.

[0090] It should be noted that after the handle enters the clamping space 210a, the bandage 510 preferably abuts against the bottom of the clamping space 210a and conforms to the outer wall of the handle, thereby providing support and limiting the handle towards the bottom of the clamping space 210a, reducing the handle's swaying within the clamping space 210a and improving connection stability. Of course, in other embodiments, the bandage 510 may also maintain a gap from the bottom of the clamping space 210a, abutting against the outer wall of the handle only through its own elasticity, which can also provide auxiliary clamping and anti-swaying effects for the handle. The specific setting can be selected according to the clamping requirements.

[0091] As an optional embodiment, the bandage 510 can be formed together with one side of the fixed ends of the pair of clamping parts 210 to create a clamping space 210a, and the handle of the female endoscope 600 can be inserted along the axial direction of the clamping space 210a. When the handle of the female endoscope 600 enters the clamping space 210a, the bandage 510 adheres to the outer wall of the handle under the action of elasticity, and continuously applies a tension force to the pair of clamping parts 210, so that the handle is stably kept in the clamping space 210a.

[0092] The bandage 510 provides a flexible wrap around the handle, working in conjunction with the clamping part 210 to hold and limit the handle, thereby further reducing handle wobbling and improving the stability of the connection between the female endoscope 600 and the female endoscope. Of course, the clamping space 210a formed by the bandage 510 and the clamping part 210 can also be adaptively adjusted according to the shape of the female endoscope 600 handle to accommodate handles of different sizes.

[0093] In some embodiments, this application also provides an endoscope kit, including a daughter endoscope 100, a mother endoscope 600, and a snap-fit ​​assembly as described in any of the above embodiments. The daughter endoscope 100 is detachably connected to the mother endoscope 600 via the snap-fit ​​assembly, so that the daughter endoscope 100 and the mother endoscope 600 maintain a stable relative position, which facilitates the surgeon to operate the two endoscopes with one hand, improving the convenience of clinical operation and the reliability of connection.

[0094] in, Figure 3 The female endoscope 600 shown is merely a schematic representation to illustrate the connection between the latching assembly and the female endoscope 600, and does not limit the actual structure, dimensions, or handle shape of the female endoscope 600. Similarly, the structure and shape of the female endoscope 100 can be adjusted according to the actual product, as long as it can cooperate with the aforementioned latching assembly to achieve connection and fixation, all of which fall within the protection scope of this application.

[0095] It should be noted that the endoscopes referred to in the embodiments of this application may be bronchoscopes, pyeloscopes, esophagoscopes, gastroscopes, colonoscopes, otoscopes, rhinoscopes, oral endoscopes, laryngoscopes, colposcopes, laparoscopes, arthroscopes, etc. The embodiments of this application do not specifically limit the types of endoscopes.

[0096] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application.

Claims

1. A snap-fit ​​assembly, characterized in that, For connecting a sub-endoscope (100) to a female endoscope (600), the latching assembly includes a clamp (200) disposed on either the sub-endoscope (100) or the female endoscope (600). The clamp (200) has a pair of opposing clamping portions (210), forming a clamping space (210a) between the pair of clamping portions (210). The clamping space (210a) is used to accommodate the handle of the other of the sub-endoscope (100) and the female endoscope (600); wherein: At least one of the clamping portions (210) has a recess (310) on its inner side, and the edge of the recess (310) has at least two contact positions (321) for abutting against the outer wall of the corresponding handle. During the process of the handle moving from the opening of the clamping space (210a) into the clamping space (210a), a portion of the wall surface of the handle can extend into the recess (310).

2. The snap-fit ​​assembly according to claim 1, characterized in that, When the handle is accommodated in the clamping space (210a), the contact points (321) all abut against the outer wall of the handle, and there is a gap between the bottom surface of the recess (310) and the outer wall of the handle.

3. The snap-fit ​​assembly according to claim 1 or 2, characterized in that, A roller (300) is rotatably disposed on the clamping part (210), and the recess (310) is disposed on the outer wall of the roller (300).

4. The snap-fit ​​assembly according to claim 3, characterized in that, The recessed portion (310) is provided in multiple circumferential directions on the outer wall of the roller (300), and a protrusion (320) is formed between adjacent recessed portions (310). The contact position (321) is located on the protrusion (320), and the multiple protrusions (320) form a petal-like shape on the outer peripheral wall of the roller (300). And / or, the recess (310) extends on the outer wall of the roller (300) in a straight line, curve, oblique line or spiral direction.

5. The snap-fit ​​assembly according to claim 4, characterized in that, The protrusion (320) has a cavity (322) along the axial direction so that the protrusion (320) forms an elastic plate structure.

6. The snap-fit ​​assembly according to claim 3, characterized in that, The roller (300) is rotatably disposed at the free end (2111) of the clamping part (210); And / or, there is a movable gap (2113) between the shaft (301) of the roller (300) and the mounting hole (2112) of the clamping part (210). And / or, the axial direction of the roller (300) is parallel to the axial direction of the clamping space (210a).

7. The snap-fit ​​assembly according to claim 1, characterized in that, The clamp (200) is detachably connected to the handle of the sub-endoscope (100); And / or, when the clamp (200) is in its initial state, the free ends (2111) of the pair of clamping parts (210) are arranged close to each other.

8. The snap-fit ​​assembly according to claim 1, characterized in that, A covering (500) is provided at the clamping space (210a), the covering (500) being used to cover and fit against the outer wall of the handle of the female endoscope (600) when the handle of the female endoscope (600) is inserted into the clamping space (210a).

9. The snap-fit ​​assembly according to claim 8, characterized in that, The covering (500) includes a bandage (510), with both ends of the bandage (510) respectively disposed on a pair of clamping portions (210), and the bandage (510) is disposed facing the opening of the clamping space (210a).

10. An endoscope kit, characterized in that, It includes a daughter endoscope (100), a mother endoscope (600), and a snap-fit ​​assembly as described in any one of claims 1 to 9, wherein the daughter endoscope (100) is connected to the mother endoscope (600) via the snap-fit ​​assembly.

Images