Sampling device and endoscope assembly

Abstract

The invention provides a sampling device and an endoscope assembly, and relates to the technical field of endoscopes, the sampling device comprises a sampler, the sampler is provided with a flange component, and the flange component is arranged around an endoscope handle after the sampler and the endoscope handle are assembled in place so as to assist in positioning the endoscope handle; the side, facing the endoscope handle, of the flange component is provided with a binding face, and at least one convex rib is arranged on the binding face; the sampler is provided with an insertion hole used for being in butt joint with a suction nozzle of an endoscope handle. And under the condition that the sampler and the endoscope handle are assembled in place, the convex rib is propped against the outer surface of the endoscope handle, so that the suction nozzle of the endoscope handle is propped against and fixed in the hole wall of the insertion hole. Compared with the prior art, the invention has the advantage of obviously improving the assembly reliability and connection stability between the sampler and the endoscope handle.

Description

Technical Field

[0001] This invention relates to the field of endoscopy technology, and more particularly to a sampling device and an endoscopy assembly. Background Technology

[0002] When taking samples from a patient's body, a sampling device is usually used in conjunction with an endoscope. The connecting parts of this sampling device are generally detachably attached to the endoscope handle. The endoscope's suction nozzle is inserted into the sampling interface of the sampling device, and the sampling device is connected to a negative pressure source. Under negative pressure, the target tissue sample is aspirated and collected into a sampling bottle.

[0003] In the aforementioned structure, the connecting components of existing sampling devices typically include a flange member, intended to improve connection stability through a close fit with the outer surface of the endoscope handle. However, in actual use, even with the flange member, unreliable connections still occur. Summary of the Invention

[0004] The purpose of this application is to provide a sampling device and an endoscope to solve the aforementioned technical problems existing in the prior art.

[0005] Firstly, this application provides a sampling device, which adopts the following technical solution: A sampling device for endoscopic sampling, comprising: A sampler having a flange member, the flange member being arranged around the endoscope handle after the sampler and the endoscope handle are assembled in place, to assist in positioning the endoscope handle; The flange member has a contact surface on the side facing the endoscope handle, and at least one rib is provided on the contact surface; The sampler is provided with a socket for docking the suction nozzle of the endoscope handle; wherein: When the sampler and the endoscope handle are assembled in place, the rib presses against the outer surface of the endoscope handle, causing the flange member to elastically deform in the radial direction of the insertion hole, thereby pressing and fixing the suction nozzle of the endoscope handle inside the wall of the insertion hole.

[0006] Secondly, this application provides an endoscope assembly, which adopts the following technical solution: An endoscope assembly includes the endoscope handle and the sampling device described in the above technical solution. The sampling device is detachably connected to the endoscope handle and is disposed in conjunction with the suction nozzle of the endoscope handle.

[0007] The present invention has the following advantages and beneficial effects: (1) By providing a rib on the mating surface of the flange member, and making it press against the outer surface of the endoscope handle after the sampler and endoscope handle are assembled, the flange member undergoes controlled deformation relative to the endoscope handle in the assembled state. This deformation is not limited to the local mating surface between the flange member and the outer surface of the handle, but is further transformed into a radial constraint force acting on the entire sampler, thereby forming a radial closing pressure between the sampler and the suction nozzle of the endoscope handle, so that the suction nozzle and the wall of the insertion hole always maintain a stable abutment and clamping state.

[0008] This radial clamping action can effectively suppress the risk of the sampler detaching from the endoscope handle axially or radially during the sampling process, thereby ensuring the continuity and reliability of the sampling process.

[0009] (2) Compared with the traditional method of relying on surface contact to achieve fit and positioning between the flange component and the endoscope handle, due to the accumulation of processing tolerances, assembly errors and wear generated by the flange component during repeated use, it is often difficult for the flange component and the outer surface of the handle to maintain an ideal full fit for a long time, which can easily lead to uneven contact or local loosening.

[0010] In contrast, this application incorporates ribs on the mating surface, which, after assembly, create a line contact with the outer wall of the endoscope handle, providing a pressure-bearing effect. This contact method has a lower dependence on overall mating accuracy, and even with dimensional deviations or surface wear, it can still form a stable and effective pressure point locally. This not only ensures reliable constraint of the flange component on the endoscope handle but also continuously applies a stable radial clamping force to the sampler, improving the assembly reliability of the sampler from a structural mechanism perspective and contributing to stability during the sampling process. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the overall structure of the sampler.

[0013] Figure 2 This is a structural diagram intended to illustrate a flange component.

[0014] Figure 3 yes Figure 2 Enlarged view of part A in the middle.

[0015] Figure 4 This is a schematic diagram of the sampler installed on the endoscope handle.

[0016] Figure 5 It was an explosion of the sampler and endoscope handle. Figure 1 .

[0017] Figure 6 It was an explosion of the sampler and endoscope handle. Figure 2 .

[0018] The diagram is marked as follows: 100. Sampler; 110. Sampling bottle; 120. Connecting component; 130. Valve body; 131. Negative pressure interface; 140. Flange component; 141. Fitting wall surface; 1411. Fitting surface; 150. Supporting wall surface; 151. First wall surface; 152. Second wall surface; 153. Reinforcing rib; 160. Mounting surface; 161. Insertion hole; 162. Concave cavity; 1621. Cavity wall; 163. Junction area; 1631. Rounded corner surface; 171. Rib; 1711. Abutting plane; 1712. Transition surface; 1713. Arc-shaped guide surface; 200. Endoscope handle; 210. Suction nozzle. Detailed Implementation

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

[0020] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0021] Through long-term clinical sampling practice and repeated use and disassembly of existing sampling devices, the inventors noticed a structural problem that was not easily noticed in the initial design: although existing sampling devices generally use flange members on the connecting parts and rely on the fit between the flange members and the outer surface of the endoscope handle to achieve positioning and fixation, this fit is not stable in actual use.

[0022] Further analysis revealed that this instability was not caused by a single factor, but rather by the combined effects of multiple factors, including the objective existence of manufacturing tolerances, unavoidable dimensional deviations during assembly, thermal expansion and contraction caused by changes in the usage environment, and cumulative wear and tear on the flange components during repeated assembly, disassembly, and disinfection. Under the influence of these factors, the structural method that originally relied on surface contact for fit and positioning is difficult to maintain a uniform and reliable contact state during long-term use. It is prone to insufficient fit or uneven stress in local areas, ultimately manifesting as loosening of the connection between the sampling device and the endoscope handle, and decreased stability.

[0023] Based on a systematic observation and structural mechanism analysis of the aforementioned problems, the inventors recognized that relying solely on the traditional surface-fitting method between the flange component and the endoscope handle is insufficient to fundamentally solve the assembly reliability problem. It is necessary to redesign the force and positioning methods between the sampling device and the endoscope handle. Based on this understanding, the technical solution described in the subsequent embodiments is proposed to improve the connection stability of the sampling device during actual use.

[0024] The following is combined with Figures 1 to 6 The sampling device and endoscope assembly provided in this application will be described in detail through specific embodiments and application scenarios.

[0025] A sampling device for endoscopic sampling mainly includes a sampler 100. The sampler 100 typically includes a connecting component 120 and a sampling bottle 110 detachably connected to it. The connecting component 120 is usually a housing-style design, and a valve body 130 and a negative pressure interface 131 connected to a negative pressure source are mounted on the connecting component 120. The valve body 130 controls the on / off of the negative pressure, allowing negative pressure to act inside the sampling bottle 110 when needed. This negative pressure attracts and collects the target tissue sample from the patient into the sampling bottle 110, thus achieving the tissue sampling operation.

[0026] It should be understood that the sampler 100 in this embodiment is not limited to the specific structural form described above. Its connecting component 120, valve body 130, negative pressure interface 131, and sampling bottle 110 can all be equivalently replaced or structurally adjusted according to different application scenarios. Any sampler 100 structure that can realize the endoscopic sampling function and whose connecting component 120 is provided with a flange member 140 for cooperating with the endoscope handle 200 to realize the positioning and connection between the sampler 100 and the endoscope handle 200 should be included within the protection scope of this application.

[0027] The sampler 100's connecting component 120 includes a flange member 140. After the sampler 100 and endoscope handle 200 are assembled, the flange member 140 surrounds the endoscope handle 200, thus forming a lateral, enveloping structural constraint on the endoscope handle 200 and providing auxiliary positioning. This flange member 140 guides and restricts the radial positional relationship between the sampler 100 and endoscope handle 200 during the initial assembly, preventing assembly misalignment or displacement and providing the necessary structural foundation for a stable and reliable connection.

[0028] Furthermore, the sampler 100 is typically installed at the tail end of the endoscope handle 200, that is, at the end furthest from the endoscope insertion part (e.g., Figures 3-5 (As shown). This is mainly because the tail end of the endoscope handle 200 is usually used to lead out the negative pressure interface 131 and other functional interfaces. The structure of this area is relatively concentrated and the space is relatively ample, making it suitable for setting up the connection parts 120 of the sampler 100 and related pipelines.

[0029] Meanwhile, this position facilitates the operator's grip and observation during operation, and also allows for the rapid assembly and disassembly of the sampler 100 during sampling. It should be noted that the installation position of the sampler 100 is not limited to the tail end of the endoscope handle 200. This embodiment is only illustrated with reference to the external structure of the endoscope shown. For endoscopes with other external structures, the sampler 100 can also be placed in other suitable positions according to the actual structural characteristics. As long as effective docking with the suction nozzle 210 of the endoscope handle 200 can be achieved, it should be considered a reasonable application of the technical solution of this application.

[0030] Regarding the core inventive point of this application, the flange member 140 has a contact surface 1411 on the side facing the endoscope handle 200, and at least one rib 171 is provided on the contact surface 1411. The contact surface 1411 is positioned close to the outer surface of the endoscope handle 200 in the assembled state, while the rib 171 protrudes from the contact surface 1411 and is used to form a pressing contact with the outer surface of the endoscope handle 200 after assembly. By providing the rib 171 on the contact surface 1411, the traditional contact method relying on the overall surface contact can be changed, so that a clear and concentrated force contact area is formed between the sampler 100 and the endoscope handle 200, thereby avoiding the problems of force dispersion, insufficient pressure, or insufficient assembly stability caused by large-area contact.

[0031] The sampler 100 is provided with a socket 161 for engaging the suction nozzle 210 of the endoscope handle 200. The inner diameter of the socket 161 matches the outer diameter of the suction nozzle 210 of the endoscope handle 200, allowing the suction nozzle 210 to be inserted into the socket 161 and form a sealing fit. The socket 161 is typically formed on the mounting surface 160 of the sampler 100, which is connected to the mating surface 1411, so that the socket 161 and the rib 171 are in the same force-bearing system in terms of structural position.

[0032] It is worth noting that the socket 161 mentioned in this embodiment refers to the interface part that is directly connected to the valve body 130. This interface part is generally directly connected to the suction nozzle 210 with a rubber ring to form a seal. This interface part is not limited to being located in the overall structure of the socket 161. It can be set inside the socket 161 or close to the opening of the socket 161.

[0033] When the sampler 100 and endoscope handle 200 are assembled, the rib 171 presses against the outer surface of the endoscope handle 200, thereby pressing and fixing the suction nozzle 210 of the endoscope handle 200 within the wall of the insertion hole 161. This fixing is not the result of a single structure, but rather the result of the coordinated action of the side wall of the insertion hole 161 and the pressing action of the rib 171, achieving clamping and restraint of the suction nozzle 210. Specifically, when the rib 171 presses against the outer wall of the endoscope handle 200, the mating surface 1411 in the area where the rib 171 is located undergoes a certain degree of controlled deformation relative to the endoscope handle 200, causing the sampler 100 as a whole to form a constraint force in the radial direction relative to the endoscope handle 200. This constraint force is further transmitted to the insertion hole 161, causing the wall of the insertion hole 161 to continuously apply clamping and pressing action to the suction nozzle 210, thereby maintaining a stable connection and reliable sealing state in the assembled state.

[0034] The flange member 140 includes a support wall 150, which is connected to and supports the mating surface 1411. The support wall 150 is disposed along at least a portion of the mating surface 1411, enabling the mating surface 1411 to obtain stable back support in the assembled state. In different embodiments, the support wall 150 can be in the form of a hollow support surface, a solid support block, or a support frame with a hollow structure, etc., and its specific structural form can be selected and adjusted according to the overall size of the sampler 100, material properties, and assembly space. By providing the support wall 150, when the mating surface 1411 and its protruding ribs 171 are subjected to pressure from the outer surface of the endoscope handle 200, the pressure can be effectively transmitted and dispersed into the overall structure of the flange member 140, thereby improving the structural stability of the mating surface 1411 area.

[0035] Furthermore, the structural support of the supporting wall 150 limits the deformation of the mating surface 1411 under stress, ensuring that the rib 171 maintains a relatively stable geometric shape when pressing against the outer surface of the endoscope handle 200, thus preventing collapse, warping, or uneven deformation due to insufficient local stiffness. Simultaneously, the presence of the supporting wall 150 also helps prevent structural fatigue or performance degradation of the rib 171 due to repeated stress during multiple assembly, disassembly, or long-term use, ensuring good stability and consistency in the pressing effect of the rib 171 under different operating conditions.

[0036] As an optional embodiment, when the sampler 100 is mounted on the endoscope handle 200, the flange member 140 can deform relative to the endoscope handle 200 so that the rib 171 and at least a portion of the contact surface 1411 together abut against the outer surface of the endoscope handle 200. Specifically, after the rib 171 first makes contact with the outer wall of the endoscope handle 200, the contact surface 1411 near the rib 171 will elastically deform towards the side away from the endoscope handle 200 due to the squeezing action of the rib 171. The deformation of the contact surface 1411 area farther away from the rib 171 is relatively small, and this part of the area gradually forms direct contact with the outer surface of the endoscope handle 200.

[0037] This creates a composite pressure state dominated by the rib 171 and assisted by the mating surface 1411, enabling the sampler 100 to obtain a more uniform and stable constraint force in the radial direction. This structure not only avoids local stress concentration that may occur when a single rib 171 is in contact, but also compensates for the effects of assembly tolerances and wear during use to a certain extent, significantly improving the overall pressure stability.

[0038] It should be emphasized that even if only the rib 171 directly abuts against the outer wall of the endoscope handle 200, and the contact surface 1411 does not participate in the pressing, it is still within the protection scope of the present invention. The above-mentioned situation in which the contact surface 1411 participates in the pressing is only described as a preferred embodiment.

[0039] Of course, the rib 171 can be made of various materials. For example, a rubber strip with a certain hardness can be used as the rib 171 to ensure the pressing effect while avoiding scratches or damage to the surface of the endoscope handle 200. At the same time, it is also possible to use a relatively soft rubber strip or other polymer elastic material to form the rib 171, as long as it can effectively press against the endoscope handle 200 in the assembled state.

[0040] As an optional embodiment, the extending direction of the rib 171 is consistent with the direction in which the sampler 100 is assembled on the endoscope handle 200, so that the rib 171 forms a continuous pressing area in the axial direction, which is beneficial to improving the stability after assembly. Of course, the present invention is not limited to this, and the extending direction of the rib 171 can also be inclined relative to the assembly direction of the sampler 100 to adapt to different handle shapes or different force requirements.

[0041] In different embodiments, the rib 171 can also be arranged in a non-linear form such as corrugated or curved. By changing the geometric shape of the rib 171, its stress characteristics and deformation mode can be adjusted to further optimize the pressure resistance effect.

[0042] As an optional embodiment, the ribs 171 are arranged in multiple intervals on the mating surface 1411 along a direction perpendicular to the direction in which the sampler 100 is assembled with the endoscope handle 200. By setting multiple ribs 171, multiple pressure points can be formed in the circumferential direction or in local areas, thereby improving the stability of the sampler 100 in the assembled state.

[0043] As an optional embodiment, refer to Figure 3 As shown, the cross section of the rib 171 along its length and near the endoscope handle 200 includes an abutment plane 1711 and transition surfaces 1712 respectively disposed on both sides of the abutment plane 1711. The abutment plane 1711 is located at the outer end of the rib 171 and is set as the main force-bearing area that directly abuts against the outer surface of the endoscope handle 200.

[0044] The contact surface 1711 is a continuous and smooth planar structure. Its width and length can be designed according to the outer diameter of the endoscope handle 200, so that it can form a relatively stable linear or strip-shaped contact in the assembled state, thereby avoiding the problem of local stress concentration caused by the contact of sharp points or edges with the outer surface of the endoscope handle 200. By setting a smooth contact surface 1711, the contact stress can be evenly distributed along the length of the rib 171 while ensuring sufficient pressure, which is beneficial to improving the stability and controllability of the pressure contact process.

[0045] The transition surfaces 1712 are respectively disposed on both sides of the abutment plane 1711, and are preferably arc-shaped, gradually extending along the side away from the abutment plane 1711 and transitioning to the mating surface 1411. This arc-shaped transition structure makes the rib 171 form a geometric shape that gradually changes from the abutment plane 1711 to the mating surface 1411 in the cross-sectional direction, thereby structurally improving the connection strength between the rib 171 and the mating surface 1411. On the one hand, the setting of the transition surface 1712 can provide lateral support for the abutment plane 1711, enhancing the overall bending and compressive strength of the rib 171; on the other hand, the arc-shaped transition can effectively reduce the tendency of the compressive load to concentrate at the root of the rib 171, avoiding problems such as stress concentration, material fatigue, or accelerated wear in the connection area between the rib 171 and the mating surface 1411 due to repeated stress.

[0046] As an optional embodiment, the ends of the abutment plane 1711 and the transition surface 1712 gradually narrow along the length of the rib 171, and an arc-shaped guide surface 1713 is formed at their ends to guide contact. During the assembly of the sampler 100 and the endoscope handle 200, this guide surface can initially make slight contact with the outer wall of the endoscope handle 200, and gradually transition to a stable pressing state with the abutment plane 1711 during continued assembly. This allows the contact between the rib 171 and the endoscope handle 200 to be gradually established from point to line, and from local to overall. This structural design effectively reduces assembly resistance in the initial stage, minimizes scratching or jamming, and ensures a smooth and continuous contact process for the rib 171 throughout the assembly process.

[0047] Reference Figure 1 , Figure 2 As shown, the flange member 140 forms a hollow frame structure along the direction in which the sampler 100 is assembled to the endoscope handle 200. By designing the flange member 140 as a hollow structure, on the one hand, it can effectively reduce local wall thickness differences during injection molding, avoiding molding defects such as shrinkage and warping caused by material accumulation, thereby facilitating the stable molding accuracy of the mating surface 1411 and its ribs 171; on the other hand, the hollow structure allows the flange member 140 to maintain the necessary structural dimensions while having a certain elastic deformation space, so that when it is assembled with the endoscope handle 200 and comes into contact with it, it can produce controlled deformation rather than rigid pressure, which is beneficial for the ribs 171 to stably fit and press against the outer surface of the endoscope handle 200.

[0048] Meanwhile, by setting up a hollow frame structure, the material can be reasonably distributed to the key stress area while effectively reducing the overall weight of the flange component 140. This allows the area where the mating surface 1411 and the rib 171 are located to obtain sufficient structural support, so that the required overall rigidity and structural strength can still be maintained during multiple assembly and disassembly and long-term use, avoiding the decline in positioning performance due to excessively soft materials or weak structures.

[0049] It is worth noting that the aforementioned hollow frame structure is not limited to being formed along the direction in which the sampler 100 is assembled with the endoscope handle 200. In other alternative embodiments, the hollow structure may also be arranged perpendicular to the assembly direction, or inclined at a certain angle, or in the form of a multi-directional through frame. As long as the hollow structure can provide effective structural support for the mating surface 1411 and its upper ribs 171, and allows the required elastic deformation in the assembled state to achieve stable pressure and reliable positioning, it should be considered as an alternative embodiment of the present invention, and does not constitute a limitation on the scope of protection of the present invention.

[0050] Reference Figure 2 As shown, the supporting wall 150 includes a first wall 151 and a second wall 152. A mating surface 1411 is formed on the mating wall 141. One end of the first wall 151 is connected to one end of the second wall 152, and both ends of the mating wall 141 are connected to the other ends of the first wall 151 and the second wall 152, respectively, so that the first wall 151, the second wall 152, and the mating wall 141 together form a hollow frame structure. This structural layout allows the flange member 140 to have a triangular cross-section along the direction in which the sampler 100 is assembled onto the endoscope handle 200. The triangular structure has natural stability under stress, providing a reliable supporting foundation for the mating wall 141 without significantly increasing material usage. This helps the rib 171 maintain a stable stress state when pressing against the endoscope handle 200.

[0051] Specifically, the angle between the first wall surface 151 and the second wall surface 152 is approximately a right angle, wherein the angle between the second wall surface 152 and the mating wall surface 141 is smaller than the angle between the first wall surface 151 and the mating wall surface 141, making the overall structure form an approximately right-angled triangle. This angular relationship ensures that the mating wall surface 141, being a "slanted force-bearing surface" in the force transmission path, can distribute the force generated when the rib 171 applies radial pressure to the endoscope handle 200 along the mating wall surface 141 to the first wall surface 151 and the second wall surface 152, thereby avoiding excessive concentrated loads on a single wall surface.

[0052] Of course, in actual structures, such as Figure 2As shown, the first wall surface 151, the second wall surface 152, and the mating wall surface 141 are not typically connected by sharp turns, but rather by rounded transitions, resulting in a more continuous stress distribution. The mating wall surface 141 is located at the longer inclined edge. This arrangement not only helps to expand the effective stress-bearing area of ​​the mating surface 1411 and the rib 171, but also improves the fatigue resistance and structural strength of the mating wall surface 141 and the entire supporting wall surface 150 during repeated assembly and disassembly processes.

[0053] In some embodiments, the supporting wall 150 further includes a reinforcing rib 153, which is disposed within the hollow frame structure of the flange member 140 and connected to the fitting wall 141. The introduction of the reinforcing rib 153 provides additional inner support to the fitting wall 141, constraining its deformation tendency when the rib 171 presses against the endoscope handle 200. This limits excessive collapse of the fitting wall 141 into the hollow frame, ensuring a more stable and controllable pressing relationship between the rib 171 and the endoscope handle 200.

[0054] As an optional embodiment, the rib 171 is staggered and / or correspondingly arranged relative to the connection position of the mating wall surface 141 and the reinforcing rib plate 153. In the case of staggered arrangement, when the rib 171 presses against the outer surface of the endoscope handle 200, the mating wall surface 141 in the area near the rib 171 preferentially undergoes elastic deformation, while the area of ​​the mating wall surface 141 away from the rib 171 and close to the support position of the reinforcing rib plate 153 can remain relatively stable and directly abut against the surface of the endoscope handle 200 due to the restriction of the reinforcing rib plate 153. This forms a composite pressing state with both deformation area and stable support area on the same mating surface 1411, improving the reliability of the overall pressing fit.

[0055] In some embodiments, at least one pair of ribs 171 are located on both sides of the connection between the mating surface 1411 and the reinforcing rib plate 153. When the pair of ribs 171 press against the sidewall of the endoscope handle 200, the mating surface 1411 area near the ribs 171 undergoes controlled deformation, while the mating surface 1411 area located between the two ribs 171 and close to the reinforcing rib plate 153 forms a stable contact with the endoscope handle 200 under the support of the reinforcing rib plate 153. This symmetrical or near-symmetrical arrangement can further balance the force distribution on the mating surface 141, preventing the sampler 100 from tilting or becoming loose in the assembled state.

[0056] Reference Figure 2As shown, at least a portion of the rib 171 extends to the junction 163 where the mounting surface 160, where the insertion hole 161 is located on the sampler 100, connects with the mating surface 1411. By extending the rib 171 to this junction area, the force path of the rib 171 can be partially transferred to the mounting surface 160, thereby reducing the bending deformation borne solely by the mating wall surface 141 and improving the stability of the overall structure in the assembled state.

[0057] In some embodiments, a recessed cavity 162 is formed on the mounting surface 160 where the insertion hole 161 on the sampler 100 is located, and at least a portion of the rib 171 extends into the recessed cavity 162. By extending the rib 171 beyond the mating surface 1411 and into the recessed cavity 162, additional coverage and support can be provided for the rib 171 structurally. This allows the root region of the rib 171 to not completely rely on the deformation bearing of the mating wall surface 141 when it presses against the endoscope handle 200, thereby dispersing the force on the area where the rib 171 is located to a certain extent and avoiding weakening the pressing effect of the rib 171 on the endoscope handle 200 due to the overall deformation of the mating wall surface 141.

[0058] Furthermore, the junction 163 where the mounting surface 160 where the insertion hole 161 on the sampler 100 is located connects to the mating surface 1411 is provided with a rounded corner surface 1631, and at least part of the rib 171 extends to the rounded corner surface 1631. The rounded corner surface 1631 makes the structural transition between the mating surface 1411 and the mounting surface 160 smoother, reducing the risk of stress concentration, and also provides a more continuous stress path for the rib 171 extending to this area. Of course, in other embodiments, the junction 163 can also be a right-angled surface or a transition surface 1712 of other shapes; as long as the requirements of structural strength and assembly stability are met, these are all optional embodiments of the present invention.

[0059] As an optional embodiment, the cavity wall 1621 of the concave cavity 162 connecting the rib 171 is closer to the insertion hole 161 side relative to the mating surface 1411, giving the rib 171 a higher structural thickness and local stiffness at this position. When the rib 171 presses against the endoscope handle 200, the position of the cavity wall 1621 can form a certain lever arm effect in the structure, causing the rib 171 to bend in a controlled manner outside the mating surface 1411, thereby avoiding excessive deformation of the portion of the rib 171 outside the concave cavity 162, and further ensuring the stability and continuity of the pressing effect of the rib 171.

[0060] In this embodiment, three ribs 171 are provided, arranged parallel to each other along the length direction on the mating surface 1411, thereby forming a multi-point, linearly distributed pressure contact structure in the assembled state. The uppermost rib 171 extends along the mating surface 1411 and further extends into the concave cavity 162 formed by the sampler 100 mounting surface 160, allowing one end or a portion of the rib 171 to enter the concave cavity 162. This arrangement ensures that the rib 171 is not only structurally supported by the mating wall 141 but also receives additional constraint from the cavity wall 1621 of the concave cavity 162, which improves the overall stability and resistance to deformation of the rib 171 when pressing against the endoscope handle 200.

[0061] The other two ribs 171 are located below the rib 171 extending into the concave cavity 162 and are spaced apart from it, so that the three ribs 171 form a top-to-bottom arrangement on the mating surface 1411. This arrangement can form distributed pressure points on the outer surface of the endoscope handle 200, so that the pressure is transmitted step by step along the mating surface 1411, thereby avoiding excessive concentrated load on a single rib 171.

[0062] In this embodiment, a single reinforcing rib 153 is positioned below the protruding rib 171 extending into the concave cavity 162 and above the other two protruding ribs 171. Specifically, the reinforcing rib 153 is sandwiched between the upper, middle, and lower protruding ribs 171. This arrangement effectively supports the central region of the contact wall surface 141, limiting the deformation tendency of the contact wall surface 141 when the protruding ribs 171 press against the endoscope handle 200, and guiding the contact wall surface 141 to produce relatively uniform and controllable elastic deformation.

[0063] The lowest rib 171 is located in the area near the second wall surface 152 and the mating wall surface 141 where the angle is small. Since this area itself is supported by the second wall surface 152 and the mating wall surface 141 to form a stable structure, it has high local stiffness. Therefore, even without additional reinforcing ribs 153, the lowest rib 171 can be provided with sufficient support at this location, ensuring that it is not prone to excessive deformation or instability when pressing against the outer wall of the endoscope handle 200.

[0064] The central rib 171 and the upper rib 171 extending into the concave cavity 162 are respectively distributed on both sides of the reinforcing rib plate 153. Under the support of the reinforcing rib plate 153, the mating wall surface 141 in this area can form controlled deformation when subjected to force, so that the central rib 171 and the upper rib 171 can generate stable pressure when pressing against the outer wall of the endoscope handle 200, without weakening the pressure-bearing effect due to the overall collapse of the mating wall surface 141. Through the above structural cooperation, the three ribs 171 work together under different heights and support conditions, thereby improving the overall stability and reliability of the sampler 100 and the endoscope handle 200 in the assembled state.

[0065] This application also provides an endoscope assembly, including an endoscope handle 200 and a sampling device employing the above-described technical solution. The sampling device is detachably connected to the endoscope handle 200 and is mated with the suction nozzle 210 of the endoscope handle 200. In the assembled state, the sampling device is positioned around the endoscope handle 200 by its flange member 140, and under the pressing action of the rib 171, the suction nozzle 210 forms a stable and sealed connection with the insertion hole 161 on the sampling device. This ensures that the sampling device is easy to assemble and disassemble while improving the reliability of the connection and the safety of use during sampling.

[0066] 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.

[0067] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0068] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention 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 the present invention should be included within the scope of protection of the present invention.

Claims

1. A sampling device for use in endoscopic sampling, characterized in that The utility model relates to a kind of endoscope sampling device, including: Sampler (100), the flange member (140) is set around endoscope handle (200) after the sampler (100) is assembled in place with endoscope handle (200), to assist in positioning endoscope handle (200); The side of the flange member (140) towards endoscope handle (200) is provided with a fit surface (1411), and at least one convex rib (171) is arranged on the fit surface (1411); The sampler (100) is provided with a jack (161) for docking the suction nozzle (210) of endoscope handle (200);Wherein: In the case where the sampler (100) is assembled in place with the endoscope handle (200), the convex rib (171) is pressed against the outer surface of the endoscope handle (200) to cause the flange member (140) to elastically deform towards the radial direction of the jack (161), so that the suction nozzle (210) of the endoscope handle (200) is pressed and fixed in the hole wall of the jack (161).

2. The sampling device of claim 1, wherein, The flange member (140) includes a support wall (150) connected to and supporting the fit surface (1411); And / or, in the case where the sampler (100) is assembled in place with the endoscope handle (200), the flange member (140) can deform relative to the endoscope handle (200) so that the convex rib (171) and at least part of the fit surface (1411) together press against the outer surface of the endoscope handle (200); And / or, the extension direction of the convex rib (171) is consistent with the direction in which the sampler (100) is assembled with the endoscope handle (200); And / or, the convex rib (171) is spaced apart as multiple on the fit surface (1411) in a direction perpendicular to the direction in which the sampler (100) is assembled with the endoscope handle (200); And / or, the cross section of the convex rib (171) near the side of the endoscope handle (200) along its length direction includes an abutting plane (1711) and transition surfaces (1712) respectively arranged on both sides of the abutting plane (1711), and the abutting plane (1711) is a smooth plane and is used for pressing contact with the endoscope handle (200).

3. The sampling device of claim 2, wherein, The flange member (140) forms a hollow frame structure in the direction in which the sampler (100) is assembled with the endoscope handle (200); And / or, the abutting plane (1711) and the end of the transition surface (1712) gradually narrow along the length direction of the convex rib (171), and form an arc-shaped guide surface (1713) for guiding contact.

4. The sampling device of claim 3, wherein, The support wall surface (150) comprises a first wall surface (151) and a second wall surface (152), the fitting surface (1411) is formed on the fitting wall surface (141), one end of the first wall surface (151) is connected with one end of the second wall surface (152), and the other ends of the first wall surface (151) and the second wall surface (152) are respectively connected with the fitting wall surface (141), so that the first wall surface (151), the second wall surface (152) and the fitting wall surface (141) jointly form a hollow frame structure. The support wall surface (150) further comprises a reinforcing rib plate (153), the reinforcing rib plate (153) is arranged in the hollow frame structure of the flange component (140) and is connected to the fitting surface (1411).

5. The sampling device of claim 4, wherein, The convex ribs (171) are arranged in a staggered manner and / or a corresponding manner relative to the connecting positions of the fitting surface (1411) and the reinforcing rib plate (153).

6. The sampling device of claim 5, wherein, At least one pair of convex ribs (171) are respectively located on both sides of the connecting positions of the fitting surface (1411) and the reinforcing rib plate (153).

7. The sampling device of any one of claims 1-6, wherein, At least part of the convex ribs (171) extend to the junction (163) between the mounting surface (160) where the insertion hole (161) of the sampler (100) is located and the fitting surface (1411). And / or, the mounting surface (160) where the insertion hole (161) of the sampler (100) is located is formed with a concave cavity (162), and at least part of the convex ribs (171) extend into the concave cavity (162).

8. The sampling device of claim 7, wherein, The junction (163) between the mounting surface (160) where the insertion hole (161) of the sampler (100) is located and the fitting surface (1411) is provided with a rounded surface (1631), and at least part of the convex ribs (171) extend to the rounded surface (1631).

9. The sampling device of claim 7, wherein, The cavity wall (1621) of the concave cavity (162) connecting the convex ribs (171) is closer to the side of the insertion hole (161) relative to the fitting surface (1411).

10. An endoscope assembly characterized by: The endoscope handle (200) and the sampling device of any one of claims 1-9 are connected to each other in a detachable manner, and the sampling device is arranged in a butt joint manner with the suction nozzle (210) of the endoscope handle (200).

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