Endoscope and pipeline connecting piece
By designing pipe connections composed of split parts that dock in the axial direction, the problem of front and rear housing offset during assembly is solved, and the product yield and sealing are improved.
Patent Information
- Application Number
- CN202311693421.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-11
- Publication Date
- 2025-06-13
AI Technical Summary
When assembling the pipe connections of the endoscope, it is easy to cause deviation between the front and rear housings, resulting in device lag and low product yield.
A pipe connection is designed, which consists of a first and second pipe bodies that dock in the axial direction, and the multi-cavity insertion tube is arranged in the insertion channel formed therein, the first opening is located in the first tube body, and the second opening is located in the second tube body, allowing the seal to be installed between these openings to achieve sealing isolation.
It reduces the assembly process requirements of pipe connections, improves product yield, ensures smooth entry and exit of equipment, and improves sealing.
Smart Images
Figure CN120130889A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of medical devices, and more specifically, to an endoscope and a pipeline connector. Background Art
[0002] As a commonly used medical device, endoscope equipment is increasingly widely used in daily medical surgeries. The endoscope includes a slender and flexible insertion part. Doctors insert the insertion part of the endoscope into the human body through natural body cavities or minimally invasive incisions to observe the internal conditions of the human body. To achieve various functions, generally, the insertion part of the endoscope will include various pipelines and wire harnesses, such as forceps channels, water and gas pipelines, spring tubes, signal lines, optical fibers, etc. The wire harnesses and pipelines are closely arranged inside the insertion tube.
[0003] With the progress of science and technology and the advocacy of the concept of refined medicine, endoscopes are developing towards the direction of thinner mirrors, multi-function, high stability and low cost. However, with the decrease in the outer diameter of the insertion tube and the increase in the tightness between the contents, it is easy for the pipelines inside the insertion tube to squeeze each other during the use of the endoscope, resulting in an increase in equipment failure rate and a decrease in reliability. The multi-cavity insertion tube can well solve this problem. By opening pipelines with various functions in a single catheter, it not only avoids interference and friction between the pipelines, but also saves space and reduces the outer diameter of the insertion tube.
[0004] Among them, some pipelines in the insertion tube (such as the instrument channel) need to communicate with corresponding external interfaces (such as the instrument inlet). For this reason, in the related art, the multi-cavity insertion tube is sleeved on the main channel of the pipeline connector, and openings are provided on the side walls of some pipelines in the multi-cavity insertion tube to communicate with the respective branch channels of the pipeline connector, thereby realizing the connection of the pipelines. Specifically, the pipeline connectors provided in the related art are usually longitudinally cut into a front shell and a rear shell, and after positioning the multi-cavity insertion tube and related components in the front shell or the rear shell, the front shell and the rear shell are adhesively fixed together.
[0005] However, the inventors of the present application found that: during the assembly process of the above pipeline connector, it is easy to have a situation where the front and rear shells are offset. This offset situation is likely to cause instrument jamming, so higher requirements are needed for the assembly process, and the product yield is low.
[0006] Therefore, how to reduce the assembly process requirements of the pipeline connector and improve the product yield is a problem that those skilled in the art need to solve currently. Summary of the Invention
[0007] In view of this, the purpose of the present application is to provide an endoscope and a pipeline connector. The structural design of the endoscope and the pipeline connector can effectively reduce the assembly process requirements of the pipeline connector and improve the product yield.
[0008] To achieve the above object, the present application provides the following technical solutions:
[0009] A pipe connector for assembling with a multi-chamber insertion tube. The multi-chamber insertion tube includes a first channel and a second channel, and the side wall of the multi-chamber insertion tube is respectively provided with a first opening communicating with the first channel and a second opening communicating with the second channel. The first opening and the second opening are axially staggered along the multi-chamber insertion tube; the pipe connector includes:
[0010] A first pipe body;
[0011] A second pipe body axially butted with the first pipe body to form an insertion channel for the multi-chamber insertion tube to pass through;
[0012] Wherein, when the multi-chamber insertion tube is inserted into the insertion channel, the first opening is located in the first pipe body, and the second opening is located in the second pipe body;
[0013] The first pipe body and the second pipe body are separate components so as to install a seal between the first opening and the second opening along the axial direction of the multi-chamber insertion tube.
[0014] Optionally, in the above pipe connector, the first channel is an instrument working channel, and the first pipe body includes a first main pipeline and a first branch pipeline that communicate with each other; the first main pipeline is butted with the second pipe body to form the insertion channel; an instrument inlet is formed at one end of the first branch pipeline away from the first main pipeline; when the multi-chamber insertion tube is inserted into the insertion channel, the first opening is disposed opposite to the first branch pipeline to communicate the first channel and the first branch pipeline;
[0015] And / or,
[0016] The second channel is an instrument working channel, and the second pipe body includes a second main pipeline and a second branch pipeline that communicate with each other; the second main pipeline is butted with the first pipe body to form the insertion channel; an instrument inlet is formed at one end of the second branch pipeline away from the second main pipeline; when the multi-chamber insertion tube is inserted into the insertion channel, the second opening is disposed opposite to the second branch pipeline to communicate the second channel and the second branch pipeline.
[0017] Optionally, in the above pipe connector, the pipe connector further includes:
[0018] A cover body sealingly connected to one end of the first pipe body away from the second pipe body, and a circumferential positioning structure is provided between the cover body and the first pipe body;
[0019] The cover is also used for fixedly connecting with the end of the multi-cavity insertion tube.
[0020] Optionally, in the above pipeline connector, the circumferential positioning structure includes a clamping component, and the clamping component includes a clamping groove and a clamping head that cooperate with each other. The clamping groove is arranged on one of the cover and the first pipe body, and the clamping head is arranged on the other of the cover and the first pipe body. Optionally, in the above pipeline connector, the number of the clamping components is greater than or equal to two groups, and the sizes, depths, shapes, and / or colors between different groups of clamping components are different from each other;
[0021] Or,
[0022] The number of the clamping components is two groups. The cover is provided with a first clamping groove and a second clamping head, and the first pipe body is provided with a first clamping head and a second clamping groove. The first clamping groove cooperates with the first clamping head, and the second clamping head cooperates with the second clamping groove.
[0023] Optionally, in the above pipeline connector, the surface of the cover facing the multi-cavity insertion tube is provided with a first sealing part and / or a second sealing part. The first sealing part is used for blocking the first channel, and the second sealing part is used for blocking the second channel.
[0024] Optionally, in the above pipeline connector, the first sealing part is a first sealing column in a conical shape. The head end size of the first sealing column is smaller than the tail end size connected to the cover, and the tail end size of the first sealing column is larger than the size of the first channel;
[0025] The second sealing part is a second sealing column in a conical shape. The head end size of the second sealing column is smaller than the tail end size connected to the cover, and the tail end size of the second sealing column is larger than the size of the second channel.
[0026] Optionally, in the above pipeline connector, the multi-cavity insertion tube further includes a third channel, and the cover further includes a through hole communicated with the third channel for the component arranged in the third channel to pass out from the through hole.
[0027] Optionally, in the above pipeline connector, the first channel is a water supply channel or a suction channel, the second channel is an instrument working channel, and a first joint communicated with the outside is arranged on the side wall of the first pipe body, and the first joint is communicated with the first opening.
[0028] Optionally, in the above pipeline connector, the second channel serves as both an instrument working channel and a suction channel, and a second joint communicating with the outside is further provided on the side wall of the second branch pipeline; a dispensing groove is provided at one end of the second main pipeline away from the first pipe body, and the dispensing groove is used for dispensing glue to seal the connection between the end of the second main pipeline away from the first pipe body and the multi-cavity insertion tube.
[0029] When applying the pipeline connector provided by the present application, the first pipe body and the second pipe body are axially butted, the multi-cavity insertion tube can pass through the insertion channel formed by the first pipe body and the second pipe body, and the first opening is located inside the first pipe body, and the second opening is located inside the second pipe body. The first pipe body and the second pipe body are split components, so as to facilitate the installation of a seal between the first opening and the second opening along the axis of the multi-cavity insertion tube, thereby realizing the sealed isolation between the first opening and the second opening. With the above arrangement, compared with the conventional pipeline connector that is longitudinally cut into front and rear shells, the first pipe body and the second pipe body are split components along the axis, which is convenient for the installation of the seal, and the contact end faces between the first pipe body and the second pipe body are significantly fewer than those of the front and rear shells, making it easy to achieve precise docking. Moreover, the docking part of the first pipe body and the second pipe body does not affect the entry and exit of the instrument, and the assembly process requirements are low, so the product yield is high.
[0030] In order to achieve the above object, the present application also provides an endoscope, which includes any one of the above pipeline connectors. Since the above pipeline connector has the above technical effects, the endoscope having the pipeline connector should also have corresponding technical effects. BRIEF DESCRIPTION OF THE DRAWINGS
[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0032] Figure 1 It is a cross-sectional view of the multi-cavity insertion tube;
[0033] Figure 2 It is a cross-sectional view of the position of the first opening of the multi-cavity insertion tube;
[0034] Figure 3 It is a cross-sectional view of the position of the second opening of the multi-cavity insertion tube;
[0035] Figure 4 It is a schematic structural diagram of an insertion tube assembly according to a specific embodiment of the present application;
[0036] Figure 5 For Figure 4Schematic cross-sectional view;
[0037] Figure 6 is Figure 4 Another schematic cross-sectional view;
[0038] Figure 7 is Figure 4 Explosion schematic diagram;
[0039] Figure 8 is Figure 7 Schematic cross-sectional view;
[0040] Figure 9 Is the structural schematic diagram of the cover body.
[0041] The markings in the attached drawings are as follows:
[0042] Multi-cavity insertion tube 2, first channel 21, second channel 22, third channel 23, outer skin 24, core layer 25, first opening 26, second opening 27;
[0043] First tube body 11, second tube body 12, insertion channel 13, second main pipeline 121, second branch pipeline 122, instrument inlet 123, cover body 14, chuck 141, first sealing part 142, second sealing part 143, through hole 144, first joint 15, second joint 16, glue dispensing groove 124, washer 125, first sealing ring 17, second sealing ring 18, retaining ring 19. Specific embodiments
[0044] The embodiments of the present application disclose an endoscope and a pipeline connector to reduce the assembly process requirements of the pipeline connector and improve the product yield.
[0045] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.
[0046] An endoscope generally includes an insertion part, an operation part, a cable, a water supply pipeline, and a suction pipeline. The insertion part can enter the human body and can further include a head hard part, a bending part, and an insertion tube according to functional distinctions. The operation part includes operation components such as buttons and handwheels to control the shape of the insertion part and achieve auxiliary functions. The cable is used to realize communication between the endoscope and the host, the water supply pipeline is used to realize the water supply function, and the suction pipeline is used to realize the suction function.
[0047] The pipe connector provided by the present application can be assembled inside the housing of the operating part, and can be specifically installed and positioned through the limiting structure inside the housing. The pipe connector in the present application is used to assemble with a multi-cavity insertion tube to form an insertion tube assembly as shown in Figures 4 to 8 . For the structure of the multi-cavity insertion tube, please refer to Figure 1 , which includes an outer skin 24 and a core layer 25. The outer skin 24 and the core layer 25 are generally made of two different materials. The core layer 25 is provided with a first channel 21 and a second channel 22 for realizing different functions. Specifically, the first channel 21 and the second channel 22 can respectively correspond to but are not limited to a cable channel, a traction rope channel, a water supply channel, a suction channel, an instrument working channel, etc. After the multi-cavity insertion tube is assembled to the pipe connector, the traction rope in the traction rope channel extends out from the pipe connector and is connected to the winding wheel assembly of the operating part, and the signal wire in the cable channel extends out from the pipe connector and converges into the cable wire after passing through the key of the operating part. The number of various channels is not limited to one, and can also be set to multiple according to needs. Please refer to Figure 2 and Figure 3 . For the convenience of connecting with the pipe connector, the side wall of the multi-cavity insertion tube is provided with a first opening 26 communicating with the first channel 21 and a second opening 27 communicating with the second channel 22. The first opening 26 and the second opening 27 are arranged axially staggered along the multi-cavity insertion tube. Specifically, the number of the first openings 26 is the same as the number of the first channels 21 and they are arranged in one-to-one correspondence, and the number of the second openings 27 is the same as the number of the second channels 22 and they are arranged in one-to-one correspondence.
[0048] In some embodiments, please refer to Figures 4 - 8 , the pipe connector provided by the present application includes a first pipe body 11 and a second pipe body 12. Among them, the first pipe body 11 and the second pipe body 12 are axially butted to form an insertion channel 13 for the multi-cavity insertion tube 2 to pass through. When the multi-cavity insertion tube 2 is inserted into the insertion channel 13, the first opening 26 is located inside the first pipe body 11, and the second opening 27 is located inside the second pipe body 12; the first pipe body 11 and the second pipe body 12 are split parts, so as to install a seal between the first opening 26 and the second opening 27 along the axial direction of the multi-cavity insertion tube 2. The first pipe body 11 can specifically be an integrally formed part, and the second pipe body 12 can also specifically be an integrally formed part. The first pipe body 11 and the second pipe body 12 can be specifically limited by an axis and a shoulder structure. Through the setting of the seal, the first opening 26 and the second opening 27 are not communicated, so that after the multi-cavity insertion tube 2 is inserted into the pipe connector, the respective functions of the first channel 21 and the second channel 22 can be realized and do not affect each other. It can be understood that the seal can be installed at the butting position of the first pipe body 11 and the second pipe body 12, or can also be installed inside the first pipe body 11 and / or the second pipe body 12.
[0049] Compared with conventional pipe connectors which are longitudinally divided into front and rear shells, the first tube body 11 and the second tube body 12 are split components that are axially butt-jointed, which is convenient for the installation of the seal, and the contact end surface between the first tube body 11 and the second tube body 12 is significantly smaller than the contact end surface of the front and rear shells, making it easy to achieve precise docking. In addition, the joint between the first tube body and the second tube body does not affect the entry and exit of the instrument, and the assembly process requirements are low, thereby providing a high product yield.
[0050] In some embodiments, the first channel 21 is an instrument working channel, and the first tube body 11 includes a first trunk pipeline and a first branch pipeline that are interconnected; the first trunk pipeline is docked with the second tube body 12 to form an insertion channel 13; an instrument entrance is formed at one end of the first branch pipeline away from the first trunk pipeline; when the multi-cavity insertion tube 2 is inserted into the insertion channel 13, the first opening 26 is arranged relative to the first branch pipeline to connect the first channel 21 and the first branch pipeline. The first trunk pipeline can be specifically in the shape of a straight tube, and the first branch pipeline is inclined at a certain angle to the first trunk pipeline. The first tube body 11 adopts the design of the first trunk pipeline and the first branch pipeline, and the multi-cavity insertion tube 2 can be inserted into the first trunk pipeline, and the treatment instrument can be inserted from the first branch pipeline and enter the first channel 21 through the first opening 26, so as to be sent into the insertion part along the first channel 21 to perform corresponding operations. The above-mentioned structure is simple and compact, occupies little space, and is easy to assemble. The first trunk pipeline and the first branch pipeline can be specifically integrally injection molded. The first main pipeline and the first branch pipeline are integrally formed, which is convenient for processing and manufacturing. The two are integrally formed and no assembly is required, which simplifies the operation and avoids displacement of the channel connection due to assembly tolerance, affecting the smoothness of the entry and exit of the instrument. In addition, the one-piece structure can also provide good sealing.
[0051] In some embodiments, the second channel 22 is an instrument working channel. The second tube body 12 includes a second main pipeline 121 and a second branch pipeline 122 that are in communication with each other. The second main pipeline 121 is docked with the first tube body 11 to form an insertion channel 13. One end of the second branch pipeline 122 away from the second main pipeline 121 is formed with an instrument inlet 123. When the multi-lumen insertion tube 2 is inserted into the insertion channel 13, the second opening 27 is disposed opposite to the second branch pipeline 122 to communicate the second channel 22 and the second branch pipeline 122. The second main pipeline 121 may specifically be in a straight tube shape, and the second branch pipeline 122 is disposed at an angle to the second main pipeline 121. With the cooperative design of the second main pipeline 121 and the second branch pipeline 122 adopted for the second tube body 12, the multi-lumen insertion tube 2 can be inserted into the second main pipeline 121, and the treatment instrument can penetrate through the second branch pipeline 122 and enter the second channel 22 through the second opening 27, so as to be fed into the insertion part along the second channel 22 for corresponding operations. The above arrangement has a simple and compact structure, occupies a small space, and is convenient for assembly. The second main pipeline 121 and the second branch pipeline 122 may specifically be integrally injection-molded. The integral molding of the second main pipeline 121 and the second branch pipeline 122 is convenient for processing and manufacturing. Moreover, the integral molding of the two does not require further assembly, simplifies the operation, and also avoids the displacement at the channel connection caused by assembly tolerance, which affects the smoothness of the instrument entering and exiting. In addition, the integral structure can also provide good sealing performance.
[0052] In some embodiments, the first channel 21 and the second channel 22 may also both be instrument working channels, and the corresponding first tube body 11 and second tube body 12 are both arranged as described above.
[0053] In some embodiments, when the first channel 21 is an instrument working channel, the inner wall at the junction of the first main pipeline and the first branch pipeline is connected in an arc transition. Specifically, the inner wall at the junction of the first main pipeline and the first branch pipeline adopts an arc transition. Through the arc or circular arc transition, the instrument passing performance can be improved. Similarly, when the second channel 22 is an instrument working channel, the inner wall at the junction of the second main pipeline 121 and the second branch pipeline 122 may also be connected in an arc transition.
[0054] In some embodiments, please refer to Figure 9, the pipe connector further includes a cover body 14, which is hermetically connected to one end of the first pipe body 11 away from the second pipe body 12, and a circumferential positioning structure is provided between the cover body 14 and the first pipe body 11; the cover body 14 is also used for fixedly connecting with the end of the multi-cavity insertion pipe 2. The circumferential positioning between the cover body 14 and the first pipe body 11 can be realized through the circumferential positioning structure. The cover body 14 is fixed to the end of the multi-cavity insertion pipe 2, and the assembly relationship between the two is determined by the different channel sizes of the multi-cavity insertion pipe 2, that is, the relative position between the cover body 14 and the multi-cavity insertion pipe 2 is determined. Therefore, the circumferential positioning of the multi-cavity insertion pipe 2 and the first pipe body 11 can be realized through the circumferential positioning of the cover body 14 and the first pipe body 11. That is, the position of the opening of the instrument working channel (i.e., the first opening 26 and / or the second opening 27) can be determined through the circumferential positioning structure, so as to facilitate adjusting the first opening 26 to face the position of the first branch pipe and / or adjusting the second opening 27 to face the position of the second branch pipe 122. In addition, it can be understood that in other embodiments, if the pipe connector is not used to cooperate with the instrument working channel, for example, when there is no instrument working channel in the multi-cavity insertion pipe 2, there is no need to accurately position the circumferential position of the multi-cavity insertion pipe 2. Furthermore, there is no need to provide a circumferential positioning structure between the cover body 14 and the first pipe body 11, and even the above-mentioned cover body 14 may not be provided.
[0055] Specifically, in some embodiments, the circumferential positioning structure may include a clamping component, and the clamping component includes a clamping groove and a clamping head 141 that cooperate with each other. The clamping groove is provided on one of the cover body 14 and the first pipe body 11, and the clamping head 141 is provided on the other of the cover body 14 and the first pipe body 11. The cover body 14 and the first pipe body 11 are positioned through the cooperation of the clamping groove and the clamping head 141, which is convenient for assembly. Specifically, the clamping groove and the clamping head 141 can be in interference fit. While realizing positioning through the interference fit, reliable fixed connection can be achieved. Or, there can also be a clearance fit or a transition fit between the clamping head 141 and the clamping groove, and the cover body 14 and the first pipe body 11 can be fixedly connected by combining with glue application. In other embodiments, the circumferential positioning structure can also be an indication mark for assembly reference, as long as the circumferential installation position of the cover body 14 and the first pipe body 11 can be determined.
[0056] In some embodiments, the number of the clamping components can be greater than or equal to two groups. To avoid installation errors, a foolproof design is required to make the assembly method of the cover body 14 and the first pipe body 11 unique and facilitate assembly. Specifically, when the number of the clamping components is greater than or equal to two groups, the sizes, depths, shapes, and / or colors between different groups of clamping components can be made different, so that the assembly method of the cover body 14 and the first pipe body 11 is uniquely determined. For example, large teeth and small teeth can be provided on the upper end surface of the cover body 14, which cooperate with the large groove and the small groove on the first pipe body 11 respectively.
[0057] Alternatively, when the number of snap-fit components is two groups, a first card slot and a second card head may also be provided on the cover body 14, and a first card head and a second card slot may be provided on the first tube body 11, so that the assembly method of the cover body 14 and the first tube body 11 is uniquely determined.
[0058] Further, in some embodiments, a first sealing portion 142 and / or a second sealing portion 143 are provided on the surface of the cover body 14 facing the multi-cavity insertion tube 2. The first sealing portion 142 is used to block the first channel 21, and the second sealing portion 143 is used to block the second channel 22. By providing the first sealing portion 142 and / or the second sealing portion 143 on the cover body 14, the first sealing portion 142 blocks the first channel 21, and the second sealing portion 143 blocks the second channel 22, so that corresponding functions such as water supply or suction can be realized, enabling liquids, etc. to only flow within the corresponding sealed areas without seeping into other areas. The number of the first sealing portions 142 and the number of the second sealing portions 143 are set corresponding to the number of the first channel 21 and the second channel 22, and no specific limitation is made here.
[0059] When the cover body 14 is provided with the first sealing portion 142 and the second sealing portion 143, since the sizes of the respective channels in the multi-cavity insertion tube 2 are usually different (the size of the instrument working channel is usually larger, and the sizes of other channels are generally smaller), the sizes of the first sealing portion 142 and the second sealing portion 143 are correspondingly different. Therefore, the assembly method of the cover body 14 and the multi-cavity insertion tube 2 is uniquely determined.
[0060] In some embodiments, the first sealing portion 142 is a first sealing column in a conical shape. The head end size of the first sealing column is smaller than the tail end size connected to the cover body 14, and the tail end size of the first sealing column is larger than the size of the first channel 21. The position of the first sealing column corresponds to the position of the first channel 21. It adopts a conical structure, and the bottom end size is larger than the size of the first channel 21, specifically slightly larger than the size of the first channel 21. When the cover body 14120 is installed in place, the first sealing column and the inner wall of the first channel 21 form a tight fit to achieve a sealing effect. With the above settings for the first sealing portion 142, the structure is simple and the sealing is reliable.
[0061] In some embodiments, the second sealing portion 143 may also adopt the same structure as the above-mentioned first sealing portion 142, that is, the second sealing portion 143 is a second sealing column in a conical shape. The head end size of the second sealing column is smaller than the tail end size connected to the cover body 14, and the tail end size of the second sealing column is larger than the size of the second channel 22. In other embodiments, the first sealing portion 142 and the second sealing portion 143 may also adopt other conventional sealing structures such as gaskets, O-rings, and labyrinth seals.
[0062] In some embodiments, the multi-lumen insertion tube 2 further includes a third channel 22, and the cover 14 further includes a through hole 144 communicating with the third channel 22 for a component disposed in the third channel 22 to pass through the through hole 144. The third channel 22 may specifically be a traction rope and / or cable channel, and the through hole 144 is used for passing through the traction rope and / or cable. The traction rope and / or cable passes through the through hole 144 to ensure that the traction rope and the cable are connected to the bending assembly and the cable, realizing the angle bending function and complete communication. Specifically, the number and position of the through holes 144 can be flexibly set according to the number and position of the third channels 22, and no specific limitation is made here. Exemplarily, as Figure 1 shown, in the case where there are multiple third channels 22, and one of the third channels 22 is a cable channel and the remaining third channels 22 are traction rope channels, a plurality of through holes 144 can be correspondingly provided on the cover 14 and respectively correspond to the corresponding cable channels and traction rope channels. The through holes 144 and the cable channels and traction rope channels can be in one-to-one correspondence, or one through hole 144 can correspond to multiple traction rope channels, or one through hole 144 can correspond to a combination of one cable channel and at least one traction rope channel.
[0063] Exemplarily, in this embodiment, the first channel 21 is a water supply channel or a suction channel, the second channel 22 is an instrument working channel, and a first joint 15 communicating with the outside is provided on the side wall of the first tube body 11. The first joint 15 communicates with the first opening 26. With such a setting, the first tube body 11 can form a small three-way structure, and the liquid can enter the first channel 21 from the first joint 15 through the first opening 26 and be sent into the insertion part along the first channel 21, or suction can be realized from the insertion part along the first channel 21, through the first opening 26 to the first joint 15. The first joint 15 may specifically adopt a taper joint to connect to an external pipeline.
[0064] It can be understood that, in order to facilitate the smooth flow of the fluid between the first joint 15 and the first opening 26, a preset gap exists between the inner wall of the first tube body 11 and the outer wall of the multi-lumen insertion tube 2, and this preset gap can be larger than the gap between the inner wall of the second tube body 12 and the outer wall of the multi-lumen insertion tube 2. Alternatively, in some embodiments, the first joint 15 and the first opening 26 are located at the same axial position (i.e., the first joint 15 and the first opening 26 are located on the same cross-section of the first tube body 11), and the inner wall of the first tube body 11 is recessed radially at this axial position to form an annular groove. The first joint 15 communicates with the first opening 26 through this annular groove. Thus, a smooth fluid channel is formed between the first joint 15 and the first opening 26, and the fluid can be restricted from flowing into other spaces to a certain extent.
[0065] In some embodiments, the second channel 22 serves as both an instrument working channel and a suction channel. A second joint 16 communicating with the outside is further provided on the side wall of the second branch pipe 122. A dispensing groove 124 is provided at one end of the second main pipe 121 away from the first pipe body 11. The dispensing groove 124 is used for dispensing glue to seal the connection between one end of the second main pipe 121 away from the first pipe body 11 and the multi-cavity insertion tube 2. The second branch pipe 122 can form a small three-way structure. The second joint 16 can specifically adopt a taper joint to connect an external pipeline. The second joint 16 can be specifically provided at one end of the second branch pipe 122 away from the connection with the second main pipe 121. After the pipeline connector and the multi-cavity insertion tube 2 are assembled relative to each other, by dispensing glue and fixing in the dispensing groove 124, the fixation between the pipeline connector and the multi-cavity insertion tube 2 is achieved. At the same time, when the end of the second channel 22 is blocked by the cover body 14 and the instrument inlet 123 of the second branch pipe 122 is closed, it cooperates with the seal to form a closed cavity between the second branch pipe 122 and the second channel 22. This closed cavity can act as a suction channel to ensure that when suction is applied, the liquid can enter the second branch pipe 122 from the second channel 22 through the second opening 27, and then enter the suction pipeline through the second joint 16, without leaking into other areas. In other embodiments, the connection between one end of the second main pipe 121 away from the first pipe body 11 and the multi-cavity insertion tube 2 can also be sealed by a sealing structure such as an O-ring or a labyrinth seal.
[0066] In some embodiments, the seal includes a first O-ring 17 provided between the second pipe body 12 and the first pipe body 11. The first O-ring 17 is used to sleeve outside the multi-cavity insertion tube 2 for sealing and isolating the first pipe body 11 and the second pipe body 12 from each other. That is, while the first O-ring 17 realizes sealing with the multi-cavity insertion tube 2, it is also used to achieve end face and radial sealing between the first pipe body 11 and the second pipe body 12. With the above arrangement, while ensuring reliable sealing, the sealing structure is simplified. In other embodiments, the seal can also adopt a sealing structure such as sealant or labyrinth seal.
[0067] In some embodiments, a second O-ring 18 is provided at one end of the first pipe body 11 away from the second pipe body 12 for sealing with the cover body 14. Then, when the multi-cavity insertion tube 2 is inserted into the insertion channel 13, the liquid injected from the first joint 15 can only enter the cavity between the first O-ring 17 and the second O-ring 18 through the first opening 26, and then enter the first channel 21 in the multi-cavity insertion tube 2, without entering other areas.
[0068] For the convenience of installing the pipe connector and the operation part, retaining rings 19 may be respectively provided at one end of the first pipe body 11 away from the second pipe body 12 and one end of the second pipe body 12 away from the first pipe body 11, so as to cooperate with the limiting structure on the housing of the operation part. One end of the second pipe body 12 away from the first pipe body 11 serves as the insertion end of the multi-cavity insertion pipe 2, and a washer 125 may be provided outside the retaining ring 19. The washer 125 is pressed between the retaining ring 19 and the limiting structure on the housing of the operation part, and is used to eliminate the installation gap and ensure the tight connection between the first pipe body 11 and the second pipe body 12.
[0069] Based on the pipe connector provided in the above embodiments, the present application also provides an endoscope, which includes any one of the pipe connectors in the above embodiments. Since the endoscope adopts the pipe connector in the above embodiments, the beneficial effects of the endoscope can be referred to the above embodiments.
[0070] In this specification, the various embodiments are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other.
[0071] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A pipe connector for assembling with a multi-chamber insertion pipe, the multi-chamber insertion pipe including a first channel and a second channel, and the side wall of the multi-chamber insertion pipe being respectively provided with a first opening communicating with the first channel and a second opening communicating with the second channel, the first opening and the second opening being axially staggered along the multi-chamber insertion pipe; Characterized in that, The pipe connector includes: A first pipe body; A second pipe body axially butted against the first pipe body to form an insertion channel for the multi-chamber insertion pipe to pass through; Wherein, when the multi-chamber insertion pipe passes through the insertion channel, the first opening is located within the first pipe body and the second opening is located within the second pipe body; The first pipe body and the second pipe body are separate components so as to install a seal between the first opening and the second opening along the axis of the multi-chamber insertion pipe.
2. The pipe connector according to claim 1, Characterized in that, The first channel is an instrument working channel, and the first pipe body includes a first main pipeline and a first branch pipeline that communicate with each other; the first main pipeline is butted against the second pipe body to form the insertion channel; one end of the first branch pipeline away from the first main pipeline forms an instrument inlet; when the multi-chamber insertion pipe passes through the insertion channel, the first opening is disposed opposite to the first branch pipeline to communicate the first channel and the first branch pipeline; And / or, The second channel is an instrument working channel, and the second pipe body includes a second main pipeline and a second branch pipeline that communicate with each other; the second main pipeline is butted against the first pipe body to form the insertion channel; one end of the second branch pipeline away from the second main pipeline forms an instrument inlet; when the multi-chamber insertion pipe passes through the insertion channel, the second opening is disposed opposite to the second branch pipeline to communicate the second channel and the second branch pipeline.
3. The pipe connector according to claim 2, Characterized in that, The pipe connector further includes: A cover body sealingly connected to one end of the first pipe body away from the second pipe body, and a circumferential positioning structure is provided between the cover body and the first pipe body; The cover body is further used for fixedly connecting with the end of the multi-chamber insertion pipe.
4. The pipe connector according to claim 3, Characterized in that, The circumferential positioning structure includes a clamping component, and the clamping component includes a clamping groove and a clamping head that cooperate with each other, the clamping groove is provided on one of the cover body and the first pipe body, and the clamping head is provided on the other of the cover body and the first pipe body.
5. The pipe connector according to claim 4, Characterized in that, The number of the clamping components is greater than or equal to two groups, and the sizes, depths, shapes and / or colors between different groups of clamping components are different from each other; Or, The number of the clamping components is two groups, the cover body is provided with a first clamping groove and a second clamping head, the first pipe body is provided with a first clamping head and a second clamping groove, the first clamping groove cooperates with the first clamping head, and the second clamping head cooperates with the second clamping groove.
6. The pipe connector according to claim 3, wherein, a first sealing portion and / or a second sealing portion are provided on the surface of the cover body facing the multi-cavity insertion tube, the first sealing portion is used to block the first channel, and the second sealing portion is used to block the second channel.
7. The pipe connector according to claim 6, wherein, the first sealing portion is a first sealing column in a conical shape, the head end size of the first sealing column is smaller than the tail end size connected to the cover body, and the tail end size of the first sealing column is larger than the size of the first channel; the second sealing portion is a second sealing column in a conical shape, the head end size of the second sealing column is smaller than the tail end size connected to the cover body, and the tail end size of the second sealing column is larger than the size of the second channel.
8. The pipe connector according to any one of claims 3 to 7, wherein, the multi-cavity insertion tube further includes a third channel, and the cover body further includes a through hole communicating with the third channel for a component disposed in the third channel to pass out from the through hole.
9. The pipe connector according to any one of claims 1 to 7, wherein, the first channel is a water supply channel or a suction channel, the second channel is an instrument working channel, and a first joint communicating with the outside is provided on the side wall of the first pipe body, and the first joint communicates with the first opening.
10. The pipe connector according to claims 2 to 7, wherein, the second channel serves as both an instrument working channel and a suction channel, and a second joint communicating with the outside is further provided on the side wall of the second branch pipe; a glue dispensing groove is provided at one end of the second main pipe away from the first pipe body, and the glue dispensing groove is used for dispensing glue to seal the connection between the end of the second main pipe away from the first pipe body and the multi-cavity insertion tube.
11. An endoscope, wherein, it includes a multi-cavity insertion tube and the pipe connector according to any one of claims 1 to 10.