Endoscope and pipeline connecting piece

Abstract

The utility model relates to the technical field of medical instruments, and particularly discloses a pipeline connecting piece which is used for being assembled with a multi-cavity insertion tube, and the multi-cavity insertion tube comprises a first opening hole and a second opening hole which are formed in the side wall of the multi-cavity insertion tube, communicate with a first channel and a second channel in the multi-cavity insertion tube respectively and are formed in a staggered mode in the axial direction. The pipeline connecting piece comprises a first pipe body and a second pipe body, and the second pipe body and the first pipe body are in butt joint in the axial direction to form an insertion channel allowing a multi-cavity insertion pipe to penetrate through. When the multi-cavity insertion tube is arranged in the insertion channel in a penetrating mode, the first open hole is located in the first tube body, and the second open hole is located in the second tube body. The first pipe body and the second pipe body are split parts so that a sealing piece can be installed between the first open hole and the second open hole in the axial direction of the multi-cavity insertion pipe. By applying the pipeline connecting piece provided by the utility model, accurate butt joint is easy to realize, the assembly process requirement is low, and the product yield is high. The invention further discloses an endoscope with the pipeline connecting piece, and the endoscope has the same technical effects as the pipeline connecting piece.

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 common medical device, endoscope equipment is increasingly widely used in daily medical operations. An endoscope includes a slender and flexible insertion part. The doctor inserts the endoscope into the human body through the natural cavity or minimally invasive incision to observe the internal conditions of the human body. In order to achieve multiple functions, the insertion part of the endoscope generally includes a variety of pipes and harnesses, such as clamp tubes, water and gas tubes, spring tubes, signal wires, optical fibers, etc. The harnesses and pipes are closely arranged inside the insertion tube.

[0003] With the advancement of science and technology and the advocacy of refined medical concepts, endoscopes are developing in the direction of thinner, multifunctional, highly stable and low-cost. However, as the outer diameter of the insertion tube decreases, the tightness between the contents increases. When the endoscope is in use, the various pipes inside the insertion tube are prone to mutual compression, resulting in increased equipment failure rate and reduced reliability. Multi-lumen insertion tubes can solve this problem well. By opening various functional pipes in one catheter, it not only avoids interference and friction between the pipes, but also saves space and reduces the outer diameter of the insertion tube.

[0004] Among them, part of the pipeline in the insertion tube (such as the instrument channel) needs to be connected to the corresponding external interface (such as the instrument inlet). For this reason, in the related art, the multi-lumen insertion tube is inserted into the main channel of the pipeline connector, and openings are opened on the side walls of part of the pipeline in the multi-lumen insertion tube to communicate with the branch channels of the pipeline connector respectively, thereby realizing the connection of the pipeline. Specifically, the pipeline connector provided in the related art is usually cut into a front shell and a rear shell along the longitudinal direction. After the multi-lumen insertion tube and related components are positioned in the front shell or the rear shell, the front shell and the rear shell are bonded and fixed together.

[0005] However, the inventors of the present application have discovered that during the assembly of the above-mentioned pipe connector, an offset is likely to occur between the front and rear shells, which can easily cause the device to get stuck, so higher requirements are placed on the assembly process and the product yield is low.

[0006] Therefore, how to reduce the assembly process requirements of pipe connectors and improve product yield is a problem that technical personnel in this field need to solve. Utility Model Content

[0007] In view of this, the purpose of the present application is to provide an endoscope and a pipe connector, the structural design of which can effectively reduce the assembly process requirements of the pipe connector and improve the product yield.

[0008] In order to achieve the above objectives, this application provides the following technical solutions:

[0009] A pipe connector, used for assembling with a multi-cavity insertion tube, the multi-cavity insertion tube comprises a first channel and a second channel, and the side wall of the multi-cavity insertion tube is respectively provided with a first opening connected to the first channel and a second opening connected to the second channel, the first opening and the second opening are staggered along the axial direction of the multi-cavity insertion tube; the pipe connector comprises:

[0010] first tube body;

[0011] A second tube body, which is axially connected to the first tube body to form an insertion channel for the multi-lumen insertion tube to pass through;

[0012] Wherein, when the multi-lumen insertion tube is inserted into the insertion channel, the first opening is located in the first tube body, and the second opening is located in the second tube body;

[0013] The first tube body and the second tube body are separate components, so that a sealing member can be installed between the first opening and the second opening along the axial direction of the multi-lumen insertion tube.

[0014] Optionally, in the above-mentioned pipeline connector, the first channel is an instrument working channel, the first tube body includes a first main pipeline and a first branch pipeline that are interconnected; the first main pipeline is butted with the second tube 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-lumen insertion tube is inserted into the insertion channel, the first opening is arranged opposite to the first branch pipeline to connect the first channel and the first branch pipeline;

[0015] and / or,

[0016] The second channel is an instrument working channel, and the second tube body includes a second main pipeline and a second branch pipeline that are interconnected; the second main pipeline is connected to the first tube body to form the insertion channel; an instrument entrance is formed at one end of the second branch pipeline away from the second main pipeline; when the multi-lumen insertion tube is inserted into the insertion channel, the second opening is arranged opposite to the second branch pipeline to connect the second channel and the second branch pipeline.

[0017] Optionally, in the above-mentioned pipeline connector, the pipeline connector further includes:

[0018] a cover body, which is sealed and connected to an end of the first tube body away from the second tube body, and a circumferential positioning structure is provided between the cover body and the first tube body;

[0019] The cover body is also used to be fixedly connected to the end of the multi-lumen insertion tube.

[0020] Optionally, in the above-mentioned pipe connector, the circumferential positioning structure includes a clamping assembly, the clamping assembly includes a clamping groove and a clamping head that cooperate with each other, the clamping groove is arranged on one of the cover body and the first tube body, and the clamping head is arranged on the other of the cover body and the first tube body. Optionally, in the above-mentioned pipe connector, the number of the clamping assemblies is greater than or equal to two groups, and the sizes, depths, shapes and / or colors of the clamping assemblies in different groups are different from each other;

[0021] or,

[0022] There are two groups of the clamping components. The cover body is provided with a first clamping slot and a second clamping head. The first tube body is provided with a first clamping head and a second clamping slot. The first clamping slot cooperates with the first clamping head, and the second clamping head cooperates with the second clamping slot.

[0023] Optionally, in the above-mentioned pipe connector, a surface of the cover body facing the multi-lumen insertion tube is provided with a first sealing portion and / or a second sealing portion, the first sealing portion is used to block the first channel, and the second sealing portion is used to block the second channel.

[0024] Optionally, in the above-mentioned pipe connector, the first sealing portion is a first conical sealing column, the size of the head end of the first sealing column is smaller than the size of the tail end connected to the cover body, and the size of the tail end of the first sealing column is larger than the size of the first channel;

[0025] The second sealing portion is a conical second sealing column, the head end of the second sealing column is smaller than the tail end connected to the cover body, and the tail end of the second sealing column is larger than the second channel.

[0026] Optionally, in the above-mentioned pipe connector, the multi-cavity insertion tube further includes a third channel, and the cover body further includes a through hole communicated with the third channel, so that a component inserted in the third channel can pass through the through hole.

[0027] Optionally, in the above-mentioned pipe 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 connected to the outside is provided on the side wall of the first tube body, and the first joint is connected to the first opening.

[0028] Optionally, in the above-mentioned pipe connector, the second channel serves as both an instrument working channel and a suction channel, and a second joint connected to the outside is also provided on the side wall of the second branch pipe; a glue dispensing groove is provided at the end of the second main pipe away from the first tube body, and the glue dispensing groove is used for glue dispensing so that the end of the second main pipe away from the first tube body is sealed and connected to the multi-cavity insertion tube.

[0029] By using the pipe connector provided by the present application, the first tube body and the second tube body are butted together along the axial direction, the multi-cavity insertion tube can be inserted into the insertion channel formed by the first tube body and the second tube body, and the first opening is located in the first tube body, and the second opening is located in the second tube body. The first tube body and the second tube body are split parts, so that the seal can be installed between the first opening and the second opening along the axial direction of the multi-cavity insertion tube, thereby achieving a sealed isolation between the first opening and the second opening. As set up above, compared with the conventional pipe connector that is divided into the front and rear shells along the longitudinal direction, the first tube body and the second tube body are split parts along the axial direction, which is convenient for the installation of the seal, and the contact end surface between the first tube body and the second tube body is significantly less than the contact end surface of the front and rear shells, which is easy to achieve precise docking. In addition, the docking point 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, 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 pipe connectors. Since the above pipe connector has the above technical effects, the endoscope having the pipe connector should also have corresponding technical effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 is a cross-sectional schematic diagram of a multi-lumen insertion tube;

[0033] Figure 2 It is a schematic cross-sectional view of the first opening position of the multi-lumen insertion tube;

[0034] Figure 3 It is a cross-sectional schematic diagram of the second opening position of the multi-lumen insertion tube;

[0035] Figure 4 This 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 of ;

[0037] Figure 6 for Figure 4 Another cross-sectional schematic diagram of;

[0038] Figure 7 for Figure 4 Explosion diagram of

[0039] Figure 8 for Figure 7 Schematic cross-sectional view of ;

[0040] Fig. 9 It is a schematic diagram of the structure of the cover body.

[0041] The following are marked in the accompanying drawings:

[0042] Multi-lumen 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] The first tube body 11, the second tube body 12, the insertion channel 13, the second main pipeline 121, the second branch pipeline 122, the instrument inlet 123, the cover body 14, the clamp 141, the first sealing part 142, the second sealing part 143, the through hole 144, the first joint 15, the second joint 16, the glue dispensing groove 124, the gasket 125, the first sealing ring 17, the second sealing ring 18, and the retaining ring 19. DETAILED DESCRIPTION

[0044] The embodiments of the present application disclose an endoscope and a pipe connector to reduce the assembly process requirements of the pipe connector and improve the product yield.

[0045] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0046] An endoscope usually includes an insertion part, an operating part, a cable, a water supply line, and a suction line. The insertion part can enter the human body, and can further include a hard part at the head end, a bending part, and an insertion tube according to the function. The operating part includes operating parts such as buttons and hand wheels, which are used to control the shape of the insertion part and realize auxiliary functions. The cable is used to realize the communication between the endoscope and the host, the water supply line is used to realize the water supply function, and the suction line is used to realize the suction function.

[0047] The pipe connector provided in the present application can be assembled inside the housing of the operating part, and can be specifically installed and positioned by the limiting structure inside the housing. The pipe connector in the present application is used to assemble with the multi-cavity insertion tube to form a Figures 4 to 8 The insertion tube assembly is shown in Figure 1. For the construction of the multi-lumen insertion tube, 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 may respectively correspond to but not limited to a cable channel, a traction rope channel, a water supply channel, a suction channel and an instrument working channel, etc. After the multi-lumen insertion tube is assembled on the pipe connector, the traction rope in the traction rope channel is extended from the pipe connector and connected to the winding wheel assembly of the operating part. The signal line in the cable channel is extended from the pipe connector and merged into the cable line after passing through the buttons of the operating part. The number of each type of channel is not limited to one, and may also be set to multiple as needed. Please refer to Figure 2 and Figure 3 In order to facilitate connection with the pipeline 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 staggered along the axial direction of 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 is arranged one-to-one, and the number of the second openings 27 is the same as the number of the second channels 22 and is arranged one-to-one.

[0048] In some embodiments, see Figure 4-Figure 8 The pipe connector provided in the present application includes a first tube body 11 and a second tube body 12. The first tube body 11 and the second tube body 12 are butted axially to form an insertion channel 13 for the multi-cavity insertion tube 2 to pass through. When the multi-cavity insertion tube 2 is passed through the insertion channel 13, the first opening 26 is located in the first tube body 11, and the second opening 27 is located in the second tube body 12; the first tube body 11 and the second tube body 12 are separate components, so that a seal can be installed between the first opening 26 and the second opening 27 along the axial direction of the multi-cavity insertion tube 2. The first tube body 11 can be an integrally formed component, and the second tube body 12 can also be an integrally formed component. The first tube body 11 and the second tube body 12 can be specifically limited by an axis and a shoulder structure. By setting the seal, the first opening 26 and the second opening 27 are not connected, so that after the multi-cavity insertion tube 2 is inserted into the pipe connector, the functions of the first channel 21 and the second channel 22 can be realized respectively without affecting each other. It is understandable that the sealing member can be installed at the butt joint between the first tube body 11 and the second tube body 12 , or can be installed inside the first tube body 11 and / or the second tube 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, and the second tube body 12 includes a second main pipeline 121 and a second branch pipeline 122 that are interconnected; the second main pipeline 121 is connected to the first tube body 11 to form an insertion channel 13; an instrument inlet 123 is formed at one end of the second branch pipeline 122 away from the second main pipeline 121; when the multi-cavity insertion tube 2 is inserted into the insertion channel 13, the second opening 27 is arranged opposite to the second branch pipeline 122 to connect the second channel 22 and the second branch pipeline 122. The second main pipeline 121 can be a straight tube, and the second branch pipeline 122 is inclined at a certain angle to the second main pipeline 121. The second tube body 12 is designed with the second main pipeline 121 and the second branch pipeline 122, and the multi-cavity insertion tube 2 can be inserted into the second main pipeline 121, and the treatment instrument can be inserted from the second branch pipeline 122 and enter the second channel 22 through the second opening 27, so as to be sent into the insertion part along the second channel 22 to perform corresponding operations. The above-described structure is simple and compact, occupies little space, and is easy to assemble. The second trunk pipeline 121 and the second branch pipeline 122 can be specifically integrally injection molded. The second trunk pipeline 121 and the second branch pipeline 122 are integrally molded, which is convenient for processing and manufacturing, and the two are integrally molded without further assembly, which simplifies the operation and avoids displacement of the channel connection due to assembly tolerance, which affects the smoothness of the device in and out. In addition, the integrated structure can also provide good sealing.

[0052] In some embodiments, the first channel 21 and the second channel 22 may also both be instrument working channels, and then the corresponding first tube body 11 and the second tube body 12 may both adopt the above-mentioned configuration.

[0053] In some embodiments, when the first channel 21 is an instrument working channel, the inner wall of the first trunk pipeline and the first branch pipeline at the junction is connected in a curved transition. Specifically, the inner wall of the first trunk pipeline and the first branch pipeline at the junction adopts a circular arc surface transition, and the arc surface or circular arc surface transition can improve the passability of the instrument. Similarly, when the second channel 22 is an instrument working channel, the inner wall of the second trunk pipeline 121 and the second branch pipeline 122 at the junction can also be connected in a curved transition.

[0054] In some embodiments, see Fig. 9The pipe connector also includes a cover 14, which is sealed and connected to one end of the first tube 11 away from the second tube 12, and a circumferential positioning structure is provided between the cover 14 and the first tube 11; the cover 14 is also used to be fixedly connected to the end of the multi-lumen insertion tube 2. The circumferential positioning structure can realize the circumferential positioning between the cover 14 and the first tube 11. The cover 14 is fixed to the end of the multi-lumen insertion tube 2, and the assembly relationship between the two is determined by the different channel sizes of the multi-lumen insertion tube 2, that is, the relative position of the cover 14 and the multi-lumen insertion tube 2 is determined, so the circumferential positioning of the multi-lumen insertion tube 2 and the first tube 11 can be realized by the circumferential positioning of the cover 14 and the first tube 11. That is, the position of the opening of the instrument working channel (that is, the first opening 26 and / or the second opening 27) can be clearly defined by the circumferential positioning structure, so as to facilitate the adjustment of the first opening 26 to the position facing the first branch pipeline and / or the adjustment of the second opening 27 to the position facing the second branch pipeline 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-lumen insertion tube 2, there is no need to accurately locate the circumferential position of the multi-lumen insertion tube 2, and thus there is no need to set a circumferential positioning structure between the cover body 14 and the first tube body 11, and there is even no need to set the above-mentioned cover body 14.

[0055] Specifically, in some embodiments, the circumferential positioning structure may include a snap-in assembly, which includes a card slot and a card head 141 that cooperate with each other, the card slot is arranged on one of the cover body 14 and the first tube body 11, and the card head 141 is arranged on the other of the cover body 14 and the first tube body 11. The cover body 14 and the first tube body 11 are positioned by the cooperation of the card slot and the card head 141, and the assembly is convenient. Specifically, the card slot and the card head 141 can be interference fit, and the positioning can be achieved by the interference fit, and the connection can be reliably fixed. Alternatively, the card head 141 and the card slot can also be clearance fit or transition fit, and the fixed connection between the cover body 14 and the first tube body 11 can be achieved by combining glue dispensing. In other embodiments, the circumferential positioning structure can also be an indicator mark for assembly reference, as long as the circumferential installation position of the cover body 14 and the first tube body 11 can be determined.

[0056] In some embodiments, the number of the snap-fit ​​components may be greater than or equal to two groups. To avoid installation errors, foolproof design is required to make the assembly method of the cover body 14 and the first tube body 11 unique and easy to assemble. Specifically, when the number of the snap-fit ​​components is greater than or equal to two groups, the size, depth, shape and / or color of the snap-fit ​​components in different groups may be different to make the assembly method of the cover body 14 and the first tube body 11 unique. For example, large teeth and small teeth may be provided on the upper end surface of the cover body 14 to respectively cooperate with the large groove and small groove on the first tube body 11.

[0057] Alternatively, when there are two sets of snap-fit ​​components, a first slot and a second clamp may be provided on the cover 14 , and a first clamp and a second slot may be provided on the first tube 11 , so that the assembly method of the cover 14 and the first tube 11 is uniquely determined.

[0058] Further, in some embodiments, the surface of the cover body 14 facing the multi-lumen insertion tube 2 is provided with a first sealing portion 142 and / or a second sealing portion 143, 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 the corresponding functions such as water delivery or suction can be achieved, so that the liquid can only flow in the corresponding sealed area without infiltrating into other areas. The number of the first sealing portion 142 and the number of the second sealing portion 143 are set accordingly according to the number of the first channel 21 and the second channel 22, and are not specifically limited here.

[0059] When the cover body 14 is provided with a first sealing portion 142 and a second sealing portion 143, since the sizes of the various channels in the multi-lumen insertion tube 2 are usually different (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 also different accordingly, so the assembly method of the cover body 14 and the multi-lumen 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, and 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, so 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. The first sealing portion 142 is configured as above, with a simple structure and reliable sealing.

[0061] In some embodiments, the second sealing portion 143 may also adopt the same structure as the first sealing portion 142, that is, the second sealing portion 143 is a conical second sealing column, 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 sealing pads, sealing rings, and labyrinth seals.

[0062] In some embodiments, the multi-lumen insertion tube 2 also includes a third channel 22, and the cover body 14 also includes a through hole 144 connected to the third channel 22, so that components inserted in the third channel 22 can pass through the through hole 144. The third channel 22 can specifically be a traction rope and / or cable channel, and the through hole 144 is used to pass the traction rope and / or cable. The traction rope and / or cable pass through the through hole 144 to ensure that the traction rope and cable are connected to the bending component and the cable line to achieve angle bending function and complete communication. The number and position of the specific through holes 144 can be flexibly set according to the number and position of the third channel 22, and are not specifically limited here. For example, Figure 1 As shown, in the case where a plurality of third channels 22 are included, and one of the third channels 22 is a cable channel and the other third channels 22 are traction rope channels, a plurality of through holes 144 may be correspondingly provided on the cover body 14, and correspond to the corresponding cable channels and traction rope channels respectively. The through holes 144 and the cable channels and traction rope channels may correspond one to one, or one through hole 144 may correspond to multiple traction rope channels, or one through hole 144 may correspond to a combination of one cable channel and at least one traction rope channel.

[0063] For example, in this embodiment, the first channel 21 is a water delivery channel or a suction channel, the second channel 22 is an instrument working channel, and a first connector 15 communicating with the outside is provided on the side wall of the first tube body 11, and the first connector 15 is communicated with the first opening 26. In this way, the first tube body 11 can form a small three-way structure, and the liquid can enter the first channel 21 from the first connector 15 through the first opening 26, and be sent to the insertion part along the first channel 21, or realize the suction from the insertion part along the first channel 21, through the first opening 26 to the first connector 15. The first connector 15 can specifically adopt a pagoda connector to connect to an external pipeline.

[0064] It can be understood that, in order to facilitate the smooth flow of fluid between the first connector 15 and the first opening 26, there is a preset gap between the inner wall of the first tube body 11 and the outer wall of the multi-lumen insertion tube 2, and the preset gap can be greater 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 connector 15 and the first opening 26 are located at the same axial position (that is, the first connector 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 radially recessed at the axial position to form an annular groove, and the first connector 15 is connected to the first opening 26 through the annular groove, thereby forming a smooth fluid channel between the first connector 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, and a second connector 16 communicating with the outside is also provided on the side wall of the second branch pipeline 122; a glue dispensing groove 124 is provided at one end of the second main pipeline 121 away from the first tube body 11, and the glue dispensing groove 124 is used for dispensing glue to seal the end of the second main pipeline 121 away from the first tube body 11 with the multi-lumen insertion tube 2. The second branch pipeline 122 can form a small tee structure. The second connector 16 can specifically adopt a pagoda connector to connect an external pipeline. The second connector 16 can specifically be provided at one end of the second branch pipeline 122 away from the second main pipeline 121. After the pipeline connector and the multi-lumen insertion tube 2 are relatively assembled, the pipeline connector and the multi-lumen insertion tube 2 are fixed by glue in the glue groove 124, which not only realizes the fixation of the pipeline connector and the multi-lumen insertion tube 2, but also cooperates with the sealant when the end of the second channel 22 is blocked by the cover body 14 and the instrument inlet 123 of the second branch pipeline 122 is closed, so that a closed cavity is formed between the second branch pipeline 122 and the second channel 22. The closed cavity can serve as a suction channel to ensure that during suction, the liquid can enter the second branch pipeline 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 end of the second trunk pipeline 121 away from the first tube body 11 and the multi-lumen insertion tube 2 can also be sealed by a sealing structure such as a sealing ring or a labyrinth seal.

[0066] In some embodiments, the seal includes a first sealing ring 17 disposed between the second tube body 12 and the first tube body 11. The first sealing ring 17 is used to be sleeved outside the multi-lumen insertion tube 2 to seal and isolate the first tube body 11 and the second tube body 12 from each other. That is, the first sealing ring 17 is used to achieve end face and radial sealing of the first tube body 11 and the second tube body 12 while achieving sealing with the multi-lumen insertion tube 2. As set above, reliable sealing is ensured while simplifying the sealing structure. In other embodiments, the seal may also adopt sealing structures such as sealant and labyrinth seal.

[0067] In some embodiments, a second sealing ring 18 is provided at one end of the first tube body 11 away from the second tube body 12 to seal with the cover body 14. When the multi-lumen 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 sealing ring 17 and the second sealing ring 18 through the first opening 26, and then enter the first channel 21 in the multi-lumen insertion tube 2, and will not enter other areas.

[0068] In order to facilitate the installation of the pipe connector and the operating part, a retaining ring 19 can be provided at one end of the first tube body 11 away from the second tube body 12 and one end of the second tube body 12 away from the first tube body 11, respectively, to cooperate with the limiting structure on the shell of the operating part. The end of the second tube body 12 away from the first tube body 11 serves as the insertion end of the multi-cavity insertion tube 2, and a gasket 125 can be provided outside the retaining ring 19. The gasket 125 is pressed between the retaining ring 19 and the limiting structure on the shell of the operating part to eliminate the installation gap and ensure the tight connection between the first tube body 11 and the second tube 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, please refer to the above embodiments for the beneficial effects of the endoscope.

[0070] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced 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 apparent to those skilled in the art, and the general principles defined herein may 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 conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A pipe connector for assembling with a multi-lumen insertion tube, wherein the multi-lumen insertion tube comprises a first channel and a second channel, and the side wall of the multi-lumen insertion tube is respectively provided with a first opening communicating with the first channel and a second opening communicating with the second channel, wherein the first opening and the second opening are staggered along the axial direction of the multi-lumen insertion tube; characterized in that: The pipeline connector comprises: first tube body; A second tube body, which is axially connected to the first tube body to form an insertion channel for the multi-lumen insertion tube to pass through; Wherein, when the multi-lumen insertion tube is inserted into the insertion channel, the first opening is located in the first tube body, and the second opening is located in the second tube body; The first tube body and the second tube body are separate components, so that a sealing member can be installed between the first opening and the second opening along the axial direction of the multi-lumen insertion tube.

2. The pipe connector according to claim 1, characterized in that: The first channel is an instrument working channel, the first tube body comprises a first main tube and a first branch tube which are interconnected; the first main tube is butted with the second tube body to form the insertion channel; an instrument entrance is formed at one end of the first branch tube away from the first main tube; when the multi-lumen insertion tube is inserted into the insertion channel, the first opening is arranged opposite to the first branch tube to connect the first channel and the first branch tube; and / or, The second channel is an instrument working channel, and the second tube body includes a second main pipeline and a second branch pipeline that are interconnected; the second main pipeline is connected to the first tube body to form the insertion channel; an instrument entrance is formed at one end of the second branch pipeline away from the second main pipeline; when the multi-lumen insertion tube is inserted into the insertion channel, the second opening is arranged opposite to the second branch pipeline to connect the second channel and the second branch pipeline.

3. The pipe connector according to claim 2, characterized in that: The pipeline connector also includes: a cover body, which is sealed and connected to an end of the first tube body away from the second tube body, and a circumferential positioning structure is provided between the cover body and the first tube body; The cover body is also used to be fixedly connected to the end of the multi-lumen insertion tube.

4. The pipe connector according to claim 3, characterized in that: The circumferential positioning structure includes a clamping assembly, which includes a clamping groove and a clamping head that cooperate with each other. The clamping groove is arranged on one of the cover body and the first tube body, and the clamping head is arranged on the other of the cover body and the first tube body.

5. The pipe connector according to claim 4, characterized in that: The number of the snap-in components is greater than or equal to two groups, and the sizes, depths, shapes and / or colors of the snap-in components in different groups are different from each other; or, There are two groups of the clamping components. The cover body is provided with a first clamping slot and a second clamping head. The first tube body is provided with a first clamping head and a second clamping slot. The first clamping slot cooperates with the first clamping head, and the second clamping head cooperates with the second clamping slot.

6. The pipe connector according to claim 3, characterized in that: A first sealing portion and / or a second sealing portion is provided on a surface of the cover body facing the multi-lumen 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, characterized in that: The first sealing portion is a first sealing column in a conical shape, the size of the head end of the first sealing column is smaller than the size of the tail end connected to the cover body, and the size of the tail end of the first sealing column is larger than the size of the first channel; The second sealing portion is a conical second sealing column, the head end of the second sealing column is smaller than the tail end connected to the cover body, and the tail end of the second sealing column is larger than the second channel.

8. The pipe connector according to any one of claims 3 to 7, characterized in that: The multi-lumen insertion tube further includes a third channel, and the cover body further includes a through hole communicated with the third channel, so that the components passing through the third channel can pass through the through hole.

9. The pipe connector according to any one of claims 1 to 7, characterized in that: 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 tube body, and the first joint is communicated with the first opening.

10. The pipe connector according to any one of claims 2 to 7, characterized in that: The second channel serves as both an instrument working channel and a suction channel, and a second joint connected to the outside is also provided on the side wall of the second branch pipeline; a glue dispensing groove is provided at the end of the second main pipeline away from the first tube body, and the glue dispensing groove is used for glue dispensing so that the end of the second main pipeline away from the first tube body is sealed and connected to the multi-cavity insertion tube.

11. An endoscope, characterized in that: The invention comprises a multi-lumen insertion tube and a pipeline connector as claimed in any one of claims 1 to 10.

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