Pipe joint rotating structure and endoscope

Abstract

The utility model relates to the technical field of endoscopes, and discloses a pipeline joint rotating structure and an endoscope, and the pipeline joint rotating structure comprises a shell which defines an internal space of the shell; the mounting base is fixed to the shell, the mounting base penetrates through the inner side and the outer side of the shell, a communicating hole penetrating through the mounting base is formed in the mounting base, and the inner space of the shell communicates with the outside through the communicating hole; the pipeline structure comprises an internal pipeline and an external pipeline, the internal pipeline is arranged in the shell and connected with the mounting base, the external pipeline is located on the outer side of the shell and rotatably connected with the mounting base, and the communicating hole is communicated with the internal pipeline and the external pipeline. And the pipeline rotates and is bent, so that the pipeline is blocked, and the liquid feeding and sucking actions are influenced.

Description

TECHNICAL FIELD

[0001] The utility model relates to endoscope technical field, concretely relates to a pipeline joint rotation structure and endoscope. BACKGROUND

[0002] An endoscope is a kind of medical instrument that can enter the body through the oral cavity or other natural holes, and it is convenient for operating personnel to use the probe of the endoscope to find the lesions in the body. Some endoscopes are equipped with pipelines, which can deliver liquid into the patient's body or suck out the effusion at the patient's lesion site through negative pressure to facilitate observation and operation.

[0003] In the related art, a valve is arranged in the endoscope, and the pipeline generally passes through the valve and then transmits out of the shell of the endoscope and communicates with an external mechanism. In some cases, the external mechanism can provide suction to suck out liquid or deliver liquid. However, when the operating personnel actually operate the endoscope for diagnosis and treatment, the position of the endoscope often needs to be frequently adjusted, which easily causes the pipeline to rotate and bend, resulting in blockage of the pipeline and failure to normally complete the liquid delivery or suction operation, causing many inconveniences. SUMMARY

[0004] Therefore, the utility model provides a pipeline joint rotation structure and endoscope to solve the problem that the pipeline rotates and bends during the operation of the operating personnel, causing blockage of the pipeline and affecting the liquid delivery and suction operation, and causing inconvenience.

[0005] In a first aspect, the utility model provides a pipeline joint rotation structure and endoscope, a shell defines the inside space of the shell, a mounting seat is fixed on the shell, the mounting seat penetrates the inside and outside of the shell, and a communication hole penetrating the mounting seat is formed in the mounting seat, and the communication hole communicates the inside space of the shell with the outside, a pipeline structure includes an internal pipeline and an external pipeline, the internal pipeline is arranged in the shell and connected with the mounting seat, the external pipeline is located outside the shell and rotatably connected with the mounting seat, and the communication hole communicates with the internal pipeline and the external pipeline respectively.

[0006] Advantages: the mounting seat with a communication hole is arranged on the shell, and the mounting seat penetrates the inside and outside of the shell, and then the pipeline is divided into an internal pipeline and an external pipeline, the internal pipeline is connected with one end of the mounting seat in the shell, and the external pipeline is rotatably connected with the other end of the mounting seat outside the shell, so as to separate the pipeline, when the operating personnel operates the endoscope, the external pipeline rotates with the adjustment of the operating personnel, and the internal pipeline remains stationary, avoiding rotation and bending of the internal pipeline in the shell, which causes blockage of the internal pipeline and affects the liquid delivery or suction operation.

[0007] In some embodiments, the outer pipeline is provided with at least one connecting ring at the end connected with the mounting base, the connecting ring is arranged around the circumferential side of the outer pipeline, the inner wall of the communication hole is provided with a ring groove matched with the connecting ring, and the groove wall of the ring groove is in abutment with the connecting ring when the connecting ring is located in the ring groove.

[0008] Beneficial effects: the outer pipeline and the mounting base are rotationally connected through the cooperation of the connecting ring and the ring groove, the structure is simple, and the parts are easy to produce and assemble. In addition, the ring groove not only provides a basis for the rotational cooperation of the outer pipeline, but also axially limits the outer pipeline to prevent it from falling off the mounting base, thereby improving the structural reliability.

[0009] In some embodiments, a sealing ring is arranged on the outer pipeline, the sealing ring is in abutment with the circumferential wall of the outer pipeline, and the outer circumferential wall of the sealing ring is in abutment with the hole wall of the communication hole.

[0010] Beneficial effects: the sealing ring is in abutment with the outer pipeline and the communication hole respectively, thereby sealing the connection between the outer pipeline and the mounting base. The outer pipeline can rotate relative to the mounting base while maintaining the sealing of the connection, thereby avoiding adverse conditions such as liquid leakage.

[0011] In some embodiments, the connecting ring is provided with at least a plurality of connecting rings, and the plurality of connecting rings are respectively arranged around the circumferential side of the outer pipeline and in the ring groove.

[0012] Beneficial effects: the plurality of connecting rings further prevent the outer pipeline from falling off the mounting base, thereby improving the structural reliability.

[0013] In some embodiments, the sealing ring is arranged between adjacent connecting rings.

[0014] Beneficial effects: the connecting ring limits the sealing ring to prevent the sealing ring from being axially displaced and thereby being deflected, thereby avoiding affecting the sealing effect.

[0015] In some embodiments, at least two limiting rings are arranged on the outer circumferential wall of the outer pipeline, or at least two limiting rings are arranged on the hole wall of the communication hole, and the sealing ring is arranged between the two limiting rings.

[0016] Beneficial effects: the limiting ring axially limits the sealing ring, which can make the arrangement position of the sealing ring more flexible, and multiple sealing rings can be arranged in cooperation with multiple limiting rings to enhance the sealing effect.

[0017] In some embodiments, a fixed pin is fixedly connected to the mounting base, the housing is provided with a pin hole matched with the fixed pin, and the mounting base is fixedly installed on the housing through the cooperation of the fixed pin and the pin hole.

[0018] Beneficial effects: The mounting base is fixedly connected with the shell through the cooperation of the fixing pin and the pin hole, the connection structure is simple, the shell is easy to process, and the shell and the mounting base are low in assembly difficulty; meanwhile, under the condition that the shell is closed, the shell can press the fixing pin and the pin hole, so that separation of the fixing pin and the pin hole is avoided, and the structural reliability is improved.

[0019] In some embodiments, the external pipeline is a hard pipeline, and an end of the external pipeline away from the shell comprises a pipe joint for connecting with other pipelines.

[0020] Beneficial effects: The external pipeline is arranged as a hard pipeline, so that the external pipeline is prevented from being twisted and bent due to the operation of the operator on the endoscope, and the pipeline is prevented from being blocked; meanwhile, the pipe joint is arranged at the end of the external pipeline, so that the operator can conveniently replace the pipeline connected with the external pipeline, and the operator can conveniently disassemble and clean the pipeline.

[0021] In the second aspect, the utility model also provides an endoscope, which comprises the pipeline joint rotating structure, and further comprises a valve body arranged in the shell and communicated with an end of the internal pipeline away from the mounting base.

[0022] Beneficial effects: The valve body controls the suction or delivery of liquid by the pipeline structure, and divides the pipeline structure into the external pipeline and the internal pipeline connected with the mounting base respectively, so that linkage of the internal pipeline and the external pipeline is avoided; when the external pipeline is deflected due to the operation of the operator, the relative rotation of the external pipeline and the mounting base is avoided, so that the internal pipeline is prevented from being twisted and bent, the pipeline structure is prevented from being blocked, and the suction or delivery of liquid is prevented from being affected.

[0023] In some embodiments, a valve pin is arranged on the valve body, a mounting hole adapted to the valve pin is arranged on the shell, the valve body is arranged in the shell, the valve pin is inserted into the mounting hole, and the internal pipeline is connected with the valve body by adhesion.

[0024] Beneficial effects: The valve body is fixed in the shell through the cooperation of the valve pin and the mounting hole, the valve pin and the mounting hole are pressed tightly under the condition that the shell is closed, and the valve body is prevented from being separated from the shell, so that the stability of the valve body is improved; and since the valve pin is fixed with the shell, the valve body, the liquid inlet of the endoscope or the liquid suction inlet of the endoscope is prevented from driving the internal pipeline to move when the operator operates the endoscope, so that the pipeline is prevented from being bent and blocked. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the specific embodiments or related art of the present application, the drawings needed to be used in the description of the specific embodiments or related art will be briefly introduced. Obviously, the drawings described below are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0026] Figure 1 An internal structure diagram of a pipe joint rotating structure of an embodiment of the present application;

[0027] Figure 2 An exploded structure diagram of the interior of a pipe joint rotating structure of an embodiment of the present application;

[0028] Figure 3 For Figure 2 A local enlarged diagram of the middle A.

[0029] Explanation of reference signs:

[0030] 100, housing; 200, mounting seat; 201, communication hole; 202, fixed pin; 203, pin hole; 300, pipe structure; 301, internal pipe; 302, external pipe; 3021, connecting ring; 3022, limiting ring; 3023, pipe joint; 3024, sealing ring; 400, valve body; 401, valve pin; 402, mounting hole. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0032] The operating handle part of an endoscope generally collects a plurality of structures for realizing specific functions of the endoscope. The light guide hose, insertion tube, eyepiece part of the operating handle and auxiliary operating structures for realizing other auxiliary functions all need to pass through the handle part or be installed on the handle part. In some endoscopes, a pipe structure extending into the patient's body along with the insertion tube needs to be provided, so as to realize the function of sucking or delivering liquid from or to the patient's body.

[0033] In the related art, a pipe structure for sucking or conveying liquid usually adopts a whole hose connected to a valve body for controlling liquid on-off. However, in the actual operation of an operator, the posture of an endoscope needs to be changed constantly to ensure that an insertion tube enters the body along the natural orifice of a patient's body. In the operation process, the handle needs to change position, so the pipe is easy to rotate and bend with the change of the handle angle, which can easily cause the rotation and bending of the pipe, resulting in the blockage of the pipe. If the blockage position appears outside the handle, the operator can easily dredge the blockage position by manual operation. However, if the blockage position appears inside the handle, the operator cannot easily observe the blockage position, so the pipe posture cannot be adjusted in time, causing a lot of unnecessary trouble.

[0034] The present application provides a pipe joint rotating structure and an endoscope. The pipe structure is divided into an internal pipe and an external pipe and is connected to the mounting seat. When an operator operates, the relative rotation of the external pipe and the mounting seat adapts to the action of the operator, avoids the blockage of the pipe caused by the twisting and bending of the internal pipe, and improves the convenience of operation and the reliability of the device.

[0035] The embodiments of the present application will be described below in combination with Figures 1 to 3 The embodiments of the present application will be described below in combination with

[0036] According to the embodiments of the present application, on the one hand, a pipe joint rotating structure and an endoscope are provided. Please refer to Figure 1 and Figure 2 , which comprise: a shell 100 defining an internal space of the shell 100; a mounting seat 200 fixed to the shell 100, the mounting seat 200 penetrating the inside and outside of the shell 100, and a communication hole 201 penetrating the mounting seat 200 is formed on the mounting seat 200, the communication hole 201 communicates the internal space of the shell 100 with the outside; a pipe structure 300 comprising an internal pipe 301 and an external pipe 302, the internal pipe 301 is arranged in the shell 100 and connected to the mounting seat 200, the external pipe 302 is located outside the shell 100 and connected to the mounting seat 200 rotatably, and the communication hole 201 communicates with the internal pipe 301 and the external pipe 302 respectively.

[0037] Specifically, the shell 100 comprises an upper shell 100 and a lower shell 100, the upper shell 100 and the lower shell 100 are limited and fixed by the pin hole 203, and are connected to each other by fasteners to enhance the fixation. The mounting seat 200 is arranged on the shell 100, and it should be noted that the specific connection manner of the mounting seat 200 and the shell 100 is not limited in the embodiment, the mounting seat 200 can be fixedly arranged on the shell 100 by cooperation of the pin hole 203 and the fixing pin 202, in some embodiments not shown, the mounting seat 200 can also be arranged on the shell 100 by adhesion, fastener connection and the like, and the mounting seat 200 can also be integrally injection molded with the shell 100.

[0038] In addition, it should be noted that the specific form of the rotating connection between the external pipeline 302 and the mounting seat 200 is not limited in the embodiment, which can realize the communication between the external pipeline 302 and the communication hole 201 of the mounting seat 200, and realize the relative rotation between the external pipeline 302 and the mounting seat 200.

[0039] In the embodiment, the mounting seat 200 provided with the communication hole 201 is arranged on the shell 100, and the mounting seat 200 penetrates the inside and outside of the shell 100, and then the pipeline is divided into the internal pipeline 301 and the external pipeline 302, the internal pipeline 301 is connected with one end of the mounting seat 200 inside the shell 100, and the external pipeline 302 is rotatably connected with the other end of the mounting seat 200 outside the shell 100, so as to separate the pipeline, when the operator operates the endoscope, the external pipeline 302 rotates with the adjustment of the operator, and the internal pipeline 301 remains stationary, avoiding the rotation and bending of the part of the internal pipeline 301 inside the shell 100, which leads to the blockage of the internal pipeline 301, and further affects the liquid sending or liquid suction action.

[0040] Please refer to Figure 2 and Figure 3 In some embodiments, the end connected with the mounting seat 200 of the external pipeline 302 is provided with at least one connecting ring 3021, the connecting ring 3021 surrounds the circumferential side of the external pipeline 302, the inner wall of the communication hole 201 has a ring groove matched with the connecting ring 3021, and the groove wall of the ring groove abuts against the connecting ring 3021 when the connecting ring 3021 is located in the ring groove.

[0041] Specifically, the specific form of the mounting seat 200 is not limited in the embodiment, and in some embodiments, the mounting seat 200 is divided into two symmetrical parts along a plane in which the axis is located, the ring groove is divided into two half rings, and the two half rings are aligned with the connecting ring 3021 and spliced to form a complete ring groove during assembly, so as to limit the connecting ring 3021 in the ring groove. It should be noted that the number of ring grooves is not limited in the present application, and the ring grooves can be matched with and limited to a single connecting ring 3021, or can simultaneously accommodate all the connecting rings 3021, and the two connecting rings 3021 at both ends of the plurality of connecting rings 3021 along the axis direction of the outer pipeline 302 are limited by the two groove walls opposite to each other along the axis direction of the ring groove, thereby achieving axial limitation and radial rotation cooperation of the outer pipeline 302. The two half rings of the mounting seat 200 can be connected into an integral mounting seat 200 by bonding, or can be connected into an integral mounting seat 200 by fasteners.

[0042] In addition, in some embodiments, the mounting seat 200 is an integral body made by integral molding, and the end of the outer pipeline 302 connected with the mounting seat 200 is elastic. During assembly, the operator compresses the end of the outer pipeline 302 to cause elastic deformation, so as to insert the outer pipeline 302 into the communication hole 201 of the mounting seat 200. When the connecting ring 3021 reaches the position of the ring groove, the end of the outer pipeline 302 restores the shape under the action of the elastic force, thereby completing the assembly with the mounting seat 200.

[0043] In the embodiment, the outer pipeline 302 and the mounting seat 200 are rotationally connected through the cooperation of the connecting ring 3021 and the ring groove, which is simple in structure and easy to produce and assemble parts. At the same time, the ring groove not only provides the basis for the rotational cooperation of the outer pipeline 302, but also axially limits the outer pipeline 302 to prevent the outer pipeline 302 from falling off the mounting seat 200, thereby improving the structural reliability.

[0044] In some embodiments, the outer pipeline 302 is provided with a sealing ring 3024, the sealing ring 3024 abuts against the peripheral side wall of the outer pipeline 302, and the outer peripheral side wall of the sealing ring 3024 abuts against the hole wall of the communication hole 201.

[0045] It should be noted that the number of sealing rings 3024 is not limited in the embodiment, and the sealing ring 3024 can be provided with one or more.

[0046] In the embodiment, the sealing ring 3024 abuts against the outer pipeline 302 and the communication hole 201 respectively, seals the connection between the outer pipeline 302 and the mounting seat 200, and enables the outer pipeline 302 to rotate relative to the mounting seat 200 while maintaining the sealing of the connection, thereby avoiding leakage and other adverse conditions.

[0047] In some embodiments, the connecting ring 3021 is provided with at least a plurality of connecting rings 3021, which are respectively arranged around the outer circumferential side of the outer pipe 302 and arranged in the annular groove.

[0048] In the embodiment, the plurality of connecting rings 3021 are arranged, which further prevents the outer pipe 302 from falling off the mounting seat 200 and improves the structural reliability.

[0049] In some embodiments, the sealing ring 3024 is arranged between adjacent connecting rings 3021.

[0050] Specifically, the annular groove formed between adjacent connecting rings 3021 is sized to match the thickness of the sealing ring 3024, thereby facilitating the positioning of the sealing ring 3024.

[0051] In the embodiment, the connecting ring 3021 positions the sealing ring 3024, which prevents the axial displacement of the sealing ring 3024 from causing the sealing ring 3024 to be deflected, thereby avoiding affecting the sealing effect.

[0052] In some embodiments, the outer circumferential side wall of the outer pipe 302 is provided with at least two limiting rings 3022, or the hole wall of the communication hole 201 is provided with at least two limiting rings 3022, and the sealing ring 3024 is arranged between the two limiting rings 3022.

[0053] Specifically, when the sealing ring 3024 is provided in multiple numbers, the sealing ring 3024 can be respectively arranged in each gap formed between the plurality of limiting rings 3022, and can also be distributed in the same gap formed between the connecting rings 3021, thereby forming effective sealing at the connection between the outer pipe 302 and the mounting seat 200. Understandably, the number of sealing rings 3024 can be two, and the number of limiting rings 3022 can be three, in which case the two sealing rings 3024 are respectively arranged in two different gaps between the three limiting rings 3022. The number of sealing rings 3024 can be two, and the number of limiting rings 3022 can also be two, in which case the two sealing rings 3024 are arranged in the same gap between the two limiting rings 3022, and the two sealing rings 3024 can be arranged side by side in the axial direction, or one sealing ring 3024 can be overlapped and sleeved on the other sealing ring 3024.

[0054] In the embodiment, the limiting ring 3022 axially positions the sealing ring 3024, which makes the arrangement position of the sealing ring 3024 more flexible, and multiple sealing rings 3024 can be arranged in cooperation with the plurality of limiting rings 3022 to enhance the sealing effect.

[0055] In some embodiments, the mounting base 200 is fixedly connected with a fixing pin 202, the shell 100 is provided with a pin hole 203 matched with the fixing pin 202, and the mounting base 200 is fixedly mounted on the shell 100 through cooperation of the fixing pin 202 and the pin hole 203.

[0056] In the embodiment, the mounting base 200 is fixedly connected with the shell 100 through cooperation of the fixing pin 202 and the pin hole 203, the connection structure is simple, the shell 100 is easy to process, and the shell 100 and the mounting base 200 are low in assembly difficulty, and meanwhile, in the case that the shell 100 is closed, the shell 100 can press the fixing pin 202 and the pin hole 203, so as to avoid separation of the fixing pin 202 and the pin hole 203, thereby improving structural reliability.

[0057] In some embodiments, the external pipeline 302 is a hard pipeline, and an end of the external pipeline 302 away from the shell 100 comprises a pipe joint 3023 for connecting with other pipelines.

[0058] In the embodiment, since the external pipeline 302 is arranged as a hard pipeline, the external pipeline 302 is prevented from being twisted and bent due to operation of the endoscope by an operator, so as to avoid pipeline plugging, and meanwhile, the pipe joint 3023 is arranged at the end of the external pipeline 302, so as to facilitate the operator to replace the pipeline connected with the external pipeline 302, and also facilitate the operator to disassemble and clean the pipeline.

[0059] In some embodiments, the internal pipeline 301 is a soft pipeline, and the internal pipeline 301 is fixedly connected with the mounting base 200 in a bonding manner.

[0060] In the embodiment, since the internal pipeline 301 is a soft pipeline, the internal pipeline 301 is convenient for the operator to bend and arrange according to specific arrangement of other structures in the shell, has high flexibility and large size tolerance, and since the internal pipeline 301 is connected with the mounting base 200 in a bonding manner, no additional mounting structure needs to be arranged, so as to make the structure in the shell 100 of the endoscope more simple and reduce part cost, and meanwhile, the bonding can bring good sealing performance to the connection between the internal pipeline 301 and the mounting base 200.

[0061] According to the embodiment of the utility model, on the other hand, an endoscope is also provided, which comprises the pipeline joint rotating structure, and further comprises a valve body 400 arranged in the shell 100 and in communication with an end of the internal pipeline 301 away from the mounting base 200.

[0062] In the embodiment, the valve body 400 controls the suction or delivery of the liquid by the pipeline structure 300, and divides the pipeline structure 300 into the external pipeline 302 and the internal pipeline 301 connected with the mounting base 200 respectively, avoids linkage between the internal pipeline 301 and the external pipeline 302, and when the external pipeline 302 is deflected by the operation of the operator, the relative rotation between the external pipeline 302 and the mounting base 200 is avoided, so that the external pipeline 302 does not drive the internal pipeline 301 to rotate, to prevent the internal pipeline 301 from being twisted and bent, and to prevent the pipeline structure 300 from being blocked, and to affect the suction or delivery of the liquid.

[0063] In some embodiments, the valve body 400 is provided with a valve pin 401, the shell 100 is provided with a mounting hole 402 matched with the valve pin 401, the valve body 400 is arranged in the shell 100, the valve pin 401 is inserted into the mounting hole 402, and the internal pipeline 301 is adhesively connected with the valve body 400.

[0064] In the embodiment, the valve body 400 is fixed in the shell 100 through cooperation of the valve pin 401 and the mounting hole 402, the valve pin 401 is pressed against the mounting hole 402 in the closed shell 100, the valve body 400 is prevented from being separated from the shell 100, the stability of the valve body 400 is improved, and when the operator operates the endoscope, the valve body 400, the liquid inlet of the endoscope or the liquid suction inlet of the endoscope can be prevented from driving the internal pipeline 301 to move, and the pipeline is prevented from being bent and blocked.

[0065] Although the embodiments of the present application are described in conjunction with the drawings, various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the present application, and such modifications and changes fall within the scope defined by the appended claims.

Claims

1. A pipe joint swivel structure, characterized by, The utility model relates to a pipeline joint rotating structure, which comprises a shell (100), a mounting base (200) fixed on the shell (100), a pipeline structure (300) comprising an internal pipeline (301) and an external pipeline (302), and a valve body (400) arranged in the shell (100) and communicated with one end of the internal pipeline (301) away from the mounting base (200). The shell (100) defines an internal space; the mounting base (200) is fixed on the shell (100) and penetrates the shell (100) from inside to outside, and a communication hole (201) is formed in the mounting base (200) and penetrates the mounting base (200), so that the internal space of the shell (100) is communicated with the outside; the pipeline structure (300) comprises an internal pipeline (301) and an external pipeline (302), wherein the internal pipeline (301) is arranged in the shell (100) and connected with the mounting base (200), the external pipeline (302) is arranged outside the shell (100) and rotatably connected with the mounting base (200), and the communication hole (201) is communicated with the internal pipeline (301) and the external pipeline (302) respectively. The external pipeline (302) is provided with at least one connecting ring (3021) at one end connected with the mounting base (200), the connecting ring (3021) surrounds the circumferential side of the external pipeline (302), the inner wall of the communication hole (201) is provided with a ring groove matched with the connecting ring (3021), and the groove wall of the ring groove is in abutment with the connecting ring (3021) when the connecting ring (3021) is located in the ring groove. The external pipeline (302) is provided with a sealing ring (3024), the sealing ring (3024) is in abutment with the circumferential wall of the external pipeline (302), and the outer circumferential wall of the sealing ring (3024) is in abutment with the hole wall of the communication hole (201).

2. The pipe joint rotation structure according to claim 1, characterized by, The connecting ring (3021) is provided with at least a plurality of connecting rings (3021), and the plurality of connecting rings (3021) surround the circumferential side of the external pipeline (302) and are arranged in the ring groove.

3. The pipe joint rotation structure according to claim 2, characterized by, The sealing ring (3024) is arranged between adjacent connecting rings (3021).

4. The pipe joint rotation structure according to claim 3, characterized by The external pipeline (302) is provided with at least two limiting rings (3022) on the outer circumferential wall, or the hole wall of the communication hole (201) is provided with at least two limiting rings (3022), and the sealing ring (3024) is arranged between the two limiting rings (3022).

5. A pipe joint rotation structure according to claim 3 or 4, characterized in that, The mounting base (200) is fixedly connected with a fixing pin (202), the shell (100) is provided with a pin hole (203) matched with the fixing pin (202), and the mounting base (200) is fixedly installed on the shell (100) through cooperation of the fixing pin (202) and the pin hole (203).

6. The pipe joint rotation structure according to claim 5, wherein The external pipeline (302) is a hard pipeline, and one end of the external pipeline (302) away from the shell (100) comprises a pipe joint (3023) used for connecting with other pipelines.

7. The pipe joint rotation structure according to claim 6, characterized by The utility model relates to a pipeline joint rotating structure, which comprises a shell (100), a mounting base (200) fixed on the shell (100), a pipeline structure (300) comprising an internal pipeline (301) and an external pipeline (302), and a valve body (400) arranged in the shell (100) and communicated with one end of the internal pipeline (301) away from the mounting base (200).

8. The pipe joint rotation structure of claim 1, wherein, The shell (100) defines an internal space; the mounting base (200) is fixed on the shell (100) and penetrates the shell (100) from inside to outside, and a communication hole (201) is formed in the mounting base (200) and penetrates the mounting base (200), so that the internal space of the shell (100) is communicated with the outside; the pipeline structure (300) comprises an internal pipeline (301) and an external pipeline (302), wherein the internal pipeline (301) is arranged in the shell (100) and connected with the mounting base (200), the external pipeline (302) is arranged outside the shell (100) and rotatably connected with the mounting base (200), and the communication hole (201) is communicated with the internal pipeline (301) and the external pipeline (302) respectively.

9. An endoscope characterized by comprising: The utility model relates to a pipeline joint rotating structure, which comprises a shell (100), a mounting base (200) fixed on the shell (100), a pipeline structure (300) comprising an internal pipeline (301) and an external pipeline (302), and a valve body (400) arranged in the shell (100) and communicated with one end of the internal pipeline (301) away from the mounting base (200). The utility model relates to a pipeline joint rotating structure, which comprises a shell (100), a mounting base (200) fixed on the shell (100), a pipeline structure (300) comprising an internal pipeline (301) and an external pipeline (302), and a valve body (400) arranged in the shell (100) and communicated with one end of the internal pipeline (301) away from the mounting base (200). ​ 10. The endoscope of claim 9, wherein, The valve body (400) is provided with a valve pin (401), the shell (100) is provided with a mounting hole (402) matched with the valve pin (401), the valve body (400) is arranged in the shell (100), the valve pin (401) is inserted into the mounting hole (402), and the inner pipeline (301) is adhesively connected with the valve body (400).

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