Bending section and insertion tube connection structure and connection method

Abstract

The present application relates to a bending section and insertion tube connection structure and a connection method. The connection structure comprises a bending section tube member, an insertion tube member, an adapter and a connection member, the adapter being connected to the bending section tube member, the insertion tube member comprising a base material tube and a braided mesh, the base material tube being coated over the braided mesh, the material of the connection member being the same as the material of the base material tube, and the connection member being welded to the base material tube. With respect to the bending section and insertion tube connection structure and the connection method of the present application, the connection member made of the material the same as that of the base material tube of the insertion tube member is selected, such that the connection member can be connected to the base material tube by means of melt bonding, thus ensuring a better connection effect of the connection member and the insertion tube member; and in addition, the adapter is connected to the bending section tube member, and the connection member is fitted over the adapter in a second direction, so as to ensure a better connection effect of the connection member and the adapter, thus ensuring a better fixation effect between the bending section tube member and the insertion tube member made of different materials.

Description

Snake bone insertion tube connection structure and connection method Technical Field

[0001] The present application relates to the technical field of endoscopes, and in particular to a snake bone insertion tube connection structure and a connection method. Background Art

[0002] With the advancement of medical technology, endoscopes have emerged for visually inspecting hard-to-reach locations such as internal organs to observe pathological conditions. Typically, an endoscope consists of a long insertion tube with a handle at the operator's end and a built-in camera or other visual inspection device at the distal end. To maneuver the endoscope within the human body, the endoscope includes a flexible serpentine. This bending adjusts the orientation of the tip of the serpentine, thereby changing the viewing angle.

[0003] Traditionally, the insertion tube, which is covered in a woven mesh structure, has been connected to the serpentine bone only through adhesive bonding. However, this poor adhesion between the tube and the serpentine bone can easily cause the serpentine bone to fall off the tube, potentially leaving it inside a human organ. Summary of the Invention

[0004] Based on this, it is necessary to provide a snake bone insertion tube connection structure and connection method to address the problem of poor fixation effect between the insertion tube and the snake bone.

[0005] According to one aspect of the present application, a snake-bone insertion tube connection structure is provided, comprising a snake-bone tube, an insertion tube, an adapter, and a connector, wherein the snake-bone tube and the insertion tube are spaced apart along a first direction, and the adapter is connected to the snake-bone tube;

[0006] The inserted tube includes a base tube and a woven mesh, the base tube is covered on the woven mesh, the material of the connecting piece is consistent with the material of the base tube, and the connecting piece is welded to the base tube, and the connecting piece is passed through the adapter along a second direction, and the second direction intersects with the first direction.

[0007] In one embodiment, the connecting member includes a first connecting portion and a second connecting portion, the adapter has an annular cross-section perpendicular to the first direction, the first connecting portion is arranged on the outer peripheral surface of the adapter with the axis along the first direction as the axis, the second connecting portion is arranged on the first connecting portion, and the second connecting portion is passed through the adapter.

[0008] In one embodiment, there are multiple second connecting parts, and a plurality of through openings are provided on the outer peripheral surface of the adapter. The multiple second connecting parts are correspondingly passed through the multiple through openings.

[0009] In one embodiment, the first connecting portion is further arranged on the outer circumferential surface of the substrate tube around an axis along the first direction.

[0010] In one embodiment, along the first direction, both ends of the adapter are respectively arranged inside the snake-bone tube and the base tube, and the inner circumference of the snake-bone tube and the inner circumference of the base tube are both in contact with the outer circumference of the adapter.

[0011] In one embodiment, the adapter and the snake-bone tube are both made of metal, and the connecting piece and the base tube are both made of nylon.

[0012] In one embodiment, the snake bone insertion tube connection structure further includes a protective sleeve, which is sleeved on the outer circumference of the base tube and the connecting piece, and an adhesive is provided between the protective sleeve and the connecting piece.

[0013] According to another aspect of the present application, a method for connecting a snake bone insertion tube connection structure is provided, comprising the following steps:

[0014] Connect the adapter to the snake-bone fitting;

[0015] The connecting piece is melt-connected to the base material tube, and the connecting piece is passed through the adapter;

[0016] The inserted tube includes a base tube and a braided mesh, the base tube is covered on the braided mesh, and the material of the connecting piece is consistent with that of the base tube.

[0017] In one embodiment, the step of melting the connecting piece and the base tube and inserting the connecting piece into the adapter comprises:

[0018] Insert the end of the adapter away from the snake tube into the interior of the base tube;

[0019] A connector is injection molded on the outer peripheral surface of the adapter, and the second connector portion of the connector is injected into the plurality of through ports of the adapter, so that the first connector portion of the connector is welded to the base tube.

[0020] Wherein, a plurality of through openings are arranged at intervals on the outer peripheral surface of the adapter around an axis along the first direction, and the second connecting portion and the first connecting portion are an integrally formed structure.

[0021] In one embodiment, the connection method of the snake bone insertion tube connection structure further includes the following steps:

[0022] An adhesive member is provided on the outer peripheral surface of the connecting member;

[0023] The protective sleeve is put on the outer peripheral surface of the snake-bone pipe fitting and the connecting piece, and the protective sleeve and the connecting piece are adhered by an adhesive.

[0024] The above-mentioned snake-bone insertion tube connection structure and connection method select a connecting piece with the same material as the base tube of the insertion tube, so that the connecting piece can be connected to the base tube by melting, ensuring that the connecting piece can have a better connection effect with the insertion tube, and at the same time, it is connected to the snake-bone tube through an adapter, and the connecting piece is passed through the adapter along the second direction to ensure that the connecting piece can have a better connection effect with the adapter, thereby achieving a better fixing effect between the snake-bone tube and the insertion tube of different materials, so that the snake-bone tube is not easy to fall off from the insertion tube during use, effectively reducing medical accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] FIG1 is a schematic structural diagram of a snake bone insertion tube connection structure according to some embodiments of the present application.

[0026] FIG2 is a partial structural diagram of the snake bone insertion tube connection structure of other embodiments of the present application.

[0027] FIG3 is a schematic structural diagram of a snake bone insertion tube connection structure according to other embodiments of the present application.

[0028] FIG4 is a schematic structural diagram of an adapter of a snake bone insertion tube connection structure in some embodiments of the present application.

[0029] Reference numerals: 1. snake-bone pipe fitting; 2. insert pipe fitting; 3. adapter; 31. through-port; 4. connector; 41. first connector; 42. second connector; 5. protective cover; 6. adhesive member. DETAILED DESCRIPTION

[0030] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0031] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0032] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0033] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0034] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0035] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only embodiment.

[0036] Current endoscopes consist of a handle and an insertion section. The end of the insertion section closer to the handle is called the "proximal end," while the end farther from the handle is called the "distal end." The insertion section of an endoscope is equipped with a serpentine segment, whose inner cavity is often used to accommodate components such as instrument tubes, signal cables, and wire ropes. The bending direction and degree of the serpentine segment are changed by the traction of the wire rope, thereby achieving curvature control of the insertion section.

[0037] When using a camera module to examine an organ, the existing snake bone segment needs to bend to accommodate the lesion's position to better capture the image. However, since most existing snake bones are made of metal and the insertion portion is a braided tube covered with a woven mesh structure, the adhesion between the two is poor, resulting in the snake bone segment easily falling off the insertion tube during use, leading to medical accidents where the snake bone segment is left inside a human organ. Therefore, a snake bone insertion tube connection structure is urgently needed to address this problem.

[0038] Referring to FIG1 , an embodiment of the present application provides a snake-bone insertion tube connection structure, comprising a snake-bone tube 1, an insertion tube 2, an adapter 3, and a connector 4. The snake-bone tube 1 and the insertion tube 2 are both part of an endoscope, and the snake-bone tube 1 is sleeved on the end of the insertion tube 2 to accommodate instrument tubes, signal lines, steel wires, and other components. When the endoscope is in use, the bending angle of the snake-bone tube 1 can be adjusted by adjusting the tightness of the control cable in the snake-bone tube 1, thereby achieving control over the bending and steering of the insertion tube 2. The adapter 3 and the connector 4 are used to connect the snake-bone tube 1 and the insertion tube 2, so that the snake-bone tube 1 and the insertion tube 2 can have a better connection effect and reduce the probability of the snake-bone tube 1 falling off.

[0039] In a specific configuration, the snake-bone pipe 1 and the inserted pipe 2 are spaced apart along a first direction, and the adapter 3 is connected to the snake-bone pipe 1. Specifically, the snake-bone pipe 1 and the inserted pipe 2 are coaxial and spaced apart. The adapter 3 and the snake-bone pipe 1 are both made of metal, and the adapter 3 and the snake-bone pipe 1 are welded together. The material of the adapter 3 can be the same as that of the snake-bone pipe 1. Compared to different materials, the adapter 3 and the snake-bone pipe 1 made of the same material are more likely to have a more stable connection.

[0040] The insert tube 2 comprises a base tube and a braided mesh, with the base tube wrapped and mounted on the mesh. The connector 4 is made of the same material as the base tube and is welded to the base tube. The connector 4 extends through the adapter 3 along a second direction that intersects the first direction. Compared to connectors made of different materials, connectors 4 made of the same material are easier to connect to the base tube, resulting in a more stable connection between the connector 4 and the insert tube 2. Specifically, the connector 4 and the base tube are both made of nylon. A portion of the connector 4 is injection-molded onto the adapter 3, while the remaining portion is welded to the end of the base tube of the insert tube 2 facing the snake-shaped tube 1.

[0041] The snake-bone insertion tube connection structure of the present application selects a connector 4 made of the same material as the base tube of the insertion tube 2, so that the connector 4 can be connected to the base tube by melting, ensuring that the connector 4 can have a good connection effect with the insertion tube 2. At the same time, it is connected to the snake-bone tube 1 through the adapter 3, and the connector 4 is passed through the adapter 3 along the second direction to ensure that the connector 4 can have a good connection effect with the adapter 3, thereby achieving a better fixing effect between the snake-bone tube 1 and the insertion tube 2 of different materials, so that the snake-bone tube 1 is not easy to fall off from the insertion tube 2 during use, effectively reducing medical accidents. Specifically, the snake-bone insertion tube connection structure of the present application connects the adapter 3 to the snake-bone tube 1 by welding, thereby ensuring that the adapter 3 can have a relatively stable connection effect with the snake-bone tube 1, and by injection molding the connector 4 on the adapter 3 and welding the connector 4 to the end of the inserted tube 2, thereby ensuring that the connector 4 and the inserted tube 2 can more easily have a relatively stable connection effect, thereby enabling the snake-bone tube 1 to be firmly connected to the inserted tube 2, so that the snake-bone tube 1 is not easy to fall off from the inserted tube 2 after connection.

[0042] Referring to Figures 1 and 2, in one embodiment, the connector 4 includes a first connector portion 41 and a second connector portion 42. The adapter 3 has an annular cross-section perpendicular to the first direction. The first connector portion 41 is disposed around the outer circumference of the adapter 3 with the axis along the first direction as the axis. The second connector portion 42 is disposed on the first connector portion 41 and passes through the adapter 3. Specifically, the adapter 3 is coaxially disposed between the serpentine tube 1 and the insert tube 2. The first connector portion 41 is coaxially disposed on the outer circumference of the adapter 3, and the inner circumference of the first connector portion 41 is connected to the outer circumference of the adapter 3. The axial ends of the first connector portion 41 are respectively connected to the serpentine tube 1 and the insert tube 2. The second connector portion 42 passes through the adapter 3 along the second direction and is connected to the inner circumference of the first connector portion 41. The second direction is perpendicular to the first direction.

[0043] Referring to Figures 1, 2, and 4, in one embodiment, multiple second connecting portions 42 are provided. Multiple openings 31 are provided on the outer circumference of the adapter 3, centered along the axis in the first direction. The multiple second connecting portions 42 are respectively inserted through the multiple openings 31. Specifically, the outer circumference of the adapter 3 is provided with multiple openings 31 evenly spaced along the axis in the first direction. The connecting member 4 is made of nylon and is injection molded onto the adapter 3 and the insert tube 2 to securely connect the adapter 3 and the insert tube 2.

[0044] For example, when the connector 4 is injection-molded onto the adapter 3 and the inserted tube 2, the first connecting portion 41 is wrapped around the outer circumference of the adapter 3 and welded to the end of the inserted tube 2 to ensure a secure connection between the connector 4 and the inserted tube 2. Simultaneously, the plurality of second connecting portions 42 are injected into the interior of the adapter 3 through the plurality of openings 31 to ensure a secure connection between the connector 4 and the adapter 3, thereby achieving a more secure connection between the adapter 3 and the inserted tube 2.

[0045] Referring to Figures 2 and 3 , in one embodiment, the first connecting portion 41 is further disposed around the outer circumference of the substrate tube, with the axis along the first direction serving as the axis. Specifically, when the connector 4 is injection-molded onto the adapter 3 and the substrate tube, a portion of the first connecting portion 41 covers the outer circumference of the adapter 3, while another portion of the first connecting portion 41 covers a portion of the outer circumference of the substrate tube and is welded to the end of the substrate tube. This provides a more reliable connection between the connector 4 and the substrate tube, effectively enhancing the connection stability between the adapter 3 and the inserted tube 2.

[0046] Referring to Figures 1 and 3 , in one embodiment, along a first direction, the ends of the adapter 3 are disposed within the interior of the snake-bone tube 1 and the base tube, respectively. The inner circumferences of the snake-bone tube 1 and the base tube abut against the outer circumference of the adapter 3. Specifically, the axial ends of the adapter 3 are inserted and secured within the interiors of the snake-bone tube 1 and the base tube, respectively, to enhance the stability between the snake-bone tube 1 and the inserted tube 2.

[0047] In one embodiment, the snake-bone insertion tube connection structure further includes a protective sleeve 5, which is disposed over the outer circumference of the base tube and the connector 4 to shield and protect the base tube, the adapter 3, and the connector 4. An adhesive member 6 is provided between the protective sleeve 5 and the connector 4 to ensure a secure connection between the protective sleeve 5 and the connector 4.

[0048] Specifically, the protective sleeve 5 is made of thermoplastic polyurethane elastomer rubber and is coaxially disposed on the outer circumference of the base tube and the connector 4. The adhesive 6 is coaxially disposed on the outer circumference of the connector 4 and connected to the inner circumference of the protective sleeve 5. It contacts the end of the snake-shaped tube 1 facing the inserted tube 2 and the end of the inserted tube 2 facing the snake-shaped tube 1. The adhesive 6 can be made of ultraviolet-curing UV glue.

[0049] 1-4 , an embodiment of the present application further provides a connection method for a snake-bone insertion tube connection structure, which can be used for the snake-bone insertion tube connection structure in any of the above embodiments, comprising the following steps:

[0050] Connect the adapter 3 to the snake-bone pipe 1. Specifically, insert one end of the adapter 3 into the inside of the snake-bone pipe 1 and connect the adapter 3 to the snake-bone pipe 1 by welding. The material of the adapter 3 is the same as that of the snake-bone pipe 1, both of which are metal materials for easy welding.

[0051] The connector 4 is melt-connected to the inserted tube 2 and inserted into the adapter 3. Specifically, the end of the adapter 3 facing away from the snake-bone tube 1 is inserted into the base tube. The connector 4 is injection-molded onto the adapter 3, with the second connecting portion 42 of the connector 4 injected into the multiple openings 31 of the adapter 3. The first connecting portion 41 of the connector 4 is then melt-bonded to the base tube of the inserted tube 2. The second connecting portion 42 and the first connecting portion 41 are integrally molded. The connector 4 is made of the same nylon material as the base tube, facilitating the fusion bonding.

[0052] More specifically, multiple openings 31 are arranged on the outer circumference of the adapter 3, with the axis along the first direction as the axis. When the connector 4 is injection-molded onto the adapter 3 and the inserted tube 2, the first connecting portion 41 covers the outer circumference of the adapter 3 and is welded to the end of the inserted tube 2, ensuring a secure connection between the connector 4 and the inserted tube 2. Multiple second connecting portions 42 are injected into the interior of the adapter 3 through the multiple openings 31, ensuring a secure connection between the connector 4 and the adapter 3, thereby achieving a more stable connection between the adapter 3 and the inserted tube 2.

[0053] In addition, when the connector 4 is set on the adapter 3 and the inserted tube 2 in an injection molding manner, the first connecting portion 41 can be covered on the outer peripheral surface of the adapter 3 while also covering a portion of the outer peripheral surface of the inserted tube 2, and welded to the end of the inserted tube 2, so that the connection between the connector 4 and the inserted tube 2 is more reliable, thereby enabling the connector 4 to effectively improve the stability of the connection between the adapter 3 and the inserted tube 2.

[0054] In one embodiment, the method for connecting the snake bone insertion tube connection structure further includes the following steps:

[0055] An adhesive member 6 is provided on the outer peripheral surface of the connecting member 4. Specifically, the adhesive member 6 can be made of ultraviolet curing uv glue, which is coated on the outer peripheral surface of the connecting member 4 and contacts the snake tube member 1 and the inserted tube member 2.

[0056] The protective cover 5 is placed over the outer circumference of the snake-bone pipe 1 and the connector 4, and the protective cover 5 and the connector 4 are adhered together using the adhesive 6. Specifically, the protective cover 5 is placed over the outer circumference of the snake-bone pipe 1 and the connector 4, with the inner circumference of the protective cover 5 contacting the adhesive 6, thereby adhering the protective cover 5 and the connector 4 together. The protective cover 5 can shield and protect the snake-bone pipe 1, the adapter 3, and the connector 4. The protective cover 5 is made of thermoplastic polyurethane elastomer rubber.

[0057] The connection method of the serpentine insertion tube connection structure of the present application selects a connector 4 made of the same material as the base tube of the insertion tube 2, so that the connector 4 can be connected to the base tube by melting, ensuring that the connector 4 can have a good connection effect with the insertion tube 2, and at the same time is connected to the serpentine tube 1 through the adapter 3, and the connector 4 is passed through the adapter 3 along the second direction, ensuring that the connector 4 can have a good connection effect with the adapter 3, thereby achieving a better fixing effect between the serpentine tube 1 and the insertion tube 2 of different materials, so that the serpentine tube 1 is not easy to fall off from the insertion tube 2 during use, effectively reducing medical accidents. Specifically, the adapter 3 is connected to the snake-bone pipe fitting 1 by welding, so as to ensure that the adapter 3 can have a relatively stable connection effect with the snake-bone pipe fitting 1. The connector 4 is injection-molded on the adapter 3 and the connector 4 is welded to the end of the inserted pipe fitting 2, so as to ensure that the connector 4 and the inserted pipe fitting 2 have a more stable connection effect, thereby enabling the snake-bone pipe fitting 1 to be firmly connected to the inserted pipe fitting 2, so that the snake-bone pipe fitting 1 is not easy to fall off from the inserted pipe fitting 2 after connection.

[0058] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0059] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A connecting structure for a snake bone insertion tube, characterized in that, It includes a snake bone pipe fitting, an insertion pipe fitting, an adapter and a connecting piece. The snake bone pipe fitting and the insertion pipe fitting are arranged at intervals in a first direction. The adapter is connected to the snake bone pipe fitting; The insertion pipe fitting includes a base pipe and a braided net. The base pipe is coated on the braided net. The material of the connecting piece is the same as that of the base pipe, and the connecting piece is welded to the base pipe. The connecting piece penetrates through the adapter in a second direction, and the second direction intersects with the first direction.

2. The snake bone insertion tube connection structure according to claim 1, wherein The connecting piece includes a first connecting portion and a second connecting portion. The adapter has an annular cross-section perpendicular to the first direction. The first connecting portion is arranged around the outer peripheral surface of the adapter with the axis along the first direction as the axis. The second connecting portion is arranged on the first connecting portion, and the second connecting portion penetrates through the adapter.

3. The snake bone insertion tube connection structure according to claim 2, characterized in that, There are multiple second connecting portions. Multiple through holes are arranged on the outer peripheral surface of the adapter, and the multiple second connecting portions penetrate through the multiple through holes one by one.

4. The snake bone insertion tube connection structure according to claim 2, characterized in that, The first connecting portion is also arranged around the outer peripheral surface of the base pipe with the axis along the first direction as the axis.

5. The snake bone insertion tube connection structure according to claim 2, characterized in that, Along the first direction, both ends of the adapter are respectively arranged inside the snake bone pipe fitting and the base pipe, and the inner peripheral surfaces of the snake bone pipe fitting and the base pipe are both attached to the outer peripheral surface of the adapter.

6. The snake bone insertion tube connection structure according to claim 1, characterized in that, The adapter and the snake bone pipe fitting are both configured with a metal material, and the connecting piece and the base pipe are both configured with a nylon material.

7. The snake bone insertion tube connection structure according to claim 1, characterized in that, The snake bone insertion pipe connection structure further includes a protective sleeve. The protective sleeve is sleeved on the outer peripheral surfaces of the base pipe and the connecting piece, and an adhesive is provided between the protective sleeve and the connecting piece.

8. A connection method for a connection structure of a snake bone insertion tube, characterized in that, It includes the following steps: Connect the adapter to the snake bone pipe fitting; Melt and connect the connecting piece to the insertion pipe fitting, and make the connecting piece penetrate through the adapter; Among them, the insertion pipe fitting includes a base pipe and a braided net. The base pipe is coated on the braided net. The material of the connecting piece is the same as that of the base pipe.

9. The connection method of the snake bone insertion tube connection structure according to claim 8, characterized in that, The step of melting and connecting the connecting piece to the base pipe and making the connecting piece penetrate through the adapter includes: Insert one end of the adapter far from the snake bone pipe fitting into the inside of the base pipe; Inject and mold the connecting piece on the outer peripheral surface of the adapter, so that the second connecting portion of the connecting piece is injected into the multiple through holes of the adapter, and the first connecting portion of the connecting piece is welded to the base pipe; Among them, the multiple through holes are arranged at intervals around the axis along the first direction on the outer peripheral surface of the adapter, and the second connecting portion and the first connecting portion are an integrally formed structure.

10. The connecting method of the snake bone insertion tube connecting structure according to claim 8, characterized in that, The connection method of the snake bone insertion pipe connection structure further includes the following steps: Set an adhesive on the outer peripheral surface of the connecting piece; Slip the protective sleeve onto the outer peripheral surfaces of the snake bone pipe fitting and the connecting piece, and paste the protective sleeve and the connecting piece through the adhesive.

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