A forceps channel tube

Abstract

An embodiment of the present application provides a forceps channel tube, which relates to the technical field of medical devices. The forceps channel tube includes a head, which is a multi-layer composite structure of at least three layers and is arranged inside the end of the endoscope lens; a tail, which is a single-layer structure; a transition section, which is arranged between the head and the tail, and the transition section is a multi-layer composite structure; adopting a segmented structure to solve the problems of easy breakage, easy flattening and damage of the existing forceps channel tube.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular, to a forceps channel tube. Background Art

[0002] A medical endoscope refers to a medical instrument inserted into the human body cavity for diagnosis and treatment purposes, and is a common method for observing the internal cavity of the human body.

[0003] Among them, the forceps channel tube is a key component inside the endoscope, and it is the channel for the diagnostic and therapeutic accessories to enter the body from outside the body. Since the human body cavity is usually curved, the endoscope needs to passively conform to the human body cavity during use to be inserted into the target position; at the same time, after the endoscope head reaches the target position, its head end also needs to be actively bent through the control handle according to the anatomical structure of the target position to better perform observation, diagnosis, and treatment; these bending forms have very high requirements for the performance of the forceps channel tube. As a working channel, the inner diameter of the forceps channel tube needs to be as large as possible, and the inner layer friction should be as small as possible to ensure that the diagnostic and therapeutic instruments can pass smoothly. At the same time, the forceps channel tube should be easy to bend, not easy to break, not easy to be flattened, not easy to be damaged, and its performance remains unchanged after multiple bending fatigue. Existing forceps channel tubes are often easy to break, easy to be flattened and damaged, and have poor economy. Summary of the Invention

[0004] The purpose of the embodiments of the present application is to provide a forceps channel tube, which adopts a segmented structure to solve the problems that the existing forceps channel tubes are easy to break, easy to be flattened and damaged, and have poor economy.

[0005] The embodiments of the present application provide a forceps channel tube, including:

[0006] A head, which is a multi-layer composite structure of at least 3 layers and is arranged inside the endoscope head end;

[0007] A tail, which is a single-layer structure and is used to connect the endoscope handle;

[0008] A transition section, which is arranged between the head and the tail, and the transition section is a multi-layer composite structure.

[0009] In the above implementation process, a three - segment structure is adopted, including a head, a transition section, and a tail. Each section adopts a different structure according to the stress situation. Compared with the one - piece structure, it is beneficial to improve the durability of the forceps channel tube and extend its service life. The head is arranged inside the end of the endoscope lens and needs to bend complexly many times inside the human body along with the end of the endoscope lens. Therefore, it is the most vulnerable section of the forceps channel tube. If a single - layer structure is adopted, it is easy to break, be flattened, be damaged, and be damaged by medical treatment accessories. Therefore, a multi - layer composite structure is adopted to enhance the anti - folding property, making it not easy to break, be flattened, or be damaged. The tail adopts a single - layer structure, which is easy to process and reduces the production cost. The transition section adopts a multi - layer composite structure, enhancing the connection strength between the head and the tail, making it not easy to break, and solving the problems of the existing forceps channel tube being easy to break, be flattened, and be damaged.

[0010] Further, the head includes:

[0011] The inner wall layer, which is a low - friction - coefficient material layer;

[0012] The reinforcing layer, which is a metal braided mesh layer;

[0013] The outer wall layer, which is a plastic layer.

[0014] In the above implementation process, the head needs to follow the endoscope lens to bend complexly many times. Adopting a multi - layer composite structure and using a metal braided mesh layer for reinforcement can reduce the wall thickness of the pipe, provide a larger pipe inner diameter, and at the same time increase the anti - folding property of the pipe. The pipe is not easy to break, be flattened, or be damaged.

[0015] Further, the tail is a single - layer tube made of a low - friction - coefficient material.

[0016] In the above implementation process, the tail of the forceps channel tube is long, and the bending angle does not need to be as large as that of the head. If a double - layer or multi - layer structure is adopted, it will result in high costs. Adopting a single - layer tube made of a low - friction - coefficient material can reduce the friction force, thereby reducing wear. The production and processing are simple and easy, and it is easy to achieve large - scale production, reducing the production cost.

[0017] The head and the tail are butted to form the middle connection layer of the transition section.

[0018] In the above implementation process, the middle connection layer of the transition section is formed by butting the head and the tail, buffering the forces on the head and the tail, and being protected by the outer layer when arranged in the middle connection layer, enhancing the connection strength between the head and the tail and making it not easy to break.

[0019] Further, one end of the head close to the transition section is provided with a first flared section. An inner convex step is arranged at the connection between the first flared section and the head. The head is butted with the tail through the first flared section.

[0020] In the above implementation process, a first flared section is provided at the head, and the connection with the tail is realized by using the first flared section, which is convenient for connection and improves the connection strength.

[0021] Further, a second flared section is provided at one end of the tail close to the transition section. An inner convex step is provided at the connection between the second flared section and the tail. The tail is docked with the tail through the second flared section.

[0022] In the above implementation process, a second flared section is provided at the tail, and the connection with the head is realized by using the second flared section, which is convenient for connection and improves the connection strength.

[0023] Further, the transition section includes:

[0024] An inner layer tube, a first flared section is sleeved on the first end of the inner layer tube, a second flared section is sleeved on the second end of the inner layer tube, and the first end and the second end of the inner layer tube abut against the corresponding inner convex steps, and the first flared section abuts against the second flared section;

[0025] An outer layer tube, which is sleeved on the first flared section and the second flared section, and the first end of the outer layer tube extends to the head on the inner side of the first flared section, and the second end of the outer layer tube extends to the tail on the inner side of the second flared section;

[0026] The middle connection layer is formed by docking the first flared section and the second flared section.

[0027] In the above implementation process, the connection between the head and the tail is realized through the first flared section and the second flared section, and the first flared section and the second flared section form the middle connection layer of the transition section to realize the connection between the head and the tail. At the same time, the first flared section and the second flared section are sleeved on the inner layer tube, and the outer layer tube is used to protect the first flared section and the second flared section and enhance their firmness. The overall structure enhances the connection strength between the head and the tail and is not easily broken.

[0028] Further, the inner layer tube is connected to the first flared section by interference fit or bonding; the inner layer tube is connected to the second flared section by interference fit or bonding.

[0029] In the above implementation process, the inner layer tube is the connection carrier of the first flared section and the second flared section, and enhances the firmness of the docking between the first flared section and the second flared section.

[0030] Further, the inner layer tube is a metal tube.

[0031] In the above implementation process, the inner layer tube uses a metal tube, which has good anti-bending properties.

[0032] Further, the outer layer tube is a plastic tube.

[0033] In the above implementation process, the plastic pipe is lightweight, reducing the weight of the device and lowering the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] To more clearly illustrate the technical solutions of the embodiments of the present application, the accompanying drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other relevant drawings can be obtained based on these drawings.

[0035] Figure 1 Structural schematic diagram of a forceps channel tube provided by an embodiment of the present application;

[0036] Figure 2 Structural schematic diagram of the head of the forceps channel tube provided by an embodiment of the present application;

[0037] Figure 3 Structural schematic diagram of the first flared section provided by an embodiment of the present application;

[0038] Figure 4 Structural schematic diagram of the second flared section provided by an embodiment of the present application;

[0039] Figure 5 Enlarged cross-sectional structural schematic diagram of the transition section provided by an embodiment of the present application;

[0040] Figure 6 Docking schematic diagram of the first flared section and the second flared section provided by an embodiment of the present application.

[0041] Reference Signs:

[0042] 100 - Head; 101 - Inner wall layer; 102 - Reinforcing layer; 103 - Outer wall layer; 110 - First flared section; 200 - Tail; 220 - Second flared section; 300 - Transition section; 301 - Inner layer tube; 302 - Outer layer tube. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0043] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and illustrated in the drawings here can be arranged and designed in various different configurations. Therefore, the detailed description of the embodiments of the present application provided in the following drawings is not intended to limit the scope of the present application to be protected, but only represents the selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts belong to the scope of protection of the present application.

[0044] In this application, the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe this application and its embodiments, and are not used to limit that the indicated devices, elements or components must have a specific orientation, or be constructed and operated in a specific orientation.

[0045] Moreover, in addition to being used to represent the orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0046] In addition, the terms "mounted", "arranged", "provided with", "connected", "linked" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral structure; it may be a mechanical connection, or a point connection; it may be directly connected, or indirectly connected through an intermediate medium, or there may be internal communication between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0047] In addition, terms such as "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, the meaning of "a plurality" is two or more.

[0048] Please refer to Figure 1 , Figure 1 , which is a schematic structural diagram of a forceps channel tube provided by an embodiment of this application. The forceps channel tube adopts a segmented structure to adjust the structure of each part according to the force-bearing conditions of each segment of the forceps channel tube, enhance the anti-folding property of the forceps channel tube, improve the performance of not being easily broken, flattened or damaged, and reduce the production cost at the same time. The specific structure of the forceps channel tube includes:

[0049] The head 100, which is a multi-layer composite structure of at least 3 layers, is arranged inside the end of the endoscope lens. The head 100 extends out of the end of the endoscope lens and is connected to the tail 200 through the transition section 300;

[0050] The tail 200, which is a single-layer structure, is used to connect the endoscope handle;

[0051] The transition section 300 is disposed between the head 100 and the tail 200, and the transition section 300 is a multi-layer composite structure.

[0052] In the above implementation process, a three-section structure is adopted, and each section adopts a different structure according to the force condition. Compared with the one-piece structure, it is beneficial to improve the durability of the forceps channel tube and extend the service life.

[0053] The head 100, the tail 200 and the transition section 300 of the forceps channel tube adopt different structures according to the different forces. Since the head 100 needs to follow the endoscope lens to perform multiple complex bends in the human body, a multi-layer composite structure is adopted to enhance the anti-folding property of the head 100, making it not easy to break, not easy to be flattened, and not easy to be damaged; the transition section 300 adopts a multi-layer composite structure to enhance the connection strength between the head 100 and the tail 200, making it not easy to break; the tail 200 adopts a single-layer structure to reduce the overall weight of the forceps channel tube and reduce the production cost; through the segmented structure, the problems of the existing forceps channel tube being easy to break, easy to be flattened and damaged are solved.

[0054] For example Figure 2 As shown, it is a schematic structural diagram of the head 100 of the forceps channel tube. The head 100 has at least three layers. Taking three layers as an example, specifically, it may include:

[0055] The inner wall layer 101 is a low friction coefficient material layer. For example, it can adopt one or several of materials such as polyethylene, polypropylene, polytetrafluoroethylene, and parylene, which can reduce the friction between the inner wall of the head 100 and the diagnostic and therapeutic instruments, and facilitate the movement of the diagnostic and therapeutic instruments in the forceps channel tube;

[0056] The reinforcement layer 102 is a metal braided mesh layer. The metal braided mesh adopted is woven by a multi-strand metal wire through a tube net weaving machine. For example, the metal wire can be 16 strands, 32 strands or 64 strands, etc. The material of the metal wire can be one or several of materials such as stainless steel, nickel-titanium, and copper, which are not easy to be corroded. The metal braided mesh layer is used to reinforce the head 100, and at the same time, the wall thickness of the head 100 pipe can be reduced, providing a larger pipe inner diameter, improving the anti-folding property of the pipe and not being easy to break, not being easy to be flattened, and not being easy to be damaged;

[0057] The outer wall layer 103 is a plastic layer, and it can adopt one or several of materials such as polyvinyl chloride, polyurethane, polyester, polyamide, and polycarbonate.

[0058] The head 100 of the forceps channel tube is relatively short, usually not exceeding 150 mm. However, the head 100 is also the most vulnerable section. The head 100 needs to follow the endoscope lens to make multiple complex bends in the human body, and the bending angle is the largest. If a single-layer structure is adopted, it is easy to break, be flattened, be damaged, and be damaged by diagnostic and therapeutic accessories. Therefore, the head 100 of the forceps channel tube in this application adopts a multi-layer composite structure to enhance the anti-folding property of the head 100. Moreover, the wall thickness is relatively thin. In the case of the same outer diameter, the production cost is reduced, a larger inner diameter of the tube is provided, and it is not easy to break, be flattened, or be damaged.

[0059] Exemplarily, the tail 200 is a single-layer tube made of a material with a low coefficient of friction, such as a single-layer plastic tube. It not only has a relatively light weight but also has a small frictional resistance, which is convenient for the movement of diagnostic and therapeutic instruments. The single-layer plastic tube can be made of one or several of materials such as polyethylene, polypropylene, polytetrafluoroethylene, and parylene.

[0060] The tail 200 of the forceps channel tube is usually relatively long, generally between 500 mm and 2000 mm. If a double-layer or multi-layer structure is adopted, it will result in high costs. Therefore, in this application, a single-layer plastic tube structure is adopted, which is simple and easy to produce and process, easy to achieve large-scale production, and reduces the production cost.

[0061] The transition section 300 adopts a multi-layer composite structure and is used for connecting and transitioning between the head 100 and the tail 200. In order to make the connection between the head 100 and the tail 200 more firm, the head 100 and the tail 200 can be butted to form an intermediate connection layer of the transition section 300. Exemplarily, the specific structure may include:

[0062] Such as Figure 3 As shown, it is a schematic structural diagram of the first flared section 110. One end of the head 100 close to the transition section 300 is provided with the first flared section 110. An inner convex step is provided at the connection between the first flared section 110 and the head 100. The head 100 is butted with the tail 200 through the first flared section 110.

[0063] Such as Figure 4 As shown, it is a schematic structural diagram of the second flared section 220. One end of the tail 200 close to the transition section 300 is provided with the second flared section 220. An inner convex step is provided at the connection between the second flared section 220 and the tail 200. The tail 200 is butted with the tail 200 through the second flared section 220.

[0064] Exemplarily, such as Figure 5 As shown, it is an enlarged schematic cross-sectional structure diagram of the transition section 300. The transition section 300 may include:

[0065] The inner tube 301 has a first flared section 110 sleeved on its first end, and a second flared section 220 sleeved on its second end. Moreover, the first end and the second end of the inner tube 301 abut against corresponding inner convex steps, and the first flared section 110 abuts against the second flared section 220. By way of example, the inner tube 301 can be a metal tube, such as Figure 6 As shown, it is a docking schematic diagram of the first flared section 110 and the second flared section 220. Docking is carried out in the direction indicated by the arrow in Figure 6 . The first flared section 110 and the second flared section 220 are sleeved on the metal tube. The first end and the second end of the metal tube abut against corresponding inner convex steps. The metal tube and the first flared section 110 can be connected by interference fit or bonding, and the metal tube and the second flared section 220 are connected by interference fit or bonding.

[0066] The outer tube 302 is sleeved on the first flared section 110 and the second flared section 220. Moreover, the first end of the outer tube 302 extends to the head 100 inside the first flared section 110, and the second end of the outer tube 302 extends to the tail 200 inside the second flared section 220. By way of example, the outer tube 302 can be a thin-walled plastic tube, and the material of the thin-walled plastic tube is ordinary plastic, such as one or several of materials like polyvinyl chloride, polyurethane, polyester, polyamide, polycarbonate, etc. The outer tube 302 plays a role in strengthening and protecting the docking part of the first flared section 110 and the second flared section 220, and saves production costs and reduces the weight of the forceps channel tube.

[0067] The middle connection layer is formed by docking the first flared section 110 and the second flared section 220.

[0068] The length of the transition section 300 is about 10 mm. The multi-layer structure of the transition section 300 increases the connection strength between the head 100 and the tail 200 and is not easily broken. In addition, the inner diameters of the head 100, the transition section 300, and the tail 200 of the forceps channel tube are the same, which facilitates the movement of the diagnostic and therapeutic instruments inside the forceps channel tube and reduces the friction between the two.

[0069] In all embodiments of the present application, "big", "small", "many", "few", "up", "down", "thin", "thick" are relative. For the expression methods of such relative terms, the embodiments of the present application will not elaborate further.

[0070] It should be understood that the "in this embodiment", "in the embodiments of the present application" or "as an alternative embodiment" mentioned throughout the specification mean that the specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, the "in this embodiment", "in the embodiments of the present application" or "as an alternative embodiment" that appear throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. Those skilled in the art should also be aware that the embodiments described in the specification are all alternative embodiments, and the actions and modules involved are not necessarily essential to the present application.

[0071] In various embodiments of the present application, it should be understood that the size of the serial numbers of the above processes does not necessarily mean the inevitable sequence of execution. The execution sequence of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

[0072] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present application, and all should be covered by the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A forceps channel tube, characterized in that, Comprising: A head, which is a multi-layer composite structure of at least three layers and is arranged inside the end of the endoscope lens; A tail, which is a single-layer structure and is used to connect the endoscope handle; A transition section, which is arranged between the head and the tail, and the transition section is a multi-layer composite structure; The head and the tail are butted to form an intermediate connection layer of the transition section; One end of the head close to the transition section is provided with a first flared section, and an inner convex step is arranged at the connection between the first flared section and the head. The head is butted with the tail through the first flared section; One end of the tail close to the transition section is provided with a second flared section, and an inner convex step is arranged at the connection between the second flared section and the tail. The tail is butted with the tail through the second flared section, and the tail is a single-layer tube made of a material with a low friction coefficient; The transition section includes: An inner layer tube, a first flared section is sleeved on the first end of the inner layer tube, a second flared section is sleeved on the second end of the inner layer tube, and the first end and the second end of the inner layer tube abut against the corresponding inner convex steps, and the first flared section abuts against the second flared section; An outer layer tube, which is sleeved on the first flared section and the second flared section, and the first end of the outer layer tube extends to the head on the inner side of the first flared section, and the second end of the outer layer tube extends to the tail on the inner side of the second flared section; The intermediate connection layer is formed by butting the first flared section and the second flared section.

2. The forceps channel tube according to claim 1, wherein, The head includes: An inner wall layer, which is a low friction coefficient material layer; A reinforcing layer, which is a metal braided mesh layer; An outer wall layer, which is a plastic layer.

3. The forceps channel tube according to claim 1, characterized in that, The inner layer tube is connected with the first flared section by interference fit or bonding; the inner layer tube is connected with the second flared section by interference fit or bonding.

4. The forceps channel tube according to claim 1, characterized in that, The inner layer tube is a metal tube.

5. The forceps channel tube according to claim 1, characterized in that, The outer layer tube is a plastic tube.

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