Nutrition tube and nutrition tube system

Abstract

The utility model provides a nutrient canal and a nutrient canal system, and relates to the technical field of medical instruments. The nutrient canal comprises a canal body and a canal joint, the canal joint is provided with a first connecting end, a clamping groove is formed in the hole wall of an inner hole of the first connecting end, the canal body is provided with a second connecting end, the second connecting end is provided with a clamping tongue, and the height, protruding out of the canal body, of the clamping tongue is gradually increased or gradually increased and then decreased in the direction away from the end of the second connecting end; the second connecting end can be arranged in the inner hole in a penetrating mode so that the clamping tongue can be connected with the clamping groove in a clamping mode. In the process of inserting the nutrition tube, the tube connector and the tube body are separated firstly, the tube body enters the instrument from the oral cavity and is inserted, after in-vivo indwelling of the tube body is completed, the second connecting end is drawn out from the nasopharynx from the oropharynx at the soft palate, and then the second connecting end of the tube body and the first connecting end of the tube connector are connected in a clamped mode. Obviously, due to the design of the clamping tongue, the outer diameter of the second connecting end is reduced, and stimulation to a patient can be reduced.

Description

Technical Field

[0001] This application relates to the technical field of medical devices, and particularly to a feeding tube and a feeding tube system. Background Art

[0002] Generally, feeding tubes are mostly nasally inserted. Compared with oral insertion, they have better fixation effect and less impact on the daily life of patients. During intubation, instruments need to be inserted through the oral cavity. After being indwelled in the body, it passes through the oropharynx at the soft palate to the nasopharynx, and then is withdrawn from the nasal cavity and fixed on the face. The end of the feeding tube protruding from the nasal cavity (hereinafter referred to as the proximal end) is provided with a connection port, and a syringe or infusion bag with a matching interface is used to connect and transport fluids during use. However, the connection port of the above-mentioned feeding tube is larger and heavier compared to the outer diameter of the tube body of the feeding tube, causing great pain to the patient when passing through the pharynx. Utility Model Content

[0003] In view of this, the purpose of this application is to overcome the deficiencies in the prior art, and provide a feeding tube and a feeding tube system, which are conducive to intubation operation and can effectively reduce the discomfort of patients during intubation.

[0004] This application provides the following technical solutions:

[0005] In a first aspect, an embodiment of this application provides a feeding tube, which includes a tube body and a tube connector. The tube connector has a first connection end, and a card slot is provided on the inner wall of the inner hole of the first connection end. The tube body has a second connection end, and a tongue is provided at the second connection end. The height of the tongue protruding from the tube body gradually increases or first gradually increases and then gradually decreases in the direction away from the end of the second connection end; wherein, the second connection end can pass through the inner hole so that the tongue and the card slot are engaged.

[0006] In one of the embodiments of the first aspect, the tongue extends circumferentially along the tube body and is connected end to end. The second connection end and the tongue form a pagoda-shaped male plug; the card slot extends circumferentially along the inner hole and is communicated end to end. The first connection end forms a pagoda-shaped female plug; wherein, at least one of the first connection end, the first connection end and the tongue is set as an elastic structure so that the pagoda-shaped male plug and the pagoda-shaped female plug can be plugged and matched.

[0007] In one of the embodiments of the first aspect, the tongue extends circumferentially along the tube body and is connected end to end. The second connection end and the tongue form a pagoda-shaped male plug; the card slot extends circumferentially along the inner hole and is communicated end to end. The first connection end forms a pagoda-shaped female plug; wherein, the tube connector is formed by enclosing a plurality of components, and the adjacent components are detachable.

[0008] In one embodiment of the first aspect, the latch tongue and the latch groove have an interference fit, and the latch tongue and the latch groove have a conical fit.

[0009] In one embodiment of the first aspect, the end of the tongue facing away from the tube body has a plurality of notches; wherein, when there are multiple notches, the multiple notches are arranged at intervals along the extension direction of the tongue.

[0010] In one embodiment of the first aspect, there are multiple latching tongues and multiple slots, and the multiple latching tongues are arranged in sequence along the extension direction of the second connection end, and the multiple slots are arranged in sequence along the extension direction of the first connection end; wherein, when the latching tongues and the slots are in a latched state, the latching tongues and the slots are arranged in one-to-one correspondence.

[0011] In one embodiment of the first aspect, the connection between the latch tongue and the tube body is smoothly transitioned, and the edges and corners of the latch tongue are smoothly transitioned.

[0012] In one embodiment of the first aspect, the tube body has a third connecting end, and the third connecting end is bent.

[0013] In one embodiment of the first aspect, a steel wire is passed through the tube body.

[0014] In a second aspect, the present application also provides a nutrition tube system, which includes an external nutrition supply device and a nutrition tube as described in any one of the above embodiments, wherein the nutrition tube has a fourth connection end, and the fourth connection end and the interface of the external nutrition supply device are detachably connected.

[0015] The embodiments of the present application have the following advantages:

[0016] The present application provides a nutrition tube. During the process of inserting the nutrition tube, the tube joint and the tube body are first separated, the instrument is inserted from the oral cavity and the tube body is inserted. After the tube body is placed in the body, it is passed through the oropharynx at the soft palate to the nasopharynx, and then the second connecting end is pulled out from the nasal cavity. Then, the second connecting end of the tube body and the first connecting end of the tube joint are connected by clamping.

[0017] Obviously, since the design of the tongue reduces the outer diameter of the second connecting end, it can reduce irritation to the patient and alleviate discomfort when passing through the pharynx and nose.

[0018] The present application also relates to a nutrition tube system. Since the above-mentioned nutrition tube has the above-mentioned technical effects, the nutrition tube system including the nutrition tube should have the same technical effects, which will not be repeated here.

[0019] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the following specifically presents preferred embodiments and, in conjunction with the accompanying drawings, provides a detailed description as follows. Description of the Drawings

[0020] To more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. 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 related drawings can also be obtained based on these drawings.

[0021] Figure 1 Fig. shows a schematic structural view of a perspective of a feeding tube provided by an embodiment of the present application;

[0022] Figure 2 Fig. shows a schematic structural view of another perspective of a feeding tube provided by an embodiment of the present application;

[0023] Figure 3 Fig. shows a schematic structural view of a tube joint of a feeding tube provided by an embodiment of the present application;

[0024] Figure 4 Fig. shows a schematic structural view of a perspective of Embodiment 1 of a tube body of a feeding tube provided by an embodiment of the present application;

[0025] Figure 5 Fig. shows a schematic structural view of another perspective of Embodiment 1 of a tube body of a feeding tube provided by an embodiment of the present application;

[0026] Figure 6 Fig. shows a schematic structural view of Embodiment 2 of a tube body of a feeding tube provided by an embodiment of the present application.

[0027] Main Element Symbol Description:

[0028] 100 - tube joint; 110 - fourth connection end; 120 - first connection end; 121 - card slot; 200 - tube body; 210 - second connection end; 220 - third connection end; 221 - outlet; 230 - tongue; 231 - notch. Detailed Embodiment

[0029] The following details the embodiments of the present application. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application and should not be construed as limiting the present application.

[0030] It should be noted that when an element is referred to as "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. On the contrary, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0031] In this application, unless otherwise clearly specified and defined, terms such as "installed", "connected", "joined", "fixed", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. 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.

[0032] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, "a plurality of" means two or more unless otherwise clearly and specifically defined.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used in the description of the template herein are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0034] In the related art, most feeding tubes are nasal. Compared with oral feeding tubes, they have better fixation effect and less impact on the daily life of patients. During intubation, it is necessary to insert instruments through the mouth and then insert the tube. After the tube is indwelled in the body, it passes through the oropharynx at the soft palate to the nasopharynx, and then is withdrawn from the nasal cavity and fixed on the face. The end of the feeding tube protruding from the nasal cavity (hereinafter referred to as the proximal end) is provided with a connection port. When in use, a syringe or infusion bag with a matching interface is connected to the connection port to deliver fluid. However, the connection port of the above-mentioned feeding tube is larger and heavier compared to the outer diameter of the tube body of the feeding tube, causing great pain to the patient when passing through the pharynx.

[0035] Such as Figure 1 and Figure 2As shown in the figure, to solve the above technical problems, an embodiment of the present application provides a nutrition tube, which includes a tube body 200 and a tube connector 100. The tube connector 100 has a first connection end 120, and a card slot 121 is provided on the inner wall of the inner hole of the first connection end 120. The tube body 200 has a second connection end 210, and a tongue 230 is provided at the second connection end 210. The height of the tongue 230 protruding from the tube body 200 gradually increases or first gradually increases and then gradually decreases in the direction away from the end of the second connection end 210. Wherein, the second connection end 210 can pass through the inner hole so that the tongue 230 and the card slot 121 are engaged.

[0036] In these embodiments, the tube body 200 is the main part of the nutrition tube, and the tube body 200 is used to transport nutrient solution or other fluids. The tube connector 100 is connected to one end of the nutrition tube, and the tube connector 100 is used to connect an external syringe or infusion bag. The tube connector 100 has a first connection end 120 with an inner hole at one end, and a card slot 121 is provided on the inner wall of the inner hole. The tongue 230 is a structure located at the second connection end 210 of the tube body 200, and the tongue 230 is used to cooperate with the card slot 121 on the tube connector 100. The tongue 230 protrudes from the surface of the tube body 200, and the height of the tongue 230 protruding from the outer surface of the tube body 200 gradually increases starting from a position away from the second connection end 210, or first gradually increases and then gradually decreases. Obviously, this design enables the tongue 230 to be smoothly docked with the card slot 121 during the process of inserting the second connection end 210 into the tube connector 100, ensuring the stability and safety of the connection between the two.

[0037] Exemplarily, the tube connector 100 is a straight-through tube connector 100. Of course, in other embodiments, the tube connector 100 can also be an L-shaped tube connector 100, a rotatable tube connector 100, a tube connector 100 with a locking device, a three-way valve, a switching valve, etc., which are not specifically limited herein.

[0038] Of course, due to the above structural settings, during the process of inserting the nutrition tube, only the tube body 200 needs to be inserted, and after the second connection end 210 of the tube body 200 passes through the pharynx and nose, it is then connected to the first connection end 120 of the tube connector 100.

[0039] Obviously, due to the design of the tongue 230, the outer diameter of the second connection end 210 is reduced, so it can reduce the irritation to the patient and relieve discomfort when passing through the pharynx.

[0040] Such as Figure 4 、 Figure 5 and Figure 6As shown, in some embodiments, the tongue 230 extends circumferentially along the tube body 200 and is connected end to end, and the second connection end 210 and the tongue 230 form a pagoda-shaped male plug; the slot 121 extends circumferentially along the inner hole and is connected end to end, and the first connection end 120 forms a pagoda-shaped female plug; wherein, at least one of the first connection end 120, the first connection end 120 and the tongue 230 is provided as an elastic structure, so that the pagoda-shaped male plug and the pagoda-shaped female plug can be plugged and matched.

[0041] In these embodiments, this design utilizes the elastic structure to achieve a firm connection between the tube body 200 and the pipe joint 100, and at the same time, it is also convenient for disassembly. Obviously, the purpose of the pagoda-shaped plug is to improve the size problem of the traditional nutrition tube connection port and reduce the discomfort during the insertion process. The pagoda-shaped plug makes the second connection end 210 of the tube body 200 and the first connection end 120 of the pipe joint 100 designed into complementary shapes, so that the two can be firmly connected together while maintaining a small size. Among them, the tongue 230 extends circumferentially along the tube body 200 and is connected end to end to form a closed loop, which makes the tongue 230 and the tube body 200 together form a pagoda-shaped male plug. The slot 121 extends circumferentially along the inner hole of the pipe joint 100 and is connected end to end, which makes the first connection end 120 form a pagoda-shaped female plug. To ensure that the pagoda-shaped male plug and the pagoda-shaped female plug can be plugged and matched smoothly, at least one of the components (the first connection end 120, the second connection end 210 or the tongue 230) is designed as an elastic structure, so that it can deform to a certain extent during the insertion process for easy plugging.

[0042] Exemplarily, in this embodiment, the first connection end 120 is provided as an elastic structure. Of course, in other embodiments, it can also be set in one of the following ways:

[0043] 1) Set the second connection end 210 as an elastic structure;

[0044] 2) Set the tongue 230 as an elastic structure;

[0045] 3) Set both the first connection end 120 and the second connection end 210 as elastic structures;

[0046] 4) Set both the second connection end 210 and the tongue 230 as elastic structures;

[0047] 5) Set both the first connection end 120 and the tongue 230 as elastic structures.

[0048] That is to say, through the pagoda-shaped design, the tight fit between the tube body 200 and the pipe joint 100 is ensured, thereby improving the connection stability. At the same time, due to the adoption of the elastic structure, the plugging process becomes simple and fast, and it is also convenient for disassembly.

[0049] Compared with the traditional design, this design reduces the size of the second connection end 210 of the tube body 200 of the nutrition tube, thereby reducing the irritation to the patient when passing through the pharynx and alleviating the discomfort. For the manufacturing materials to achieve an elastic structure, the material selection of the tube body 200 and the tube connector 100 is crucial.

[0050] Generally, these components can be made of medical-grade flexible materials, such as medical silicone or polyurethane, etc. These materials have both sufficient flexibility and good biocompatibility.

[0051] Such as Figure 4 、 Figure 5 and Figure 6 As shown in

[0052] In some embodiments, the latching tongue 230 extends circumferentially along the tube body 200 and is connected end to end, and the second connection end 210 and the latching tongue 230 form a pagoda-shaped male plug; the card slot 121 extends circumferentially along the inner hole and is connected end to end, and the first connection end 120 forms a pagoda-shaped female plug; wherein, the tube connector 100 is formed by enclosing a plurality of components, and the adjacent components are detachable.

[0053] In these embodiments, the latching tongue 230 extends circumferentially along the tube body 200 and is connected end to end to form a closed loop, which makes the latching tongue 230 and the second connection end 210 of the tube body 200 together form a pagoda-shaped male plug. The card slot 121 extends circumferentially along the inner hole of the tube connector 100 and is connected end to end, which makes the first connection end 120 of the tube connector 100 form a pagoda-shaped female plug. The tube connector 100 is formed by enclosing a plurality of components, and these components are detachable, which means that the tube connector 100 can be disassembled into several parts for easy disassembly and assembly between the first connection end 120 and the second connection end 210. It should be noted that the components need to be hermetically arranged to ensure that there is no leakage during the injection of nutrient solution.

[0053] Obviously, through the pagoda-shaped design, the tight fit between the tube body 200 and the tube connector 100 is ensured, thereby improving the connection stability. The pagoda-shaped male plug and the pagoda-shaped female plug make the plugging process simple and fast, and also facilitate disassembly. Similarly, this design reduces the size of the second connection end 210, thereby reducing the irritation to the patient when passing through the pharynx and alleviating the discomfort.

[0054] It should be noted that the pipe joint 100 is composed of multiple detachable components. Exemplarily, the pipe joint 100 includes two components. One component has a convex post, and the other component has a corresponding jack. The convex post and the jack are connected by interference fit to achieve fixation and sealing. Of course, in other embodiments, the pipe joint 100 includes two components, and the two components are snap-connected to achieve fixation and sealing. Or, the pipe joint 100 includes two components. After the two components are closed, an elastic sleeve is sleeved to achieve fixed connection. Or, the pipe joint 100 includes two components, and the two components are magnetically connected after being closed.

[0055] In addition, by using multiple components of the pipe joint 100 to clamp the second connection end 210, a sealed connection between the first connection end 120 and the second connection end 210 can be achieved, and the sealing performance is strong.

[0056] As Figure 2 shown, in some embodiments, the tongue 230 and the groove 121 are in interference fit, and the tongue 230 and the groove 121 are in conical fit.

[0057] In these embodiments, it is aimed to ensure the firmness and sealing performance of the connection between the pipe joint 100 and the pipe body 200, and at the same time, it is also convenient for installation and disassembly. Interference fit means that the fit clearance between the tongue 230 and the groove 121 is very small, even negative, that is, the size of the tongue 230 is slightly larger than the size of the groove 121. This design causes a certain extrusion when the tongue 230 is inserted into the groove 121, thereby ensuring the tightness and stability of the connection. Conical fit means that the tongue 230 and the groove 121 adopt a conical design. When the tongue 230 is inserted into the groove 121, the contact area between the conical surfaces increases with the increase of the insertion depth, which not only increases the stability of the connection but also improves the sealing performance.

[0058] Obviously, the interference fit and conical fit between the tongue 230 and the groove 121 ensure the tightness and sealing performance of the connection and prevent fluid leakage. Although interference fit is adopted, due to the conical fit design, the insertion process becomes relatively simple and fast, and it is also convenient for disassembly.

[0059] Manufacturing materials For the pipe body 200 and the pipe joint 100 to achieve interference fit and conical fit, the material selection is crucial. Usually, these components can be made of medical-grade flexible materials, such as medical silica gel or polyurethane, etc. These materials have both sufficient flexibility and good biocompatibility.

[0060] In addition, since one end of the tongue 230 near the end of the second connection end 210 is a conical surface, it has a guiding effect and is beneficial to passing the second connection end 210 of the pipe body 200 through the oropharynx and nasopharynx, further reducing the discomfort of the patient during the intubation process.

[0061] As Figure 4 shown, in some embodiments, one end of the tongue 230 facing away from the tube body 200 has a plurality of notches 231; wherein, when the number of notches 231 is multiple, the multiple notches 231 are arranged at intervals along the extending direction of the tongue 230.

[0062] In this embodiment, by providing the notches 231 on the tongue 230, the tongue 230 is not a complete solid of revolution, which can avoid the over-positioning caused by production tolerances during assembly, resulting in the first connection end 120 not being fully closed, and there is a liquid leakage at the connection between the first connection end 120 and the second connection end 210.

[0063] Exemplarily, in this embodiment, the number of notches 231 is 2. Of course, in other embodiments, the number of notches 231 is 3, 4, 5, 6, 7, etc.

[0064] As Figure 2 and Figure 3 shown, in some embodiments, the number of tongues 230 is multiple, and the number of slots 121 is multiple. The multiple tongues 230 are arranged in sequence along the extending direction of the second connection end 210, and the multiple slots 121 are arranged in sequence along the extending direction of the first connection end 120; wherein, when the tongue 230 and the slot 121 are in a clamped state, the tongue 230 and the slot 121 are arranged in one-to-one correspondence.

[0065] In these embodiments, through the clamping cooperation of multiple groups of tongues 230 and slots 121, the sealing performance at the connection between the first connection end 120 and the second connection end 210 can be improved, and the probability of liquid leakage can be reduced.

[0066] Exemplarily, in this embodiment, the number of tongues 230 is 2, and the number of slots 121 is 2. Of course, in other embodiments, the number of tongues 230 is 3, and the number of slots 121 is 3; or, the number of tongues 230 is 4, and the number of slots 121 is 4; or, the number of tongues 230 is 5, and the number of slots 121 is 5, etc.

[0067] As Figure 4 、 Figure 5 and Figure 6 shown, in some embodiments, the connection between the tongue 230 and the tube body 200 is provided with a smooth transition, and the edges of the tongue 230 are provided with a smooth transition.

[0068] In these embodiments, the smooth transition at the connection between the tongue 230 and the tube body 200 means that the connection between the tongue 230 and the tube body 200 has been specially treated to make its edge smoother, avoiding the possible irritation to the patient caused by the sharp edge.

[0069] The smooth transition of the edges and corners of the tongue 230 means that the edges and corners of the tongue 230 are also smoothed to reduce friction and discomfort during the insertion process.

[0070] For example, a smooth transition is achieved at the connection between the tongue 230 and the tube body 200 by setting a chamfer, and the edges and corners of the tongue 230 are smoothly transitioned.

[0071] like Figure 6 As shown, in some embodiments, the tube body 200 has a third connecting end 220, and the third connecting end 220 is bent.

[0072] In these embodiments, the third connection end 220 and the second connection end 210 are arranged opposite to each other, the third connection end 220 is used to be inserted into the body and retained, and the third connection end 220 is provided with an outlet 221 for discharging the nutrient solution.

[0073] The third connection end 220 is usually used to fix in the body to prevent the nutrition tube from being pulled out by slight external force or the patient unconsciously. In order to improve the restraint force between the third connection end 220 and the human tissue, the third connection end 220 is bent.

[0074] For example, in clinical practice, the third connecting end 220 is configured to be in a pigtail shape or a spiral shape, etc.

[0075] In some embodiments, a steel wire is passed through the tube body 200 .

[0076] In these embodiments, a steel wire may be pre-reserved within the tube body 200 to increase the overall rigidity of the tube body 200 and facilitate control of the intubation. In particular, when the third connecting end 220 is a pre-formed shape such as a pigtail, a steel wire must be inserted to increase its straightness and facilitate smooth intubation.

[0077] It should be noted that after completing the pipe threading, just pull out the wire.

[0078] like Figure 1 and Figure 2 As shown, in some embodiments, the present application also provides a nutrition tube system, which includes an external nutrition supply device and a nutrition tube as described in any of the above embodiments, and the nutrition tube has a fourth connection end 110, and the fourth connection end 110 and the interface of the external nutrition supply device are detachably connected.

[0079] Since the above-mentioned nutrition tube has the above-mentioned technical effects, the nutrition tube system including the nutrition tube should have the same technical effects, which will not be described in detail here.

[0080] Exemplarily, the interface of the external nutrition supply device is threadedly connected to the fourth connection end 110. Of course, in other embodiments, the interface of the external nutrition supply device and the fourth connection end 110 are connected by plugging and unplugging, and so on.

[0081] Among them, the external nutrition supply device is a syringe or an infusion bag.

[0082] In all the examples shown and described here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values.

[0083] It should be noted that like reference numerals and letters denote like items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0084] The above-described embodiments merely represent several implementation manners of the present application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the present application. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application.

Claims

1. A nutritional tube, characterized in that, The nutrition tube includes a tube body and a tube joint, the tube joint has a first connecting end, the hole wall of the inner hole of the first connecting end is provided with a card groove, the tube body has a second connecting end, the second connecting end is provided with a latch, the height of the latch protruding from the tube body gradually increases in the direction away from the end of the second connecting end or first gradually increases and then decreases; wherein, the second connecting end can be passed through the inner hole of the first connecting end so that the latch and the slot are engaged.

2. The nutritional tube according to claim 1, wherein, The tongue is extended along the circumference of the tube body and is connected end to end, and the second connecting end and the tongue constitute a pagoda-shaped male plug; the slot is extended along the circumference of the inner hole and is connected end to end, and the first connecting end constitutes a pagoda-shaped female plug; wherein, at least one of the first connecting end, the first connecting end and the tongue is configured as an elastic structure so that the pagoda-shaped male plug and the pagoda-shaped female plug can form a plug-in fit.

3. The nutritional tube according to claim 1, characterized in that, The tongue is extended along the circumference of the tube body and is connected end to end, and the second connection end and the tongue constitute a pagoda-shaped male plug; the slot is extended along the circumference of the inner hole and is connected end to end, and the first connection end constitutes a pagoda-shaped female plug; wherein, the pipe joint is formed by a plurality of components, and adjacent components are detachably connected.

4. The nutritional tube according to claim 2 or 3, characterized in that, The latch tongue and the latch groove are interference fit, and the latch tongue and the latch groove are conically fit.

5. The feeding tube according to claim 4, wherein, The end of the tongue away from the tube body has a plurality of notches. If there are a plurality of notches, the plurality of notches are spaced apart along the extending direction of the tongue.

6. The nutrition tube according to claim 4, characterized in that There are multiple latching tongues and multiple slots, and the multiple latching tongues are arranged in sequence along the extension direction of the second connection end, and the multiple slots are arranged in sequence along the extension direction of the first connection end; wherein, when the latching tongues and the slots are in a latched state, the latching tongues and the slots are arranged in one-to-one correspondence.

7. The nutrition tube according to claim 1, wherein The connection between the latch tongue and the tube body is smoothly transitioned, and the edges and corners of the latch tongue are smoothly transitioned.

8. The nutrition tube according to claim 1, characterized in that, The tube body has a third connecting end, and the third connecting end is bent.

9. The nutrition tube according to claim 8, wherein A steel wire is passed through the tube body.

10. A nutritional tube system, characterized in that, The nutrition tube system includes an external nutrition supply device and a nutrition tube according to any one of claims 1 to 9, wherein the nutrition tube has a fourth connection end, and the fourth connection end is detachably connected to the interface of the external nutrition supply device.

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