Foldable anti-blocking percutaneous nutrition tube

Abstract

This application relates to the field of medical assistive device technology, and in particular to a foldable, anti-clogging percutaneous feeding tube, which includes a tube body, an air bladder, an inflation tube, a fixing disc, and a fixing ring. The tube body includes an inner core tube layer, a central sleeve layer, a folded skeleton layer, and an outer layer. The inner core tube layer has an internal channel, and the side wall of the central sleeve layer has an air cavity area. Inflating or inhaling the air cavity area causes the folded skeleton layer to be supported or folded, simultaneously causing the internal channel to close or open. The folded skeleton layer includes a skeleton unit and flexible wiring. This application ensures normal nutrient infusion when the internal channel is open, while controlling the internal channel to be closed when not infusion, thereby reducing the large amount of body fluid or dirt entering the tube body. It has the beneficial effects of being less prone to clogging during use and significantly reducing the number of replacements. At the same time, the folding method, which uses the moving fixing ring to straighten the flexible wiring and pull the front end of the tube body to fold into the internal channel, greatly reduces the patient's pain and infection risk.

Description

Technical Field

[0001] This application relates to the field of medical assistive device technology, and in particular to a foldable, anti-clogging percutaneous feeding tube. Background Technology

[0002] In existing gastrostomy or enterostomy surgeries, a feeding tube is typically used to provide patients with necessary nutritional or medication infusions to ensure postoperative recovery. The existing feeding tube structure mainly includes a flexible silicone tube body, an inflatable balloon fixed to the front end of the tube body, a ventilation tube fixed to the outer wall of the tube body for inflating the balloon, and a fixing wing or plate for securing the end of the tube body. During use, medical staff, depending on different medical needs, place the front end of the tube in the stomach or small intestine during the gastrostomy procedure. The front end of the tube is then secured by inflating the balloon in the ventilation tube to prevent it from dislodging from its designated position. The end of the tube is partially left outside the body, and the fixing wing is secured to the skin surface with sutures or medical adhesive to achieve stable placement of the feeding tube.

[0003] However, in practical applications, because the feeding tube needs to remain in the body for a long time, when using the conventional feeding tube, bodily fluids or dirt can easily enter the tube when infusion is not needed. These fluids, along with the nutrient solution remaining on the inner wall of the tube, can deposit and adhere to the inner wall, causing blockage and affecting the normal infusion effect. To address this blockage problem, existing technologies mainly solve it by flushing with saline solution. However, when there is a large amount of blockage inside the feeding tube, it is difficult to flush it away. Increasing the flushing pressure can increase the patient's pain and is also not conducive to use. Summary of the Invention

[0004] In order to reduce the risk of blockage caused by bodily fluids or dirt entering the tube during non-infusion periods while ensuring normal infusion effect, this application provides a foldable anti-blockage percutaneous feeding tube.

[0005] This application provides a foldable, anti-clogging percutaneous nutrient tube, which adopts the following technical solution: A foldable, anti-clogging percutaneous nutrient tube includes a tube body, an air bladder, an inflation tube, and a fixing plate. The tube body includes an inner core tube layer, a central sleeve layer, a folded skeleton layer, and an outer layer arranged sequentially from the inside to the outside. The inner core tube layer has an internal channel for nutrient solution infusion. The inner wall of the central sleeve layer is fixed to the outer wall of the inner core tube layer. The side wall of the central sleeve layer has a sealed air cavity area. The tube body has a first flow channel for inflating the air cavity area. Inflating or inhaling the air cavity area causes the folded skeleton layer to be supported or folded, while simultaneously causing the internal channel to close or open.

[0006] By adopting the above technical solution, during normal infusion using the feeding tube, air is simply injected into the air chamber area through the first flow channel. The change in air pressure causes the folded skeleton layer and inner core tube layer to be supported, restoring the inner tube channel to a circular tubular flow channel structure, thus ensuring the normal infusion effect of the inner tube channel. When infusion is not required, the negative pressure created by suctioning air into the air chamber area causes the folded skeleton layer and inner core tube layer to gradually fold and flatten, making the inner tube channel appear flat overall. This reduces the amount of body fluid or dirt entering the inner tube channel, thereby reducing the likelihood of blockage caused by body fluid or dirt adhering to the inner wall of the inner tube channel. Combined with subsequent flushing with a small amount of physiological saline, the service life of the inner tube channel can be ensured, the replacement frequency can be reduced, and the contamination problem caused by frequent replacement can also be reduced.

[0007] Preferably, a fixed connector is provided at the end of the tube away from the airbag, the flow channel inside the fixed connector is connected to the channel inside the tube, and the fixed plate is disposed on the fixed connector.

[0008] By adopting the above technical solution, the setting of the fixed tube helps to increase the structural strength and stability of the part of the feeding tube left outside the human body. In combination with the setting of the fixing plate, it ensures the stability of the tube body and the human skin, and reduces the additional pain caused to the patient by the shaking of the tube body.

[0009] Preferably, the folded skeleton layer includes several sets of skeleton units arranged in an array along the tube axis, and flexible wiring for connecting the several sets of skeleton units together in series. Each skeleton unit includes several flexible bone pieces that are connected end to end to form a polygonal structure. Adjacent flexible bone pieces are rotatably connected, and adjacent sets of skeleton units are also rotatably connected through flexible bone pieces. The inner side of the skeleton unit is connected to the outer wall of the central sleeve layer, and the outer side of the skeleton unit is connected to the outer layer.

[0010] By adopting the above technical solution, with the cooperation of flexible wiring and flexible bone pieces, the flexible rotation and folding of the folded skeleton layer is realized, thereby cooperating with the inflation and deflation process of the air cavity area and effectively controlling the folding or supporting process of the tube body.

[0011] Preferably, the flexible wiring connects several groups of skeleton units into a whole in a mesh or spiral winding manner.

[0012] By adopting the above technical solution, the flexible wiring in the mesh or spiral winding method will have some stress. This stress is attached to the tube body. When the tube body is placed in the human body, the amplitude of tube body swing caused by intestinal peristalsis is reduced, which effectively reduces the foreign body sensation of the tube body in the human body and the patient's pain.

[0013] Preferably, a fixing ring is fitted on the fixed connector, one end of the flexible connector is fixed on the fixed connector, and the other end of the flexible connector passes through the folded skeleton layer and enters the inner channel of the pipe from the front end of the pipe body. It then passes out from the inner flow channel side wall of the fixed connector and connects to the fixing ring. Moving the fixing ring causes the flexible connector to straighten so as to pull the front end of the pipe body to fold and fit into the inner channel.

[0014] By adopting the above technical solution, during use, after the front end of the feeding tube is inserted into the stomach or small intestine, some tissue fluid will inevitably adhere to its outer wall. When the feeding tube needs to be replaced, medical staff can use the sliding fixing ring to straighten the flexible connector, thereby causing the front end of the tube to gradually roll inward until the part of the tube with tissue fluid from the stomach or small intestine folds inward and enters the tube channel. In other words, the tube itself isolates the front part of the tube, avoiding contact between the front end of the tube and other tissues in the body during the process of the feeding tube being removed, effectively reducing the risk of cross-infection of tissue fluid between different tissues.

[0015] Preferably, a medical connector is detachably connected to the end of the fixed tube away from the tube body. The medical connector is provided with a sealing cap. After the medical connector is installed in the fixed tube, it can prevent the fixing ring from slipping off the fixed tube.

[0016] By adopting the above technical solution, the use of the medical connector and the sealing cap ensures the normal delivery of nutrient solution or medicine to the human body through the feeding tube by medical staff. At the same time, the detachable connection of the medical connector can limit the fixing ring, preventing the fixing ring from sliding outward and causing the front end of the tube to flip inward when the feeding tube does not need to be replaced, which is more conducive to use.

[0017] Preferably, the fixed pipe is provided with a second flow channel communicating with the first flow channel, and the outer wall of the fixed pipe is provided with a first pipe joint for introducing gas or liquid into the second flow channel.

[0018] By adopting the above technical solution, when in use, the air supply tube or infusion tube is connected to the outside through the first tube connector, which makes it easy for medical staff to control the folding of the folding skeleton layer.

[0019] Preferably, the outer wall of the fixed pipe is provided with a second pipe joint, the inflation pipe is fixed to the outer wall of the pipe body, one end of the inflation pipe is connected to the airbag, and the other end of the inflation pipe passes through the fixed plate and is connected to the second pipe joint.

[0020] By adopting the above technical solution, the second tube connector facilitates medical staff to inflate the air tube, thereby controlling the airbag fixation to secure the front end of the tube.

[0021] In summary, this application includes at least one of the following beneficial technical effects: By controlling the inflation or aspiration of the air chamber area through the first flow channel, the folded skeleton layer and the inner channel can be switched between a flat folded state and a stretched round tube infusion state. This reduces the amount of body fluid or dirt entering the inner channel, thereby reducing the likelihood of blockage caused by body fluid or dirt adhering to the inner wall of the inner channel. Combined with subsequent flushing with a small amount of physiological saline, the service life of the inner channel can be ensured, the replacement frequency can be reduced, and the pollution problem caused by frequent replacement can also be reduced. By using flexible wiring in conjunction with multiple flexible bone plates, the process of changing the tube's folding or supporting state is ensured to be smooth. At the same time, with the pulling of the fixing ring, the front end of the tube can be controlled to fold inward into the tube channel, thereby isolating the front end of the tube and helping to reduce the problem of cross-infection between different tissues. By setting up fixed connecting pipes and medical connectors, the stability of the portion of the feeding tube left outside the body is ensured, which helps to improve the convenience of the feeding tube replacement process. Attached Figure Description

[0022] Figure 1 This is an isometric schematic diagram of the main nutrient tube structure in Embodiment 1 of this application; Figure 2 This is a schematic diagram of the cross-sectional structure of the nutrient tube, which mainly reflects the state changes during the inflation process of the tube in Embodiment 1 of this application. Figure 3 This is a schematic diagram of the cross-sectional structure of the nutrient tube parallel to the axial direction in Embodiment 1 of this application; Figure 4 This is a structural schematic diagram illustrating the connection method of the skeleton unit in Embodiment 1 of this application; Figure 5 This is a schematic diagram of the structure that mainly illustrates the connection relationship of the flexible bone pieces in Embodiment 1 of this application; Figure 6 This is a schematic diagram of the layer structure in Embodiment 1 of this application, mainly showing the folded state of the front end of the nutrient tube; Figure 7 This is a structural schematic diagram of the flexible wiring winding method, which is the main feature of Embodiment 2 of this application.

[0023] Reference numerals: 1. Tube body; 11. Inner core tube layer; 111. Inner tube channel; 12. Central sleeve layer; 121. Air cavity area; 13. Folded skeleton layer; 131. Skeleton unit; 1311. Flexible bone plate; 1312. Rotating ear plate structure; 132. Flexible wiring; 14. Outer layer; 2. Airbag; 3. Inflation tube; 4. Fixing plate; 41. Embedded groove; 5. First flow channel; 6. Fixing connector; 61. Second flow channel; 62. First tube connector; 63. Second tube connector; 7. Fixing ring; 8. Medical connector; 81. Sealing cap. Detailed Implementation

[0024] The following is in conjunction with the appendix Figure 1 - Appendix Figure 7 This application will be described in further detail. Example

[0025] This application discloses a foldable, anti-clogging percutaneous nutrient tube.

[0026] Reference Figure 1 A foldable, anti-clogging percutaneous nutrient tube includes a fixed connector 6, a tube body 1, an air bladder 2, an inflation tube 3, and a fixing plate 4. One end of the fixed connector 6 is fixed to the end of the tube body 1. A first connector 62 and a second connector 63 are formed on the fixed connector 6. In this embodiment, the fixed connector 6 is a hollow tube with a solid inner wall made of silicone material. The connection between the fixed connector 6 and the tube body 1 is achieved by adhesive bonding or welding. The air bladder 2 is formed at the front end of the tube body 1. The inflation tube 3 is used to supply air to the air bladder 2. In this application, the inflation tube 3 is glued or welded to the outer wall of the tube body 1 as a whole. One end of the inflation tube 3 is connected to the air bladder 2, and the other end passes through the fixing plate 4 and is connected to the second connector 63.

[0027] Reference Figure 1 The fixing plate 4 is installed on the end of the fixing tube 6 near the tube body 1 by adhesive. When in use, after the tube body 1 of the feeding tube is inserted into the patient's body, the air supply tube 3 can be inflated through the second tube connector 63 to control the inflation of the air bag 2, thereby positioning the front end of the tube body 1. Then, the medical staff fixes the fixing plate 4 to the skin surface by suturing, thereby fixing the feeding tube. In order to facilitate the connection between the fixing plate 4 and the suture, multiple suture grooves 41 are opened at intervals on the periphery of the fixing plate 4 for the suture to be embedded to limit the fixing plate 4.

[0028] Reference Figure 2 and Figure 3 The sidewall of the tube body 1 is composed of a multi-layer structure, including an inner core tube layer 11, a central sleeve layer 12, a folded skeleton layer 13, and an outer layer 14 from the inside to the outside. The inner core tube layer 11 has an inner channel 111 formed on its inner side for infusing nutrient solution or medicine. The central sleeve layer 12 is coaxially sleeved on the inner core tube layer 11, and the inner wall of the central sleeve layer 12 is fixed to the outer wall of the inner core tube layer 11. The outer wall of the central sleeve layer 12 also forms a sealed air cavity area 121. In this application, the central sleeve layer 12 is composed of two thin film materials. The two thin film materials are coaxially sleeved together, and the axial ends of the two thin film materials are sealed by adhesive or fusion, so that an air cavity area 121 is formed between the two thin film materials. In this embodiment, the thin film material can be made of TPU or silicone.

[0029] Reference Figure 2 and Figure 3A second flow channel 61 is provided on the fixed connecting pipe 6, which is connected to the first flow channel 5, and the first pipe joint 62 is connected to the second flow channel 61. In use, an air pipe is connected to the first pipe joint 62, and then gas is introduced into the first pipe joint 62. The gas enters the first fluid through the first pipe joint 62 and the second flow channel 61, and finally enters the air cavity area 121, thereby controlling the expansion of the air cavity area 121. Correspondingly, by evacuating the first pipe joint 62 in the opposite direction, the air cavity area 121 can be controlled to return to the flattened state. In this embodiment, in order to ensure the normal folding and front end folding process of the tube body 1, the air cavity area 121 does not need to be fully filled when it is filled with air. It is only necessary to ensure that the inner channel 111 is opened to a cross-section close to a circular tube shape.

[0030] Reference Figure 2 and Figure 4 The folded skeleton layer 13 is sleeved on the outer wall of the central sleeve layer 12. The folded skeleton layer 13 is composed of skeleton units 131 and flexible wiring 132. Several sets of skeleton units 131 are arranged in a linear array along the axial direction of the tube body 1, and adjacent sets of skeleton units 131 are movably connected. Specifically, each set of skeleton units 131 is composed of several flexible bone pieces 1311, and the several flexible bone pieces 1311 are connected end to end to form a closed polygonal structure. Adjacent flexible bone pieces 1311 are rotatably connected. In this embodiment, a set of skeleton units 131 is a rhomboid structure formed by four flexible bone pieces 1311, and its four corners are the rotatable connection points of the flexible bone pieces 1311.

[0031] Reference Figure 4 and Figure 5 Specifically, each flexible bone piece 1311 is rectangular in shape, with rotating ear plate structures 1312 forming at both ends of its length and width. Adjacent flexible bone pieces 1311 are hinged together through their corresponding rotating ear plate structures 1312. Flexible wires 132 are used to connect several sets of skeleton units 131 into a whole. In this embodiment, the flexible wires 132 are made of steel wires or steel ropes with good toughness. The flexible wires 132 are divided into two groups. One group of flexible wires 132 passes through the rotating ear plate structures 1312 corresponding to several sets of skeleton units 131 along the axial direction of the tube body 1, thereby connecting several sets of skeleton units 131 into a whole. The other group of flexible wires 132 connects the rotating ear plate structures 1312 corresponding to the four flexible bone pieces 1311 of two adjacent sets of skeleton units 131 together. Through the cooperation of the two groups of flexible wires 132, the connection of multiple sets of skeleton units 131 can be realized, while ensuring that adjacent sets of skeleton units 131 can be folded and rotated.

[0032] Reference Figure 2 and Figure 4In use, the inner side of the skeleton unit 131 and the outer wall of the central sleeve layer 12 are in line contact through adhesive bonding, and the outer side of the skeleton unit 131 and the inner wall of the outer attachment layer 14 are in line contact through adhesive bonding; during the inflation process into the air cavity region 121 (such as... Figure 2 (a is an inflated but not fully inflated state). The air cavity 121 causes the central sleeve layer 12 to expand, thereby supporting the skeleton unit 131. During the rotation and expansion of the skeleton unit 131, the outer layer 14 is gradually supported, and at the same time, the central sleeve layer 12 and the inner core tube layer 11 are gradually formed into a circular tube structure, thereby opening the tube channel 111 to facilitate subsequent food or drug infusion. During the process of extracting gas from the air cavity 121, under the action of negative pressure, the central sleeve layer 12 causes the skeleton unit 131 to gradually fold, from flattening the inner core tube layer 11, until the tube channel 111 is closed (e.g., ...). Figure 2 b represents the closed state of the tube channel 111 when it is not inflated, which reduces the amount of body fluids or dirt entering the patient's body and adhering to the inner wall of the tube channel 111 during non-infusion processes.

[0033] Reference Figure 1 and Figure 6 In addition, a fixing ring 7 is also fitted on the fixing pipe 6. One end of the flexible wire 132 is fixed to the connection surface between the fixing pipe 6 and the pipe body 1 by welding. The other end of the flexible wire 132 passes through several sets of skeleton units 131 in sequence and then passes out from the front end of the pipe body 1, and then wraps back into the inner channel 111. Finally, it passes out from the side wall of the fixed pipe 6 and is fixedly connected to the fixing ring 7. Thus, when the fixing ring 7 is controlled to move away from the pipe body 1, the fixing ring 7 drives the flexible wire 132 to straighten, thereby pulling the front end of the pipe body 1 to gradually fold inward, so that the front end of the pipe body 1 is folded inward and fitted into the inner channel 111, that is, the pipe body 1 itself is used to isolate the front end of the pipe body 1.

[0034] Reference Figure 1 and Figure 6 When in use, after the feeding tube is inserted into the patient's body, the front end of the tube body 1 needs to be inserted into the intestine or stomach. During the insertion process, the front end of the tube body 1 will inevitably be contaminated with tissue fluid from the intestine or stomach. Since the feeding tube usually needs to be replaced regularly, if the feeding tube is removed directly during the replacement process, the tissue fluid from the intestine or stomach contaminated with the front end of the tube body 1 is more likely to come into contact with other tissue fluids in the patient's body, which can easily lead to cross-infection. Therefore, when it is necessary to remove the feeding tube, the flexible connector 132 can be pulled by the fixing ring 7. Under the action of the flexible connector 132, the front end of the tube body 1 will gradually retract into the tube channel 111. The front end of the tube body 1 is isolated by the side wall of the tube body 1. That is, during the entire tube removal process, only the outer layer 14 is in contact with the corresponding tissue at a fixed position, which basically eliminates the exchange of tissues between different tissues and greatly reduces the risk of infection.

[0035] Reference Figure 6 To ensure that the skeleton unit 131 can be smoothly folded during the pulling of the flexible connector 132, the flexible bone piece 1311 of any skeleton unit 131 in this application is made of a flexible material with deformation effect. In this embodiment, silicone rubber is preferred, and its hardness parameter is set to 20A to 80A, preferably 40±5A. Thus, during the process of forming a double-layer tube 1 by inward folding of the skeleton unit 131, the rotation of the skeleton unit 131 is ensured by the deformation of the flexible bone piece 131 itself.

[0036] Reference Figure 1 In addition, a medical connector 8 is detachably connected to the end of the fixed connecting tube 6 away from the tube body 1. The medical connector 8 is used to connect the nutrition tube and the external infusion tube. In this embodiment, the medical connector 8 can be a medical two-way connector. At the same time, a sealing cap 81 is also connected to the medical connector 8, which is convenient for protecting and sealing the medical connector 8 when not in use. In this embodiment, the medical connector 8 is installed on the fixed connecting tube 6 by plugging or threading. After the medical connector 8 is installed, its end abuts against the fixing ring 7, forming an anti-dislodgement limit for the fixing ring 7. When it is necessary to pull the fixing ring 7, the medical connector 8 can be removed.

[0037] The implementation principle of this application embodiment is as follows: After the feeding tube 1 is inserted into the patient's body through a fistula surgery, air is inflated into the air tube 3 through the second tube connector 63, causing the air bag 2 to expand, thereby fixing the front end of the tube 1 in a designated position inside the patient's body, and the fixation plate 4 is sutured to the patient's skin surface. The medical connector 8 is connected to the end of the fixation tube 6. When feeding or infusion of medication is required, air or water is pumped into the air cavity area 121 through the first tube connector 62 to open the inner core tube channel 111. Then, a feeding device is connected to the medical connector 8 for feeding. After feeding, air is drawn or water is drawn from the air cavity area 121 through the first tube connector 62, causing the tube 1 to fold inside the tube. Channel 111 is closed to prevent large amounts of bodily fluids or dirt from entering the tube. Afterward, simply flushing the channel 111 with saline solution periodically will prevent the tube body 1 from becoming blocked. When it is necessary to replace or remove the tube, simply pull the fixing ring 7 to straighten the flexible connector 132, thereby pulling the front end of the tube body 1 inward to form a double-folded structure with the front end of the tube body 1 inside the tube body 1. Then, the tube can be withdrawn normally to remove the feeding tube from the patient's body. Since only the front end of the tube body 1 does not come into contact with other tissues in the patient's body during the withdrawal process, the problem of cross-infection caused by contact between different tissue fluids is basically avoided, greatly reducing the risk of infection for the patient. Example

[0038] Reference Figure 7The difference between this embodiment and Embodiment 1 is that in this embodiment, the flexible wiring 132 connects several groups of skeleton units 131 together in a mesh or spiral winding manner; specifically, the mesh winding manner of the flexible wiring 132 is as follows: Figure 7 a. Flexible wiring 132 spiral winding method as follows Figure 7 b; When using the above two methods to insert the feeding tube, the intestinal peristalsis in the patient's body can easily affect the insertion process of the tube 1, causing it to shake and deviate in direction. However, using a mesh or spiral winding method can generate stress in the flexible wiring 132 itself that can resist deformation, thereby ensuring a smoother insertion process of the tube 1. At the same time, it can also effectively reduce the shaking phenomenon of the tube 1 caused by intestinal peristalsis in the later use process. Compared with the linear series method in Example 1, it reduces the patient's pain experience when using it.

[0039] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A foldable, anti-clogging percutaneous nutrient tube, comprising a tube body (1), an air bladder (2), an inflation tube (3), and a fixing plate (4), characterized in that: The tube body (1) includes an inner core tube layer (11), a central sleeve layer (12), a folded skeleton layer (13), and an outer layer (14) arranged sequentially from the inside to the outside. The inner core tube layer (11) has an inner channel (111) for nutrient solution infusion. The inner wall of the central sleeve layer (12) is fixed to the outer wall of the inner core tube layer (11). The side wall of the central sleeve layer (12) has a sealed air cavity area (121). The tube body (1) has a first flow channel (5) for inflating the air cavity area (121). Inflating or inhaling the air cavity area (121) causes the folded skeleton layer (13) to be supported or folded, while simultaneously causing the inner channel (111) to close or open.

2. The foldable anti-clogging percutaneous nutrient tube according to claim 1, characterized in that: A fixed connector (6) is provided at the end of the tube (1) away from the airbag (2). The flow channel inside the fixed connector (6) is connected to the channel (111) inside the tube. The fixed plate (4) is provided on the fixed connector (6).

3. A foldable, anti-clogging percutaneous nutrient tube according to claim 2, characterized in that: The folded skeleton layer (13) includes a number of skeleton units (131) arranged in an array along the axial direction of the tube body (1), and a flexible connector (132) for connecting the number of skeleton units (131) together in series. The skeleton unit (131) includes a number of flexible bone pieces (1311) connected end to end to form a polygonal structure. Adjacent flexible bone pieces (1311) are rotatably connected, and adjacent skeleton units (131) are also rotatably connected through flexible bone pieces (1311). The inner side of the skeleton unit (131) is connected to the outer wall of the central sleeve layer (12), and the outer side of the skeleton unit (131) is connected to the outer attachment layer (14).

4. A foldable, anti-clogging percutaneous nutrient tube according to claim 3, characterized in that: The flexible wiring (132) connects several sets of skeleton units (131) into a whole in a mesh or spiral winding manner.

5. A foldable, anti-clogging percutaneous nutrient tube according to claim 3 or 4, characterized in that: A fixing ring (7) is fitted on the fixed connector (6). One end of the flexible connector (132) is fixed on the fixed connector (6). The other end of the flexible connector (132) passes through the folded skeleton layer (13) and enters the inner channel (111) from the front end of the tube body (1). It then passes out from the inner flow channel side wall of the fixed connector (6) and connects to the fixing ring (7). Moving the fixing ring (7) causes the flexible connector (132) to straighten so as to pull the front end of the tube body (1) to fold and fit into the inner channel (111).

6. A foldable, anti-clogging percutaneous nutrient tube according to claim 5, characterized in that: The fixed tube (6) is detachably connected to a medical connector (8) at the end away from the tube body (1). A sealing cap (81) is provided on the medical connector (8). After the medical connector (8) is installed on the fixed tube (6), it can prevent the fixing ring (7) from slipping off the fixed tube (6).

7. A foldable, anti-clogging percutaneous nutrient tube according to claim 2, characterized in that: The fixed pipe (6) is provided with a second flow channel (61) that communicates with the first flow channel (5), and the outer wall of the fixed pipe (6) is provided with a first pipe joint (62) for introducing gas or liquid into the second flow channel (61).

8. A foldable, anti-clogging percutaneous nutrient tube according to claim 2, characterized in that: The outer wall of the fixed pipe (6) is provided with a second pipe joint (63). The inflation pipe (3) is fixed to the outer wall of the pipe body (1). One end of the inflation pipe (3) is connected to the air bag (2). The other end of the inflation pipe (3) passes through the fixed plate (4) and is connected to the second pipe joint (63).

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