A concealed anti-falling nasogastric tube and assembly

Abstract

The utility model discloses a kind of invisible anti-falling nose gastric tube, comprising: inner tube, outer tube and nose clamp component;Inner tube includes first end and second end;First end is connected with nose clamp component, and second end is inserted into stomach;Outer tube is embedded into first end, and outer tube can be displaced along the axial direction of inner tube adjustment.The utility model is through telescopic nested type cooperation design of outer tube and inner tube, so that outer tube can be flexibly stored into inner tube, reduce the exposed length of pipeline.Feeding time, only need to simply pull out outer tube, it can be quickly connected feeding device to operate, substantially improve clinical feeding efficiency.After feeding, outer tube can be easily pushed back into inner tube and fixed, operation process is simple, reduce the work burden of nursing staff.

Description

Technical Field

[0001] This utility model relates to the field of gastric tube technology, and in particular to an invisible anti-dislodgement nasogastric tube and its components and a tube cutter. Background Technology

[0002] Currently, the main technical defects of gastric tubes used in clinical practice are as follows: Defects in Tube Length Adjustment: Existing gastric tubes employ a fixed-length, one-piece design, making it impossible to adjust the length of the external tubing segment according to individual patient anatomy and clinical treatment needs. This results in excessive redundancy in the external tubing. During nursing procedures such as changes in patient position, clothing changes, or nasal strip fixation, unplanned tube dislodgement due to traction is highly likely. During feeding, external force pulling on the tubing can cause friction against the patient's skin, increasing discomfort and potentially leading to complications such as local skin damage. This design flaw significantly impacts the safety and patient comfort of gastric tube use.

[0003] (2) Insufficient reliability of fixation method: Traditional fixation methods rely on a single nasal wing adhesive (such as ordinary nasal strips or low-viscosity medical tape), which has poor tensile strength. Especially when the patient is actively moving or sweating, the adhesion of the fixation device drops sharply, resulting in a significant increase in the risk of fixation failure.

[0004] (3) Inconvenient tube placement: Since the nasogastric tube body is made of flexible material, it must rely on an auxiliary guidewire for support during placement. However, the existing guidewire adopts an integrated design with the same length as the nasogastric tube. When it is necessary to shorten the external section of the gastric tube in clinical practice, the excessively long guidewire end will protrude from the tube end, which can easily cause mechanical damage to the digestive tract mucosa.

[0005] In summary, existing gastric tubes have problems in clinical application, such as high dislodgement rate, low patient comfort, and easy damage to the mucosa during installation. These problems not only reduce the safety and effectiveness of gastric tube use, but also increase medical risks and nursing costs, and urgently need to be solved through structural optimization and technological improvement. Utility Model Content

[0006] Therefore, this utility model proposes an invisible, non-detachable nasogastric tube and its components to solve the problems mentioned in the background art and overcome the shortcomings of the existing technology.

[0007] To achieve the above objectives, this utility model provides an invisible, non-dislodged nasogastric tube, comprising: an inner tube, an outer tube, and a nasal clip assembly; the inner tube includes a first end and a second end; the first end is connected to the nasal clip assembly, and the second end is inserted into the stomach; the outer tube is embedded in the first end, and the outer tube can be adjusted for displacement along the axial direction of the inner tube.

[0008] Preferably, the outer tube includes a third end and a fourth end, the outer peripheral surface of the third end is provided with an external thread, and the inner wall of the first end is provided with an internal thread, the internal thread and the external thread forming a threaded engagement structure for rotational adjustment.

[0009] In any of the above embodiments, it is preferred that an annular bracket is provided between the fourth end and the external thread. The annular bracket includes a support ring and a plurality of support bars distributed along the circumference of the outer tube, and the support ring is fixedly connected to each support bar.

[0010] In any of the above embodiments, it is preferred that a first limiting ring is provided on the fourth end, and a second limiting ring is provided on the inner surface of the first end, wherein the outer diameter of the first limiting ring is larger than the outer diameter of the second limiting ring.

[0011] In any of the above embodiments, it is preferred to further include a magnetic attraction component, which includes: a fixing ring, a magnetic ring base and a connecting tube. The fixing ring is connected to the first end, the connecting tube is disposed in the inner cavity of the magnetic ring base, and the connecting tube is in fluid communication with the first end. The fixing ring is provided with a first magnetic element, and the magnetic ring base is provided with a second magnetic element. The first magnetic element and the second magnetic element are magnetically attracted and connected.

[0012] In any of the above embodiments, it is preferred that the device further includes a protective cover and a connecting rope, wherein the protective cover is detachably coupled to one end of the connecting tube, one end of the connecting rope is connected to the protective cover, and the other end of the connecting rope is connected to the magnetic ring base.

[0013] In any of the above embodiments, it is preferred that the nose clip assembly includes a U-shaped frame and a third magnetic component, one end of the U-shaped frame is connected to the first end, and the other end of the U-shaped frame is provided with the third magnetic component, which forms a magnetic attraction with the second magnetic component.

[0014] In any of the above embodiments, it is preferred that the second end is provided with multiple through holes, which are arranged and distributed along the axial direction of the inner tube.

[0015] This utility model also discloses a concealed anti-dislodgement nasogastric tube assembly, including a guide wire and any of the above-mentioned concealed anti-dislodgement nasogastric tubes, with the guide wire inserted into the inner tube.

[0016] In any of the above embodiments, it is preferred to further include a snap fastener, which is sleeved on the guide wire and can slide along the axial direction of the guide wire. The snap fastener includes a snap body, a spring and an inner core. The snap body is provided with a through channel. One end of the inner core is slidably disposed in the snap body. The inner core is provided with a guide wire hole, which coincides with the through channel. The spring is disposed between the snap body and the inner core.

[0017] This utility model also discloses a tube cutter adapted to any of the above-mentioned invisible anti-dislodgement nasogastric tubes, including a cutting blade, a punching blade and a tube cutting body. The tube cutting body is provided with a guide channel inside. The cutting blade and the punching blade are respectively arranged along the axial direction of the guide channel. The cutting blade can cut the nasogastric tube located in the guide channel; the punching blade can punch through holes in the nasogastric tube.

[0018] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows: 1. This utility model utilizes a retractable, nested design between the outer and inner tubes, allowing the outer tube to be flexibly retracted into the inner tube, reducing the exposed length of the tubing. During feeding, simply pull out the outer tube and open it to quickly connect the feeder, significantly improving clinical feeding efficiency. After feeding, the outer tube can be easily pushed back into the inner tube for fixation, simplifying the operation and reducing the workload of nursing staff.

[0019] 2. Because the outer tube is nested within the inner tube throughout its movement, it avoids repeated friction between the exposed portion of a traditional gastric tube and the patient's skin, effectively reducing the risk of skin irritation and injury, and improving patient comfort and safety. The telescopic nesting structure remains stable after being pushed back and fixed, preventing accidental tube slippage and further reducing the incidence of unplanned tube dislodgement.

[0020] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of an invisible, non-detachable nasogastric tube structure according to an embodiment of the present invention.

[0022] Figure 2 This is a front view of the first end of a concealed, non-detachable nasogastric tube according to an embodiment of the present invention.

[0023] Figure 3 This is a front sectional view of the first end of a concealed, non-detachable nasogastric tube according to an embodiment of the present invention.

[0024] Figure 4 This is a schematic diagram of the outer tube structure of an invisible, non-detachable nasogastric tube according to an embodiment of the present invention.

[0025] Figure 5 This is a schematic diagram of the magnetic ring base structure of an invisible anti-dislodgement nasogastric tube according to an embodiment of the present invention.

[0026] Figure 6This is a cross-sectional view of the snap fastener in an invisible anti-dislodgement nasogastric tube assembly according to an embodiment of the present invention.

[0027] Figure 7 This is a schematic diagram of the pipe cutter according to an embodiment of the present invention.

[0028] Wherein: 1-Inner tube; 2-Outer tube; 3-First end; 4-Second end; 5-Third end; 6-Fourth end; 7-External thread; 8-Support ring; 9-Support bar; 10-First limiting ring; 11-Second limiting ring; 12-Fixing ring; 13-Magnetic ring base; 14-Connecting tube; 15-Protective cover; 16-Connecting rope; 17-U-shaped frame; 18-First magnetic component; 19-Second magnetic component; 20-Third magnetic component; 21-Through hole; 22-Guide wire; 23-Snap body; 24-Spring; 25-Inner core; 26-Through channel; 27-Guide wire hole; 28-Snap fastener; 29-Cut-off knife; 30-Punching knife; 31-Pipe cutting body. Detailed Implementation

[0029] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] like Figures 1 to 5 As shown, an embodiment of the present invention provides an invisible anti-dislodgement nasogastric tube, comprising: an inner tube 1, an outer tube 2, and a nasal clip assembly; the inner tube 1 includes a first end 3 and a second end 4; the first end 3 is connected to the nasal clip assembly, and the second end 4 is inserted into the stomach; the outer tube 2 is embedded in the first end 3, and the outer tube 2 can be adjusted for displacement along the axial direction of the inner tube 1.

[0032] In a preferred embodiment, the outer tube 2 and the inner tube 1 are coaxially sleeved, wherein a clearance fit is formed between the inner circumferential surface of the outer tube 2 and the outer circumferential surface of the inner tube 1. Specifically, the fit includes, but is not limited to, the following embodiments: Threaded fit: A matching threaded structure is provided on the inner wall of the outer tube 2 and / or the outer wall of the inner tube 1, and axial displacement is achieved by thread engagement.

[0033] Sliding fit: A dynamic fit tolerance is formed between the inner wall of the outer tube 2 and the outer wall of the inner tube 1, and axial displacement is achieved through relative sliding. Any solution that can achieve relative axial displacement of the outer tube 2 relative to the inner tube 1 while maintaining their positioning should be considered an equivalent technical solution in this embodiment.

[0034] In this embodiment, the outer tube is nested inside the inner tube and will not be exposed, achieving a visually invisible effect. The inner tube 1 and outer tube 2 are made of soft and transparent medical-grade silicone or polyurethane, ensuring that they are almost invisible after being inserted into the patient's body, resulting in a better invisibility effect. Combined with the nose clip component, they are not easy to fall off, reducing the patient's psychological burden.

[0035] Specifically, the outer tube 2 includes a third end 5 and a fourth end 6. The outer circumferential surface of the third end 5 is provided with an external thread 7, and the inner wall of the first end 3 is provided with an internal thread. The internal thread and the external thread 7 form a threaded engagement structure for rotational adjustment.

[0036] In one possible implementation, an annular bracket is provided between the fourth end 6 and the external thread 7. The annular bracket includes a support ring 8 and a plurality of support bars 9 distributed along the circumference of the outer tube 2. The support ring 8 is fixedly connected to each support bar 9.

[0037] The extension direction of the support bar 9 is parallel to the axial direction of the outer tube 2, and each support bar 9 is evenly distributed and fixedly connected along the outer circumferential surface of the outer tube 2. The annular bracket is fixedly sleeved on the outer circumferential surface of the outer tube 2 and fixedly connected to each support bar 9.

[0038] Optionally, the ring bracket and support bar 9 adopt an integrated molding structure to improve connection strength and assembly accuracy.

[0039] Optionally, the number of annular supports is five, arranged at intervals along the axial direction of the outer tube 2. The material of the annular supports and support bars 9 can be at least one of metal, engineering plastic, or composite materials.

[0040] Furthermore, the connection between the annular bracket and the support bar 9 can be an adhesive connection. The sum of the thickness of the support ring 8 and the outer diameter of the support bar 9 is less than the inner diameter of the inner tube 1. If the inner surface of the inner tube 1 has threads, the sum is less than the inner diameter of the threads. Through the above structural design, interference between the support bar 9 and the support ring 8 and the wall or thread structure of the inner tube 1 is avoided; it can be ensured that the support bar 9 and the support ring 8 can move axially along the inner tube 1 within the inner tube 1.

[0041] In one possible implementation, a first limiting ring 10 is provided on the fourth end 6, and a second limiting ring 11 is provided on the inner surface of the first end 3. The outer diameter of the first limiting ring 10 is larger than the outer diameter of the second limiting ring 11.

[0042] The outer diameter of the first limiting ring 10 is smaller than the inner diameter of the inner tube 1, so that the first limiting ring 10 and the inner tube 1 form a clearance fit. When the outer tube 2 is pulled out, the first limiting ring 10 moves axially with the outer tube 2 inside the inner tube 1.

[0043] The second limiting ring 11 is disposed in the inner tube 1, and its distance from the first end port is less than the initial distance between the first limiting ring 10 and the first end port. When the outer tube 2 is pulled out, the first limiting ring 10 moves toward the second limiting ring 11 until the two contact. Since the outer diameter of the first limiting ring 10 is larger than the inner diameter of the second limiting ring 11, the second limiting ring 11 can prevent the first limiting ring 10 from continuing to move toward the first end, thereby preventing the outer tube 2 from being completely pulled out.

[0044] Optionally, the first limiting ring 10 is fixedly connected to the outer tube 2, or the linkage is achieved through snap-fit, threaded connection, or other means. The second limiting ring 11 can be fixed to the inner wall of the inner tube 1, or integrally formed with the inner tube 1. The second limiting ring 11 is located below the internal thread of the inner tube 1.

[0045] Furthermore, the contact surfaces of the first limiting ring 10 and the second limiting ring 11 can be configured as inclined surfaces, stepped surfaces, or buffer structures to reduce impact and improve limiting stability.

[0046] As one possible implementation, a magnetic attraction assembly is also included, comprising: a fixing ring 12, a magnetic ring base 13, and a connecting tube 14. The fixing ring 12 is connected to the first end 3, and the connecting tube 14 is disposed in the inner cavity of the magnetic ring base 13, forming fluid communication with the first end 3. The fixing ring 12 is provided with a first magnetic element 18, and the magnetic ring base 13 is provided with a second magnetic element 19. The first magnetic element 18 and the second magnetic element 19 are magnetically attracted and connected.

[0047] The magnetic ring base 13 has an inner cavity, and the connecting tube 14 is disposed within the inner cavity of the magnetic ring base 13. The first magnetic element 18 and the second magnetic element 19 are permanent magnets, and their magnetic poles are arranged to attract each other. The first magnetic element 18 and the second magnetic element 19 are annular. The first magnetic element 18 is disposed at the bottom of the magnetic ring base 13, and the second magnetic element 19 is disposed on the upper surface of the fixing ring 12. Optionally, the top surface of the fixing ring 12, i.e., the surface in contact with the magnetic ring base 13, has a groove. The bottom end of the magnetic ring base 13 matches the groove. The groove facilitates the fixing of the magnetic ring base 13 and prevents the magnetic ring base 13 from being horizontal relative to the top surface of the fixing ring 12. The second magnetic element 19 is disposed within the groove.

[0048] The magnetic ring base 13 and the fixing ring 12 can be made of medical-grade polycarbonate (PC) or polyetheretherketone (PEEK) material, and can be fixed to the first magnetic component 18 or the second magnetic component 19 by medical epoxy resin adhesive.

[0049] When feeding the patient is finished, the magnetic ring base 13 can be removed for rinsing. After rinsing, it can be installed on the fixing ring 12 for more hygienic and convenient use.

[0050] The retaining ring 12 and the first end 3 can be fixed by threaded connection or snap-fit ​​connection 28. The fluid communication between the connecting pipe 14 and the first end 3 includes, but is not limited to, plug-in connection, flange connection, or hose connection. Optionally, the retaining ring 12 has a trumpet-shaped structure, with a tapered guide surface formed between the top and bottom ends. The magnetic ring base 13 has a circular annular structure. The bottom end of the magnetic ring base 13 mates with the top end of the retaining ring 12, and the bottom end of the retaining ring 12 is connected to the first end.

[0051] As one possible implementation, it also includes a protective cover 15 and a connecting rope 16. The protective cover 15 is detachably coupled to one end of the connecting tube 14, one end of the connecting rope 16 is connected to the protective cover 15, and the other end of the connecting rope 16 is connected to the magnetic ring base 13.

[0052] A sealing ring may be provided on the inner surface of the protective cover 15, forming a sealed structure when the protective cover 15 mates with the connecting tube 14. The connecting rope 16 may be made of at least one of nylon, silicone, or metal chain.

[0053] As one possible implementation, the nose clip assembly includes a U-shaped frame and a third magnetic element 20. One end of the U-shaped frame is connected to the first end 3, and the other end of the U-shaped frame is provided with the third magnetic element 20. The third magnetic element 20 and the second magnetic element 19 form a magnetic attraction engagement.

[0054] The third magnetic element 20 and the second magnetic element 19 form a magnetic attraction fit; when the first magnetic element 18 and the second magnetic element 19 form a magnetic attraction fit, the third magnetic element 20 and the magnetic attraction whole composed of the first magnetic element 18 and the second magnetic element 19 form a magnetic attraction force that attracts each other.

[0055] The U-shaped frame is made of elastic metal material, and the third magnetic component 20 is fixed to the end of the U-shaped frame by injection molding or adhesive bonding. This embodiment, through its magnetic structure design, ensures both the positioning stability of the nose clip and ease of use.

[0056] One end of the U-shaped frame is connected to the inner tube 1, and the other end can be connected to a transparent medical silicone ball, which can encapsulate a third magnetic component 20. The third magnetic component 20 is a permanent magnet. The U-shaped frame is fixed in the nasal septum inside the nostril to prevent pressure sores on the skin, effectively prevent the gastric tube from slipping out, and ensure the stability and safety of the treatment process. The fixation effect is better than that of adhesive tape fixation, which may cause the gastric tube to fall off due to decreased adhesiveness caused by the patient's sweating, and some patients may even experience adhesive tape allergies that damage the skin.

[0057] Specifically, it also includes an outer ring, which is fixedly connected to the first end 3. One end of the U-shaped frame is fixedly connected to the outer ring, which is trumpet-shaped. The inner wall of the outer ring mates with the outer wall of the fixing ring 12, thus providing stable support for the U-shaped frame. The outer ring can be fixed to the first end by adhesive or by embedding it into the first end. The outer ring can be made of stainless steel or reinforced engineering plastic. This embodiment, through the design of the outer ring structure, not only enhances the structural strength of the first end 3 but also provides a reliable installation foundation for the U-shaped frame.

[0058] In one possible implementation, the second end 4 is provided with a plurality of through holes 21, which are arranged along the axial direction of the inner tube 1. In a preferred embodiment, there are four through holes.

[0059] Specifically, the multiple through holes 21 on the second end 4 can also be randomly distributed on the outer surface of the inner tube 1. The cross-sectional shape of the through holes 21 can be circular, elliptical, or polygonal. In this embodiment, by setting the through holes 21, the fluid forms a multi-channel diversion when passing through, ensuring the uniformity of the flow distribution, effectively reducing the local impact force generated by concentrated fluid jets, and avoiding mechanical damage to the stomach wall tissue.

[0060] This utility model also discloses an invisible anti-dislodgement nasogastric tube assembly, including any of the above-mentioned invisible anti-dislodgement nasogastric tubes and a guide wire 22, wherein the guide wire 22 is detachably inserted into the inner tube 1.

[0061] Optionally, the guidewire 22 includes a flexible core made of nickel-titanium alloy or medical-grade stainless steel; the distal end of the guidewire 22 has a rounded tip design to avoid tissue damage.

[0062] This gastric tube assembly features a detachable guidewire 22, which improves the accuracy and convenience of tube placement. The guidewire 22 can be removed after placement, reducing patient discomfort, while ensuring that the gastric tube's concealed and anti-dislodgement function remains unaffected.

[0063] As one possible implementation method, such as Figure 6As shown, it also includes a snap fastener, which is sleeved on the guide wire 22 and can slide along the axial direction of the guide wire 22. The snap fastener includes a snap body 23, a spring 24, and an inner core 25. The snap body 23 has a through channel 26. One end of the inner core 25 is slidably disposed within the snap body 23. The inner core 25 has a guide wire hole 27, which coincides with the through channel 26. The spring 24 is disposed between the snap body 23 and the inner core 25. The diameter of the guide wire hole 27 is larger than the diameter of the guide wire 22. The cross-section of the through channel 26 can be circular or elliptical. The guide wire 22 can pass through the guide wire hole 27 and the through channel 26.

[0064] The guide wire 22 is sequentially inserted into the through channel 26 of the buckle body 23 and the guide wire hole 27 of the inner core 25 to form a sliding fit; one end of the inner core 25 is elastically supported inside the buckle body 23 by the spring 24, and the inner core 25 is provided with a buckle 28, and the buckle body 23 is provided with a groove that cooperates with the buckle 28. The buckle 28 restricts one end of the inner core 25 to slide inside the buckle body 23.

[0065] Locked state: The guide wire hole 27 and the through channel 26 are axially offset, and the guide wire 22 is clamped by the inner wall of the guide wire hole 27 and the inner wall of the through channel 26, thereby locking the guide wire 22.

[0066] Pressing in the free state: Pressing the inner core 25 causes the inner core 25 to displace against the elastic force of the spring 24, releasing the locking of the guide wire hole 27 and the through channel 26 on the guide wire 22. At this time, the guide wire hole 27 and the through channel 26 remain coaxial, and the guide wire 22 can slide freely along the axial direction; thus, the length of the guide wire 22 can be adjusted to prevent the guide wire 22 from being inserted too far into the inner tube 1 and causing damage to the inside of the stomach.

[0067] This embodiment achieves quick, one-handed fixing and releasing of the guide wire 22 through a press-fit buckle, while ensuring adjustment accuracy and operational reliability. The press-fit buckle in this embodiment can also be a plastic spring buckle or a single-hole spring pig-nose buckle used in the prior art for adjusting rope length.

[0068] like Figure 7 As shown in the embodiment of this utility model, a tube cutter is also disclosed, including a cutting blade 29, a punching blade 30 and a tube cutting body 31. The tube cutting body 31 is provided with a guide channel inside. The cutting blade 29 and the punching blade 30 are respectively arranged along the axial direction of the guide channel. The cutting blade 29 can cut the nasogastric tube located in the guide channel; the punching blade 30 can punch through holes in the nasogastric tube.

[0069] The tube cutter provided in this embodiment is configured to be used in conjunction with any of the above-mentioned invisible anti-dislodge nasogastric tubes to perform a preset length of tube body cutting operation and side wall opening processing on the second end of the invisible anti-dislodge nasogastric tube.

[0070] The cutting blade 29 is slidably mounted above the guide channel and configured to reciprocate linearly along the radial direction of the guide channel. The cutting blade 29 includes a first shank and a cutting blade fixedly disposed at the end of the first shank, wherein the cutting edge of the cutting blade forms an inclined angle of zero to ninety degrees with the central axis of the guide channel. Through this inclined cutting edge design, when the cutting blade 29 performs the cutting operation on the inner tube, it simultaneously processes an arc transition chamfer on the cutting end face of the inner tube, thereby realizing the integrated function of cutting and chamfering.

[0071] Preferably, the cutting edge cross-sectional shape of the cutting blade is selected from: a straight cutting edge or an elliptical cutting edge, the cutting edge profile of which simulates the gradient geometry of a syringe needle tip.

[0072] When performing the cutting operation, follow these steps: insert the inner segment of the nasogastric tube to be cut into the supporting cylindrical rigid tube, the outer diameter of which is smaller than the inner diameter of the inner tube.

[0073] Pressure is applied to the first cutter holder, causing the cutting edge of the cutting blade to contact the outer wall of the inner tube.

[0074] The rotating cylindrical rigid tube causes the inner tube to rotate circumferentially along its axis within the guide channel.

[0075] The circumferential cutting of the tube and the chamfering of the cut end face are completed simultaneously through the relative movement of the cutting blade and the rotating inner tube. The cylindrical rigid tube can be made of hard plastic.

[0076] The punching cutter 30 is slidably disposed above the guide channel and can reciprocate radially along the guide channel. The punching cutter 30 includes a second handle and a punching blade fixedly connected to the second handle, wherein two punching blades are symmetrically arranged on the second handle. By applying external force to the second handle, the punching blades can be driven to perform a punching operation on the wall of the nasogastric tube. Preferably, the cross-sectional shape of the punching blade is configured as circular or square; further, the cutting edge of the punching blade is provided with a serrated structure to enhance cutting efficiency. Optionally, the cross-section of the guide channel is circular, and the diameter of the cross-section of the guide channel is larger than the outer diameter of the inner tube. Remove the tube cutter, insert the guidewire into the inner tube from the first end, press the snap button to push one end of the guidewire 22 to the same length position as the inner tube 1 and lock it. After inserting the inner tube 1 and the guidewire 22 into the gastric fundus through the patient's nasal cavity, hang it on the patient's nasal septum through a U-shaped frame, and pull out the guidewire 22 to complete the installation.

[0077] The working principle of this invention is as follows: The second end of the inner tube is inserted into the stomach via a guidewire, and a U-shaped frame is hung on the patient's nasal septum. When medication or food needs to be administered, the outer tube is rotated and pulled out, the protective cap is opened, and medication or food is administered. After administration, the outer tube is pushed back into the inner tube and rotated to lock it in place. This invention can be designed as a disposable consumable, which can be discarded directly after use, making it safe and hygienic.

[0078] This utility model features a simple and easy-to-operate invisible anti-dislodgement nasogastric tube, reducing the workload of nursing staff, minimizing the pain caused to patients due to tube dislodgement and the need for re-insertion, and reducing patients' medical expenses.

[0079] The length of the auxiliary guidewire in the invisible anti-dislodgement nasogastric tube assembly of this utility model is adjustable. The guidewire length can be adjusted by pressing the buckle, making the operation more convenient.

[0080] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0081] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions, and alterations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A concealed, non-dislodged nasogastric tube, characterized in that, include: Inner tube, outer tube, and nose clip assembly; The inner tube includes a first end and a second end; the first end is connected to the nose clip assembly, and the second end is inserted into the stomach. The outer tube is embedded in the first end, and the outer tube can be adjusted in displacement along the axial direction of the inner tube.

2. The invisible anti-dislodgement nasogastric tube as described in claim 1, characterized in that, The outer tube includes a third end and a fourth end. The outer peripheral surface of the third end is provided with an external thread, and the inner wall of the first end is provided with an internal thread. The internal thread and the external thread form a threaded engagement structure for rotational adjustment.

3. The invisible, non-dislodged nasogastric tube as described in claim 2, characterized in that, An annular bracket is provided between the fourth end and the external thread. The annular bracket includes a support ring and a plurality of support bars distributed along the circumference of the outer tube. The support ring is fixedly connected to each of the support bars.

4. The invisible, non-dislodged nasogastric tube as described in claim 3, characterized in that, A first limiting ring is provided on the fourth end, and a second limiting ring is provided on the inner surface of the first end, wherein the outer diameter of the first limiting ring is larger than the outer diameter of the second limiting ring.

5. The invisible, non-dislodged nasogastric tube as described in claim 2, characterized in that, It also includes a magnetic attraction assembly, which includes: a fixing ring, a magnetic ring base and a connecting tube. The fixing ring is connected to the first end, and the connecting tube is disposed in the inner cavity of the magnetic ring base. The connecting tube is in fluid communication with the first end. The fixing ring is provided with a first magnetic element, and the magnetic ring base is provided with a second magnetic element. The first magnetic element and the second magnetic element are magnetically attracted and connected.

6. The invisible, non-dislodged nasogastric tube as described in claim 5, characterized in that, It also includes a protective cover and a connecting rope. The protective cover is detachably fitted to one end of the connecting tube, one end of the connecting rope is connected to the protective cover, and the other end of the connecting rope is connected to the magnetic ring base.

7. The invisible, non-dislodged nasogastric tube as described in claim 5, characterized in that, The nose clip assembly includes a U-shaped frame and a third magnetic component. One end of the U-shaped frame is connected to the first end, and the other end of the U-shaped frame is provided with the third magnetic component. The third magnetic component and the second magnetic component form a magnetic attraction engagement.

8. A concealed, anti-dislodgement nasogastric tube assembly, characterized in that, It includes a guidewire and a concealed, non-dislodged nasogastric tube as described in any one of claims 1-7, wherein the guidewire is inserted into the inner tube.

9. The invisible anti-dislodgement nasogastric tube assembly as described in claim 8, characterized in that, It also includes a snap fastener, which is sleeved on the guide wire and can slide along the axial direction of the guide wire. The snap fastener includes a snap body, a spring and an inner core. The snap body is provided with a through channel. One end of the inner core is slidably disposed in the snap body. The inner core is provided with a guide wire hole, which coincides with the through channel. The spring is disposed between the snap body and the inner core.

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