Anti-falling fixing device for nasogastric tube and using method of anti-falling fixing device

Abstract

The invention relates to the technical field of medical auxiliary instruments, in particular to a nasogastric tube anti-falling fixing device which comprises a nasal mask shell, a nose root fixing part is arranged at the head end of the nasal mask shell, a gastric tube fixing part is arranged at the tail end of the nasal mask shell, and nose back fixing parts are arranged on the two sides of the nasal mask shell. The nasal mask shell is further provided with a regulation and control mechanism used for controlling the nasal root fixing piece, the stomach tube fixing piece and the nasal back fixing piece to operate synchronously. According to the nasal mask, the nasal mask shell matched with the nasal bone in shape is arranged, and the nasal root fixing piece, the stomach tube fixing piece, the nasal back fixing piece and the regulating and controlling mechanism are arranged on the nasal mask shell, so that internal and external combined fixing and transverse and longitudinal combined multi-point-position fixing of the nose are achieved through cooperation of all the components; therefore, the anti-falling fixing effect is achieved, the operation is simple, and the cost is low. The technical problem that in the prior art, in the fixing process through an adhesive tape and a rope belt, slipping is prone to occurring, and consequently the stomach tube is displaced or even disengaged is solved.

Description

Technical Field

[0001] This invention relates to the field of medical assistive device technology, and in particular to a nasogastric tube anti-dislodgement fixation device and its usage method. Background Technology

[0002] A nasogastric tube is a flexible, hollow catheter primarily used to connect the nasal cavity and the stomach, assisting in feeding, medication administration, or drainage of stomach contents. Clinically, when patients are unable to eat independently for various reasons or need to temporarily bypass the mouth, the nasogastric tube acts as a lifeline, delivering vital nutrients and promptly removing gas and fluids accumulated in the stomach to prevent vomiting or aspiration.

[0003] Currently, most methods for preventing nasogastric tube dislodgement use medical tape for fixation. However, due to sweat, oil, and other secretions from the patient's face and nose, the tape becomes soaked with these substances, weakening or negating its fixing effect. This allows the nasogastric tube to loosen after the tape comes off. Therefore, using tape directly to the nose to fix the nasogastric tube presents a problem of unreliable fixation.

[0004] A search revealed Chinese patent CN 222983524 U, which discloses a nasogastric tube anti-dislodgement fixation device, comprising a nasal mask, a first rope strap, and a patch. The nasal mask has two through holes corresponding to the nostrils on its front sidewall. The rear end of the patch is fixedly connected to the bottom of the front sidewall of the nasal mask, and both ends of the patch are connected to a second rope strap for securing it to the head and between the mouth and nose. A third rope strap is provided on the patch for securing the nasogastric tube. This anti-dislodgement fixation device is used to fix the nasogastric tube to the patient's face during nasogastric tube insertion. The nasal mask covers the nose, and the patch is placed between the mouth and nose. The first rope strap and patch secure the nasal mask and patch to the head, while the third rope strap on the patch secures the nasogastric tube, thus establishing a fixed connection between the nasogastric tube and the patch, thereby fixing the inserted nasogastric tube to the patient's face and ensuring good stability.

[0005] The nasogastric tube anti-dislodgement fixation device in the above-mentioned prior art uses multiple ropes to fix the anti-dislodgement fixation device between the anti-dislodgement fixation device and the head to fix the nasogastric tube anti-dislodgement fixation device to the nose. This may cause the ropes to shift when the head moves on the pillow or bed, thus causing the nasogastric tube anti-dislodgement fixation device to be unstable. Summary of the Invention

[0006] The existing technology addresses the technical problem that the nasogastric tube anti-dislodgement fixator may shift during the movement of the patient's head on the pillow or bed, causing instability and potentially leading to displacement or even dislodgement of the nasogastric tube.

[0007] Technical approach: This application addresses the problems of existing technologies by designing a nasal shield shell based on the shape and structure of the nasal bone, and by incorporating nasal root fixation, gastric tube fixation, nasal dorsum fixation, and adjustment mechanism on the nasal shield shell. Through the cooperation of these components, it achieves a combination of internal and external fixation, as well as multi-point fixation combining lateral and longitudinal fixation of the nose, thus satisfying both the anti-detachment fixation effect and the ease of operation and low cost.

[0008] To achieve the above technical concept, the technical solution adopted by this invention is as follows: This application provides a nasogastric tube anti-dislodgement fixation device, including a nasal cover shell, a nasal root fixation member at the head end of the nasal cover shell, a gastric tube fixation member at the tail end, and nasal dorsum fixation members on both sides of the nasal cover shell; the nasal cover shell is also provided with a control mechanism for controlling the synchronous operation of the nasal root fixation member, the gastric tube fixation member, and the nasal dorsum fixation member.

[0009] Further, the control mechanism includes: a water bladder disposed at the bottom of the nasal mask shell, and an elastic frame disposed inside the nasal mask shell; it also includes an adjustment control that runs through and connects the nasal mask shell and the water bladder, the adjustment control being connected to the elastic frame.

[0010] Specifically, the elastic frame is a metal wire frame, and the metal wire frame has a cross-shaped structure.

[0011] Furthermore, the control device includes: a threaded cylinder connected to the nasal mask shell and the water bag, and a control screw threaded into the threaded cylinder; the threaded cylinder has through holes on both longitudinal sides, and a metal wire frame passes through the through holes and is connected to the control screw.

[0012] It should be noted that the threaded cylinder has internal threads. The control screw has an "I"-shaped structure, with an external thread in the middle that mates with the internal threads of the threaded cylinder.

[0013] In detail, the nasal mask shell has an "arc-shaped" structure, and both the head and tail ends of the nasal mask shell are provided with piston chambers, and a conduit is provided between the piston chambers and the water bladder.

[0014] Further, the nasal root fixing component includes: a piston rod slidably disposed in a piston cavity at the head end of the nasal mask shell, a first spring sleeved on the piston rod, one end of the first spring being connected to the piston rod and the other end being connected to the nasal mask shell; and a nasal root clip disposed at the head end of the piston rod.

[0015] More specifically, the nasal root clip has a "V"-shaped concave structure. The nasal root clip fits into the nasal root.

[0016] Furthermore, the gastric tube fixing component includes: a piston plate slidably disposed in a piston cavity at the tail end of the nasal mask shell, a second spring connected to the piston plate, the end of the second spring being connected to the nasal mask shell; and an air duct communicating with the piston cavity at the tail end of the nasal mask shell, the end of the air duct being connected to an air bag.

[0017] Further, the nasal bridge fixation component includes: a fixing block connected to the nasal mask shell and the water bag, the fixing block having a hydrogel chamber, a pressure valve being provided between the water bag and the fixing block, and the water bag and the hydrogel chamber being connected through the pressure valve.

[0018] It should be noted that hydrogels swell when they come into contact with water.

[0019] Furthermore, this application provides a method for using a nasogastric tube anti-dislodgement fixation device, comprising the following steps: The nasal mask shell is fitted to the patient's nose, and the gastric tube fixation device is placed in the nostril of the inserted gastric tube. The manual screw-on adjustment mechanism drives the nasal root fixation piece towards the nasal root for fixation. The control mechanism causes the nasal bridge fixation device to expand and bend to fix the nasal bridge; The control mechanism causes the gastric tube fixation device to expand, thus securing the nostrils to the gastric tube.

[0020] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention achieves initial fixation of the nose by using a nasal mask shell that matches the nasal bone structure. Furthermore, through the nasal root fixation component, gastric tube fixation component, nasal bridge fixation component, and adjustment mechanism set on the nasal mask shell, a multi-point fixation effect is achieved by combining internal and external fixation as well as lateral and longitudinal fixation of the nose. This makes the fixation more stable and effectively avoids the technical problem of weakened tape fixation due to sweating and oiling of the nose.

[0021] 2. This invention uses an upward-screwed control screw to compress the water bladder at its bottom, causing water to enter the hydrogel chamber and piston chamber of the fixing block through a pressure valve and conduit. The hydrogel expands upon contact with water, causing the fixing block to expand and fit tightly against the patient's nasal bone. Furthermore, the control screw causes the metal wire frame to bend, pushing the water bladder, fixing block, and nasal mask shell to fit more closely against the patient's nose during the bending process. This achieves a combined lateral and longitudinal fixation effect, making the fixation more stable.

[0022] 3. In this invention, water in the water bladder enters the piston cavity at the head end of the nasal mask through a conduit, thereby pushing the piston rod to move, so that the nasal root clip at the head end of the piston rod clamps onto both sides of the patient's nasal root, achieving the technical effect of nasal root point positioning and fixation.

[0023] 4. In this invention, water in the water bladder enters the piston chamber at the tail end of the nasal mask shell through a conduit, thereby pushing the piston plate to move. This causes the gas between the piston plate and the piston chamber to enter the air bladder through the air inlet tube, causing the air bladder to inflate. This allows the outside of the air bladder to fit against the patient's nostrils, and the inside of the air bladder to fit against the gastric tube, thus achieving the limitation and fixation of the gastric tube. Through the combination of internal and external fixation, the problem of gastric tube displacement and dislodgement can be effectively avoided. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a perspective view of the overall structure of the present invention; Figure 2 For the present invention Figure 1 A three-dimensional view viewed from below; Figure 3 For the present invention Figure 1 The left view; Figure 4 For the present invention Figure 3 Sectional view along the AA direction; Figure 5 This is a three-dimensional view of part of the structure of the present invention; Figure 6 This diagram shows the connection relationship between the control mechanism and the nasal bridge fixation component of the present invention. Figure 7 For the present invention Figure 6 Top view; Figure 8 For the present invention Figure 6 A bottom view; Figure 9 For the present invention Figure 8 Sectional view along the BB direction; Figure 10 This is a diagram showing the connection relationship between the water bladder and the fixing block in this invention; Figure 11 This is a three-dimensional view of the control screw structure of the present invention; Figure 12 A three-dimensional structural diagram of the nasal root fixation device; Figure 13 A three-dimensional view of part of the gastric tube fixation component; Figure 14 This is a perspective view of the overall structure of the present invention; In the diagram: 1. Nasal mask shell; 11. Piston chamber; 12. Tube; 2. Nasal root fixation piece; 21. Piston rod; 22. First spring; 23. Nasal root clip; 3. Gastric tube fixation piece; 31. Piston plate; 32. Second spring; 33. Airway; 34. Airbag; 4. Nasal bridge fixation piece; 41. Fixing block; 42. Pressure valve; 5. Control mechanism; 51. Water bag; 52. Adjustment device; 521. Threaded cylinder; 522. Control screw; 53. Wire frame. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solutions of the present invention, the technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0027] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "front end", "rear end", "inner side", "outer side", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0028] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" 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 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 application based on the specific circumstances.

[0029] The inventors discovered in clinical nursing that after a nasogastric tube is inserted, it is fixed with tape. However, due to the sweat, oil, and other secretions from the patient's face and nose, the tape becomes soaked with sweat and oil, which weakens or fails to fix the tube. As a result, the tape falls off, causing the nasogastric tube to shift or even come off, causing great inconvenience to both the patient and the medical staff.

[0030] Based on the above findings, this application provides a nasogastric tube anti-dislodgement fixation device, including a nasal cover 1, a nasal root fixation member 2 at the head end of the nasal cover 1, a gastric tube fixation member 3 at the tail end, and nasal bridge fixation members 4 on both sides of the nasal cover 1; the nasal cover 1 is also provided with a control mechanism 5 for controlling the synchronous operation of the nasal root fixation member 2, the gastric tube fixation member 3 and the nasal bridge fixation member 4.

[0031] Example 1 Reference Figure 1-14As shown, this application provides a nasogastric tube anti-dislodgement fixation device, including a nasal cover 1, a nasal root fixation member 2 provided at the head end of the nasal cover 1, and nasal bridge fixation members 4 provided on both sides of the nasal cover 1; the nasal cover 1 is also provided with a control mechanism 5 for controlling the synchronous operation of the nasal root fixation member 2 and the nasal bridge fixation member 4.

[0032] Further, the control mechanism 5 includes: a water bladder 51 disposed at the bottom of the nasal mask shell 1, and an elastic frame disposed inside the nasal mask shell 1; it also includes an adjustment control 52 that passes through and connects the nasal mask shell 1 and the water bladder 51, the adjustment control 52 being connected to the elastic frame.

[0033] It should be noted that the water bladder 51 is filled with water.

[0034] As an example, the elastic frame is a wire frame 53, which has a certain supporting force and elasticity and can deform under the action of external force.

[0035] Furthermore, the control unit 52 includes: a threaded cylinder 521 connected to the nasal mask shell 1 and the water bag 51, and a control screw 522 threaded into the threaded cylinder 521; the threaded cylinder 521 has through holes on both longitudinal sides, and the metal wire frame 53 passes through the through holes and is connected to the control screw 522.

[0036] Manually turning the control screw 522 upwards will cause the wire frame 53 to bend downwards under the constraint of the nasal mask shell 1, thereby applying downward pressure to the nasal mask shell 1 and the airbag 51, making the nasal mask shell 1 and the airbag 51 fit the patient's nose more closely.

[0037] Preferably, the nasal mask shell 1 has an "arc-shaped" structure, and both the head end and the tail end of the nasal mask shell 1 are provided with piston chambers 11, and a conduit 12 is provided between the piston chambers 11 and the water bladder 51.

[0038] Further, the nasal root fixing component 2 includes: a piston rod 21 slidably disposed in a piston cavity 11 at the head end of the nasal mask shell 1, a first spring 22 sleeved on the piston rod 21, one end of the first spring 22 being connected to the piston rod 21 and the other end being connected to the nasal mask shell 1; and a nasal root clip 23 disposed at the head end of the piston rod 21.

[0039] During the upward rotation of the control screw 522, the water in the water bag 51 enters the piston chamber 11 at the head end of the nasal mask shell 1 through the conduit 12, thereby pushing the piston rod 21 to move towards the root of the nose. At this time, the first spring 22 is compressed, and the piston rod 21 drives the nasal root clip 23 to clamp and fix the patient's nasal root on both sides.

[0040] As an example, the nasal root clip 23 has a "V"-shaped concave structure.

[0041] Furthermore, the technical solution includes a fixing block 41 connected to the nasal mask shell 1 and the water bag 51. The fixing block 41 has a hydrogel chamber. A pressure valve 42 is provided between the water bag 51 and the fixing block 41. The water bag 51 and the hydrogel chamber are connected through the pressure valve 42.

[0042] During the upward rotation of the control screw 522, the water in the water bladder 51 enters the hydrogel chamber through the pressure valve 42 and fuses with the hydrogel in the hydrogel chamber, causing the hydrogel to expand. The expanded hydrogel compresses the fixing block 41 to fit tightly against the patient's nasal bone, thereby achieving fixation and limiting at the nasal bone.

[0043] Example 2 Based on Example 1, referring to Figure 1-4 as well as Figure 14 As shown, in order to further fix the gastric tube and make the gastric tube more stable, an internal fixation method is added on the basis of the external fixation in Embodiment 1. The gastric tube is more stable and prevented from falling off by combining the internal and external fixation methods. Therefore, a gastric tube fixing member 3 is provided at the tail end of the nasal mask shell 1.

[0044] Further, the gastric tube fixation component 3 includes: a piston plate 31 slidably disposed in the piston cavity 11 at the tail end of the nasal mask shell 1, a second spring 32 connected to the piston plate 31, the end of the second spring 32 being connected to the nasal mask shell 1; and an air duct 33 communicating with the piston cavity 11 at the tail end of the nasal mask shell 1, the end of the air duct 33 being connected to an airbag 34.

[0045] During the upward rotation of the control screw 522, water in the water bag 51 enters the piston chamber 11 at the tail end of the nasal mask shell 1 through the conduit 12, thereby pushing the piston plate 31 to move. At this time, the second spring 32 is compressed, causing the gas between the piston plate 31 and the piston chamber 11 to enter the air bag 34 through the air guide tube 33. The air bag 34 inflates, so that the outside of the air bag 34 fits against the patient's nostrils, and the inside of the air bag 34 fits against the gastric tube, thereby limiting and fixing the gastric tube and effectively preventing the gastric tube from shifting or even dislodging.

[0046] Specific application examples The following describes the specific application process of a nasogastric tube anti-dislodgement fixation device in nasogastric tube insertion surgery, with reference to Embodiment 1 and Embodiment 2.

[0047] Nasogastric tube insertion is a clinical procedure in which a catheter is inserted into the stomach through the nasal cavity. It is mainly used for gastrointestinal decompression, nasogastric feeding, or drug administration. The procedure includes assessing indications and contraindications, measuring the insertion length, lubricating the tube, confirming its position, and securing it properly. Strict aseptic technique must be maintained throughout the procedure, and the patient's response must be monitored at all times.

[0048] During nasogastric tube placement: Mark the insertion depth of the nasogastric tube from the tip of the nose to the earlobe, and then down to the xiphoid process of the sternum (approximately 45-55cm for adults).

[0049] To check nasal patency, choose the wider nostril and clean it with a cotton swab dipped in warm water.

[0050] Apply sterile liquid paraffin to the tip of the nasogastric tube 10-15cm and slowly insert it along the bottom of the nasal cavity. When it reaches the pharynx (about 15cm), instruct the patient to swallow and continue inserting it to the marked length.

[0051] If the patient experiences severe coughing, difficulty breathing, or the catheter disc enters the mouth, it indicates accidental airway entry, and the tube should be extubated immediately and the procedure repeated.

[0052] Aspirate gastric fluid with a syringe, or inject 5-10 mL of air into the stomach, and listen for gurgling sounds in the left upper abdomen with a stethoscope.

[0053] If the location cannot be determined or long-term placement is required, an X-ray examination should be used to confirm that the catheter tip is located in the stomach.

[0054] After the tube is inserted, the gastric tube is fixed by a nasogastric tube anti-dislodgement fixing device according to this application. In the specific operation process: the nasal mask shell 1 is attached to the patient's nose, the gastric tube is inserted through the air bag 34 and the air bag 34 is placed in the nostril of the inserted gastric tube.

[0055] Manually turning the control screw 522 upwards will cause the wire frame 53 to bend downwards under the constraint of the nasal mask shell 1, thereby applying downward pressure to the nasal mask shell 1 and the airbag 51, making the nasal mask shell 1 and the airbag 51 fit more closely to the patient's nose, thus achieving a combination of lateral and longitudinal positioning and fixation.

[0056] During the upward rotation of the control screw 522, the water in the water bag 51 enters the piston chamber 11 at the head end of the nasal mask shell 1 through the conduit 12, thereby pushing the piston rod 21 to move towards the root of the nose. At this time, the first spring 22 is compressed, and the piston rod 21 drives the nasal root clip 23 to clamp and fix the patient's nasal root on both sides.

[0057] During the upward rotation of the control screw 522, the water in the water bladder 51 enters the hydrogel chamber through the pressure valve 42 and fuses with the hydrogel in the hydrogel chamber, causing the hydrogel to expand. The expansion of the hydrogel and the double compression of the metal wire frame 53 to fix the fixing block 41 tightly against the patient's nasal bone, thereby achieving fixation and limitation at the nasal bone.

[0058] During the upward rotation of the control screw 522, water in the water bag 51 enters the piston chamber 11 at the tail end of the nasal mask shell 1 through the conduit 12, thereby pushing the piston plate 31 to move. At this time, the second spring 32 is compressed, causing the gas between the piston plate 31 and the piston chamber 11 to enter the air bag 34 through the air guide tube 33. The air bag 34 inflates, so that the outside of the air bag 34 fits against the patient's nostrils, and the inside of the air bag 34 fits against the gastric tube, thereby limiting and fixing the gastric tube and effectively preventing the gastric tube from shifting or even dislodging.

[0059] After the gastric tube is secured, connect a negative pressure suction device (gastric decompression) or a nutrition delivery system (nasogastric feeding) as needed.

[0060] Record the catheter insertion time, catheter depth, patient response, and characteristics of the aspirate.

[0061] It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this invention, and these should also be considered within the scope of protection of this invention. These modifications and improvements will not affect the effectiveness of the invention or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A device for preventing the disengagement of a nasogastric tube, comprising a nasal mask housing (1), characterized in that: The nose mask shell (1) is provided with a nose root fixing part (2) at the head end, a stomach tube fixing part (3) at the tail end, and a nose back fixing part (4) on both sides of the nose mask shell (1). The nose mask shell (1) is further provided with a control mechanism (5) for controlling the synchronous operation of the nose root fixing part (2), the stomach tube fixing part (3) and the nose back fixing part (4).

2. The anti-extraction fixing device for a nasogastric tube according to claim 1, characterized in that, The control mechanism (5) comprises: a water bag (51) arranged at the bottom of the nose mask shell (1), and an elastic frame arranged inside the nose mask shell (1); Further comprising a control knob (52) connected through the nose mask shell (1) and the water bag (51), the control knob (52) is connected with the elastic frame.

3. The anti-extraction fixing device for a nasogastric tube according to claim 2, characterized in that, The elastic frame is a metal wire frame (53).

4. The anti-extraction fixing device for a nasogastric tube according to claim 3, characterized in that, The control knob (52) comprises: a threaded cylinder (521) connected to the nose mask shell (1) and the water bag (51), and a control screw (522) screwed into the threaded cylinder (521); The threaded cylinder (521) is provided with a through hole on both longitudinal sides, and the metal wire frame (53) is connected with the control screw (522) through the through hole.

5. The anti-extraction fixing device for a nasogastric tube according to claim 4, characterized in that: The nose mask shell (1) is in the shape of "arc-shaped dry word", and the head end and the tail end of the nose mask shell (1) are provided with a piston cavity (11), and a conduit (12) is arranged between the piston cavity (11) and the water bag (51) for communication.

6. The anti-extraction fixing device for a nasogastric tube according to claim 5, characterized in that, The nose root fixing part (2) comprises: a piston rod (21) slidingly arranged in the piston cavity (11) at the head end of the nose mask shell (1), a first spring (22) is sleeved on the piston rod (21), one end of the first spring (22) is connected with the piston rod (21), and the other end is connected with the nose mask shell (1); And the head end of the piston rod (21) is provided with a nose root clamp (23).

7. The anti-extraction fixing device for a nasogastric tube according to claim 6, characterized in that, The stomach tube fixing part (3) comprises: a piston sheet (31) slidingly arranged in the piston cavity (11) at the tail end of the nose mask shell (1), a second spring (32) is connected to the piston sheet (31), and the end of the second spring (32) is connected with the nose mask shell (1); And a gas guide pipe (33) in communication with the piston cavity (11) at the tail end of the nose mask shell (1), the end of the gas guide pipe (33) is connected with an air bag (34).

8. The anti-extraction fixing device for a nasogastric tube according to claim 7, characterized in that, The nose back fixing part (4) comprises: a fixed block (41) connected with the nose mask shell (1) and the water bag (51), a hydrogel chamber is formed in the fixed block (41), a pressure valve (42) is arranged between the water bag (51) and the fixed block (41), and the water bag (51) and the hydrogel chamber are communicated through the pressure valve (42).

9. The anti-extraction fixing device for a nasogastric tube according to claim 6, characterized in that, The nose root clamp (23) is in the shape of "V" recessed structure.

10. The method for using the gastric tube anti-extraction fixing device according to any one of claims 1-9, characterized in that, The steps comprise: attach the nose mask shell (1) to the nose of the patient, and place the stomach tube fixing part (3) in the nostril of the inserted stomach tube; manually screw the control mechanism (5), drive the nose root fixing part (2) to advance to the nose root direction for fixation through the control mechanism (5); the control mechanism (5) drives the nose back fixing part (4) to expand and bend for nose back fixation; the control mechanism (5) drives the stomach tube fixing part (3) to expand for fixation of the nostril and the stomach tube.

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