Nasointestinal tube convenient to fix and take out

Abstract

The invention discloses a nasointestinal tube convenient to fix and take out. The nasointestinal tube comprises a catheter, a rubber ring, an annular line, an annular air bag and an inflation valve. The front end of the catheter is sealed, the rear end of the catheter is connected with the connector, and the front end of the side wall is provided with a through hole and an annular groove in which an annular air bag is fixed. And the rubber ring is sleeved outside the conduit and is buckled with the annular line. Through the synergistic effect of the annular air bag, the rubber ring and the annular line, stable fixing and convenient taking-out of the nasointestinal tube in the body are achieved, dependence on traditional adhesive tape fixing is reduced, catheter displacement caused by adhesive tape loosening is avoided, and the nasointestinal tube is suitable for patients needing long-term enteral nutrition support.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a nasointestinal tube that can be easily fixed and removed. Background Art

[0002] A nasoenteric tube is a widely used medical device in clinical practice, primarily for enteral nutrition support, drug delivery, or gastrointestinal decompression. It is inserted through the nasal cavity, passes through the esophagus and stomach, and ultimately reaches the duodenum or jejunum. It is suitable for patients who cannot eat orally or have gastric emptying disorders, such as critically ill patients, those recovering from surgery, and those with neurological dysphagia.

[0003] Currently, the fixation of nasogastric tubes mainly relies on external fixation devices, such as adhesive tape, fixing clips or nasal patches. Although these methods are simple and easy to use, they are less stable and can easily cause the adhesive tape to loosen due to patient activity, sweating or skin oil secretion, which can cause the tube to shift or even fall off. Once the nasogastric tube shifts into the stomach, it may cause reflux or aspiration of nutrient solution, increasing the risk of lung infection. In addition, long-term fixation with adhesive tape may also cause skin pressure sores or allergic reactions, affecting patient comfort. Summary of the Invention

[0004] The present invention aims to provide a nasointestinal tube that can be easily fixed and removed, so as to solve the problem that the existing nasointestinal tube is easily displaced in the body.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a nasointestinal tube that can be easily fixed and removed, comprising a catheter, a rubber band and an annular wire, the front end of the catheter being sealed and the rear end being connected to a joint, a plurality of through holes being evenly opened on the front end of the catheter side wall, an annular groove being opened on the front end of the catheter side wall, an annular airbag being fixedly connected in the annular groove, the annular airbag being connected to an air valve through a trachea, the rubber band and the annular wire being interlocked with each other, and the rubber band being sleeved on the outside of the catheter near the rear end of the annular airbag.

[0006] Preferably, the air valve can be connected to a syringe, and the syringe is used to inflate or deflate the annular airbag.

[0007] Preferably, the joint side wall is fixedly connected to a fixing belt, and the fixing belt is fixedly connected to the joint cover.

[0008] Preferably, the annular airbag is made of medical silicone, which has good biocompatibility and elasticity, can fit closely to the intestinal wall after inflation, and can quickly return to its original shape after deflation, thereby reducing irritation to the intestinal wall.

[0009] Preferably, the annular wire is a medical nylon wire, and the elastic ring is made of medical rubber. The medical rubber has good elasticity, can be deformed when subjected to external force, and can return to its original shape after the force disappears.

[0010] The principle and beneficial effects of this technical solution:

[0011] By arranging an annular airbag, rubber band, annular wire and other structures on the nasointestinal tube, the nasointestinal tube can be stably fixed in the body and easily removed. The annular airbag is located in the annular groove at the front end of the catheter and is connected to the trachea through an air valve. Gas can be injected to expand it. The rubber band is placed outside the catheter near the rear end of the annular airbag and is interlocked with the annular wire. The annular wire can be fixed to the intestinal wall by a titanium clip. The nasointestinal tube has little effect if it moves forward a little in the body, and it can be prevented from retreating backward from the site of action. After the annular airbag is inflated, the rubber band cannot cross the annular airbag, which can effectively prevent the nasointestinal tube from shifting. After the annular airbag is deflated, the nasointestinal tube can be evacuated without the obstruction of the annular airbag, which can ensure that the rubber band and the nasointestinal tube can be smoothly detached under the action of the titanium clip. The choice of materials for the titanium clip, rubber band and annular wire can ensure that they are discharged from the body with excretion after a certain period of time and are harmless to the human body.

[0012] This design secures the tube at the source of action, effectively resolving the problem of easy displacement of existing nasointestinal tubes within the body. It reduces reliance on traditional adhesive tape fixation, avoids problems such as loosening of the tape, skin allergies, or pressure sores, improves patient comfort, and reduces the risk of nutrient solution reflux, aspiration, and lung infection caused by displacement. The insertion and removal of the nasointestinal tube are more convenient, the annular airbag is easily inflated and deflated, and the natural expulsion of the annular wire and rubber band after the titanium clip is removed also reduces patient pain. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A schematic diagram of the structure of a nasointestinal tube that is conveniently fixed and removed, provided in Example 1 of the present invention;

[0014] Figure 2 A schematic structural diagram of a nasointestinal tube tip that is conveniently fixed and removed, provided in Example 1 of the present invention;

[0015] In the figure: 1. catheter; 2. rubber ring; 3. annular wire; 4. connector; 5. through hole; 6. annular groove; 7. annular airbag; 8. trachea; 9. air valve; 10. fixing belt; 11. connector cover. DETAILED DESCRIPTION

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments:

[0017] Example 1:

[0018] like Figure 1-Figure 2 The nasointestinal tube shown is convenient for fixing and removing, and includes a catheter 1, a rubber band 2, a ring line 3, a connector 4, a through hole 5, a ring groove 6, a ring air bag 7, an trachea 8, an air valve 9, a fixing belt 10 and a connector cover 11.

[0019] Catheter 1: The front end is sealed to effectively prevent tissue damage during insertion; the rear end is connected to a standard medical connector 4, which facilitates connection to an infusion device. Several through-holes 5 are evenly distributed along the front end of the side wall for delivering nutrient solutions or medications. Catheter 1 is made of medical-grade polymer materials, offering excellent flexibility and biocompatibility. The catheter body of this embodiment can be equipped with an auxiliary chamber based on specific needs, similar to the design of conventional nasoenteric tubes.

[0020] Annular balloon 7 is fixed within annular groove 6 at the front end of catheter 1. Made of medical silicone with excellent biocompatibility and elasticity, it adheres tightly to the intestinal wall when inflated and quickly returns to its original shape when deflated, preventing sustained pressure on intestinal tissue. It is connected to valve 9 via trachea 8. Valve 9 utilizes a standard Luer connector 4 and can be connected to a syringe for inflation and deflation.

[0021] The thin elastic band 2 is placed over the catheter 1 near the rear end of the annular balloon 7. Made of medical rubber, it exhibits excellent elasticity and durability. It is thin enough and resilient enough to prevent contact with the patient's organs and displacement during insertion. The elastic band 2 is interlocked with the annular thread 3, which is made of medical nylon thread for easy fixation during surgery.

[0022] Fixing belt 10 and joint cover 11: The side wall of the joint 4 is fixedly connected with a fixing belt 10 for external fixation, and the joint cover 11 is used to protect the joint 4.

[0023] Example 2:

[0024] A fixing groove is opened at the position of the rubber ring 2 of the catheter 1. The rubber ring 2 is placed in the fixing groove. During the insertion of the nasoenteric tube, it can prevent the organs from contacting it to a certain extent, reduce the elasticity of the rubber ring 2 to a certain extent, and avoid slight deformation of the nasoenteric tube caused by the elasticity of the rubber ring 2.

[0025] The specific implementation process is as follows:

[0026] During the actual procedure, medical staff must first assess the patient's condition and determine the appropriate intubation length. With the patient in a semi-sitting or semi-recumbent position, the distance from the xiphoid process of the sternum to the tip of the nose and earlobe is measured, and an additional 10-15 cm is added as the intubation length mark. Before intubation, thorough lubrication is required. Approximately 20 ml of saline is injected into the lumen to activate the lubricant on the guide wire. A small amount of saline is also applied to the tip of the catheter 1. During insertion, when the catheter 1 reaches the throat, the patient is instructed to swallow to facilitate smooth passage of the catheter 1 into the esophagus. Once the catheter 1 reaches the gastric cavity, a gastroscope is inserted. A foreign body clamp is used to grasp the nasoenteric tube and advance it below the descending duodenum. A titanium clip is passed through the circular wire 3 and secured to the intestinal wall. This step requires particular attention to the clamp's securement, ensuring a firm grip while avoiding damage to the intestinal wall. 10 ml of air or saline is then injected into the balloon to prevent the elastic band 2 from falling off. The guide wire is carefully withdrawn and temporarily secured with tape 30 cm outside the nasal cavity.

[0027] When the nasointestinal tube needs to be removed, the operation process is also simple and safe. First, use a syringe to completely extract the gas in the annular balloon 7 to restore the balloon to a contracted state. Then gently and slowly pull out the catheter 1, the rubber band 2 slides off the nasointestinal tube, and the nasointestinal tube is easily pulled out. It is worth mentioning that the rubber band 2 and the annular wire 3 will remain in the body temporarily, but as the titanium clip falls off naturally, these components will be discharged through the intestines with feces without the need for additional intervention. This design greatly reduces the secondary harm to the patient caused by the removal operation and also reduces the workload of medical staff.

[0028] Compared with traditional nasointestinal tubes, the technical advantages of the present invention are mainly reflected in the following aspects: First, it fundamentally solves the problem of nasointestinal tube displacement. The annular airbag 7 provides radial fixing force, and the annular wire 3 and titanium clip provide axial fixing force. The two work together to ensure the stable position of the catheter 1. The device reduces the dependence on external adhesive tape fixation, avoids the displacement of the catheter 1 due to loosening of the adhesive tape, and reduces the incidence of skin allergies and pressure sores. The humanized design of the entire system significantly improves the patient's comfort. The moderate expansion of the annular airbag 7 will not cause obvious discomfort, and the material selection of each component also fully considers the safety of long-term use.

[0029] In clinical applications, this nasointestinal tube is particularly suitable for patients requiring long-term enteral nutrition support, such as critically ill patients, those recovering from surgery, and those with neurological dysphagia. Its stable fixation effectively prevents reflux and aspiration of nutrient solution, reducing the risk of lung infection. Furthermore, its simple operation process makes it a significant advantage in busy medical environments such as emergency departments and ICUs.

[0030] The above are only embodiments of the present application, and common technical solutions or characteristics in the scheme are not described in detail. For those skilled in the art, without departing from the technical solutions of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application, and these will not affect the effect and practicality of the present application. The protection scope claimed in the present application should be subject to the content of its claims, and the specific implementation mode and the like recorded in the specification can be used to explain the content of the claims.

Claims

1. A nasointestinal tube that is convenient to fix and remove, characterized by: The invention comprises a catheter, a rubber ring and an annular wire. The front end of the catheter is sealed and the rear end is connected to a joint. The front end of the side wall of the catheter is evenly provided with a plurality of through holes. The front end of the side wall of the catheter is provided with an annular groove. An annular airbag is fixedly connected in the annular groove. The annular airbag is connected to an air valve through an trachea. The rubber ring and the annular wire are buckled with each other. The rubber ring is sleeved on the outside of the catheter near the rear end of the annular airbag.

2. A nasointestinal tube that can be easily fixed and removed according to claim 1, characterized in that: The air valve can be connected to a syringe, and the syringe is used to inflate or deflate the annular airbag.

3. The nasointestinal tube that can be easily fixed and removed according to claim 1, characterized in that: The joint side wall is fixedly connected with a fixing belt, and the fixing belt is fixedly connected with a joint cover.

4. The nasointestinal tube that can be easily fixed and removed according to claim 1, characterized in that: The material of the annular airbag is medical silicone, which has good biocompatibility and elasticity, can fit closely to the intestinal wall after inflation, and can quickly return to its original shape after deflation, reducing irritation to the intestinal wall.

5. The nasointestinal tube that can be easily fixed and removed according to claim 1, characterized in that: The annular wire is a medical nylon wire, and the elastic ring is made of medical rubber. The medical rubber has good elasticity, can be deformed when subjected to external force, and can return to its original shape after the force disappears.

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