Nasogastric tube with double-layer injection function

Abstract

The utility model discloses a nasal -gastric tube with double -layer injection function, it includes, nasal -gastric tube body, it includes nasal -gastric tube connector and nasal -gastric tube catheter, and the distal end of nasal -gastric tube catheter is provided with liquid outlet hole, injection connector is connected to the inside of nasal -gastric tube connector in one end, and the other end is provided with injection hole, and the outer wall on injection connector is fixed with closed rubber plug, spiral dosing device, it includes dosing syringe and core rod, and the one end of injection pipe has the injection pipe that can insert injection hole, and the other end has push -out mouth, and the inner thread and outer thread of cooperation are set up on the inner periphery of dosing syringe and the outer periphery of core rod, this nasal -gastric tube is equipped with spiral dosing device constitution, and it is convenient to inject slowly medicine liquid in time in operation, and the liquid outlet hole is the straight opening of setting up in the distal end of nasal -gastric tube catheter, adopts straight opening to compare traditional side opening, and the opening is bigger, and the injection medicine liquid pressure is reduced, and the injection medicine liquid efficiency is increased, can accurate injection medicine liquid in the required methylene blue test detection position.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a nasogastric tube with double-layer injection function. Background Technology

[0002] Methylene blue test, with its unique staining and tracing capabilities, has become an effective means of detecting anastomotic leakage in patients during and after surgery. Compared with traditional methods, the staining effect of methylene blue test is clearer and more visible, and it can effectively detect the presence of anastomotic leakage in patients. Currently, the conventional nasogastric tube connector is mainly used to provide nutritional support for patients. There is no nasogastric tube specifically used for intraoperative drug injection. At the same time, the syringes used cannot accurately achieve the function of slow injection, and there is a possibility that the injection volume is too large during the injection process, causing the drug to enter other parts. Therefore, providing a nasogastric tube that is more suitable for the slow injection of methylene blue into the patient during the surgical procedure has become an urgent problem to be solved. Utility Model Content

[0003] The technical problem to be solved by this invention is to address the shortcomings of the existing technology by providing a nasogastric tube with double-layer injection function that can inject medication and effectively detect anastomotic leakage in patients.

[0004] The technical problem to be solved by this utility model is achieved through the following technical solution: a nasogastric tube with double-layer injection function, comprising; The nasogastric tube body consists of a nasogastric tube connector and a nasogastric tube catheter that are fixedly connected as one unit, and the distal end of the nasogastric tube catheter has an outlet hole. The injection connector has one end connected to the nasogastric tube connector and the other end has an injection hole. A sealing rubber plug that can seal the injection hole is fixed on the outer wall of the injection connector. The spiral drug delivery device includes a drug delivery syringe and a core rod. One end of the injection syringe has an injection tube that can be inserted into an injection hole, and the other end has a push port that allows the end of the core rod to be inserted. The inner circumferential surface of the drug delivery syringe and the outer circumferential surface of the core rod are provided with mating internal threads and external threads.

[0005] The technical problem to be solved by this utility model can also be achieved through the following technical solution: the above-mentioned nasogastric tube with double-layer injection function, wherein the liquid outlet is a straight opening directly facing the distal end of the nasogastric tube.

[0006] The technical problem to be solved by this utility model can also be achieved through the following technical solution: the nasogastric tube with double-layer injection function described above has length graduation lines on the outer peripheral surface of the nasogastric tube.

[0007] The technical problem to be solved by this utility model can also be achieved through the following technical solution: the nasogastric tube with double-layer injection function described above has a capacity scale line on the outer peripheral surface of the drug delivery syringe of the spiral drug delivery device.

[0008] Compared with the prior art, the beneficial technical effects of this utility model are: (1) The nasogastric tube is equipped with a spiral drug delivery device, which facilitates slow injection of the drug solution at any time during the operation. The outlet is a straight opening at the distal end of the nasogastric tube. Compared with the traditional side opening, the straight opening is larger, which reduces the injection pressure and increases the injection efficiency. The drug solution can be accurately injected at the required methylene blue test position. (2) The sealing rubber stopper can selectively seal the injection hole on the nasogastric tube connector according to the usage requirements, which effectively reduces the backflow of the drug due to gas pressure after injection; in addition, the inner wall of the special spiral syringe is provided with spiral pattern, and the syringe rod can be slowly rotated when injecting the drug to achieve the effect of slow injection. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the main structure of the nasogastric tube body and the injection connector of this utility model; Figure 2 This is a schematic diagram of the main structure of the spiral drug delivery device of this utility model; Figure 3 for Figure 2 A partially enlarged structural diagram.

[0010] Reference numerals: 1. Nasogastric tube connector; 2. Nasogastric tube catheter; 3. Discharge hole; 4. Length scale line; 5. Injection connector; 6. Injection hole; 7. Sealing rubber stopper; 8. Medication syringe; 9. Core rod; 10. Injection tube; 11. Push port; 12. Internal and external threads; 13. Volume scale line. Detailed Implementation

[0011] The specific technical solutions of this utility model are further described below with reference to the accompanying drawings, so as to enable those skilled in the art to further understand this utility model, without constituting a limitation on its rights.

[0012] Example 1, referring to Figure 1-3 A nasogastric tube with dual-layer injection function, comprising: The nasogastric tube body comprises a nasogastric tube connector 1 and a nasogastric tube catheter 2, which are fixedly connected as one unit. The distal end of the nasogastric tube catheter 2 is provided with a liquid outlet 3. The liquid outlet 3 is a straight opening facing the distal end of the nasogastric tube catheter 2. Compared with the traditional side opening, the straight opening is larger, which reduces the injection pressure and increases the injection efficiency. In order to better observe the insertion depth of the nasogastric tube catheter 2, the outer peripheral surface of the nasogastric tube catheter 2 has a length scale line 4. The scale unit of the length scale line 4 can be selected according to the usage requirements. The shape and size of the injection connector 5 can be selected according to the usage requirements. One end of it is connected to the nasogastric tube connector 1, and the other end is provided with an injection hole 6. The injection hole 6 is a round hole. A sealing rubber plug 7 that can seal the injection hole 6 is fixed on the outer wall of the injection connector 5. The shape and specifications of the sealing rubber plug 7 can be selected according to the usage requirements. It may have a round protrusion that can be inserted into the injection hole 6. The spiral drug delivery device includes a drug delivery syringe 8 and a core rod 9. The drug delivery syringe 8 is formed into a generally cylindrical structure. One end of the injection tube has an injection tube 10 that can be inserted into an injection hole 6, and the other end has a push port 11 that can be inserted into the end of the core rod 9. The push port 11 is a circular opening. The inner circumferential surface of the drug delivery syringe 8 and the outer circumferential surface of the core rod 9 are provided with matching internal threads and external threads 12. The outer circumferential surface of the drug delivery syringe 8 of the spiral drug delivery device has a volume scale line 13. The scale unit of the volume scale line 13 can be selected according to the usage requirements, for example, milliliters.

[0013] The principle of using the nasogastric tube with double-layer injection function in Example 1 is as follows: When an intraoperative methylene blue test is required to check for anastomotic leakage, the patient is first placed in a nasogastric tube. The nasogastric tube tube 2 outlet 3 is then observed through a bronchoscope to ensure it is aligned with the methylene blue test site. After insertion, the sealing rubber stopper 7 on the injection connector 5 is removed, and the injection tube 10 of the spiral applicator containing the methylene blue mixture is inserted into the injection hole 6 on the injection connector 5. The core rod 9 of the spiral applicator is then rotated to slowly advance the injection of the methylene blue mixture, allowing it to flow around the anastomosis. The area around the anastomosis is observed to be stained blue. If it is, the leak is located based on the stained area and sutured. The methylene blue mixture is injected again to check the anastomosis until no more blue staining occurs. After suturing the leak, the nasogastric tube is removed according to the prescribed procedure. In summary, the above structure, with its spiral drug delivery device, facilitates the injection of medication at any time during surgery, effectively reducing the backflow of medication caused by gastric pressure during injection. It also allows for slow injection during surgery, preventing excessive injection volume from entering other parts of the body.

Claims

1. A nasogastric tube with double-layer injection function, characterized in that: It includes; The nasogastric tube body consists of a nasogastric tube connector and a nasogastric tube catheter that are fixedly connected as one unit, and the distal end of the nasogastric tube catheter has an outlet hole. The injection connector has one end connected to the nasogastric tube connector and the other end has an injection hole. A sealing rubber plug that can seal the injection hole is fixed on the outer wall of the injection connector. The spiral drug delivery device includes a drug delivery syringe and a core rod. One end of the injection syringe has an injection tube that can be inserted into an injection hole, and the other end has a push port that allows the end of the core rod to be inserted. The inner circumferential surface of the drug delivery syringe and the outer circumferential surface of the core rod are provided with mating internal threads and external threads.

2. The nasogastric tube with double-layer injection function according to claim 1, characterized in that: The discharge port is a straight opening directly opposite the distal end of the nasogastric tube.

3. A nasogastric tube with double-layer injection function according to claim 1, characterized in that: The nasogastric tube has length markings on its outer circumferential surface.

4. A nasogastric tube with double-layer injection function according to claim 1, characterized in that: The outer circumferential surface of the syringe of the spiral drug delivery device has capacity graduation lines.

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