Nasogastric tube

Abstract

This utility model relates to the field of medical auxiliary products technology, and aims to provide a nasogastric tube, including a double-lumen tube and a single-lumen tube. The double-lumen tube has an internal partition wall that divides its internal space into a stomach cavity and an intestinal cavity. The stomach cavity is open at the first end and closed at the second end, and has several outlet holes on one side of the second end that communicate with the stomach for delivering medication to the patient's stomach. The intestinal cavity is open at both ends. The single-lumen tube has a connecting section at the first end that extends into the second end of the intestinal cavity and adheres to its inner wall. The single-lumen tube communicates with the intestinal cavity for delivering medication to the patient's intestine. In this application, the connecting section adheres to the inner wall of the intestinal cavity. By increasing the length of the connecting section extending into the intestinal cavity, the adhesion area between the connecting section and the intestinal cavity can be increased, thereby increasing the adhesion strength and effectively preventing the single-lumen tube from remaining in the human body due to breakage at the adhesion point.

Description

Technical Field

[0001] This utility model relates to the field of medical auxiliary products technology, and more specifically, it relates to a nasogastric tube. Background Technology

[0002] In recent years, nasogastric tubes have been widely used in clinical practice for gastrointestinal decompression, enteral nutrition delivery, and drug therapy. Existing technologies, such as Chinese patent application CN 118161408 A, disclose a visual three-lumen nasogastric tube. This tube integrates an intestinal lumen, a pressure regulating lumen, and a gastric lumen, combined with a visual fiber guidewire to visualize the insertion process, and utilizes negative pressure suction to reduce gastrointestinal pressure. While this design solves the problems of high failure rates and limited functionality associated with traditional blind insertion, it still has certain limitations: First, the three-lumen integration results in a complex tube wall structure and a large cross-sectional area, potentially increasing discomfort in the patient's nasal cavity and digestive tract; second, the connection points of the multi-lumen tube are prone to breakage due to mechanical stress or long-term use, posing a safety hazard of tube residue remaining in the body; third, the lack of an effective mechanism to deal with blockage of contents during insertion may affect the endoscopic field of vision and insertion efficiency.

[0003] Furthermore, traditional nasogastric tubes often employ a multi-tube parallel or externally positioned lumen structure, resulting in rigid tubes, cumbersome operation, and the connection between single-lumen and multi-lumen tubes often relies on external adhesives or mechanical fixation, which can easily lead to detachment due to insufficient adhesive strength. For example, in some designs, the connection section between the single-lumen tube and the main lumen is relatively short, with limited adhesive area, making it prone to breakage due to traction or corrosion from body fluids during insertion or use, requiring repeated insertion, increasing patient suffering and medical costs.

[0004] To address the aforementioned issues, there is an urgent need for a novel nasogastric tube that optimizes the tube structure while ensuring multifunctional integration, reducing wall thickness to improve patient comfort, and enhancing connection strength to reduce the risk of breakage. Furthermore, it is necessary to integrate irrigation and visual guidance mechanisms to improve insertion accuracy and operational efficiency, thereby providing a safer and more efficient solution for clinical practice. Utility Model Content

[0005] In view of the problems existing in the prior art, the present invention provides a nasogastric tube to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a nasogastric tube, comprising a double-lumen tube and a single-lumen tube, wherein the double-lumen tube has an internal partition wall that divides its internal space into a stomach cavity and an intestinal cavity, the stomach cavity is open at the first end and closed at the second end, and a plurality of fluid outlet holes communicating with the stomach are provided on one side of the second end of the stomach cavity for delivering medication to the patient's stomach, the intestinal cavity is connected at both ends, and the first end of the single-lumen tube has a connecting section that extends into the second end of the intestinal cavity and adheres to its inner wall, the single-lumen tube is connected to the intestinal cavity for delivering medication to the patient's intestine.

[0007] By employing the above-mentioned technical means, the connecting segment adheres to the inner wall of the intestinal lumen. By increasing the length of the connecting segment extending into the intestinal lumen, the bonding area between the connecting segment and the intestinal lumen can be increased, thereby increasing the bonding strength and effectively preventing the single-lumen tube from remaining in the human body due to breakage at the bonding point.

[0008] The present invention is further configured such that a tee connector is connected to the first end of the dual-lumen tube, the tee connector comprising:

[0009] The intestinal lumen connector communicates with the intestinal lumen of the double-lumen tube. It is used to connect external devices to deliver medication into the intestinal lumen and also to insert a visual guidewire or endoscope for guiding the cannulation.

[0010] The gastric connector connects to the gastric cavity of the double-lumen tube and is used to connect external devices to deliver medication to the stomach.

[0011] The present invention is further configured such that the three-way connector also includes a flushing connector for flushing with air or water, the flushing connector being connected to the intestinal lumen of the double-lumen tube, for flushing out obstructions that affect the endoscope's view during the insertion process.

[0012] The present invention is further configured such that the tail end of the single-lumen tube has a rounded end, which reduces the stimulation to the human body during insertion and alleviates the patient's pain.

[0013] The present invention is further configured such that a first liquid inlet hole is provided near the first end of the double-lumen tube for connecting the flushing connector and the intestinal cavity of the double-lumen tube.

[0014] The present invention is further configured such that a second liquid inlet is provided near the first end of the double-lumen tube for connecting the gastric cavity connector and the gastric cavity of the double-lumen tube.

[0015] The present invention is further provided that the intestinal lumen connector is connected to an intestinal lumen sealing plug for sealing it.

[0016] The present invention is further configured such that a gastric cavity sealing plug is connected to the gastric cavity connector to seal it.

[0017] The present invention is further configured such that the first end of the connecting section of the single-lumen tube has an inner chamfer, so that the visual guide wire or endoscope can smoothly enter the single-lumen tube from the double-lumen tube.

[0018] Compared with the prior art, the present invention provides a nasogastric tube, which has the following beneficial effects:

[0019] 1. In this application, the connecting segment adheres to the inner wall of the intestinal lumen. By increasing the length of the connecting segment extending into the intestinal lumen, the bonding area between the connecting segment and the intestinal lumen can be increased, thereby increasing the bonding strength and effectively preventing the single-lumen tube from remaining in the human body due to breakage at the bonding point.

[0020] 2. In this application, the double-lumen tube divides its internal space into a gastric lumen and an intestinal lumen through a partition wall, avoiding the superposition of multiple tube walls. As a result, the double-lumen tube can maintain its delivery capacity while keeping a small cross-sectional area, making the insertion process smoother, reducing patient pain, and improving patient comfort.

[0021] 3. This application allows for the simultaneous insertion of an endoscope through the intestinal connector, intestinal lumen, and single-lumen tube during intubation. While inserting the double-lumen tube, the doctor can observe the internal condition in real time through the endoscope, enabling precise diagnosis and treatment. This avoids the additional pain and operational complexity caused by separate endoscope insertion in existing technologies, reducing patient suffering, significantly improving the efficiency of medical operations, shortening treatment time, and reducing medical costs.

[0022] 4. In this application, during the intubation process, water or air can be flushed from the flushing connector to rinse and remove contents (such as food residue, gastric juice, etc.) that obstruct the view of the endoscope. Attached Figure Description

[0023] Figure 1 A schematic diagram of the overall structure of the nasogastric tube;

[0024] Figure 2 This is a schematic diagram of the overall sectional structure;

[0025] Figure 3 for Figure 1 Schematic diagram of the cross-sectional structure of AA;

[0026] Figure 4 These are schematic diagrams of the cross-sectional structures of the double-lumen tube and the single-lumen tube.

[0027] In the diagram: 1. Double-lumen tube; 101. Separator wall; 102. Stomach cavity; 103. Intestinal cavity; 104. Fluid outlet; 105. First fluid inlet; 106. Second fluid inlet;

[0028] 2. Single-lumen tube; 201. Connecting section; 202. Round end;

[0029] 3. T-connector; 301. Intestinal lumen connector; 302. Gastric lumen connector; 303. Flushing connector; 304. Intestinal lumen sealing plug; 305. Gastric lumen sealing plug. Detailed Implementation

[0030] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0031] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0034] Please see Figure 1-4 The nasogastric tube includes a double-lumen tube 1 and a single-lumen tube 2. The double-lumen tube 1 has a partition wall 101 inside, which divides its internal space into a stomach cavity 102 and an intestinal cavity 103. The stomach cavity 102 is open at the first end and closed at the second end. A number of liquid outlet holes 104 are opened on one side of the second end of the stomach cavity 102 to communicate with the stomach and to deliver the medicine to the patient's stomach. The intestinal cavity 103 is open at both ends. The first end of the single-lumen tube 2 has a connecting section 201 that extends into the second end of the intestinal cavity 103 and adheres to its inner wall. The single-lumen tube 2 is connected to the intestinal cavity 103 and is used to deliver the medicine to the patient's intestine.

[0035] In practical applications, the connecting segment 201 extends into the intestinal lumen 103, causing the outer wall of the connecting segment 201 to adhere to the inner wall of the intestinal lumen 103. By adjusting the extension length of the connecting segment 201, the adhesion area can be adjusted, thereby adjusting the adhesion strength.

[0036] This invention is further configured such that the first end of the double-lumen tube 1 is connected to a three-way connector 3, which includes an intestinal lumen connector 301, a gastric lumen connector 302, and a flushing connector 303. The intestinal lumen connector 301 communicates with the intestinal lumen 103 of the double-lumen tube 1 and is used to connect external equipment to deliver medication into the intestinal lumen 103. It is also used to insert a visual guidewire or endoscope for guiding the insertion. The gastric lumen connector 302 communicates with the gastric lumen 102 of the double-lumen tube 1 and is used to connect external equipment to deliver medication to the stomach. The flushing connector 303 is used for air or water flushing. The flushing connector 303 is connected to the double-lumen tube 1... The intestinal lumen 103 of the tube 1 is connected and used to flush out obstructions that affect the visual guidewire or endoscope during cannulation. The double-lumen tube 1 has a first inlet hole 105 near the first end, which is used to connect the flushing connector 303 and the intestinal lumen 103 of the double-lumen tube 1. The double-lumen tube 1 has a second inlet hole 106 near the first end, which is used to connect the gastric connector 302 and the gastric lumen 102 of the double-lumen tube 1. The intestinal connector 301 is connected to an intestinal sealing plug 304 to seal it, and the gastric connector 302 is connected to a gastric sealing plug 305 to seal it.

[0037] During intubation, a visual guidewire or endoscope can be pre-placed in the intestinal lumen 103 and the single-lumen tube 2 through the intestinal lumen connector 301. The entire unit is then inserted into the patient's nasal cavity, and intubation is guided by the visual guidewire or endoscope. When the visual guidewire or endoscope is obstructed by contents such as food residue or gastric juice, water or air can be introduced through the flushing connector 303 to clear the obstruction in front of the visual guidewire or endoscope, thereby improving the accuracy of intubation. Once the intubation is in place, the visual guidewire or endoscope is pulled out.

[0038] In actual use, both the intestinal connector 301 and the gastric connector 302 can be connected to external equipment. Medicines and nutrients are delivered through the gastric connector 302 and enter the stomach through the gastric cavity 102 and the liquid outlet 104. Medicines are delivered through the intestinal connector 301 and enter the intestine through the intestinal cavity 103 and the single-lumen tube 2.

[0039] In this embodiment, the single-lumen tube 2 has a rounded end 202 at its tail end, which reduces the stimulation to the human body during insertion and alleviates the patient's pain.

[0040] In all the solutions mentioned above, although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A nasogastric tube, characterized in that, It includes a double-lumen tube (1) and a single-lumen tube (2), wherein, The double-lumen tube (1) has an internal partition wall (101) that divides its internal space into a gastric cavity (102) and an intestinal cavity (103). The stomach cavity (102) is open at the head and closed at the tail. Several outlet holes (104) communicating with the stomach are provided on one side of the tail end of the stomach cavity (102) for delivering medication to the patient's stomach. The intestinal lumen (103) is continuous at both ends. The first end of the single-lumen tube (2) has a connecting section (201) that extends into the intestinal lumen (103) and adheres to its inner wall. The single-lumen tube (2) is connected to the intestinal lumen (103) and is used to deliver the drug solution to the patient's intestine.

2. The nasogastric tube according to claim 1, characterized in that, The first end of the double-lumen tube (1) is connected to a tee connector (3), which includes: The intestinal lumen connector (301) communicates with the intestinal lumen (103) of the double-lumen tube (1), and is used to connect external equipment to deliver medication into the intestinal lumen (103). It is also used to insert a visual guidewire or endoscope for guiding the cannulation. The gastric connector (302) is connected to the gastric cavity (102) of the double-lumen tube (1) and is used to connect external devices to deliver the drug solution to the stomach.

3. A nasogastric tube according to claim 2, characterized in that, The three-way connector (3) also includes a flushing connector (303) for flushing with air or water, which is connected to the lumen (103) of the double-lumen tube (1).

4. A nasogastric tube according to claim 1, characterized in that, The single-lumen tube (2) has a rounded end (202) at its tail end.

5. A nasogastric tube according to claim 3, characterized in that, The double-lumen tube (1) has a first inlet hole (105) near the head end, which is used to connect the flushing connector (303) and the intestinal cavity (103) of the double-lumen tube (1).

6. A nasogastric tube according to claim 2, characterized in that, The double-lumen tube (1) has a second inlet hole (106) near the first end, which is used to connect the gastric cavity connector (302) with the gastric cavity (102) of the double-lumen tube (1).

7. A nasogastric tube according to claim 1, characterized in that, The first end of the connecting section (201) of the single-lumen tube (2) has an inner chamfer.

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