Visual nasointestinal tube capable of reducing pressure in stomach

Abstract

The visible nasointestinal tube comprises a stomach tube, the end, entering the human body, of the stomach tube is a far end, and the other end of the stomach tube is a near end; the inner side of the stomach tube is sleeved with an intestinal tube in a clearance mode, the near end of the stomach tube is connected with a suction connector, the near end of the intestinal tube is connected with a feeding connector, the far end of the intestinal tube extends out of the far end of the stomach tube, the intestinal tube is connected with a visual system, and the far end of the visual system is a camera shooting end which is located at the far end of the intestinal tube. The utility model has the advantages that feeding and intragastric decompression are integrated, the catheter indwelling difficulty can be reduced, and the catheter indwelling injury can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, and in particular to a visual nasoenteric tube that can decompress gastric contents. Background Technology

[0002] For patients with impaired gastric emptying or unsuitable for intragastric feeding, as well as those at high risk of reflux aspiration, postpyloric feeding via nasoenteric tubes is currently the most common clinical practice. However, when inserting a nasoenteric feeding tube, due to the inherent physiological structure of the human body, it is difficult for healthcare professionals to locate and determine the position of the esophagus and pylorus. If the tube cannot be accurately inserted into the esophagus, it can easily enter the airway, causing breathing difficulties, choking, and other problems, and in severe cases, even life-threatening situations. In particular, the pylorus, with a diameter of approximately 1.5 cm, is the narrowest part of the digestive tract. During insertion, healthcare professionals need to repeatedly pull and pull the tube multiple times to pass through the pylorus, consuming a significant amount of time and inevitably causing mucosal damage during the pulling and traction process. Furthermore, after the nasoenteric feeding tube is inserted, multiple X-rays are required to determine the insertion position, which can also cause harm to the patient.

[0003] To address the aforementioned issues, Chinese utility model patents (publication number CN216985735U, application number CN202123224799.7) disclose a nasogastric tube device. This device comprises a first tube and a second tube. The first tube has a visual cavity and a pull-rope cavity, while the second tube has a through-feeding cavity. The angle of the bending at the tip of the nasogastric tube can be adjusted by pulling the rope, and images are captured by a camera to accurately insert the tip of the nasogastric tube into the esophagus and pyloric inlet. However, after the nasogastric tube is inserted into the patient's body, the stomach cannot be decompressed, leading to problems such as bloating and reflux. The traditional solution is to insert another gastric tube for gastric decompression, requiring multiple tube insertions. Furthermore, having two tubes in the nasal cavity causes discomfort and increases patient suffering. The aforementioned nasogastric tube device addresses the issue of gastric decompression by providing a through-hole decompression chamber on the second tube. However, this multi-tube and multi-lumen design results in a relatively large diameter of the portion inserted into the intestine, increasing the difficulty of tube placement. It also leads to relaxation of the pyloric sphincter, increasing the risk of reflux and aspiration.

[0004] How to solve the above problems has become an urgent technical issue. Utility Model Content

[0005] The purpose of this invention is to provide a visual nasoenteric tube that integrates feeding and gastric decompression, reducing the difficulty and harm of tube insertion.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] This utility model provides a visual nasoenteric tube for gastric decompression, comprising a gastric tube, one end of which enters the human body as the distal end and the other end as the proximal end; an intestinal tube is sleeved inside the gastric tube, and a suction connector is connected to the proximal end of the gastric tube; a feeding connector is connected to the proximal end of the intestinal tube, and the distal end of the intestinal tube extends beyond the distal end of the gastric tube; and a visual system is connected to the intestinal tube, the distal end of which is a camera end located at the distal end of the intestinal tube.

[0008] Furthermore, a sealing plug is provided at the distal end of the gastric tube, and the inner and outer side walls of the sealing plug are respectively attached to the outer wall of the intestinal tube and the inner wall of the gastric tube to form a structure in which the gastric tube and the intestinal tube are fitted together and the gap between the distal end of the gastric tube and the intestinal tube is sealed. In addition, at least one drainage hole is provided on the side wall of the distal end of the gastric tube.

[0009] Furthermore, the inner diameter of the gastric tube is larger than the outer diameter of the intestinal tube, and the length of the gastric tube is smaller than the length of the intestinal tube.

[0010] Furthermore, the feeding connector is provided with a top cover for sealing.

[0011] Furthermore, the visual system includes a camera signal line, the proximal end of which extends to the proximal end of the intestinal tract and is connected to a signal port, and the distal end of which extends to the distal end of the intestinal tract and is connected to a camera as a camera end.

[0012] Furthermore, the intestinal tract is provided with at least two channels, including a main lumen and an auxiliary lumen. The proximal end of the main lumen is connected to the feeding connector. The camera signal line is intermittently sleeved in the auxiliary lumen. At least one nutrient solution outlet is provided on the side wall at the distal end of the intestinal tract, and the nutrient solution outlet is connected to the main lumen.

[0013] Furthermore, a light-transmitting cover is provided at the distal end of the intestinal tract, and the distal end of the camera extends out of the intestinal tract and is in close contact with the inner wall of the light-transmitting cover.

[0014] Furthermore, it also includes a bending control handle, a bending control soft section, and at least one pull-wire cavity, wherein the bending control handle is located at the proximal end of the gastric tube, the bending control soft section is located at the distal end of the intestinal tube, the pull-wire cavity is located on the intestinal tube and the proximal end of the pull-wire cavity communicates with the gastric tube, and a pull-wire is slidably sleeved in the pull-wire cavity, one end of the pull-wire is connected to the distal end of the bending control soft section and the other end of the pull-wire is connected to the bending control handle to form a structure capable of controlling the bending angle of the distal end of the intestinal tube.

[0015] Furthermore, the bending control soft segment has a snake-bone structure.

[0016] Due to the adoption of the above structure, the beneficial effects of this utility model are as follows:

[0017] This invention integrates feeding and gastric decompression into a single procedure. The intestinal tube is fitted inside the gastric tube within the intestinal space, with the distal end of the intestinal tube passing through and extending beyond the gastric tube. This allows the intestinal tube to serve as a nutrient delivery channel, directly delivering nutrients into the intestine via a feeding connector. The space between the gastric tube and intestinal tube acts as a channel for gastric contents, which are expelled through a suction connector connected to an external negative pressure device. This allows for integrated feeding and gastric decompression, enabling single-insertion care to simultaneously provide enteral nutrition support and gastric decompression, reducing the workload of medical staff and minimizing patient discomfort from multiple intubations. Furthermore, the invention utilizes a visual system on the intestinal tube. During insertion, a camera provides a view of the digestive tract, allowing for the determination of the distal intestinal position based on tissue features. This further simplifies insertion, ensuring the feeding tube successfully enters the esophagus and passes through the pylorus, preventing accidental airway entry, and accurately determining the insertion location, thus reducing insertion time and patient discomfort.

[0018] The present invention will become clearer from the following description and in conjunction with the accompanying drawings, which are used to explain the embodiments of the present invention. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present utility model;

[0021] Figure 2 This is a partially enlarged view of part A of this utility model;

[0022] Figure 3 This is a cross-sectional view of the intestinal tract according to Embodiment 1 of this utility model;

[0023] Figure 4 This is a schematic diagram of the overall structure of Embodiment 2 of this utility model;

[0024] Figure 5 This is a partially enlarged view of part B of the present invention;

[0025] Figure 6 This is a cross-sectional view of the intestinal tube in Embodiment 2 of this utility model.

[0026] In the diagram: 1-gastric tube, 11-drainage hole, 2-intestinal tube, 21-main lumen, 22-auxiliary lumen, 23-nutrient solution outlet, 24-pull-wire lumen, 25-pull-wire, 3-suction connector, 4-feeding connector, 5-light-transmitting cover, 6-sealing plug, 71-camera signal cable, 72-signal port, 73-camera, 8-bending handle, 9-bending flexible section. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Example 1

[0029] Please refer to Figures 1 to 3 A visual nasoenteric tube for intragastric decompression includes a gastric tube 1, with one end of the gastric tube 1 entering the body being distal and the other end being proximal. An intestinal tube 2 is fitted inside the gastric tube 1, and a suction connector 3 is connected to the proximal end of the gastric tube 1. A feeding connector 4 is connected to the proximal end of the intestinal tube 2, and the distal end of the intestinal tube 2 extends beyond the distal end of the gastric tube 1. This allows nutrients to be directly delivered into the intestine via the intestinal tube 2 through the feeding connector 4, and the gap between the gastric tube 1 and the intestinal tube 1 can serve as a passageway for gastric contents. By connecting an external negative pressure device through the suction connector 3, the gastric contents are discharged from the body, thus integrating feeding and gastric decompression. This allows for a single tube placement, simultaneously providing enteral nutrition support and gastric decompression. Furthermore, a visual system is connected to the intestinal tube 2, with a camera at the distal end of the system located at the distal end of the intestinal tube 2. This allows the location of the distal end of the intestinal tube 2 to be determined based on the tissue features within the field of view provided by the camera, eliminating the need for X-rays and reducing exposure and costs for both medical staff and patients.

[0030] In this embodiment, the gastric tube 2 has a single-lumen structure, and the suction connector 3 is a three-way connector. The first end of the suction connector 3 is connected to the proximal end of the gastric tube 1, and the second end of the suction connector 3 is used to connect to an external negative pressure device. The distal end of the intestinal tube 2 enters the suction connector 3 from the third end of the suction connector 3, passes through the gastric tube 1, and then extends out of the distal end of the gastric tube 1.

[0031] In this embodiment, a sealing plug 6 is provided at the distal end of the gastric tube 1. The inner and outer side walls of the sealing plug 6 are respectively fitted to the outer wall of the intestinal tube 2 and the inner wall of the gastric tube 1 to form a structure in which the gastric tube 1 and the intestinal tube 2 are fitted together with a gap, and the gap between the distal end of the gastric tube 1 and the intestinal tube 2 is sealed. The sealing plug 6, the gastric tube 1, and the intestinal tube 2 are made of the same material, and the connection between the three can be by welding, bonding, or other methods. At least one drainage hole 11 is provided on the side wall of the distal end of the gastric tube 1. The gastric contents pass through the drainage hole 11 through the gap between the gastric tube 1 and the intestinal tube 2 and are discharged from the patient's body through the drainage connector 3. In this embodiment, there are two sealing plugs 6, one for sealing the gap between the distal end of the gastric tube 1 and the intestinal tube 2, and the other for sealing the gap between the third end of the suction connector 3 and the intestinal tube 2, which can improve airtightness and negative pressure suction.

[0032] In this embodiment, the inner diameter of the gastric tube 1 is larger than the outer diameter of the intestinal tube 2, so that the gastric tube 1 and the intestinal tube 2 fit together with a gap. The gap between the two can be used as a channel for the gastric contents to be discharged from the body, thereby achieving the purpose of decompression in the stomach. The length of the gastric tube 1 is smaller than the length of the intestinal tube 2, ensuring that the distal end of the intestinal tube 2 can extend out of the gastric tube 1 and the proximal end of the intestinal tube 2 is fitted into the gastric tube 1 to form a gap.

[0033] In this embodiment, the feeding connector 4 is provided with a top cover 41 for sealing, to prevent external debris from entering the intestinal tract 2 before feeding the nutrient solution.

[0034] In this embodiment, the visual system includes a camera signal cable 71. The proximal end of the camera signal cable 71 extends to the proximal end of the intestinal tract 2 and is connected to a signal port 72. The distal end of the camera signal cable 71 extends to the distal end of the intestinal tract 2 and is connected to a camera 73 as the imaging end. The signal port 72 is a Type-C, micro-USB, or other interface, which can be connected to a display device via an extension cable for wired connection to imaging, or connected to a wireless transmitter to send the signal to the display device for imaging wirelessly. Thus, the location of the distal end of the intestinal tract 2 can be determined by the field of view provided by the camera 7 at the distal end of the intestinal tract 2, based on the tissue features in the field of view, without the need for X-rays, reducing the exposure and costs for both medical staff and patients.

[0035] In this embodiment, the intestinal tract 2 is provided with at least two channels, including a main lumen 21 and an auxiliary lumen 22. The proximal end of the main lumen 21 is connected to the feeding connector 4. The camera signal line 71 is intermittently sleeved within the auxiliary lumen 22. At least one nutrient solution outlet 23 is provided on the side wall at the distal end of the intestinal tract 2, and the nutrient solution outlet 23 is connected to the main lumen 21. The feeding connector 4, the main lumen 21, and the nutrient solution outlet 23 are sequentially connected to form a channel for delivering nutrient solution; the auxiliary lumen 22 serves as the channel for the camera signal line 71.

[0036] In this embodiment, a light-transmitting cover 5 is provided at the distal end of the intestinal tube 2, and the distal end of the camera 73 extends out of the intestinal tube 2 and is in close contact with the inner wall of the light-transmitting cover 5. The light-transmitting cover 5 is made of high light-transmitting materials such as PC and PS.

[0037] In this embodiment, medical personnel first connect the signal port 72 to the display device to view the front end of the intestinal tube 2. Then, the nasoenteric tube is inserted along the nasal cavity. When it reaches the boundary between the esophagus and airway, the view captured by the camera 73 clearly distinguishes the esophagus and airway, preventing the nasoenteric tube from entering the airway. After entering the esophagus, when it passes through the cardia into the stomach, the view captured by the camera 73 clearly shows the structure and physiological state of the stomach. When the nasoenteric tube bends in the stomach, it can be clearly identified and straightened. The position of the pylorus can also be seen through the view of the camera 73, making it possible to... The nasoenteric tube is inserted by aligning it with the pylorus, reducing patient injury and insertion time. Once the tube is in place, the location of the distal end of the intestinal tract 2 can be determined using the field of view provided by camera 73, eliminating the need for X-rays and reducing exposure and costs for both medical staff and patients. After insertion, the tube sequentially provides the patient with necessary nutrients via feeding connector 4, main lumen 21, and nutrient solution outlet 23. When gastric contents need to be aspirated, an external negative pressure device can be connected to suction connector 3, allowing the contents to be suctioned out of the patient's body through drainage hole 11 and gastric tube 1. This embodiment, through a visual system, significantly reduces the risks and costs associated with tube placement. Furthermore, for patients requiring gastric decompression, a single insertion can address both feeding and drainage / decompression needs, avoiding the discomfort caused by repeated insertions and reducing time and financial costs for medical personnel.

[0038] Example 2

[0039] The difference between this embodiment and Embodiment 1 is that:

[0040] Please refer to Figures 4 to 6 This embodiment also includes a bending control handle 8, a bending control flexible section 9, and at least one pull-wire cavity 24. The bending control handle 8 is located at the proximal end of the gastric tube 1, the bending control flexible section 9 is located at the distal end of the intestinal tube 2, and the pull-wire cavity 24 is located on the intestinal tube 2 with its proximal end communicating with the gastric tube 1. A pull-wire 25 is slidably fitted within the pull-wire cavity 24. One end of the pull-wire 25 is connected to the distal end of the bending control flexible section 9, and the other end of the pull-wire 25 is connected to the bending control handle 8, forming a structure capable of controlling the bending angle of the distal end of the intestinal tube 2. By changing the bending angle of the distal end of the intestinal tube 2 sequentially via the bending control handle 8, the pull-wire 25, and the bending control flexible section 9, the direction of the intestinal tube 2's advance is guided, allowing the intestinal tube 2 to be better aligned with the esophagus or pylorus before insertion, reducing patient injury and insertion time.

[0041] In this embodiment, the suction connector 3 and the feeding connector 4 are connected at one end to form a Y-shaped connector structure with an internal double-lumen channel, and the double-lumen channel is respectively connected to the gastric tube 1 and the intestinal tube 2.

[0042] In this embodiment, the bending control segment 9 has a snake-bone structure. The bending control segment 9 is made of materials such as metal and plastic, and the bending angle of the distal bend of the intestinal tract 2 is changed by applying tension to the bending control segment 9 through the pull wire 25.

[0043] In this embodiment, medical staff first connect the signal port 72 to the display device to see the field of view of the front end of the intestinal tube 2. Then, the nasoenteric tube is inserted along the nasal cavity. When it reaches the boundary between the esophagus and the airway, the field of view captured by the camera 73 can clearly distinguish the esophagus and the airway. The bending control handle 8 controls the bending of the bending control soft segment 9 of the intestinal tube 2, so that the distal end of the intestinal tube 2 is aligned with the esophagus and enters, avoiding insertion of the nasoenteric tube into the airway. After the nasoenteric tube enters the esophagus, when it enters the stomach through the cardia, the field of view captured by the camera 73 can clearly see the structure and physiological state of the stomach. The position of the pylorus can also be seen through the field of view of the camera 73. The bending control handle 8 controls the bending of the bending control soft segment 9, so that the intestinal tube 2 is aligned with the pylorus and inserted, reducing patient injury and tube insertion time.

[0044] The preferred embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above. Devices and structures not described in detail herein should be understood as being implemented in a conventional manner within the art. Any person skilled in the art can make many possible variations and modifications to the technical solutions of this utility model using the disclosed methods and techniques, or modify them into equivalent embodiments with equivalent changes, without departing from the scope of the technical solution of this utility model. This does not affect the essential content of this utility model. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model, without departing from the content of the technical solution of this utility model, still fall within the protection scope of the technical solution of this utility model.

Claims

1. A visual nasogastric tube capable of reducing intragastric decompression, comprising a gastric tube (1), wherein one end of the gastric tube (1) entering the human body is the distal end and the other end of the gastric tube (1) is the proximal end; characterized in that: An intestinal tube (2) is sleeved in the inner gap of the stomach tube (1), and the proximal end of the stomach tube (1) is connected to a suction connector (3), the proximal end of the intestinal tube (2) is connected to a feeding connector (4), and the distal end of the intestinal tube (2) extends out of the distal end of the stomach tube (1), and the intestinal tube (2) is connected to a visual system, and the distal end of the visual system is a camera end and is located at the distal end of the intestinal tube (2).

2. A visual nasogastric tube capable of reducing gastric decompression according to claim 1, characterized in that: A sealing plug (6) is provided at the distal end of the stomach tube (1), and the inner and outer side walls of the sealing plug (6) are respectively fitted with the outer wall of the intestinal tube (2) and the inner wall of the stomach tube (1) to form a structure in which the gap between the stomach tube (1) and the intestinal tube (2) is matched and the gap between the distal end of the stomach tube (1) and the intestinal tube (2) is closed, and at least one drainage hole (11) is opened on the side wall of the distal end of the stomach tube (1).

3. The visual nasogastric tube capable of reducing gastric decompression according to claim 1, characterized in that: The inner diameter of the stomach tube (1) is greater than the outer diameter of the intestinal tube (2), and the length of the stomach tube (1) is less than the length of the intestinal tube (2).

4. The visual nasogastric tube capable of reducing gastric decompression according to claim 1, characterized in that: The feeding joint (4) is provided with an upper cover (41) for sealing.

5. A visual nasogastric tube capable of reducing gastric decompression according to any one of claims 1 to 4, characterized in that: The visual system comprises a camera signal line (71), the proximal end of the camera signal line (71) extending to the proximal end of the intestinal tube (2) and connected to a signal port (72), and the distal end of the camera signal line (71) extending to the distal end of the intestinal tube (2) and connected to a camera (73) as a camera end.

6. The visual nasogastric tube capable of reducing gastric decompression according to claim 5, characterized in that: The intestinal tube (2) is provided with at least two passages, including a main cavity (21) and an auxiliary cavity (22); the proximal end of the main cavity (21) is connected to the feeding connector (4); the camera signal line (71) is sleeved in the auxiliary cavity (22); and at least one nutrient solution outlet (23) is provided on the side wall at the distal end of the intestinal tube (2); the nutrient solution outlet (23) is connected to the main cavity (21).

7. The visual nasogastric tube capable of reducing gastric decompression according to claim 6, characterized in that: A light-transmitting cover (5) is provided at the distal end of the intestinal tube (2), and the distal end of the camera (73) extends out of the intestinal tube (2) and is in close contact with the inner wall of the light-transmitting cover (5).

8. A visual nasogastric tube capable of reducing gastric decompression according to claim 6 or 7, characterized in that: It also includes a bending control handle (8), a bending control soft segment (9), and at least one pull-wire cavity (24), wherein the bending control handle (8) is arranged at the proximal end of the gastric tube (1), the bending control soft segment (9) is arranged at the distal end of the intestinal tube (2), the pull-wire cavity (24) is arranged on the intestinal tube (2) and the proximal end of the pull-wire cavity (24) is connected to the gastric tube (1), and a pull-wire (25) is provided in the sliding sleeve of the pull-wire cavity (24), one end of the pull-wire (25) is connected to the distal end of the bending control soft segment (9) and the other end of the pull-wire (25) is connected to the bending control handle (8) to form a structure capable of controlling the bending angle of the distal end of the intestinal tube (2).

9. The visual nasogastric tube capable of reducing gastric decompression according to claim 8, characterized in that: The bending control soft section (9) is a snake-bone structure.

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