Nutrition support device for anastomotic fistula after esophagus operation

Abstract

The utility model discloses a nutrition support device for anastomotic fistula after esophageal surgery, which belongs to the technical field of medical instruments and comprises a catheter body, a divergence portion, a guide wire, an adjusting component and a moving structure. A nutrition injection channel is formed in the top end of the catheter body, a catheter outlet is formed in the bottom end of the catheter body, side holes are formed in the outer side wall of the catheter, and a front balloon is arranged at the bottom end of the outer side wall of the catheter body. A guide pipe inlet, a front ball inflation inlet and a rear ball inflation inlet are formed in the top end of the branch part, and a front ball inflation valve is arranged at the top end of the front ball inflation inlet. The guide wire is arranged in an inner cavity of the catheter body. A rear ball inflation valve is arranged at the top end of the adjusting assembly. The moving structure is arranged on the outer side wall of the catheter body, the rear balloon is arranged on the surface of the moving structure, nutrient solution is prevented from being injected into an orificium fistulae, accordingly, infection to an anastomotic stoma of a patient is avoided, the rehabilitation efficiency of the patient is improved, and convenience is provided for nutrient solution conveying work of the patient.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically a nutritional support device for postoperative anastomotic leakage of the esophagus. Background Technology

[0002] Esophagectomy is suitable for the following situations: patients diagnosed with early-stage esophageal or cardia cancer, and some stage III lower esophageal cancers, with lesion length within 5cm, in good general condition, without distant metastasis, and without severe damage to heart, lung, liver, or kidney function or other surgical contraindications. Stricter selection should be applied to patients over 70 years of age. Usually, a catheter is needed to suction and decompress the anastomotic leakage after esophagectomy.

[0003] Current decompression procedures typically involve inserting a catheter into the patient's body. However, since the catheter only provides one anastomotic fistula decompression pathway, a small amount of nutrient solution may be injected into the fistula during nutrient delivery, leading to infection of the anastomosis and reducing the patient's recovery efficiency. This also causes inconvenience in delivering nutrient solutions to the patient.

[0004] According to announcement number CN203154559U, a gastrointestinal decompression tube for preventing anastomotic leakage and stenosis after esophageal and gastric cardia cancer surgery is provided. The tube has four side holes at the front end and a plug at the rear end. The tube body is marked with radiopaque lines, and a balloon is located at the lower middle end, with radiopaque lines on the balloon wall. An air supply tube is attached to the inner wall of the tube, with its front end communicating with the balloon through the tube wall and its rear end extending from the tube wall. One side is connected to an inflation valve, and the other side is connected to a pressure gauge via a pressure measuring tube and a two-way valve. This is used to monitor the balloon's expansion degree and display the resistance encountered during expansion, facilitating timely adjustments to the treatment plan and avoiding blind inflation that could cause anastomotic tearing. When fully inflated, the balloon is dumbbell-shaped, with its waist positioned precisely in the center of the anastomosis or stenosis, preventing slippage. This invention has a drainage function, which can prevent various refluxed digestive juices from soaking and corroding the esophageal anastomosis, prevent anastomotic leakage, and also support the anastomosis, which is conducive to anastomotic healing.

[0005] As described above, the gastrointestinal decompression tube only has one anastomotic fistula decompression pathway within the tube. Therefore, when delivering nutrient solution, a small amount of nutrient solution will be injected into the fistula, leading to infection of the anastomosis and reducing the patient's recovery efficiency. This also makes the delivery of nutrient solution inconvenient. Therefore, we need to propose a nutritional support device for anastomotic fistula after esophageal surgery. Utility Model Content

[0006] The purpose of this invention is to provide a nutritional support device for anastomotic leakage after esophageal surgery. By cooperating with the nutrient infusion channel and the inlet of the catheter, the anastomotic leakage decompression pathway and the nutritional support pathway within the catheter are completely isolated. This allows the nutrient solution to be injected into the gastrointestinal tract through a separate nutrient infusion channel, avoiding the injection of nutrient solution into the fistula, thereby preventing infection of the anastomosis and improving the patient's recovery efficiency. It also facilitates the delivery of nutrient solution to the patient, thus solving the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a nutritional support device for anastomotic leakage after esophageal surgery, comprising a catheter body, a bifurcation, a guidewire, an adjustment component for adjusting the height of the inflation valve, and a moving structure for assisting the movement of the balloon; the top of the catheter body has a nutritional injection channel, the bottom of the catheter body has a catheter outlet, the outer side wall of the catheter has a side hole, and the bottom of the outer side wall of the catheter body is provided with an anterior balloon; the bifurcation is located at the top of the catheter body, the inner cavity of the bifurcation is connected to the inner cavity of the catheter body, and the top of the bifurcation is respectively provided with a catheter inlet, an anterior balloon inflation port, and a posterior balloon inflation port, and the top of the anterior balloon inflation port has an anterior balloon inflation valve; the guidewire is located in the inner cavity of the catheter body, one end of the guidewire passes through the catheter inlet, and the other end of the guidewire passes through the catheter outlet; the adjustment component is located at the top of the posterior balloon inflation port, and the top of the adjustment component is provided with a posterior balloon inflation valve; the moving structure is located on the outer side wall of the catheter body, and the surface of the moving structure is provided with a posterior balloon.

[0008] Preferably, the side holes are provided in six groups, and all six groups of side holes are located between the anterior balloon and the posterior balloon.

[0009] Preferably, the anterior and posterior balloons are cylindrical after inflation, and the diameter of both the anterior and posterior balloons is set to 4 cm.

[0010] Preferably, the adjustment component includes a support tube located at the top of the rear ball inflation port, the outer surface of the support tube is provided with a positioning structure, and a movable tube is slidably inserted into the inner cavity of the support tube, the top end of the movable tube being connected to the bottom end of the rear ball inflation valve.

[0011] Preferably, the positioning structure includes a positioning hole, which is formed on the outer surface of the support tube. A positioning pin is provided in the inner cavity of the positioning hole. An adjustment hole is formed on the surface of the movable tube, and the inner cavity of the adjustment hole engages with the surface of the positioning pin.

[0012] Preferably, the adjustment holes are provided in several groups, and the several groups of adjustment holes are distributed at equal intervals on the outer surface of the movable tube.

[0013] Preferably, the movable structure includes a strip-shaped hole, which is formed on the surface of the catheter body. A connecting tube is provided in the inner cavity of the strip-shaped hole. One end of the connecting tube is connected to the inner cavity of the posterior balloon, and the other end of the connecting tube is connected to the posterior balloon inflation valve through an inflation conduit.

[0014] Preferably, an adjustment frame is fixedly connected to the outer wall of the catheter body, and a sealing plate is slidably connected to the inner cavity of the adjustment frame. A through hole is opened on the surface of the sealing plate, and the inner cavity of the through hole of the sealing plate is fixedly connected to the outer surface of the connecting tube.

[0015] Preferably, the catheter outlet is shaped with an oblique cut, and the guidewire is longer than the catheter body.

[0016] Preferably, the positioning holes are provided in two sets, and the two sets of positioning holes are symmetrically distributed on both sides of the outer surface of the support tube.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] This invention provides a nutritional support device for anastomotic leakage after esophageal surgery. By cooperating with the nutrient injection channel and the inlet of the catheter, the anastomotic leakage decompression pathway and the nutritional support pathway within the catheter are completely isolated. This allows the nutrient solution to be injected into the gastrointestinal tract through a separate nutrient injection channel, avoiding the injection of nutrient solution into the fistula. This prevents infection of the anastomosis and improves the patient's recovery efficiency, while also facilitating the delivery of nutrient solution.

[0019] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained through the structures pointed out in the description and the accompanying drawings. Attached Figure Description

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

[0021] Figure 2 This is a schematic diagram showing the disassembled structure of the adjustment component and the rear ball inflation valve of this utility model;

[0022] Figure 3 This is a schematic diagram of the connection between the rear ball inflation valve and the rear balloon of this utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the present invention without the adjustment frame;

[0024] Figure 5 This is a schematic diagram of a partial cross-section of the present invention.

[0025] In the diagram: 1. Catheter body; 2. Branching section; 3. Guidewire; 4. Adjustment assembly; 41. Support tube; 42. Movable tube; 43. Positioning hole; 44. Positioning pin; 45. Adjustment hole; 5. Moving structure; 51. Strip hole; 52. Connecting tube; 6. Nutrient infusion channel; 7. Catheter outlet; 8. Side hole; 9. Anterior balloon; 10. Catheter inlet; 11. Anterior balloon inflation valve; 12. Rear balloon inflation valve; 13. Rear balloon; 14. Adjustment frame; 15. Sealing plate. Detailed Implementation

[0026] 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.

[0027] Please see Figure 1-5 This utility model provides a technical solution: a nutritional support device for anastomotic leakage after esophageal surgery, comprising a catheter body 1, a branch section 2, a guidewire 3, an adjusting assembly 4 for adjusting the height of the inflation valve, and a moving structure 5 for assisting the movement of the balloon; the top end of the catheter body 1 has a nutritional injection channel 6, the bottom end of the catheter body 1 has a catheter outlet 7, the outer side wall of the catheter has a side hole 8, and the bottom end of the outer side wall of the catheter body 1 is provided with an anterior balloon 9; the branch section 2 is located at the top end of the catheter body 1, and the inner part of the branch section 2... The lumen is connected to the inner lumen of the catheter body 1. The top of the branch 2 is provided with a catheter inlet 10, a front balloon inflation port and a rear balloon inflation port. The top of the front balloon inflation port is provided with a front balloon inflation valve 11. The guidewire 3 is provided in the inner lumen of the catheter body 1. One end of the guidewire 3 passes through the catheter inlet 10 and the other end of the guidewire 3 passes through the catheter outlet 7. The adjustment component 4 is provided at the top of the rear balloon inflation port. The top of the adjustment component 4 is provided with a rear balloon inflation valve 12. The moving structure 5 is provided on the outer side wall of the catheter body 1. The surface of the moving structure 5 is provided with a rear balloon 13.

[0028] Specifically, such as Figure 1As shown, the catheter body 1 is inserted into the patient's body. Medical staff manually pull the posterior balloon 13 backward, causing it to move along the surface of the catheter body 1 via the moving structure 5. This allows for the sealing of long esophageal anastomotic leaks. Then, the anterior balloon inflation valve 11 and the posterior balloon inflation valve 12 are opened to inflate the anterior balloon 9 and the posterior balloon 13, sealing the esophagus. Fluid or gas from the anastomotic leak enters the catheter body 1 through the side hole 8 and is discharged. When administering nutrient solution, it can be directly injected into the esophagus through the nutrient infusion channel 6. This completely isolates the anastomotic leak decompression pathway from the nutrient support pathway within the catheter, thus preventing infection of the anastomosis and improving the patient's recovery efficiency. It also facilitates the delivery of nutrient solution. Optionally, the length of the catheter body 1 can be 40cm-150cm, and can be 80cm.

[0029] In addition, there are six sets of side holes 8, all of which are located between the anterior balloon 9 and the posterior balloon 13. The number of side holes 8 improves the efficiency of the catheter in collecting fluid or gas from the anastomosis.

[0030] Preferably, the anterior balloon 9 and the posterior balloon 13 are cylindrical after inflation, and the diameter of both the anterior balloon 9 and the posterior balloon 13 is set to 4 cm. By setting the anterior balloon 9 and the posterior balloon 13, the balloon is close to the cylindrical structure of the esophagus, which closes the esophagus and facilitates the suction of the anastomotic leakage.

[0031] Furthermore, such as Figure 2 As shown, the adjustment component 4 includes a support tube 41, which is located at the top of the rear balloon inflation port. A positioning structure is provided on the outer surface of the support tube 41. A movable tube 42 is inserted and slidably connected to the inner cavity of the support tube 41. The top end of the movable tube 42 is connected to the bottom end of the rear balloon inflation valve 12. Pulling the rear balloon inflation valve 12 causes the movable tube 42 to slide inside the support tube 41, so that the rear balloon inflation valve 12 pulls the rear balloon 13 upward through the inflation conduit, thereby adjusting the position of the rear balloon 13. Finally, the positioning structure is used to fix the adjusted position.

[0032] Specifically, the positioning structure includes a positioning hole 43, which is opened on the outer surface of the support tube 41. A positioning pin 44 is provided in the inner cavity of the positioning hole 43. An adjustment hole 45 is opened on the surface of the movable tube 42. The inner cavity of the adjustment hole 45 is engaged with the surface of the positioning pin 44. When the positioning pin 44 is inserted into the inner cavity of the positioning hole 43 and one end of the positioning pin 44 extends into the inner cavity of the adjustment hole 45 for engagement, the movable tube 42 is positioned in the adjusted position within the support tube 41.

[0033] Preferably, several sets of adjustment holes 45 are provided, and the several sets of adjustment holes 45 are evenly distributed on the outer surface of the movable tube 42. By providing adjustment holes 45, the adjustable range of the movable tube 42 within the support tube 41 is increased.

[0034] In a further preferred embodiment, such as Figure 4 As shown, the movable structure 5 includes a strip-shaped hole 51, which is formed on the surface of the catheter body 1. A connecting tube 52 is provided in the inner cavity of the strip-shaped hole 51. One end of the connecting tube 52 is connected to the inner cavity of the rear balloon 13, and the other end of the connecting tube 52 is connected to the rear balloon inflation valve 12 through an inflation conduit. The connecting tube 52 is pulled upward by the inflation conduit, which causes the connecting tube 52 to move the rear balloon 13 in the inner cavity of the strip-shaped hole 51, thereby changing the position of the rear balloon 13 on the guide rod body. A reinforcing wire is also provided inside the inflation conduit to reinforce the state after the rear balloon inflation valve 12 is connected to the rear balloon 13.

[0035] In addition, such as Figure 5 As shown, an adjusting frame 14 is fixedly connected to the outer wall of the conduit body 1, and a sealing plate 15 is slidably connected to the inner cavity of the adjusting frame 14. A through hole is opened on the surface of the sealing plate 15, and the inner cavity of the through hole of the sealing plate 15 is fixedly connected to the outer surface of the connecting pipe 52. When the connecting pipe 52 moves, it drives the sealing plate 15 to move, so that the sealing plate 15 moves within the adjusting frame 14. Through the cooperation between the sealing plate 15 and the adjusting frame 14, the connecting pipe 52 is provided with support and sealing effect, which improves the stability of the connecting pipe 52 when it moves. At the same time, the strip hole 51 can be sealed when it moves to avoid air leakage.

[0036] Preferably, the catheter outlet 7 is shaped with an oblique cut, and the length of the guidewire 3 is greater than the length of the catheter body 1. The setting of the catheter outlet 7 makes it easier for the catheter to enter the human esophagus. At the same time, the materials used for the catheter are all biocompatible materials, and the surface is covered with hydrophilic materials to facilitate catheter entry. The catheter material is relatively soft, which improves patient comfort.

[0037] Furthermore, two sets of positioning holes 43 are provided, which are symmetrically distributed on both sides of the outer surface of the support tube 41. The positioning holes 43 improve the stability of the movable tube 42 after it is positioned inside the support tube 41.

[0038] In practical use: Initially, the posterior balloon 13 is at the bottom of the slot 51. Then, the catheter is inserted into the patient's esophagus. Depending on the length of the anastomotic fistula, the posterior balloon inflation valve 12 is pulled, causing the movable tube 42 to move upwards. This causes the inflation catheter to pull the connecting tube 52, which in turn moves the posterior balloon 13 on the surface of the catheter body 1. The position between the posterior balloon 13 and the anterior balloon 9 is adjusted. Then, the positioning pin 44 is inserted into the positioning hole 43 and extends into the adjustment hole 45 to position the adjusted position. The inflation tube is then connected to the posterior balloon inflation valve 12 and the anterior balloon inflation valve 11. Finally, the posterior balloon is opened. Inflation valve 12 and anterior balloon inflation valve 11 inflate anterior balloon 9 and posterior balloon 13 through inflation tubing to seal the esophagus. Fluid or gas leaking from the esophageal anastomosis is collected through side hole 8, achieving a decompression effect. When injecting nutrient solution, the nutrient solution can be directly injected into the nutrient injection channel 6 and injected into the esophagus through the bottom of the catheter outlet 7. This completely isolates the anastomosis fistula decompression pathway from the nutrient support pathway within the catheter, preventing nutrient solution from being injected into the fistula and thus avoiding infection of the patient's anastomosis. This improves the patient's recovery efficiency and facilitates the delivery of nutrient solution.

[0039] 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 nutritional support device for anastomotic leakage after esophagectomy, comprising a catheter body (1), characterized in that: It also includes a bifurcation section (2), a guide wire (3), an adjustment assembly (4) for adjusting the height of the inflation valve, and a moving structure (5) for assisting the balloon in moving. The top end of the catheter body (1) is provided with a nutrient injection channel (6), the bottom end of the catheter body (1) is provided with a catheter outlet (7), the outer side wall of the catheter is provided with a side hole (8), and the bottom end of the outer side wall of the catheter body (1) is provided with an anterior balloon (9). The branch section (2) is located at the top of the catheter body (1). The inner cavity of the branch section (2) is connected to the inner cavity of the catheter body (1). The top of the branch section (2) is respectively provided with a catheter inlet (10), a front ball inflation port and a rear ball inflation port. The top of the front ball inflation port is provided with a front ball inflation valve (11). The guidewire (3) is placed in the inner cavity of the catheter body (1), one end of the guidewire (3) passes through the catheter port (10), and the other end of the guidewire (3) passes through the catheter outlet (7); The adjustment component (4) is located at the top of the rear ball inflation port, and the top of the adjustment component (4) is provided with a rear ball inflation valve (12). The movable structure (5) is disposed on the outer side wall of the catheter body (1), and a posterior balloon (13) is disposed on the surface of the movable structure (5).

2. The nutritional support device for esophageal anastomotic leakage according to claim 1, characterized in that: The side holes (8) are provided in six groups, and all six groups of side holes (8) are located between the anterior balloon (9) and the posterior balloon (13).

3. A nutritional support device for esophageal anastomotic leakage according to claim 1, characterized in that: The anterior balloon (9) and posterior balloon (13) are cylindrical after inflation, and the diameter of the anterior balloon (9) and posterior balloon (13) is 4 cm.

4. A nutritional support device for esophageal anastomotic leakage according to claim 1, characterized in that: The adjustment component (4) includes a support tube (41), which is located at the top of the rear ball inflation port. The outer surface of the support tube (41) is provided with a positioning structure. A movable tube (42) is inserted and slidably connected to the inner cavity of the support tube (41). The top end of the movable tube (42) is connected to the bottom end of the rear ball inflation valve (12).

5. A nutritional support device for esophageal anastomotic leakage according to claim 4, characterized in that: The positioning structure includes a positioning hole (43), which is opened on the outer surface of the support tube (41). A positioning pin (44) is provided in the inner cavity of the positioning hole (43). An adjustment hole (45) is opened on the surface of the movable tube (42). The inner cavity of the adjustment hole (45) is engaged with the surface of the positioning pin (44).

6. A nutritional support device for esophageal anastomotic leakage according to claim 5, characterized in that: The adjustment holes (45) are provided in several groups, and the adjustment holes (45) are distributed at equal intervals on the outer surface of the movable tube (42).

7. A nutritional support device for esophageal anastomotic leakage according to claim 1, characterized in that: The movable structure (5) includes a strip-shaped hole (51) which is opened on the surface of the catheter body (1). A connecting tube (52) is provided in the inner cavity of the strip-shaped hole (51). One end of the connecting tube (52) is connected to the inner cavity of the posterior balloon (13), and the other end of the connecting tube (52) is connected to the posterior balloon inflation valve (12) through an inflation conduit.

8. A nutritional support device for esophageal anastomotic leakage according to claim 7, characterized in that: An adjustment frame (14) is fixedly connected to the outer wall of the main body (1) of the conduit. A sealing plate (15) is slidably connected to the inner cavity of the adjustment frame (14). A through hole is opened on the surface of the sealing plate (15). The inner cavity of the through hole of the sealing plate (15) is fixedly connected to the outer surface of the connecting tube (52).

9. A nutritional support device for esophageal anastomotic leakage according to claim 1, characterized in that: The catheter outlet (7) is shaped with an oblique cut, and the length of the guidewire (3) is greater than the length of the catheter body (1).

10. A nutritional support device for esophageal anastomotic leakage according to claim 5, characterized in that: The positioning holes (43) are provided in two sets, and the two sets of positioning holes (43) are symmetrically distributed on both sides of the outer surface of the support tube (41).

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