Stomach tube with esophageal dilation function

Abstract

The utility model belongs to the field of medical instruments, and relates to a stomach tube with an esophageal dilatation function, which comprises a tube body, a trachea cuff and an inflatable balloon, the trachea cuff is provided with a mounting part and a dilatation part, the mounting part is embedded in the tube wall of the tube body, and the dilatation part is communicated with the mounting part and extends out of the tube body; the inflation balloon is provided with a connecting tube and an inflation head, one end of the connecting tube is connected with the trachea cuff, the other end of the connecting tube is connected with the inflation head, and the inflation head is located on the outer side of the tube body. The stomach tube not only has the enteral nutrition or gastrointestinal decompression function of a common stomach tube, but also can realize esophageal dilation by using the trachea cuff, and plays a role in preventing esophageal stenosis after an esophageal operation for a patient after the esophageal operation through continuous dilation; for a patient suffering from esophageal stenosis caused by tumor obstruction, the purpose of improving obstruction by self-feeding can be achieved by utilizing the gap between the trachea cuff blades, and oral feeding of the patient suffering from esophageal stenosis is achieved.

Description

Technical Field

[0001] The utility model belongs to the field of medical devices and relates to a gastric tube with esophageal dilation function. Background Art

[0002] The main symptom of esophageal cancer is dysphagia. Some patients are unable to eat due to tumor obstruction or esophageal stenosis when seeking medical treatment or after treatment. Currently, the clinical treatment strategy for this part of patients is to insert a gastric tube to improve the situation of patients being unable to eat through nasogastric enteral nutrition. However, in this way, although enteral nutrition can be provided through the gastric tube, the patient still cannot eat. At the same time, due to severe obstruction, the esophageal tumor becomes more stenotic after the gastric tube is inserted, and the saliva and esophageal mucus secreted by the patient cannot pass downward through the stenosis on their own, resulting in the patient's reflux and vomiting of saliva, which is very painful. In the surgery of esophageal / gastric tumors, the incidence of postoperative anastomotic stenosis is 0.5%-16%. The incidence of stenosis after endoscopic submucosal dissection (ESD) for large-area early esophageal cancer is 56%-76%, and the stenosis rate after surgery for circumferential lesions is as high as 100% (from "Expert Consensus on the Endoscopic Prevention and Treatment of Benign and Malignant Esophageal Stenosis in China 2020"). How to prevent esophageal stenosis after esophageal reconstruction surgery or after endoscopic submucosal resection (ESD) has always been the focus of research. It is generally believed that placing a balloon in the esophagus after surgery to dilate the anastomosis or the ESD surgical site can improve the incidence of esophageal stenosis.

[0003] Although there are clinical strategies to solve the problems of esophageal stenosis or malnutrition, the current strategies are very limited and can only solve a small part of the problems, and each strategy has obvious deficiencies.

[0004] (1) Ordinary gastric tube. The ordinary gastric tube can indeed solve the nutritional problems of patients after esophageal stenosis, that is, enteral nutrition is provided through the gastric tube. However, after the patient inserts an ordinary gastric tube, they still cannot eat independently. Moreover, after the gastric tube is inserted, due to the gastric tube occupying a part of the space of the esophageal stenosis, it may be more difficult to eat, and discomfort symptoms such as reflux and vomiting of saliva may occur.

[0005] (2) Esophageal metal stent. Currently, metal stents can be placed in the esophagus to dilate the esophagus. However, the process of placing this metal stent is cumbersome and requires gastroscopy cooperation. At the same time, the cost of the metal stent is expensive. Because metal stents are all long and have poor flexibility, patients have obvious discomfort after placement. Removing the metal stent is also very troublesome. More importantly, for the prevention of stenosis after esophageal anastomosis or ESD surgery, metal stents cannot be placed clinically to solve this problem.

[0006] (3) Esophageal inflation balloon. For the prevention of stenosis after esophageal anastomosis or ESD surgery, a spherical inflation balloon can be clinically placed to dilate the esophageal stenosis. However, this spherical balloon completely blocks the esophagus after inflation, and the patient cannot eat. It can only be deflated during meals and inflated when not eating, with repeated alternating operations. Such operations are cumbersome and the balloon is prone to displacement. At the same time, after completely blocking the esophagus, the patient will experience discomfort symptoms such as reflux and vomiting of saliva. After searching the Chinese patent database, there is a patent for an annular inflation balloon, which can support the esophagus during use. The balloon is hollow and the patient can eat at the same time. However, this patent requires endoscopic assistance during placement, and the operation is cumbersome. At the same time, the annular balloon has poor supporting force and is easily flattened by esophageal tumors. Moreover, this patent cannot measure the balloon pressure, which easily leads to excessive dilation and causes extreme discomfort to the patient.

[0007] Chinese Patent CN218853308U discloses a gastric tube for esophageal dilation that can be fixed, including a tube body, a balloon, a clamping member, and an adjusting member; the clamping member is detachably arranged at the upper end of the tube body, and a sticking piece is provided on the clamping member. The adjusting member includes a limit snap ring, a sliding block, and a pull bar. A plurality of the sliding blocks are arranged around the tube body, and a sliding groove for the sliding block to slide is provided on the outer wall of the tube body. The sliding block is connected to the inner side of the balloon, and both ends of the balloon are abutted between the two limit snap rings. An inflation tube for inflating the inside of the balloon is provided on the balloon, and the pull bar is connected to the sliding block and extends upward to the upper end of the tube body. The balloon of this patent blocks the esophagus after inflation, causing difficulties for the patient to eat. Summary of the Utility Model

[0008] The purpose of the present utility model is to significantly overcome the deficiencies of the prior art and provide a gastric tube with an esophageal dilation function that is convenient to operate, significantly improves the patient's choking symptom during eating, prevents esophageal stenosis, and improves the patient's quality of life.

[0009] The technical solution adopted by the present utility model to solve the technical problem is:

[0010] The present utility model provides a gastric tube with an esophageal dilation function, including: a tube body, a tracheal cuff, and an inflation balloon. The tracheal cuff has an installation part and a dilation part. The installation part is embedded in the tube wall of the tube body, and the dilation part is communicated with the installation part and extends outside the tube body; the inflation balloon has a connecting tube and an inflation head. One end of the connecting tube is connected to the tracheal cuff, and the other end is connected to the inflation head, and the inflation head is located outside the tube body.

[0011] Further, the installation part of the tracheal cuff is annular, and the dilation part has a plurality of blades.

[0012] Further, the blades of the dilation part on the inflation balloon are three, the included angle between every two blades is 120 degrees, and the length of the blade in the radial direction of the tube body is 3 cm.

[0013] Further, there are two tracheal cuffs, which are closely attached to each other and arranged at equal angles.

[0014] Further, the tube body has a proximal gastric end and a distal gastric end, and the proximal gastric end is fusiform.

[0015] Further, there are openings provided on the proximal gastric end.

[0016] Further, there are six openings, which are evenly distributed on both sides of the tube body.

[0017] Further, a universal funnel joint is provided at the distal gastric end.

[0018] Further, it further includes a metal guide wire, and the metal guide wire is located inside the tube body.

[0019] Further, digital scales are provided on the tube body at intervals of 1 cm.

[0020] The advantages and positive effects of the present utility model are as follows:

[0021] 1. The present utility model not only has the functions of enteral nutrition or gastrointestinal decompression of an ordinary gastric tube, but also can use the tracheal cuffs to expand the esophagus. For patients after esophageal surgery, continuous expansion can play a role in preventing esophageal stenosis after surgery; for patients with esophageal stenosis caused by tumor obstruction, the gap between the tracheal cuff blades can be utilized, and the food taken orally by the patient can pass through this gap through the stenosis, achieving the purpose of self-feeding to improve the obstruction and realizing oral feeding for patients with esophageal stenosis.

[0022] 2. By providing two juxtaposed and closely attached tracheal cuffs, the present utility model can selectively open 1 - 2 tracheal cuffs, which can fully cope with various esophageal stenosis situations, and while taking into account the comfort of the patient, can expand the esophagus to the greatest extent.

[0023] 3. The proximal gastric end of the present utility model is fusiform, which is easier to pass through the stenosis than an ordinary round gastric tube, and is helpful for the placement of the gastric tube.

[0024] 4. The manufacturing process and materials of the present utility model are simple and economical, and the cost is lower than that of a metal stent with an expansion function, significantly reducing the medical cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic structural view of the gastric tube with esophageal dilation function of the present utility model;

[0026] Figure 2 is a side view of the tube body and the tracheal cuffs of the present utility model;

[0027] Figure 3 is Figure 2 a cross-sectional view taken along the A - A direction of

[0028] Figure 4 is Figure 2 a sectional view taken along the B-B direction of

[0029] Figure 5 is Figure 2 a schematic structural view of the tube body and the tracheal cuff of

[0030] Figure 6 is a usage state diagram of a gastric tube with an esophageal dilation function according to an embodiment of the present invention;

[0031] Figure 7 is a usage state diagram of a gastric tube with an esophageal dilation function according to another embodiment of the present invention;

[0032] Figure 8 is a usage state diagram of a gastric tube with an esophageal dilation function according to another embodiment of the present invention.

[0033] Among them, the above-mentioned drawings include the following reference numerals:

[0034] 1 - tube body; 11 - proximal gastric end; 12 - distal gastric end; 2 - tracheal cuff; 21 - installation part; 22 - dilation part; 3 - inflation balloon; 31 - connecting tube; 32 - inflation head; 4 - opening; 5 - universal funnel joint. Detailed implementation manners

[0035] The present invention will be further described in detail below through specific embodiments. The following embodiments are only descriptive and not restrictive, and the protection scope of the present invention cannot be limited thereby.

[0036] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0037] As Figure 1 shown, the present invention provides a gastric tube with an esophageal dilation function, including: a tube body 1, a tracheal cuff 2, and an inflation balloon 3.

[0038] As Figure 1 shown, the tube body 1 has a proximal gastric end 11 and a distal gastric end 12. A metal guide wire is provided inside the tube body 1. The metal guide wire serves as a tube-passing tool and plays a role in guiding and dredging. The inner diameter of the tube body 1 is 3.5 mm, and both ends are open. The proximal gastric end 11 is fusiform, which is easier to pass through the stenosis than an ordinary round gastric tube, facilitating the placement of the gastric tube. Six openings 4 are provided on the proximal gastric end 11, evenly distributed on both sides of the tube body 1. These openings 4 are used for nutrient solution release or gastric juice negative pressure aspiration. To facilitate the delivery of nutrient solution, a universal funnel joint 5 is provided at the distal gastric end 12.

[0039] As Figure 1 shown, the inflatable balloon 3 has a connecting tube 31 and an inflation head 32. One end of the connecting tube 31 is connected to the tracheal cuff 2, and the other end is connected to the inflation head 32. The inflation head 32 is located outside the tube body 1. The gastric tube with esophageal dilation function of the present utility model is a three-chamber pipeline made of polyurethane material with a length of 100 cm. The inner cavity of the tube body 1 and the pipelines of the connecting tubes 31 of the two inflatable balloons 3 together form a three-chamber structure. One end of the connecting tube 31 of the inflatable balloon 3 leads to the tracheal cuff 2 for gas transmission; the other end is connected to the inflation head 32 of the inflatable balloon 3 to achieve pressure supply and pressure measurement.

[0040] As Figures 2 - 5 shown, the tracheal cuff 2 has a mounting portion 21 and a dilation portion 22. The mounting portion 21 is embedded in the tube wall of the tube body 1, and the dilation portion 22 communicates with the mounting portion 21 and extends outside the tube body 1. The mounting portion 21 of the tracheal cuff 2 is annular, and the dilation portion 22 has multiple blades. The length of the blades in the radial direction of the tube body 1 is 3 cm, and the inner diameter of the tube body 1 at the inflatable balloon 3 is 2 mm. At the tracheal cuff 2, the inner diameter of the tube body 1 becomes thinner. When the tracheal cuff 2 is in the unopened state, the outer diameter length of the entire gastric tube is consistent, ensuring the smooth process of inserting the gastric tube. The tracheal cuff 2 of the present utility model is fixed on the gastric tube, and the operation of inserting the gastric tube clinically is very simple and can usually be carried out at the bedside. After inserting the gastric tube, inflating the tracheal cuff 2 can dilate the esophageal stenosis, and the operation is very simple, saving medical costs and operation time.

[0041] As Figures 2 - 5 shown, the present utility model uses two tracheal cuffs 2. The two tracheal cuffs 2 are close to each other and are arranged at equal angles. The length of the blades of the dilation portion 22 on each tracheal cuff 2 in the radial direction of the tube body 1 is 3 cm. This setting is formulated according to the actual situation of patients with esophageal stenosis. In actual operation, according to the specific situation of the patient, after sending the tracheal cuff 2 to the target position, 1-2 tracheal cuffs 2 can be selectively opened, which can better play the role of dilating the esophagus and can also reduce the discomfort caused by esophageal dilation.

[0042] As shown Figures 3 - 5 in the figure, the blades of the expansion part 22 on the balloon 3 for inflation are three, and the included angle between every two blades is 120 degrees. The three blades of each tracheal cuff 2 are arranged at 120 degrees, and the cross section is approximately a clover. The utility model adopts a clover-shaped tracheal cuff instead of a spherical tracheal cuff. After the tracheal cuff 2 of the utility model is opened, the tri-leaf expansion force is more stable, and the esophagus can be expanded. Also, because there are gaps between each blade, the food taken in by the patient through the mouth can pass through this gap through the stenosis, achieving the purpose of self-feeding to improve the obstruction. According to the different positions of the tracheal cuff 2 on the gastric tube, this gastric tube has 4 models. For example, the tail ends of the two tracheal cuffs 2 are located at 12 cm (model A), 16 cm (model B), 20 cm (model C), and 24 cm (model D) from the tail end of the gastric tube. In addition, for the convenience of reading, the tube body 1 is provided with digital scales at intervals of 1 cm.

[0043] The utility model can be completed beside the bed. Beside the bed, according to the process of inserting an ordinary gastric tube for the patient, insert the gastric tube of the utility model through the nose. Pay attention to the scale on the gastric tube and stop when the tracheal cuff 2 reaches the target depth. Inflate the balloon 3 for inflation and measure the pressure of the balloon 3 for inflation, which can usually be maintained at about 30 cmH2O. The specific pressure of the balloon 3 for inflation is appropriately adjusted according to the patient's eating situation and comfort level. After opening the first tracheal cuff 2, ask the patient to drink a small amount of water and observe whether the water can flow smoothly into the stomach. If the effect is not good, the gastric tube can be adjusted up or down by 1 - 2 cm appropriately, and the second tracheal cuff 2 can be opened as the situation requires. Repeatedly conduct the water drinking test to judge whether the esophagus is expanded.

[0044] The utility model has all the functions of a gastric tube, that is, it can be used for enteral nutrition or gastrointestinal decompression. At the same time, the esophagus stenosis can also be dilated through the tracheal cuff 2. For patients with a stenosed esophagus, using the utility model can allow the patient to eat through the mouth. For patients after esophageal surgery, the tracheal cuff 2 can be placed at the damaged esophageal mucosa, such as the anastomosis site, and continuous dilation can play a role in preventing esophageal stenosis after surgery. For patients with esophageal stenosis and choking during eating, gastroscopy examinations will be performed. The gastroscopy will describe the position of the lesion from the incisors. When using the utility model, first refer to the description of the esophageal lesion position by gastroscopy and select the model of the tracheal cuff 2 in the approximate area. For example, if the patient is a patient with esophageal cancer at 30 - 35 cm, then select model A.

[0045] Example 1:

[0046] As Figure 6As shown in the figure, for patients with esophageal obstruction caused by esophageal tumors, the application of this gastric tube can achieve the purpose of dilating esophageal stenosis and improving the patient's choking symptom during eating. First, the distance from the esophageal mass to the incisors can be measured by gastroscopy, and the corresponding model of gastric tube can be selected. For example, if the esophageal mass is 25-28 cm from the incisors, the type B gastric tube can be selected. The distance between the end of the tracheal cuff of the type B gastric tube and the end of the gastric tube is 16 cm. According to the normal method of inserting the gastric tube through the nose, insert this utility model gastric tube, pay attention to the scale on the gastric tube, and insert it down to the 49 cm scale (the distance between the tracheal cuff and the end of the gastric tube is 16 cm + 28 cm from the incisors + the extra distance of inserting the gastric tube through the nose compared with inserting the gastric tube from the incisors is 5 cm). At this time, the end of the tracheal cuff is exactly located at the lower edge of the esophageal mass. Inflate the balloon through the inflation balloon of the syringe, and open the second tracheal cuff to dilate the stenosis of the esophageal mass. Instruct the patient to try drinking water to understand the dilation of the stenosis. Since the esophageal length of each patient is different, the depth of the tracheal cuff on the gastric tube can be adjusted up or down by repeatedly trying drinking water to achieve the best purpose of dilating the esophageal stenosis.

[0047] Example Two:

[0048] As Figure 7 shown in the figure, for patients after radical resection of esophageal cancer through three incisions in the neck, chest and abdomen, the application of this gastric tube can achieve the purpose of preventing anastomotic stenosis after esophageal cancer surgery. During the operation, the position of the anastomosis can be directly felt through the left neck incision. The position of the anastomosis is about 18 cm from the incisors. Select model D. The insertion depth from the nostril is 50 cm (the distance between the tracheal cuff and the end of the gastric tube is 24 cm + the tracheal cuff is 3 cm + 18 cm from the incisors + the extra distance of inserting the gastric tube through the nose compared with inserting the gastric tube from the incisors is 5 cm). At this time, the end of the first tracheal cuff should be exactly located at the anastomosis. Use the syringe to open the first and second tracheal cuffs through the inflation balloon. During the operation, feel the anastomosis to confirm the position and tension of the cuff. Due to the different esophageal lengths and anastomotic sites of patients, adjust the position of the tracheal cuff up or down.

[0049] Example Three:

[0050] As Figure 8 shown in the figure, for patients undergoing early esophageal cancer ESD (endoscopic submucosal dissection of esophageal tumors) surgery, placing this gastric tube can achieve the purpose of preventing esophageal stenosis caused by too large a range of esophageal mucosa resection after surgery. After selecting the corresponding model, insert the gastric tube through the nose normally. Under the guidance of gastroscopy, the insertion depth of the gastric tube can be directly adjusted. After determining that the position of the tracheal cuff is at the resected mucosa, directly open the tracheal cuff under direct vision of gastroscopy and make sure the tension of the tracheal cuff is appropriate.

[0051] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model.

Claims

1. A gastric tube with esophageal dilation function, characterized in that: include: tube(1); A tracheal cuff (2), the tracheal cuff (2) comprising a mounting portion (21) and an expansion portion (22), the mounting portion (21) being embedded in the tube wall of the tube body (1), the expansion portion (22) being communicated with the mounting portion (21) and extending to the outside of the tube body (1); An inflatable balloon (3), the inflatable balloon (3) comprising a connecting tube (31) and an inflating head (32), one end of the connecting tube (31) being connected to the tracheal cuff (2), and the other end being connected to the inflating head (32), the inflating head (32) being located outside the tube body (1).

2. The gastric tube with esophageal dilation function according to claim 1, characterized in that: The mounting portion (21) of the tracheal cuff (2) is annular, and the expansion portion (22) has a plurality of blades.

3. The gastric tube with esophageal dilation function according to claim 2, characterized in that: The expansion portion (22) on the inflatable balloon (3) has three blades, the angle between every two blades is 120 degrees, and the length of the blades along the radial direction of the tube body (1) is 3 cm.

4. The gastric tube with esophageal dilation function according to claim 3, characterized in that: There are two tracheal cuffs (2), which are tightly attached to each other and arranged at equal angles.

5. The gastric tube with esophageal dilation function according to claim 4, characterized in that: The tube body (1) has a proximal stomach end (11) and a distal stomach end (12), and the proximal stomach end (11) is fusiform.

6. The gastric tube with esophageal dilation function according to claim 5, characterized in that: The stomach-proximal end (11) is provided with an opening (4).

7. The gastric tube with esophageal dilation function according to claim 6, characterized in that: There are six openings (4) evenly distributed on both sides of the tube body (1).

8. The gastric tube with esophageal dilation function according to claim 7, characterized in that: The distal stomach end (12) is provided with a universal funnel connector (5).

9. The gastric tube with esophageal dilation function according to claim 8, characterized in that: It also comprises a metal guide wire, which is located inside the tube body (1).

10. The gastric tube with esophageal dilation function according to claim 9, characterized in that: The tube body (1) is provided with digital scales at intervals of 1 cm.

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