Gastric cavity occlusion catheter for gastrostomy

Abstract

The utility model discloses a kind of gastric cavity plugging catheters of gastrostomy in the medical instrument technical field, the device increases plugging balloon and sealing clamping piece, can be held by inside and outside, hold stomach wall and skin to position the device, while plugging balloon seals and isolates the puncture of stomach wall inside gastric cavity, effectively avoid gastric juice to flow out, avoid gastric juice to overflow along the puncture and cause skin burning;Positioning baffle is also increased, can be unfolded inside duodenum, positioning baffle can position nutrition tube, avoid nutrition tube to slide and separate, can also effectively block pylorus, effectively avoid enteric digestive juice to enter stomach, and do not hinder gastric juice to flow into intestine normally, and by pressure relief port and pressure relief pipe, stomach is conveniently decompressed, effectively avoid that pressure is too high and nutrition liquid is refluxed to esophagus.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a gastric cavity occlusion catheter for gastrostomy. Background Technology

[0002] Patients with malnutrition due to difficulty eating orally from various causes, but with normal gastrointestinal function and requiring long-term nutritional support, can receive nutrition through percutaneous gastrostomy. This procedure involves inserting a stoma into the stomach through the abdominal skin under endoscopic guidance to provide enteral nutrition or palliative gastrointestinal decompression. Its advantages include minimal invasiveness, suitability for local anesthesia, low cost, bedside accessibility, and simplified nursing procedures. It effectively improves the patient's quality of life and protects patients with esophageal damage by preventing food from passing through and causing further injury.

[0003] A gastrostomy tube can directly deliver nutritional solutions into the intestines, providing an effective means of long-term nutrition for patients unable to ingest food orally. It has a wide range of applications and is convenient for patients, especially suitable for: vegetative state patients; patients requiring esophageal cleanliness before and after head and neck tumor treatment; tracheotomy patients with respiratory dysfunction; patients with esophageal perforation or esophageal anastomotic leakage; patients with gastroparesis or gastrointestinal stasis after abdominal surgery; patients with severe pancreatitis, pancreatic cysts, or gastric emptying disorders; and patients who have undergone percutaneous gastrostomy, where the tube is inserted is a lifeline for many end-stage patients, potentially saving their lives.

[0004] Existing stoma tubes penetrate the skin and stomach wall to reach inside the stomach. Gastric juices can seep out through the gap between the stoma tube and the skin edge onto the abdominal skin. Gastric juice reflux can cause burns to the abdominal skin and, in severe cases, infection, posing a high risk to patients.

[0005] The opening of a gastrostomy tube is in the stomach cavity. For patients with gastric emptying disorders, the nutrient solution is injected into the stomach cavity through the gastrostomy tube, which will increase the pressure in the stomach cavity. The pressure in the stomach cavity will force the nutrient solution to reflux into the esophagus or even into the lungs. This will cause the patient to aspirate and repeatedly cause pneumonia or even suffocation.

[0006] Currently, some doctors extend the feeding tube and insert it into the duodenum through the pylorus. However, when the patient vomits or experiences increased abdominal pressure due to other reasons, the feeding tube can be forced back into the stomach, requiring another gastroscopy and re-insertion. In severe cases, multiple gastroscopy procedures may be needed daily, increasing patient discomfort. Furthermore, when the feeding tube is inserted through the pylorus from the stomach into the descending duodenum, the pylorus may not close completely. The alkaline digestive juices in the duodenum can reflux into the stomach, altering the gastric environment and causing symptoms such as indigestion. It can also lead to various adverse reactions caused by intestinal flora imbalance, further burdening the patient's condition.

[0007] Based on this, the present invention designs a gastric cavity occlusion catheter for gastrostomy to solve the above problems. Utility Model Content

[0008] The purpose of this invention is to provide a gastric occlusion catheter for gastrostomy. This device adds an occlusion balloon and a sealing clip, which can be used to position the device by supporting the stomach wall and skin from both inside and outside. The occlusion balloon is inside the stomach cavity, while the sealing clip seals and blocks gastric juices on the abdominal skin, effectively preventing gastric juices from flowing out. A positioning baffle is also added, which can be deployed inside the duodenum to effectively block the pylorus, effectively preventing intestinal digestive juices from entering the stomach, while not obstructing the normal flow of gastric juices into the intestines. Furthermore, the pressure relief port and pressure relief tube facilitate the decompression of the stomach, effectively preventing the reflux of nutrient solution into the esophagus.

[0009] This invention is achieved as follows: a gastric cavity occlusion catheter for gastrostomy, comprising:

[0010] Occlusion balloon, decompression sleeve, positioning baffle, feeding tube;

[0011] The pressure relief sleeve is a straight tube open at both ends, and the nutrition tube is also a flexible long tube open at both ends. The nutrition tube is slidably inserted into the inside of the pressure relief sleeve, and the two ends of the nutrition tube extend out of the front and rear ends of the pressure relief sleeve, respectively. Multiple pressure relief ports are opened on the outer wall of the pressure relief sleeve. A pressure relief pipe is also sealed and connected to the rear end of the pressure relief sleeve. The inside of the pressure relief sleeve is a closed cavity. The pressure relief pipe and each pressure relief port are sealed and connected through the internal cavity of the pressure relief sleeve.

[0012] The occlusion balloon is a closed annular balloon, which is fixedly sleeved on the outer wall of the pressure relief sleeve. The pressure relief sleeve is not connected to the occlusion balloon. A sealing clip is also circumferentially arranged on the outer wall of the pressure relief sleeve. The sealing clip is a rigid annular plate structure. The sealing clip is fixed to the rear end of the occlusion balloon. The rear end of the balloon's endotracheal tube is also sealed and connected to the inflation tube. The rear end of the inflation tube extends outside the rear end of the pressure relief sleeve.

[0013] The positioning baffle is an annular sheet-shaped airbag. The positioning baffle is fixed on the outer wall of the feeding tube. The positioning baffle is also connected to an inflation tube. The inner cavity of the positioning baffle is sealed and connected to the inflation tube. The inflation tube is fixed on the outer wall of the feeding tube. The inflation tube slides inside the pressure relief sleeve, and the rear end of the pressure relief sleeve extends outside the rear end of the pressure relief sleeve.

[0014] The positioning baffle has multiple flow guide holes, each of which is isolated and sealed from the inner cavity of the positioning baffle. The flow guide holes penetrate the front and rear sides of the positioning baffle, and each of the flow guide holes is equipped with a one-way valve that opens to the front end.

[0015] Furthermore, the feeding tube is a flexible long tube made of medical PVC, the pressure relief sleeve is a flexible silicone straight tube, and the rear end of the pressure relief sleeve is sealed with plastic putty.

[0016] The pressure relief sleeve and the feeding tube are overfitted.

[0017] The distance between the front end of the nutrient tube and the positioning baffle shall not exceed 10mm.

[0018] Furthermore, the sealing clip is a rigid annular PVC sheet structure;

[0019] The distance between the occlusion balloon and the pressure relief sleeve shall not exceed 10 mm.

[0020] Furthermore, a sealing plug is also installed at the rear end of the inflation tube, and the sealing plug is located outside the rear end of the pressure relief sleeve.

[0021] Furthermore, a sealing cap is provided at the rear end of the gas injection tube.

[0022] The beneficial effects of this utility model are: 1. This utility model adds a blocking balloon and a sealing clip. The blocking balloon is in the stomach cavity, and the sealing clip is attached to the outer wall of the abdominal skin. It clamps the stomach wall and the skin from both inside and outside. The blocking balloon blocks and seals the gap in the stomach cavity, and the sealing clip is positioned to effectively prevent gastric juice from overflowing outward along the perforation, thereby preventing gastric juice from corroding the skin.

[0023] 2. The feeding tube and pressure relief sleeve of this device can be slidably adjusted, so that the feeding tube can be inserted to different depths to adjust to the actual needs of the patient's vital signs. It can ensure that the positioning baffle can be adjusted into the duodenum for sealing, preventing intestinal digestive juices from entering the stomach. It can also position the feeding tube inserted into the intestine, so that the feeding tube is always in the intestine, providing the patient with continuous nutrition. Digestive juices from the stomach can also flow into the intestine through the drainage hole, with only single-direction blocking.

[0024] 3. The pressure relief sleeve of this device is also equipped with a pressure relief port, which can relieve the pressure in the stomach cavity through the pressure relief port and the pressure relief tube, effectively preventing the reflux of gastric fluid back into the esophagus and protecting the patient's esophagus and lungs. Attached Figure Description

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] Figure 1 This is a schematic diagram of the overall external structure of this utility model;

[0027] Figure 2 This is a schematic diagram of the internal pipe assembly structure of this utility model;

[0028] Figure 3 This is a top view of the sealing clip structure of this utility model;

[0029] Figure 4 This is a schematic diagram of the positioning baffle structure of this utility model.

[0030] The attached diagram lists the components represented by each number as follows:

[0031] 1-Occlusion balloon, 11-Sealing clip, 12-Inflation tube, 13-Sealing cap, 2-Pressure relief sleeve, 21-Pressure relief pipe, 22-Pressure relief port, 23-Pressure relief valve, 3-Positioning baffle, 31-Inflation tube, 32-Drainage hole, 33-Sealing plug, 4-Nutrition tube. Detailed Implementation

[0032] Please see Figures 1 to 4 As shown, this utility model provides a gastric cavity occlusion catheter for gastrostomy. To better understand the above technical solution, the following will describe the above technical solution in detail with reference to the accompanying drawings and specific embodiments.

[0033] In a specific embodiment of the technical solution of this utility model:

[0034] Includes 1 occlusion balloon, 2 pressure relief sleeve, 3 positioning baffle, and 4 feeding tube;

[0035] The pressure relief sleeve 2 is a straight pipe with open ends, and the nutrition tube 4 is also a flexible long pipe with open ends. The nutrition tube 4 is slidably inserted into the pressure relief sleeve 2, and the two ends of the nutrition tube 4 extend out of the front and rear ends of the pressure relief sleeve 2 respectively. Multiple pressure relief ports 22 are opened on the outer wall of the pressure relief sleeve 2. A pressure relief pipe 21 is also sealed and connected to the rear end of the pressure relief sleeve 2. The inside of the pressure relief sleeve 2 is a closed cavity. Each pressure relief port 22 is connected to the internal cavity of the pressure relief sleeve 2. The pressure relief pipe 21 is also sealed and connected to the internal cavity of the pressure relief sleeve 2. The pressure relief pipe 21 and each pressure relief port 22 are sealed and connected through the internal cavity of the pressure relief sleeve 2.

[0036] The feeding tube 4 is a flexible long tube made of medical PVC. The feeding tube 4 is a flexible silicone straight tube. The rear end of the pressure relief sleeve 2 is also sealed with plastic putty. The rear end opening of the pressure relief sleeve 2 is sealed with sealing plastic putty, which can be silicone putty, to seal the outer end of the pressure relief sleeve 2 to ensure the airtightness of the pressure relief sleeve 2 and prevent gastric juice from overflowing outward through the inside of the pressure relief sleeve 2. Alternatively, cotton can be stuffed in for protection and water absorption, as long as gastric juice does not come into direct contact with the skin.

[0037] The pressure relief sleeve 2 and the feeding tube 4 are fitted together to ensure a tight seal. The pressure is released through the pressure relief port 22 to maintain the balance of internal and external air pressure, so as not to spray or squeeze gastric juice out of the stomach and keep the stomach stable.

[0038] The distance between the front end of the feeding tube 4 and the positioning baffle 3 should not exceed 10mm, ensuring that the positioning baffle 3 can be stretched open inside the intestine and that the feeding tube 4 is securely positioned to prevent it from slipping out of the intestine. If the feeding tube 4 extends too far beyond the front end of the positioning baffle 3, it may irritate the intestine.

[0039] The rear end of the pressure relief sleeve 2 should not extend more than 10mm beyond the sealing clip 11 to avoid it extending too far and accidentally getting caught or dragged by other items.

[0040] The occlusion balloon 1 is a closed annular balloon, which is fixedly sleeved on the outer wall of the pressure relief sleeve 2. The pressure relief sleeve 2 is not connected to the occlusion balloon 1. A sealing clip 11 is also circumferentially arranged on the outer wall of the pressure relief sleeve 2. The sealing clip 11 is a rigid annular sheet structure. The sealing clip 11 is fixed to the rear end of the occlusion balloon 1. The rear end of the balloon tubing 1 is also sealed and connected to the inflation tube 12. The rear end of the inflation tube 12 extends outside the rear end of the pressure relief sleeve 2. The sealing clip 11 is a rigid annular PVC sheet structure. A sealing cap 13 is also provided at the rear end of the inflation tube 12. The sealing cap 13 at the rear end of the inflation tube 12 can be a screw cap, as long as it can ensure that the inflation tube 12 is sealed.

[0041] The distance between the occlusion balloon 1 and the pressure relief cannula 2 does not exceed 10mm. The occlusion balloon 1 and the pressure relief cannula 2 clamp and seal the gastric opening and the skin to prevent gastric fluid leakage. By inflating the occlusion balloon 1 with different amounts of gas, balloons of different sizes can be generated, which can form different clamping distances on the sealing clip 11, thereby providing different clamping states for patients. Generally, the design distance is such that as long as the occlusion balloon 1 is fully inflated, it can stably clamp the skin and gastric wall thickness of all patients.

[0042] The positioning baffle 3 is an annular sheet-shaped air bladder. The positioning baffle 3 is fixed on the outer wall of the feeding tube 4. The positioning baffle 3 is also connected to the inflation tube 31. The inner cavity of the positioning baffle 3 is sealed and connected to the inflation tube 31. The rear end of the inflation tube 31 is equipped with a Luer connector, which can be sealed tightly and can also be easily connected to a syringe or other inflation and deflation devices.

[0043] The inflation tube 31 is fixedly installed on the outer wall of the nutrient tube 4. The inflation tube 31 is slidably installed inside the pressure relief sleeve 2, and the rear end of the pressure relief sleeve 2 extends out of the rear end of the pressure relief sleeve 2. The rear end of the inflation tube 31 is also sealed with a sealing plug 33. The sealing plug 33 can be a sealing plug that is inserted and closed by a Luer connector. The sealing plug 33 is located outside the rear end of the pressure relief sleeve 2.

[0044] Multiple flow guide holes 32 are provided on the positioning baffle 3. Each flow guide hole 32 is isolated and sealed from the inner cavity of the positioning baffle 3. The flow guide hole 32 penetrates the front and rear sides of the positioning baffle 3. Each flow guide hole 32 is equipped with a one-way valve that opens to the front, which allows gastric fluid to flow into the intestine, but digestive juice and nutrient juice in the duodenum cannot flow back into the stomach cavity. This one-way valve can be a simple rubber valve plate, similar to an inflatable life ring. When the pressure in the stomach cavity is high, it can flow into the intestine, and the valve plate will be opened by pressure. When the pressure in the intestine is high, it will press the valve plate tightly and close. It is a conventional structure, and the one-way valve structure will not be described in detail.

[0045] When using this utility model, the pressure relief valve 23, the sealing plug 33, and the sealing cap 13 of the air injection pipe 12 are all opened, and then the matching length of the nutrition pipe 4 and the pressure relief sleeve 2 is adjusted.

[0046] Next, insert the pressure relief sleeve 2, which holds the feeding tube 4, through the skin into the patient's stomach. Adjust the feeding tube 4 and insert the positioning baffle 3 into the duodenum. Place the sealing clip 11 onto the patient's abdominal skin, ensuring that the sealing clip 11 seals the puncture site. Then, begin inflating the inflation tube 31 to open the positioning baffle. Pull the positioning baffle 3 to make it abut against the pylorus, ensuring that the pylorus is closed by the positioning baffle 3.

[0047] Then inflate the inflation tube 12 to expand the occlusion balloon 1, and seal the inside of the stomach cavity at the puncture site, resealing the stomach. Ensure that the occlusion balloon 1 and the sealing clip 11 clamp the stomach cavity and abdomen from both inside and outside, keeping the pressure relief cannula 2 stable. Then close the pressure relief valve 23, the sealing plug 33, and the sealing cap 13 of the inflation tube 12. Finally, stuff cotton into the port of the pressure relief cannula 2 that extends outside the body, and then use silicone plastic to firmly seal the outer port of the pressure relief cannula 2.

[0048] When the pressure in the stomach is too high, or when the pressure relief valve 23 is opened at intervals, the pressure in the stomach can be released.

[0049] Furthermore, the feeding tube 4 allows for convenient direct injection of nutrient solution into the intestines, effectively protecting the esophagus and respiratory tract, and also meeting the stomach's need for empty space.

[0050] The front end of this device refers to the end that extends into the patient's body, and the rear end refers to the end that extends out of the patient's body for easy hand operation. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings and is only for the purpose of describing this utility model and simplifying the description. It is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0051] While specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and not intended to limit the scope of the present invention. Equivalent modifications and variations made by those skilled in the art in accordance with the spirit of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A gastric cavity occlusion catheter for gastrostomy, characterized in that, include: Occlusion balloon (1), decompression sleeve (2), positioning baffle (3), feeding tube (4); The pressure relief sleeve (2) is a straight tube with open ends, and the nutrition tube (4) is also a flexible long tube with open ends. The nutrition tube (4) is slidably inserted into the pressure relief sleeve (2), and the two ends of the nutrition tube (4) extend out of the front and rear ends of the pressure relief sleeve (2). Multiple pressure relief ports (22) are opened on the outer wall of the pressure relief sleeve (2). A pressure relief pipe (21) is also sealed and connected to the rear end of the pressure relief sleeve (2). The inside of the pressure relief sleeve (2) is a closed cavity. The pressure relief pipe (21) and each pressure relief port (22) are sealed and connected through the internal cavity of the pressure relief sleeve (2). The occlusion balloon (1) is a closed annular balloon. The occlusion balloon (1) is fixedly sleeved on the outer wall of the pressure relief sleeve (2). The pressure relief sleeve (2) is not connected to the occlusion balloon (1). A sealing clip (11) is also arranged around the outer wall of the pressure relief sleeve (2). The sealing clip (11) is a hard annular sheet structure. The sealing clip (11) is fixed at the rear end of the occlusion balloon (1). The rear end of the occlusion balloon (1) is also sealed and connected to the air injection tube (12). The rear end of the air injection tube (12) extends outside the rear end of the pressure relief sleeve (2). The positioning baffle (3) is an annular sheet-shaped airbag. The positioning baffle (3) is fixedly arranged on the outer wall of the nutrition tube (4). An inflation tube (31) is also connected to the positioning baffle (3). The inner cavity of the positioning baffle (3) is sealed and connected to the inflation tube (31). The inflation tube (31) is fixedly arranged on the outer wall of the nutrition tube (4). The inflation tube (31) is slidably arranged inside the pressure relief sleeve (2), and the rear end of the pressure relief sleeve (2) extends out of the rear end of the pressure relief sleeve (2). The positioning baffle (3) has multiple guide holes (32), each of which is isolated and sealed from the inner cavity of the positioning baffle (3). The guide holes (32) penetrate the front and rear sides of the positioning baffle (3), and each of the guide holes (32) is equipped with a one-way valve that opens to the front end.

2. The gastric cavity occlusion catheter for gastrostomy according to claim 1, characterized in that: The feeding tube (4) is a flexible long tube made of medical PVC, the pressure relief sleeve (2) is a flexible silicone straight tube, and the rear end of the pressure relief sleeve (2) is also sealed with plastic putty. The pressure relief sleeve (2) and the feeding tube (4) are overfitted; The distance between the front end of the nutrient tube (4) and the positioning baffle (3) shall not exceed 10 mm.

3. The gastric cavity occlusion catheter for gastrostomy according to claim 1, characterized in that: The sealing clip (11) is a rigid annular PVC sheet structure; The distance between the occlusion balloon (1) and the pressure relief sleeve (2) shall not exceed 10 mm.

4. The gastric cavity occlusion catheter for gastrostomy according to claim 1, characterized in that: The rear end of the inflation tube (31) is also sealed with a sealing plug (33), which is located outside the rear end of the pressure relief sleeve (2).

5. The gastric cavity occlusion catheter for gastrostomy according to claim 1, characterized in that: A sealing cap (13) is also provided at the rear end of the gas injection pipe (12).

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