Expansion type esophagus supporting frame

Abstract

The utility model discloses an expansion type esophagus supporting frame which comprises an esophagus supporting frame body, an elastic support tube is arranged on the esophagus supporting frame body, the elastic support tube is in a hollow tube shape, the elastic support tube is in a transparent cylinder shape, an inner wall and an outer wall are arranged on the elastic support tube, and the outer wall of the elastic support tube is a high-elasticity latex layer. The two ends of the elastic support tube are respectively provided with an anti-skid expansion head, the elastic support tube and the anti-skid expansion heads are of an integrated structure, and two inflation holes are symmetrically formed in the end face of each anti-skid expansion head. The size of the esophagus supporting frame body can be large or small, expansion type positioning installation can be conveniently achieved after the esophagus supporting frame body is fed into the corresponding position in the esophagus, and displacement is not prone to occurring after long-time use.

Description

Technical Field

[0001] This utility model relates to the field of esophageal support technology, specifically an expandable esophageal support. Background Technology

[0002] Cancer is one of the top ten causes of death in China, with digestive tract cancers, including esophageal, stomach, and colorectal cancers, causing particularly high annual mortality rates. These cancers often cause digestive tract obstruction, affecting eating or bowel movements. In the past, when patients faced digestive tract obstruction and could not have the tumor removed surgically or by other methods, they would typically use a colostomy or gastrostomy to address their nutrition or bowel movement issues. The biggest problem with esophageal cancer is obstruction, but a gastrostomy still doesn't allow patients to eat orally. To allow patients to eat orally and satisfy their oral needs, esophageal stents to open up the obstruction began to be developed. Early esophageal stents were made of relatively rigid plastic, causing significant pain and numerous complications after placement, resulting in low patient acceptance. In recent years, due to advancements in medical materials, many alloy materials have begun to be used in medical treatment. Alloy metal stents are self-expanding, elastic, flexible, and highly shape-memory nickel-titanium alloy products. Their application in esophageal tumors has opened the door to the widespread use of low-pain, low-complication esophageal stents.

[0003] Esophageal stents are made of nickel-titanium shape memory alloy. Some stents are also covered with a silicone rubber film to seal the mesh of the bare stent. Proliferative lesions cannot enter the lumen through the mesh and will not cause restenosis. Most current esophageal stents are open-type esophageal stents. Such esophageal stents are sometimes unable to adapt to esophagi with larger diameters. Moreover, after prolonged use, the open esophageal stent will shift from its original installation position. Therefore, there is an urgent need for an improved technology to solve this problem in the existing technology. Utility Model Content

[0004] The purpose of this invention is to provide an expandable esophageal support frame that has a good contraction effect due to the outer and inner corrugated layers, allowing the esophageal support frame body to be of varying sizes, making it easy to insert into the corresponding position inside the esophagus for expansion-type positioning installation, and preventing displacement after long-term use, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an expandable esophageal support frame, comprising an esophageal support frame body, wherein an elastic support tube is provided on the esophageal support frame body, and the elastic support tube is a hollow tube.

[0006] Both ends of the elastic support tube are provided with anti-slip expansion heads. The elastic support tube and the anti-slip expansion heads are an integral structure. The end face of the anti-slip expansion head is symmetrically provided with two air holes.

[0007] Preferably, the elastic support tube is a transparent cylinder with an inner wall and an outer wall. The outer wall of the elastic support tube is a highly elastic latex layer. An air cavity is provided between the inner wall and the outer wall of the elastic support tube. The cross-sections of the inner wall and the outer wall of the elastic support tube are both pleated. A highly elastic titanium support mesh is provided in the inner wall interlayer of the elastic support tube. The highly elastic titanium support mesh is a rhomboid mesh.

[0008] Preferably, the anti-slip expansion head is provided with an outer corrugated layer and an inner corrugated layer, both of which are pleated. An air bladder is provided between the outer corrugated layer and the inner corrugated layer. The anti-slip expansion head and the elastic support tube are integrally structured. The air bladder in the interlayer of the anti-slip expansion head is connected to the air cavity in the center of the side wall of the elastic support tube. The outer wall of the anti-slip expansion head is provided with anti-slip protrusions.

[0009] Preferably, the diameter of the anti-slip expansion head is 1-2 mm larger than the diameter of the elastic support tube.

[0010] Preferably, the air inlet is provided with a one-way air nozzle, and the one-way air nozzle is sealed and fixedly connected to the air inlet.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] (1) A high-elasticity titanium support mesh is provided in the inner wall interlayer of the elastic support tube. The high-elasticity titanium support mesh is a rhomboid mesh, which has good shrinkage properties.

[0013] (2) The diameter of the anti-slip expansion head is 1-2 mm larger than the diameter of the elastic support tube. The pleated outer corrugated layer and inner corrugated layer on the anti-slip expansion head give the anti-slip expansion head good shrinkage. At the same time, the anti-slip protrusion on the outer wall of the anti-slip expansion head has a good anti-slip effect with the esophagus. After the esophageal support frame is installed, the esophageal support frame is not easy to shift between the esophagus and the esophagus.

[0014] (3) The one-way air nozzle not only inflates the inside of the esophageal support frame, but also the air hole can connect with the air tube while the esophageal support frame is installed, making it easy to send the esophageal support frame into the corresponding position of the human body.

[0015] (4) The esophageal support frame has a small body volume. The outer corrugated layer and the inner corrugated layer make the anti-slip expansion head have a good contraction effect, so that the body volume of the esophageal support frame can be large or small. It is easy to insert it into the corresponding position inside the esophagus to achieve expansion positioning installation. It is not easy to shift after long-term use. Attached Figure Description

[0016] Figure 1 This is a sectional view of the esophageal support frame of this utility model;

[0017] Figure 2 This is a cross-sectional view of the anti-slip expansion head of this utility model.

[0018] In the diagram: 1. Esophageal support frame body; 2. Elastic support tube; 3. High-elasticity titanium support mesh; 4. Inflatable air bladder; 5. Anti-slip expansion head; 6. Anti-slip protrusion; 7. Air inflator; 8. Outer corrugated layer; 9. Inner corrugated layer. Detailed Implementation

[0019] 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.

[0020] Please see Figure 1-2 This utility model provides a technical solution: an expandable esophageal support frame, including an esophageal support frame body 1, an elastic support tube 2 on the esophageal support frame body 1, the elastic support tube 2 being a hollow tube or a transparent cylinder, the elastic support tube 2 having an inner wall and an outer wall, the outer wall of the elastic support tube 2 being a highly elastic latex layer, an air cavity between the inner wall and the outer wall of the elastic support tube 2, the cross-section of both the inner wall and the outer wall of the elastic support tube 2 being pleated, and a highly elastic titanium support mesh 3 being provided in the inner wall interlayer of the elastic support tube 2, the highly elastic titanium support mesh 3 being a rhomboid mesh, the highly elastic titanium support mesh 3 being a rhomboid mesh having good shrinkage properties.

[0021] Both ends of the elastic support tube 2 are equipped with anti-slip expansion heads 5. The anti-slip expansion heads 5 are provided with an outer corrugated layer 8 and an inner corrugated layer 9. Both the outer corrugated layer 8 and the inner corrugated layer 9 are pleated. An air bladder is provided between the outer corrugated layer 8 and the inner corrugated layer 9. The anti-slip expansion head 5 and the elastic support tube 2 are an integral structure. The air bladder in the interlayer of the anti-slip expansion head 5 is connected to the air cavity in the center of the side wall of the elastic support tube 2. The outer wall of the anti-slip expansion head 5 is provided with an anti-slip protrusion 6. The diameter of the anti-slip expansion head 5 is 1-2 mm larger than the diameter of the elastic support tube 2. The pleated outer corrugated layer 8 and the inner corrugated layer 9 on the anti-slip expansion head 5 give the anti-slip expansion head 5 good contractility. At the same time, the anti-slip protrusion 6 on the outer wall of the anti-slip expansion head 5 has a good anti-slip effect with the esophagus. After the esophageal support frame is installed, the esophageal support frame is not easy to shift between itself and the esophagus.

[0022] The elastic support tube 2 and the anti-slip expansion head 5 are integrated into one structure. The end face of the anti-slip expansion head 5 is symmetrically provided with two air holes 7. The air holes 7 are provided with one-way air nozzles. The one-way air nozzles are sealed and fixedly connected to the air holes 7. The one-way air nozzles not only have the function of inflating the inside of the esophageal support frame body 1, but the air holes 7 can also connect with the air guide tube while the esophageal support frame is installed, so as to facilitate the insertion of the esophageal support frame body 1 into the corresponding position of the human body.

[0023] The esophageal support frame body 1 is small in size. The outer corrugated layer 8 and the inner corrugated layer 9 give the anti-slip expansion head 5 a good contraction effect, which makes the size of the esophageal support frame body 1 large or small. It is easy to insert it into the corresponding position inside the esophagus to achieve expansion positioning installation. It is not easy to shift after long-term use.

[0024] 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. An inflatable oesophageal stent comprising an oesophageal stent body (1) characterised in that: The esophageal support frame body (1) is provided with an elastic support tube (2), which is a hollow tubular structure. Both ends of the elastic support tube (2) are provided with anti-skid expansion heads (5), which are integrated with the elastic support tube (2). The end surface of the anti-skid expansion head (5) is symmetrically provided with two inflation holes (7).

2. An inflatable esophageal stent according to claim 1, characterized in that: The elastic support tube (2) is a transparent cylindrical structure, and is provided with an inner wall and an outer wall. The outer wall of the elastic support tube (2) is a high-elasticity latex layer. The inner wall and the outer wall of the elastic support tube (2) are provided with air cavities. The cross sections of the inner wall and the outer wall of the elastic support tube (2) are both corrugated. The inner wall of the elastic support tube (2) is provided with a high-elasticity titanium support net (3). The high-elasticity titanium support net (3) is a rhombic net.

3. An inflatable esophageal stent according to claim 1, characterized in that: The anti-skid expansion head (5) is provided with an outer corrugated layer (8) and an inner corrugated layer (9). Both the outer corrugated layer (8) and the inner corrugated layer (9) are corrugated. The anti-skid expansion head (5) is integrated with the elastic support tube (2). The air cavities in the anti-skid expansion head (5) are in communication with the air cavities in the side wall of the elastic support tube (2). The outer wall of the anti-skid expansion head (5) is provided with anti-skid protrusions (6).

4. An inflatable esophageal stent according to claim 1, characterized in that: The diameter of the anti-skid expansion head (5) is 1-2mm larger than the diameter of the elastic support tube (2).

5. An inflatable esophageal stent according to claim 1, characterized in that: The inflation hole (7) is provided with a one-way air nozzle, which is sealingly and fixedly connected with the inflation hole (7).

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