Fully-covered recoverable esophageal stent for promoting healing of anastomotic fistula

An anastomotic leakage and full-covering technology, which is applied in the field of fully-covered recyclable esophageal stents, can solve problems such as esophageal obstruction, esophageal damage, and skin damage, so as to promote tensile strength, prevent and scar formation, and reduce scars the formation of the effect

Pending Publication Date: 2022-02-01
CHONGQING UNIV CANCER HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing esophageal stent only has the function of expanding the blocked esophagus, and in the process of expanding the esophagus, the esophageal stent will inevitably cause damage to the inside of the esophagus and form a scar
Especially the esophageal stent that can be recovered will cause great damage to the inner skin of the esophagus, whether it is in the process of expanding the esophagus or in the process of recovery

Method used

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  • Fully-covered recoverable esophageal stent for promoting healing of anastomotic fistula
  • Fully-covered recoverable esophageal stent for promoting healing of anastomotic fistula

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The main structure of this embodiment, such as figure 1 , figure 2 As shown, it includes a thin-walled hollow grid support 1, both ends of the grid support 1 are enlarged structures, the edges of the expanded structure are provided with recovery lines 5, and the inner surface of the grid support 1 is attached with Corrosion-resistant inner membrane 2, the outer surface of the grid support 2 is covered with a corrosion-resistant outer membrane 3, and the surface of the outer membrane 3 is coated with a drug coating 4 that promotes tissue healing.

[0026] The specific implementation method is as follows: firstly, the length of the lesion is determined, and the grid stent 1 should cover the upper and lower sides of the lesion with a length of 2-3 cm, and the diameter is determined according to the degree of stenosis. Secondly, the grid support 1 should be placed smoothly as a whole, and should not form an angle or interfere with the tumor in the fundus of the stomach. ...

Embodiment 2

[0029] On the basis of the above-mentioned embodiments, this embodiment further defines the structure of the grid support, such as figure 1 , figure 2 As shown, the enlarged ends at both ends of the grid support 1 are bell-shaped or cup-shaped. Bell-mouth bracket: The bell-mouth is well adhered to the esophageal mucosa, which prevents displacement and has a light foreign body sensation. There are standard bell mouth brackets and small bell mouth brackets in the design. Small trumpet-mouth stents are less irritating to the esophageal mucosa. It is suitable for patients with high stenosis above the first thoracic vertebra and children with scar stenosis. The support force of the cup mouth bracket is relatively large, and it is 90 degrees to the main body of the bracket. It can be fitted with the narrow ring-shaped part of the anastomosis, effectively preventing slippage and displacement. It is suitable for patients with esophageal anastomotic stricture and prone to stent sl...

Embodiment 3

[0031] In this embodiment, on the basis of the above-mentioned embodiments, the drug coating 4 is further limited. The drug coating 4 is a nanoporous ceramic coating, and its material is a polymer formed by polymerization of one or several organic compounds. The polymers are methyl acrylate, polylactic acid, chondroitin sulfate, and phosphorylcholine. Nanoporous ceramic coating is an emerging stent coating technology in recent years. It has the advantages of good biocompatibility and strong mechanical stability. freed. Other parts of this embodiment are the same as those of the foregoing embodiment, and will not be repeated here.

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Abstract

The invention provides a fully-covered recoverable esophageal stent for promoting healing of anastomotic fistula. The fully-covered recoverable esophageal stent comprises a thin-wall hollow grid stent, wherein the two ends of the grid stent are both of an expansion structure, the edge of each expansion structure is provided with a recovery line, an anti-corrosion inner membrane is attached to the inner surface of the grid stent, the outer surface of the grid stent is coated with an anti-corrosion outer membrane, and the surface of the outer membrane is coated with a medicine coating layer for promoting tissue healing. According to the invention, a coating layer material is added to a recoverable esophageal stent, so that the characteristics and functions of the original esophageal stent are kept, the tensile strength of the skin wound inside the esophagus is promoted and the complete regeneration degree and continuity of the skin wound are improved by utilizing the medicine which is coated in the coating layer material and is used for accelerating the proliferation of the skin cells, the formation of scars is prevented and reduced, and the wound repairing quality is improved.

Description

technical field [0001] The invention relates to the technical field of medical equipment, in particular to a fully-covered recyclable esophagus support for promoting the healing of anastomotic leakage. Background technique [0002] Cancer is one of the top ten leading causes of death in China, and cancers of the digestive tract, including esophagus, stomach, and colorectal cancer, cause a high annual mortality rate. These cancers often cause a blockage in the digestive tract that prevents eating or defecation. In the past, when patients faced digestive tract obstruction and tumors could not be removed by surgery or other methods, enteral or gastrostomy was usually used to solve the patient's nutritional or defecation problems. [0003] The biggest problem of esophageal cancer is obstruction, but gastrostomy still cannot allow patients to eat by mouth. In order to allow patients to eat by mouth to satisfy their appetite, esophageal stents for propping up tumor obstructions ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/04A61F2/00A61L27/06A61L27/28A61L27/34A61L27/54
CPCA61F2/04A61F2/0077A61L27/34A61L27/28A61L27/06A61L27/54A61F2002/044A61F2002/0086A61L2300/414A61L2300/606A61L2430/22A61L2420/06
Inventor 王帅奇孙浩
Owner CHONGQING UNIV CANCER HOSPITAL
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