Drug-injectable anti-shift esophageal stent

Abstract

The invention relates to a drug-injectable anti-shift esophageal stent which comprises an esophageal bracket body and a liner membrane. The drug-injectable anti-shift esophageal stent further comprises a drug injection device for injecting a drug into the esophagus; the esophageal stent body comprises a plurality of bracket units which are connected through suture lines and closed skirt membranes; the liner membrane is located in the esophageal stent body, the lower end edge of the liner membrane extends outward radially to form an annular bottom membrane, and an annular drug storage chamber is formed between the liner membrane and the inner wall of the esophagus; the drug-injection device is separately connected to the upper end edges of the liner membrane and the esophageal stent body and communicates with the drug storage chamber. The drug-injectable anti-shift esophageal stent provided by the invention can effectively solve the problem of shift of the esophageal stent and also can directly inject the drug into the diseased region of the esophagus through the drug injection device.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an injectable anti-displacement esophageal stent. Background technique [0002] At present, esophageal stents are widely used in both benign and malignant esophageal strictures. As far as benign esophageal strictures are concerned, with the popularity of esophageal endoscopic submucosal dissection and endoscopic mucosal resection, the postoperative benign stricture rate increases with the lesion rate. The range increases and rises. The covered stent is one of the most important methods to prevent strictures, but the displacement of the esophageal stent is the most common complication. The displacement of the esophageal stent to the colon will cause intestinal perforation, and surgery is often required It was taken out, which greatly affected the use and popularization of esophageal stents. At present, some anti-displacement esophageal stents have also appeared on the mar...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an injectable anti-displacement esophageal stent, which is used to solve the problems that the existing esophageal stent cannot avoid the displacement of the esophagus stent and does not have the function of injecting medicine to the esophagus lesion.

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