Esophageal radiotherapy stent and preparation method thereof

Abstract

The invention belongs to the technical field of medical instruments, and particularly relates to an esophageal radiotherapy stent and a preparation method thereof. The esophageal radiotherapy stent comprises a stent body, a first protective layer, a second protective layer and a medicine carrying layer, wherein the stent body is used for supporting esophagus, and the first protective layer is arranged on the periphery of the stent body; the second protective layer is arranged at the periphery of the first protective layer; the medicine carrying layer is arranged at the periphery of the second protective layer, and is used for carrying medicines and controlling the release of the medicines; and the second protective layer is used for bonding the first protective layer and the medicine carrying layer. The esophageal radiotherapy stent is firm in structure, not liable to fall off, high in stability and capable of preventing esophageal restenosis.

Description

technical field [0001] The invention belongs to the technical field of medical devices, in particular to an esophageal radiotherapy bracket and a preparation method thereof. Background technique [0002] If the human esophagus has tumor or canceration, it will cause esophageal blockage and affect the patient's swallowing of food. With the wide application of esophageal stents in clinical practice, the esophagus can be stretched through the esophagus stent to expand the lumen diameter of the diseased esophagus to facilitate the passage of food. However, the currently widely used esophageal stents are of single rigidity, because there is a significant difference between the stiffness and the stiffness of the tumor tissue and healthy tissue in the area covered by the stent, which will cause discomfort after stent implantation and lead to soft tissue hyperplasia at both ends of the stent. Many medical problems such as restenosis further affect the service life of the stent. C...

AI Technical Summary

Problems solved by technology

However, the currently widely used esophageal stents are of single rigidity, because there is a significant difference between the stiffness and the stiffness of the tumor tissue and healthy tissue in the area covered by the stent, which will cause discomfort after stent implantation and lead to soft tissue hyperplasia at both ends of the stent. Many medical problems such as restenosis further affect the service life of the stent

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