Endoprosthesis

Abstract

The present invention is to provide an endoprosthesis, generally called a stent, that is designed to be firmly fixed into patient's body lumen regardless of the change of configuration of a body lumen such as an airway, thereby improving its stability and increasing its durability by flexibly and increasing its durability by flexibly corresponding to the operating state of the body lumen such as the airway.

Description

technical field [0001] The present invention relates to an endoprosthesis, commonly referred to as a stent, in particular, which is designed to be securely fixed in a body cavity of a patient regardless of the shape of the body cavity such as the airway The active state of the body cavity, such as the airway, remains consistent to enhance the stability of the stent and increase its durability. Background technique [0002] In general, body cavity stenosis such as airway stenosis is often divided into luminal obstruction, external compression and malacia according to the anatomically damaged part. Endoprostheses, ie stents used to dilate narrowed body cavity passages such as airways, have been used to treat patients with dyspnea due to external compression and narrowing of the airways in malacia. [0003] Stents of this type usually have a cylindrical structure and are made of metal and / or silicone rubber mesh. In general, self-expandable stents have been widely used, which...

AI Technical Summary

Problems solved by technology

The non-folded part of the stent resists the changing force of the airway configuration, and thus bears huge pressure, which makes the stent easy to break

Correspondingly, the durability of the bracket is greatly reduced

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