Retrievable vascular stent based on origami mechanism

Abstract

The invention provides a retrievable blood vessel stent based on an origami mechanism, comprising: a stent assembly; a plurality of the stent assemblies are sequentially connected to form an annular stent for supporting a blood vessel; the annular stent includes a first state of expansion and a second state of contraction state; wherein, the two adjacent bracket assemblies are folded around the connection between each other, so as to realize the contraction of the annular bracket in the second state. The invention provides a retrievable vascular stent based on an origami mechanism. By proposing a stent structure based on the design of the origami mechanism, a large volume change can be achieved, and at the same time, it is small and light, without scattered parts, and the integrated structure makes mechanical deformation reliable. High performance, and the scaffold based on the origami mechanism can be processed on a plane during the preparation process, which is simpler and faster than the traditional complete process of three-dimensional milling, etching and heat treatment.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a retrievable blood vessel stent based on an origami mechanism. Background technique [0002] Vascular stents are widely used in medical treatment. For example, stents are implanted in specific locations in the human body during lesions to support narrowed and occluded blood vessels, reduce elastic recoil and reshape of blood vessels, and maintain smooth blood flow in the lumen. Some stents also have the effect of preventing vascular restenosis. At present, the general form of vascular stent placement surgery is to use catheter delivery. The main process is to make the catheter enter the human body along the human blood vessel, and after reaching a specific position, the stent is sent along the catheter to the specified position, and then the stent is self-expanding or After the balloon is expanded to a certain diameter, it sticks to the inner wall of the blood vessel an...

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