Stent and method for manufacturing same

Abstract

A stent and a method for manufacturing the stent are disclosed. A stent according to an embodiment of the present invention is manufactured by using a jig having a cylindrical body on which a plurality of pins (P) are arranged in the circumferential direction (X) and the lengthwise direction (Y). The stent has a cylindrical structure, in which a wire member forms a zigzag pattern woven in the circumferential direction (X) with a predetermined width through the pins on the jig and a plurality of zigzag patterns formed in the circumferential direction (X), intersecting with one another, are arranged in the lengthwise direction with predetermined intervals (W) therebetween, forming a mesh structure with a rhombus pattern. The cylindrical structure has a dual-pattern structure, in which a first crossing angle of an A-type rhombus pattern formed at the central portion in the lengthwise direction (Y) is greater than a second crossing angle of a B-type rhombus pattern formed at opposite end portions of the structure in the lengthwise direction (Y).

Description

technical field [0001] The present invention relates to a stent and a method for making the stent, and more specifically, to a stent and a method for making the stent which minimizes the shortening phenomenon when the organ cavity is deployed. Background technique [0002] Generally, when the lumen of tubular structures such as arteries or digestive tracts in the body becomes narrow, blood or food cannot flow smoothly, which reduces function. The reduction in function is not only a disease of the lumen, but also directly or indirectly affects the circulatory system. [0003] Accordingly, if a patient's lumen is found to be narrow in a medical institution, a so-called stent operation is performed, and a stent is inserted into the lesion to expand the narrowed channel and maintain the expanded state. [0004] Usually, the stent has a cylindrical mesh structure, which has elastic force, shrinks when external force is applied, and expands when the external force is released. I...

AI Technical Summary

Problems solved by technology

In particular, in conventional stents, in order to ensure expansion force, the crossing angle formed in the longitudinal direction Y is enlarged and the crossing angle formed in the circumferential direction X is reduced. Disadvantages of deployment position and difficult operation

[0009] In addition, once the stent is deployed, it cannot be moved, so if it is not placed accurately in the narrowed area, the function may be reduced or re-stenosis may occur, and in severe cases, there may be a problem of requiring reoperation

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