Stent and Method for Manufacturing the Same

Abstract

A method of manufacturing a stent includes forming a first cylindrical mesh structure by bending a first member in a zigzag-shape having peaks and valleys and a plurality of turns wound around an outer circumference of a manufacturing frame and forming a second cylindrical mesh structure by bending a second member in a zigzag-shape having peaks and valleys and a plurality of turns wound around an outer circumference of a manufacturing frame, wherein a bending track the second member crosses a bending track of the first member.

Description

TECHNICAL FIELD[0001]The present invention relates to a stent and a method for manufacturing the same, and more particularly, to the stent that is improved in a quality by preventing the damage of a material thereof during a manufacturing process and a method for manufacturing the stent.BACKGROUND ART[0002]Generally, a stent may be inserted into a lumen of a human body, or into a lesion of a blood vessel in order to maintain a passageway of the lumen, or the blood vessel. The stent may be formed of a shape memory alloy such as nitinol maintaining a uniform expansion force at a temperature of the lumen. The stent may be formed in a cylindrical shape woven by wires, and the cylindrical stent may be formed of two thin long members successively woven repeatedly in order to have a good expansion force (elastic force) in a radial direction. That is, a plurality of pins are disposed on a cylindrical manufacturing frame. Distances between the pins are same as each other. The two thin, long ...

AI Technical Summary

Benefits of technology

"The present invention relates to a stent and a method of manufacturing the stent. The technical effects of the invention include preventing damage to the stent during manufacturing processes, improving the quality of the stent, and reducing pain during the manufacturing process. The stent is designed to maintain its elastic force in a radial direction and can easily be inserted into or removed from a lesion. The method of manufacturing the stent includes forming a cylindrical mesh structure by bending a wire member in a zigzag-shape and interlocking the peaks and valleys of different turns. The stent is then formed by spirally twisting the wire member and forming struts by crossing and interlocking the peaks and valleys of different turns. The invention aims to provide a stent that is easy to insert, reduces pain, and maintains its quality during manufacturing."

Problems solved by technology

However, during one wire member is woven, the other wire member is left twisted or waved.

Therefore, the wire members may be damaged during the above-described process, thereby being reduced in their elastic force and thus deteriorating the quality of the product.

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