Patent ID: 8882824

Claim:
An expanding vascular stent comprising: a body that is hollow in the lengthwise direction, including a plurality of cells joined together, wherein each of the plurality of cells includes at least two or more parts whose body is curved numerous times and whose one side is opened, in which both ends of the parts are extended with a curved portion, the curved portions being curved in the same direction; and wherein each of the plurality of cells comprises: a first part having a plurality of curved portions, the first part being symmetrically formed with respect to a virtual axis that extends along the lengthwise direction of the stent, and open on one side; a second part having a plurality of curved portions, wherein the second part is joined to the first part, one end of the second part is symmetrically formed to the other end of the second part with respect to the virtual axis located through a center of the second part that extends along the lengthwise direction of the stent, and the second part is open on one side; and a third part symmetrically formed to the first part, the third part is a mirror image of the first part around the virtual axis located through the center of the second part, the third part being joined to the second part; wherein the second part of the cell comprises a first unit having at least four curved portions, located at a first side of the second part, and a second unit at a second side of the second part, in which the first unit is symmetrically joined to the second unit with respect to the virtual axis through the center of the second part that extends along the lengthwise direction of the stent.