Highly flexible stent

Abstract

A stent includes wavy-line pattern bodies having a wavy-line pattern and arranged side-by-side in an axial direction LD, and coiled elements arranged between the wavy-line pattern bodies adjacent and extending in a spiral manner around an axis. All apices on opposite sides of the wavy-line pattern of the wavy-line pattern bodies that are adjacent are connected by way of the coiled element. When viewing in a radial direction RD, a circular direction CD of the wavy-line pattern bodies is inclined with respect to the radial direction RD, and a winding direction of one of the coiled elements located at one side in the axial direction LD with respect to the wavy-line pattern bodies and a winding direction of one other of the coiled elements located at the other side in the axial direction LD are opposite.

1 . A highly flexible stent comprising:
 a plurality of wavy-line pattern bodies having a wavy-line pattern and arranged side-by-side in an axial direction; and   a plurality of coiled elements arranged between the wavy-line pattern bodies that are adjacent and extending in a spiral manner around an axis,   wherein all apices on opposite sides of the wavy-line pattern of the wavy-line pattern bodies that are adjacent are connected by way of the coiled elements,   wherein, when viewing in a radial direction perpendicular to the axial direction, a circular direction of the wavy-line pattern bodies is inclined with respect to the radial direction, and   wherein a winding direction of one of the coiled elements located at one side in the axial direction with respect to the wavy-line pattern bodies and a winding direction of one other of the coiled elements located at the other side in the axial direction are opposite.   
     
     
         2 . The highly flexible stent according to  claim 1 , wherein
 an angle at which the circular direction of the wavy-line pattern bodies inclines with respect to the radial direction is 30° to 60°.   
     
     
         3 . The highly flexible stent according to  claim 1 ,
 wherein the wavy-line pattern bodies form a circular body by connecting, in a circumferential direction, a plurality of waveform elements of substantially V-shape made by coupling two leg portions at an apex, and   wherein the length of the one of the coiled elements is longer than the length of the leg portion and the length of the one other of the coiled elements is shorter than the length of the leg portion.   
     
     
         4 . The highly flexible stent according to  claim 3 , wherein
 the length of the one of the coiled elements is no more than 1.5 times the length of the leg portion.   
     
     
         5 . The highly flexible stent according to  claim 1 , wherein
 the wavy-line pattern bodies are non-continuous in a circumferential direction and do not form a circular body, and have a shape in which one or a plurality of struts that constitutes the wavy-line pattern bodies is omitted, as compared with the wavy-line pattern bodies that form a circular body.   
     
     
         6 . The highly flexible stent according to  claim 1 , wherein
 a cross sectional shape is a substantially triangular shape.