Intravascular indwelling stent

Abstract

Disclosed is an intravascular indwelling stent that include a stent main body and a polymer film covering the stent main body. Through-holes are formed in the polymer film. The through-holes connect an inside and an outside of a cylinder of the intravascular indwelling stent to each other and each have an opening size of 0.02 mm or more and 0.2 mm or less. An opening occupancy, which is the ratio of the opening area of all the through-holes included in a unit area of the outer surface of the polymer film to the unit area, is 25% or more and 41% or less. A surface density of boundary, which is the ratio of the length of opening edges of all the through-holes included in a unit area of the outer surface of the polymer film to the unit area, is 9.5/mm or more and 30/mm or less.

CPC Classifications