To provide a stent for enabling injuries to the wall of a lumen to be reduced a stent 10 in the shape of a mesh is placed and used inside a lumen such as a blood vessel of the human body where the mesh is formed of a single or plurality of pieces of wire material 11 having elasticity and the wire material 11 bends in the shape of a curve without being folded in end portions 10A 10B of the stent 10 and is formed in the shape of a cylinder.
