A cylindrically-shaped element (4) of the present invention forming a luminal stent constituted of a cylindrical body comprises a strand (3) of a biodegradable polymer. The strand is repeatedly bent such that linear parts (3a) and bend parts (3b) alternate in sequence, and ends (3c, 3d) of the strand are connected together to form a cylindrical shape. Both ends (3c, 3d) of the strand constituting the cylindrically-shaped elements (4) are connected together by a cylindrical connecting member (5) of a biodegradable polymer holding both ends.