Stent

A stent comprising a line-shaped body including a plurality of straight parts and a plurality of curved parts, the line-shaped body extending in a helical form in a circumferential direction while reciprocating in an axial direction by continuously alternating the plurality of straight parts and the plurality of curved parts, wherein:

• an entirety of the plurality of straight parts of the line-shaped body have a substantially constant thickness and width throughout the stent;
• the plurality of curved parts include:
• basic-thick curved parts that make up a largest number of the plurality of the curved parts in the stent and have a substantially constant width and thickness,
• a thickened curved part that is thicker than the basic-thick curved parts, and
• a thinned curved part that is thinner than the basic-thick curved parts;
• in a central portion of the stent along the axial direction, the plurality of straight parts have a roughly constant length dimension;
• in opposite end portions of the stent along the axial direction, the plurality of straight parts include a long straight part having a length that is longer than the roughly constant length dimension of the plurality of straight parts in the central portion of the stent, and the long straight part is connected to the thickened curved part;
• and
• in the opposite end portions of the stent, the plurality of straight parts include a short straight part having a length that is shorter than the roughly constant length dimension of the plurality of straight parts in the central portion of the stent, and the short straight part is connected to the thinned curved part.