Provided is a stent of a novel structure with which deflection of a line-shaped body during expansion is prevented and a substantially uniform expansion is achieved over an entire length thereof, and with which, after implantation, stent fracture and damage of body tissue can be prevented by the stent exhibiting a superior pliability and conformability to a shape of a somatic lumen. A stent (10) having a cylindrical peripheral wall (12) formed with a line-shaped body (14) that extends in a helical form in a circumferential direction while reciprocating in an axial direction at a given amplitude. In the stent, connecting parts (22) are formed to link portions of the line-shaped body (14) that are adjacent in the axial direction, and a friable part (24) is provided to rupture itself by being implanted in the somatic lumen and release a link made by the connecting parts (22).
