The elongated slits (3,4) in the body are limited by elongated limiting components (5). At least two limiting components adjacently arranged in the peripheral direction of the stent are extendingly formed over the ends of the elongated slits and form a unified detection component (6). The detection component in a peripheral direction of the stent has a greater width than each of the limiting components. Detection components are preferably provided in both ends of the stent and preferably form the two ends. The tubular body can be transferred from a compressed state with a first cross-section diameter into an expanded state with an enlarged second cross-section diameter.