A stent for ostial lesions and vascular bifurcations has a tubular body comprised by a succession of sections of skeletal members. In one or both end rows of the tubular body, there are expansive bending devices comprising sectional weakenings and open extremities. In the case of the end row, by a proper expander balloon, expansive bending of longitudinal branches of the end row may be produced. Bending is produced due to sectional weakenings. Open extremities allow producing the expansion in a way such as the flourishing of a flower bloom. Under such conditions, bending of the end row makes possible the adequate coverage of the ostial or bifurcation lesion affecting wall of the application vascular conduit.