Abstract: A device, for disobstructing ateriosclerotic lesions in proximity to the origin of lateral branches or bifurcations of an artery. The device includes a stent having two sections. One section is adhered along approximately two thirds of its total length to a balloon. The other section corresponds to the final third of the length of the stent does not completely adhere to the balloon and is partially expanded before its use. A proximal end of a metallic guide wire passes through the mesh of the partially expanded section which has been previously introduced into a secondary branch or bifurcation in the artery. The wire provides an access to the secondary branch for introducing a second balloon or a second stent for the disobstruction of the secondary branch or bifurcation.