Endoprosthesis (300； 600) expandable by balloon for implantation in a lumen of a blood vessel, which has a wall design that is preferably expandable in some locations resulting in a predetermined expanded form of the stent, in which, in said predetermined expanded form, said stent (300, 600) comprises: a first stent segment (12) having a first cross-sectional area (A1) and a second stent segment (14) having a second area (A2) of cross-section and that are longitudinally offset from each other and each having a constant cross-sectional area, a third stent segment (16) configured to adopt a decreasing section configuration in an expanded state of the stent, a fourth stent segment (22) connecting the first stent segment (12) with the third stent segment (16), a fifth segment Stent number (24) connecting the third stent segment (16) with the second stent segment (14), wherein said fourth stent segment (22) is a divergent input segment configured to adopt a section configuration divergent and coextensive decreasing with the third and first stent segments (16 and 12)； and said fifth stent segment (24) is a divergent output segment configured to adopt a divergent and coextensive decreasing section configuration with the third and second stent segments (16 and 12) in the expanded state of the stent.Endoprótesis (300； 600) expandible por balón para su implantación en una luz de un vaso sanguíneo, que tiene un diseño de pared que es preferiblemente expandible en algunas ubicaciones dando como resultado una forma expandida predeterminada de la endoprótesis, en la que, en dicha forma expandida predeterminada, dicha endoprótesis (300, 600) comprende: un primer segmento (12) de endoprótesis que tiene una primera área (A1) de sección transversal y un segundo segmento (14) de endoprótesis que tiene una segunda área (A2) de sección transversal y que están longitudinalmente desviados uno con respecto al otro y que tienen cada uno un área de sección transversal constante, un tercer se
