A blood flow regulator (100) for creating a shunt in the heart, comprising: a proximal element (101) having a general disk shape, defined by a braid of at least one wire extending around a central opening (103) of the proximal element； a distal element (102) having a general disk shape, defined by a braid of at least one wire that extends around a central opening (104) of the distal element； and a third element (105) defining an intermediate neck section between the proximal and distal elements and forming a cavity (106) having a diameter not larger than the diameter of each of the distal and proximal elements, in which said proximal element, said distal element and said third element are formed by the same braid of at least one wire, wherein said distal element comprises return loops (107) of said at least one wire that extend radially outwardly from a center (108) of the distal element and returning towards said center of said distal element, and characterized in that said braid is a braid of more than one wire, said proximal element comprises a connection element (109) configured to be grasped by a supply device, in which said connecting element is formed by a weld that has an at least partially spherical shape, and in which the opposite ends of each of d said more than one wire forming said distal element are fixed to said connecting element.Un regulador de flujo sanguíneo (100) para crear una derivación en el corazón, que comprende: un elemento proximal (101) que tiene una forma general de disco, definido por una trenza de al menos un alambre que se extiende alrededor de una abertura central (103) del elemento proximal； un elemento distal (102) que tiene una forma general de disco, definido por una trenza de al menos un alambre que se extiende alrededor de una abertura central (104) del elemento distal； y un tercer elemento (105) que define una sección de cuello intermedia entre los elementos proximal y distal y que forma una cavidad (106) que tiene un diámetro
