Device for detachment of parietal thrombi from a body vessel with a catheter (2) along whose longitudinal extension of the catheter at least one catheter section is provided in whose assignable catheter wall (2 ') at least one hole is provided of wall (3) that crosses the catheter wall (2 ') completely transversely with respect to the longitudinal extent of the catheter, as well as with an element with which an external diameter of catheter assignable to the catheter section can be varied, characterized in that the catheter wall (2 ') is composed, at least along a catheter section, of an elastically deformable material, because the catheter (2) changes, by means of the element that causes an external force that acts on the catheter (2), from a state with a relatively smaller catheter outside diameter (d2) to a state with a relatively larger catheter outside diameter (d3) by way of a deformation elastic, the element being configured as a displacement body that can be introduced into the at least one section of the catheter and because, by suppressing the external force, the catheter (2) automatically recovers the state with the catheter outer diameter relatively more small (d2) thanks to the elastic restoring forces inherent in the material.Dispositivo para el desprendimiento de trombos parietales de un vaso corporal con un catéter (2) a lo largo de cuya extensión longitudinal del catéter se prevé al menos una sección de catéter en cuya pared de catéter (2') asignable se prevé al menos un orificio de pared (3) que atraviesa la pared de catéter (2') por completo transversalmente con respecto a la extensión longitudinal del catéter, así como con un elemento con el que se puede variar un diámetro exterior de catéter asignable a la sección de catéter, caracterizado por que la pared de catéter (2') se compone, al menos a lo largo de una sección de catéter, de un material elásticamente deformable, por que el catéter (2) cambia, por medio del elemento que causa una fuerza e
