A middle ear prosthetic device including: a columellate prosthesis, one end of which is connectable to the stapes or to its remaining footplate; an annular element of bioinert metal insertable into the auditory tube after suitable milling; an elastic elongated element of bioinert material, disposed transversely to the annular element, a first end of the elongated element being rigid with the annular element while its second end is free and to it there being connected the other end of the columellate prosthesis; for supporting the neotympanum, a tensostructure of wires of non-reabsorbable bioinert material fixed taut to the interior of the annular element to support the neotympanum, the distance between the wires being such as to provide the surgeon with a sufficient view of the surgical field, the elongated elastic element interfering with the tensostructure.