A description is given of a domed cap (100) for the enlargement of an atrophied bladder (200), in biocompatible and absorbable material including a textile (1) made with yarns or with monofilaments deriving from PGA fibers, characterized in that the textile (1) is supported by a star-shaped frame with domed profile, formed by a plurality of radial strips (3) manufactured by injection of a PGA/PLA copolymer, the cap (100) being suitable for growing thereon autologous fibrous capsule cells, generated by the process of tissue reconstruction, after its insertion inside the patient.
