A catheter that is operable between a folded configuration for storage and transport and an expanded configuration for draining fluid from a body by means of a conduit that extends axially in a longitudinal direction from a proximal end to an opposite distal end, the catheter comprising: - a proximal section (2), adapted to be completely inserted into a urinary canal of the body and constituting a proximal part of the duct, whose part extends axially between the proximal end and a first transition end (5) of the proximal section , and - a distal section (1), adapted to be, at least partially, inserted in the urinary canal and constituting a distal part of the duct, whose part extends axially between a second transition end (3) of the distal section and the distal end； the first transition end (5) being sized to allow its placement within a receiving portion of the distal part of the conduit to allow mutual axial displacement of the sections (1, 2) to operate the catheter between the folded configuration and the expanded configuration of the catheter, in which the sections (1, 2) comprise cooperating coupling structures to support the catheter in the expanded configuration, characterized in that the sections (1, 2) are arranged such that a first longitudinally directed force , required to move the catheter from the expanded configuration to the folded configuration is greater than a second longitudinally directed force, required to bend at least one of the proximal section (2) and the distal section (1).Un catéter que es operable entre una configuración plegada para guardar y transportar y una configuración expandida para drenar fluido desde un cuerpo por medio de un conducto que se extiende axialmente en una dirección longitudinal desde un extremo proximal hasta un extremo distal opuesto, comprendiendo el catéter: - una sección proximal (2), adaptada para ser completamente insertada en un canal urinario del cuerpo y que constituye una parte proximal del conducto, cu
