Abstract: The invention provides a prosthetic device for introduction into a duct and for lining an interior wall portion of the duct. The device comprises a generally toroidal, hollow, inflatable sleeve and means for introducing a pressurized fluid into the sleeve. The sleeve is made of a material that is impermeable to the pressurized fluid. At least the outer portion of the sleeve is made of a flexible material capable of deforming to conform to the shape of said interior wall portion of the duct. The device can be introduced into the duct and correctly positioned when it is in a deflated state. Subsequently, it is inflated by introducing the pressurized fluid. This causes the outer portion of the sleeve to expand and grip said interior wall portion of the duct, while leaving a central channel for the passage of the liquid in the duct. The device may also comprise a plurality of such sleeves connected together in a side-by-side relationship.

Abstract: The present invention relates to an artificial bladder. It is characterized in that it comprises a leak-proof enclosure wall, which internally forms a closed cavity accessible through two upper apertures and through one lower aperture, means for connecting each of the upper apertures to a ureter, means for connecting the lower aperture to the urethra, a small balloon made of leak-proof, flexible material, which is positioned inside the said cavity and forms a closed space internally, means for introducing a fluid at will into the said small balloon and for extracting it from there so as to inflate and deflate it respectively, means for sealing the two upper apertures, which are open when at rest, and means for opening the lower aperture, which is closed when at rest, when the said small balloon is inflated, so as to induce urination. Its use is either to replace the bladder in the case of ablation or to re-establish the normal functions of a defective bladder.