Orthotopic artificial bladder endoprosthesis

An orthotopic artificial bladder endoprosthesis comprising:

• a casing defining an enclosure for containing urine of a patient, said casing being made of a polyglycolic acid fiber fabric;
• two first connectors connected to the casing and connectable to two ureters of the patient to allow an entrance of urine into the enclosure;
• a second connector connected to the casing and connectable to a urethra of the patient to allow an outflow of urine from the enclosure;
• and
• an insert member comprising a catheter inserted in the enclosure through said second connector and comprising a duct for insertion into the enclosure and an expandable element for insertion into the enclosure in fluid communication with said single duct, the catheter duct having an open proximal end external to the casing and a closed distal end inserted into the enclosure, wherein the duct is in fluid communication with the expandable element proximal to the distal end, such that a portion of the member is within the enclosure and a portion of the member is outside the enclosure, wherein the portion of the insert member within the enclosure is only in fluid communication with the expandable element;
• wherein said expandable element has, at a completely extended configuration, a volume between 200 cm3 and 500 cm3, the expandable element being configured to widen for adhering to the casing and supporting the casing during a formation of musculo-fibrous tissue during a resorption step.