Implantable device for internal urinary control

An apparatus for treating urinary retention in an original urinary bladder of a patient by discharging urine from the urinary bladder, comprising:

• an expandable member, adapted to be implanted inside the urinary bladder of a patient, for discharging urine from the urinary bladder as a result of its expansion in volume,
• an implantable control device for controlling the volume of the expandable member, the control device being adapted to be connected to the expandable member through a wall of the urinary bladder, wherein the control device comprises a powered operation device for assisting the expandable member to discharge urine, wherein
• the apparatus is adapted to be powered by
• wireless energy transmitted by an external energy transmission device for wireless transmission of energy from an outside of the patient's body to an inside of the patient's body to a comprised internal energy receiver,
• to be used in connection with operating the powered operation device and other energy consuming implantable parts of the apparatus, the internal energy receiver being connected to implantable energy consuming components of the apparatus for directly or indirectly supplying received energy thereto, wherein
• the apparatus further comprises a first implantable control unit and a second control unit operable from outside the patient's body, adapted to control the apparatus including and relating to control of the operation of the powered operation device and the wireless energy supply, wherein the apparatus being adapted to send feedback information relating to, the operation of the powered operation device and the wireless energy supply, to at least one of;
• the first implantable control unit, the second control unit operable from outside the body, or to the second control unit operable from outside the body via the internal control unit, wherein
• the expandable member is hydraulically controlled and comprises a cavity for hydraulic fluid;
• the control device comprises an implantable bladder operating reservoir for hydraulic fluid;
• the expandable member and the control device are adapted to be hydraulically connected through the wall of the urinary bladder, and wherein
• the powered operation device is capable of transporting hydraulic fluid to the cavity of the expandable member to obtain a urinary pressure of at least 50 cm water pressure for discharging urine from said original urinary bladder of the patient, to fully empty the urinary bladder.