Stimulation of penis erection

1. A fully implantable penis erection stimulation system, for long-term use comprising

at least one infusion needle disposed at least partly within at least one housing with a tip end of the at least one infusion needle arranged for penetrating the at least one housing's outer wall in at least one penetration area, the at least one housing being adapted for implantation inside the patient's body,

at least one reservoir (R 1 , R 2 ) adapted for implantation inside the patient's body in fluid connection with the at least one infusion needle to supply to the infusion needle a substance to be injected into the patient's body,

at least one pump (P) adapted for implantation inside the patient's body to advance the substance from the reservoir to the at least one infusion needle, and

at least one drive unit (D) adapted for implantation inside the patient's body, the at least one drive unit being coupled to the at least one infusion needle and arranged at least for advancing and retracting the tip end of the at least one infusion needle so that the at least one infusion needle penetrates, upon advancement of the tip end or ends thereof, said at least one penetration area so as to allow for stimulation of penis erection by non-invasively injecting the substance through said at least one penetration area via the at least one infusion needle, wherein the at least one drive unit comprises a mechanical drive element arranged for transmitting kinetic energy from a remote location within the patient's body to the at least one infusion needle for advancing and/or retracting the tip end of the infusion needle,

wherein the mechanical drive element comprises at least one of at least one wire and at least one rotating shaft, the at least one rotating shaft being flexibly bendable and arranged for directly or indirectly cooperating with the infusion needle so as to cause movement of the infusion needle upon rotation of the rotating shaft and the at least one wire being arranged for directly or indirectly cooperating with the infusion needle so as to cause movement of the needle upon actuation of the wire, and wherein

the implantable penis erection stimulation system further comprising a control unit for non-invasively controlling directly or indirectly the wire or rotating shaft from outside the patients body.

2. The system of claim 1 , wherein the rotating shaft is in the form of a worm screw.

3. The system of claim 1 , wherein the rotating shaft extends through a conduit connecting the at least one infusion needle with the at least one reservoir.

4. The system of claim 1 , wherein turning the rotating shaft about its rotating axis causes the tip end of the at least one infusion needle to displace laterally from a first to a second penetration area and/or from a first penetration site to a second penetration site within a single penetration area.

5. The system of claim 1 , wherein turning the rotating shaft about its axis of rotation causes the infusion needle to advance and/or retract.

6. The system of claim 1 , wherein the at least one wire extends through a conduit connecting the at least one infusion needle with the at least one reservoir.

7. The system of claim 1 , wherein pulling at least one of the at least one wire causes the tip end of the at least one infusion needle to displace laterally from a first to a second of said at least two different penetration areas and/or from a first penetration site to a second penetration site within a single one of said at least two different penetration areas.

8. The system of claim 7 , wherein at least two, preferably three, pulling wires are provided and arranged for allowing a two-dimensional lateral displacement of the tip end of the infusion needle.

9. The system of claim 1 , wherein pulling at least one of the at least one wire causes the infusion needle to advance or retract.

10. The system of claim 1 , wherein the at least one drive unit further comprises as a drive at least one electric motor inside the housing accommodating the at least one infusion needle.

11. The system of claim 10 , further comprising wiring for transmitting electric energy from a remote location within the patient's body to the at least one motor.

12. The system of claim 11 , wherein the wiring is guided through a conduit connecting the at least one infusion needle with the at least one reservoir.

13. The system of claim 1 , wherein the mechanical drive element of the at least one drive unit is arranged for displacing the tip end of the infusion needle in at least one lateral direction.

14. The system of claim 13 , wherein the mechanical drive element of the at least one drive unit is arranged for displacing the tip end of the infusion needle in two or more lateral directions.

15. The system of claim 1 , wherein the at least one infusion needle is arranged for penetrating the at least one housing's outer wall in at least two different penetration areas.

16. The system of claim 1 , wherein the at least one infusion needle has a tube-like body closed at the tip end and having a laterally arranged delivery exit port, and wherein at least in the penetration area or areas the outer wall is made from a material which is self-sealing in respect of penetrations resulting from said at least one infusion needle.

17. The system of claim 1 , wherein the at least one infusion needle is flexibly bendable, wherein the tip end of each of the at least one infusion needle is arranged for penetrating the outer wall of a first housing and the other end thereof is arranged in a second housing for remote implantation inside the patient's body, the injection needle being sufficiently long to bridge the distance from the second housing for remote implantation to the first housing and further through the first housing up to the outer wall of the first housing.

18. The system of claim 1 , wherein the drive unit is configured to laterally displace the tip end of one infusion needle between two lateral positions such that the one infusion needle can penetrate the housing's outer wall in at least two different penetration areas, wherein the drive unit is configured to laterally displace the tip end of the one infusion needle in at least one of; laterally to different penetration sites within each of said different penetration areas, at least two different lateral directions and along a three-dimensional array of penetration sites.

19. The system of claim 1 , wherein the reservoir comprises at least one first compartment accommodating or adapted to accommodate a first substance and at least one second compartment accommodating or adapted to accommodate a second substance, further comprising a mixing chamber for mixing the substance from the at least one first compartment with the substance from one or more of the at least one second compartment, wherein the substance contained in the at least one second compartment is in at least one of;

powder form and freeze-dried form.

20. The system of claim 1 , further comprising at least one of:

at least one pump (P) adapted for implantation inside the patient's body to advance the substance from the reservoir to the at least one infusion device, and an actuating means for direct manual operation of the pump and/or the drive unit.