Implantable medical device and method of implanting the medical device

1. An implantable medical device, for implantation in a mammal joint having at least two contacting surfaces, the implantable medical device comprising:

an artificial contacting surface adapted to be lubricated, said artificial contacting surface comprising at least one partially integrated inlet, wherein said inlet is adapted to distribute lubricating fluid to said artificial contacting surface for lubricating said artificial contacting surface,

an implantable reservoir adapted to hold lubricating fluid,

at least one outlet from said implantable reservoir connected to said partially integrated inlet of said artificial contacting surface,

a subutacous injection port in fluid connection with said implantable reservoir, wherein said implantable reservoir comprises at least one movable self retracting wall portion, and wherein said at least one movable self retracting wall portion is adapted to constantly pressurize the lubricating fluid such that said lubricating fluid is constantly pressed from said implantable reservoir through said inlet, and

wherein said at least one moveable self retracting wall is adapted to:

be moved by said lubricating fluid being injected through said subutacous injection port, and

constantly pressurize the lubricating fluid by self retracting.

2. The implantable medical device according to claim 1 , further comprising at least one of:

a. an operation device adapted to circulate said lubricating fluid,

b. a reservoir adapted to add fluid to said circulating lubricating fluid, and

c. a filter adapted to clean said circulating lubricating fluid.

3. The implantable medical device according to claim 1 , wherein said reservoir is adapted to be at least one of:

a. placed at least partly inside of a bone of the patient,

b. placed at least partly inside of the femoral bone of the patient,

c. placed at least partly inside of the pelvic bone of the patient,

d. placed at least partly inside of the collum femur of the patient,

e. placed in the abdomen of the patient,

f. placed subcutaneously in the body of the patient,

g. placed in a cavity in the body of the patient, in a region selected from a group consisting of:

i. the abdominal region,

ii. the inguinal region,

iii. the pelvic region, and

iv. the thigh region.

4. The implantable medical device according to claim 1 , wherein said subutacous injection port is adapted to be implanted subcutaneously or in connection with bone.

5. The implantable medical device according to claims 1 , wherein said movable self retracting wall is adapted to place said lubricating fluid under pressure by at least one of:

a. said reservoir being spring loaded,

b. said reservoir comprises a chamber adapted to hold a compressed gas,

c. said reservoir comprises an elastic wall adapted to create said pressure, and

d. said reservoir comprises a self sealing silicone elastic wall.

6. The implantable medical device according to claim 1 , wherein said implantable medical device is at least one of:

a. adapted to be implanted in a knee joint of a patient, and wherein said artificial contacting surface is adapted to at least one of:

i. at least partly replace a contacting surface of a femoral bone, and

ii. at least partly replace a contacting surface of a tibial bone,

b. adapted to be implanted in a hip joint of a patient, and wherein said artificial contacting surface is adapted to at least one of

i. at least partly replace a contacting surface of a acetabulum, and

ii. at least partly replace a contacting surface of a caput femur.

7. The implantable medical device according to claim 1 , comprising a system comprising an internal energy source for powering implantable energy consuming components of the implantable medical device.

8. The implantable medical device according to claim 1 , comprising a system comprising an internal energy receiver, and an adaptation to be energized non-invasively and wirelessly by an energy transmission device from outside the patient's body, adapted for sending wireless energy to at least one of:

an implantable internal energy source comprised in the system, being chargeable by the energy transferred from the energy transmission device, and

at least one implantable energy consuming component of the system being energised with the wireless energy.

9. The implantable medical device according to claim 1 , comprising a system further comprising a sensor and/or a measuring device sensing or measuring at least one physical parameter of the patient.

10. The implantable medical device according to claim 1 , comprising a system further comprising a sensor and/or a measuring device sensing or measuring at least one functional parameter related to the implantable medical device.

11. The implantable medical device according to claim 10 , wherein said functional parameter comprises at least one of; a functional parameter correlated to a transfer of energy for charging an internal energy source, and a functional parameter related to the implantable medical device.

12. The implantable medical device according to claim 1 , wherein the implantable medical device further comprising a feedback device for sending feedback information from inside the patient's body to at least one of;

an implantable internal control unit comprised,

an external control unit outside of the patient's body,

an external control unit outside of the patient's body, via the internal control unit,

an external control unit outside of the patient's body, via the internal control unit according to the programming of the internal control unit performed by the external control unit,

wherein the feedback information is related to at least one of; at least one physical parameter of the patient and the at least one functional parameter related to the implantable medical device.