Heart help pump, system, and method
The present invention relates to a heart pump apparatus comprising a turbine pump for assisting the heart of a human patient. The invention is based on the realization that a turbine without a centre axis would improve the capacity of the heart help pump apparatus. The present invention also relates to a turbine pump system for assisting the heart of a human patient. The present invention also relates to operation methods and methods for surgically placing a rotating body of a turbine pump and a stator of a turbine pump in a patient.
1. A heart pump apparatus for assisting the heart of a human patient, the heart pump apparatus comprising:
a turbine pump adapted to be placed in a blood stream in the human patient to provide the heart of the human patient with additional pumping capacity,
wherein said turbine pump is a centre axis free turbine pump, and
said turbine pump comprises at least two rotating bodies that can be implanted in sequence in the same blood vessel, wherein one rotating body is adapted to rotate clockwise and the following other rotating body is adapted to rotate counter clockwise, or vice versa, and
wherein said turbine pump defines a longitudinal centre and is adapted to accelerate a blood fluid flow in a direction parallel to said longitudinal centre,
wherein each of the rotating bodies comprise blades extending internally from the respective rotating body.
2. The heart pump apparatus according to claim 1 , wherein the turbine pump is adapted to be placed inside the heart of the human patient.
3. The heart pump apparatus according to claim 1 , wherein the turbine pump is adapted to be placed in the aorta of the human patient.
4. The heart pump apparatus according to claim 1 , wherein the turbine pump is adapted to be placed in the abdominal aorta of the human patient.
5. The heart pump apparatus according to claim 1 , wherein the turbine pump is adapted to be placed in the pulmonary artery of the human patient.
6. The heart pump apparatus according to claim 1 , wherein the turbine pump comprises a rotating body that is adapted to be placed in said blood stream.
7. The heart pump apparatus according to claim 6 , wherein the turbine pump comprises a stator adapted to be placed outside a blood vessel and opposite the rotating body placed in the blood stream.
8. The heart pump apparatus according to claim 7 , wherein the stator is a part of an electrically controlled arrangement, which includes elements for receiving current to increase or decrease a magnetic field created at the stator.
9. The heart pump apparatus according to claim 8 , wherein the elements provide rotation of the rotating body, by creating a magnetic field between the poles of the stator.
10. The heart pump apparatus according to claim 6 , wherein the rotating body has longitudinal extension.
11. The heart pump apparatus according to claim 6 , wherein the rotating body has a cylindrical shape defined by an external cylindrical wall with an outer surface and an inner surface.
12. The heart pump apparatus according to claim 1 , wherein the blades are extending radially internally in the rotating body.
13. The heart pump apparatus according to claim 1 , wherein the blades are extending in a non-radial direction internally the rotating body.
14. The heart pump apparatus according to claim 1 , wherein said rotating body have a longitudinal centre in line with the blood stream, and wherein the respective blades have a first end attached to the rotating body and a second outer free end, which second free end is placed at a distance from the centre of the rotating body.
15. A turbine pump system for assisting the heart of a human patient, comprising a heart pump apparatus according to claim 1 .
16. The system according to claim 15 , comprising a rotating body adapted to be placed in said blood stream.
17. The system according to claim 16 , comprising a stator adapted to be placed outside the blood vessel and opposite the rotating body.