Fluid pump with a rotor
AssigneeEcp Entwicklungsgesellschaft Mbh
InventorMario Scheckel
Life of this patent
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Abstract
The invention relates to a fluid pump, in particular to a liquid pump having a rotor with at last one rotor blade for conveying the fluid, the rotor being variable with respect to its diameter between a first, compressed state and a second expanded state. In order to produce a simple compressibility and expandability of the rotor of the pump, it is provided according to the invention that at least one rotor blade is deformable between a first state which it assumes in the compressed state of the rotor and a second state which it assumes in the expanded state of the rotor by means of a fluid counterpressure during a rotation of the rotor during pump operation.
Claims21
1-28. (canceled)
A percutaneous pump, comprising:
- a rotor with a rotor blade for conveying fluid, the rotor having a compressed state, a first expanded state, and a second expanded state;
- wherein the rotor is configured to increase in diameter between the compressed state and the first expanded state;
- wherein the rotor is configured to increase in diameter between the first expanded state and the second expanded state while the rotor blade conveys fluid in a first rotational direction, said increase in diameter from the first expanded state due at least in part to fluid counterpressure acting against a leading side of the rotor blade in a second direction counter to the first rotational direction;
- and
- wherein, in the second expanded state, the rotor blade forms a substantially straight line between a radially inner end of the rotor blade and a radially outer end of the rotor blade.
A method for conveying fluid with a rotor, the method comprising:
- rotating a rotor in a first rotational direction, to increase a diameter of a rotor blade of the rotor between a compressed state and a first expanded state;
- and
- rotating the rotor in the first rotational direction such that fluid counterpressure acts against a leading side of the rotor blade in a second direction which is counter to the first rotational direction, to increase the diameter of the rotor blade of the rotor between a first expanded state and a second expanded state,
- wherein, in the second expanded state, the rotor blade forms a substantially straight line between a radially inner end of the rotor blade and a radially outer end of the rotor blade.
A percutaneous pump, comprising:
- a rotor with a rotor blade for conveying fluid, the rotor having a compressed state, a first expanded state, and a second expanded state;
- wherein the rotor is configured to increase in diameter between the compressed state and the first expanded state;
- and
- wherein the rotor is configured to increase in diameter between the first expanded state and the second expanded state while the rotor blade conveys the fluid in a first rotational direction, said increase in diameter from the first expanded state due at least in part to fluid counterpressure acting against a leading side of the rotor blade in a second direction counter to the first rotational direction.
A method for conveying fluid with a rotor, comprising:
- rotating a rotor in a first rotational direction to increase the diameter of a rotor blade of the rotor between a compressed state and a first expanded state;
- and
- rotating the rotor in the first rotational direction such that fluid counterpressure acts against a leading side of the rotor blade in a second direction which is counter to the first rotational direction to increase the diameter of the rotor blade of the rotor between a first expanded state and a second expanded state.
Dependencies are inferred from the claim text.