Fluid pump with a rotor
First Claim
Patent Images
1. A percutaneous pump, comprising:
- a rotor with a hub and 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;
wherein the rotor blade is a compressible and expandable continuous helical rotor blade; 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 along a length of the continuous helical rotor blade.
1 Assignment
0 Petitions
Accused Products
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.
-
Citations
27 Claims
-
1. A percutaneous pump, comprising:
-
a rotor with a hub and 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; wherein the rotor blade is a compressible and expandable continuous helical rotor blade; 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 along a length of the continuous helical rotor blade. - View Dependent Claims (2, 3, 4, 5, 6, 15, 21, 22, 23, 24)
-
-
7. A method for conveying fluid with a rotor, the method comprising:
-
rotating a rotor in a first rotational direction, wherein a diameter of a rotor blade of the rotor increases 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 the rotor blade is a compressible and expandable continuous helical rotor blade; 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 along a length of the continuous helical rotor blade. - View Dependent Claims (8, 9, 10, 11, 25, 26, 27)
-
-
12. A percutaneous pump, comprising:
-
a rotor with a hub and a rotor blade for conveying fluid, the rotor having a compressed state, a first expanded state, and a second expanded state, wherein a blade root of the rotor blade is connected to the hub at a connection point on a surface of the hub; wherein the rotor is configured to increase in diameter between the compressed state and the first expanded state; wherein the rotor blade is a compressible and expandable rotor blade, and the blade root of the rotor blade forms a continuous helix on the hub; 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. - View Dependent Claims (13, 14, 16, 17)
-
-
18. A method for conveying fluid with a rotor, comprising:
-
rotating a rotor in a first rotational direction, wherein a diameter of a rotor blade of the rotor increases between a compressed state and a first expanded state, wherein a blade root of the rotor blade is connected to a hub at a surface of the hub, and wherein the blade root of the rotor blade forms a continuous helix on the surface of the hub; 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. - View Dependent Claims (19, 20)
-
Specification