Patent ID: 8721516

Claim:
A fluid pump, in particular liquid pump having a rotor with at least one rotor blade for conveying fluid, the rotor being variable with respect to its diameter between a first, compressed state and a second expanded state, wherein the 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, wherein the at least one rotor blade has a leading and a trailing side in a direction of movement during the conveying operation, characterised in that said leading side and said trailing side have different configurations in a form of different material properties and/or constructional assembly at least along a part of a distance between a radially outer tip of the at least one rotor blade and a radially inner end of the at least one rotor blade, wherein the at least one rotor blade has a plurality of shaped elements created from the blade trailing side, said shaped elements being selectively separated from one another by notches in said blade trailing side in said first state.