Fluid pump having a radially compressible rotor

摘要

To design the rotor as compressible in the radial direction in a fluid pump, in particular for microinvasive medical use, said rotor is configured as stretchable in its longitudinal direction by push elements and pull elements acting axially on it. A fluid pump is presented herein having a drivable rotor which is rotatable about its longitudinal axis and which has at least one impeller blade. The rotor at least partly comprises an elastically compressible and expandable material and is elastically stretchable by elements acting axially on it in the direction of its longitudinal axis. A push element and a pull element engage at different ends of the rotor and/or of a housing of the fluid pump. The push element and the pull element are configured to apply tension to the rotor by applying force in mutually opposite directions at the different ends of the rotor.

主权项

1. A fluid pump having a drivable rotor which is rotatable about its longitudinal axis and which has at least one impeller blade, wherein the rotor at least partly comprises an elastically compressible and expandable material and is elastically stretchable by elements acting axially on it in the direction of its longitudinal axis, characterized in that a push element and a pull element engage at different ends of the rotor and/or of a housing of the fluid pump, and wherein the push element and the pull element are configured to apply tension to the rotor by applying force in mutually opposite directions at the different ends of the rotor.