Rotary-piston pump
AssigneeRheinisch-Westfalische Technische Hochschule Aachen
InventorsJohannes WAPPENSCHMIDT, Andreas GOETZENICH, Ruediger AUTSCHBACH, Ulrich STEINSEIFER
Life of this patent
Estimating the term…
Abstract
The invention relates to a rotary piston pump, in particular for pumping blood, comprising a piston rotor (1) which has particularly two or three faces when seen in cross-section, which is mounted in a piston chamber (2) and eccentrically rotates, the piston rotor (1) having in its interior a plurality of magnetically interacting elements (4, 4a, 4b), in particular permanent magnets and/or coils, and being driven by the magnetic interaction of these elements (4, 4a, 4b) with at least one moving magnetic field.
Claims12
A rotary-piston pump, particularly for supplying blood, the pump comprising:
- a stator housing forming a piston chamber;
- a piston rotor having two or three lobes as seen in cross-section and rotatable eccentrically in the piston chamber;
- a plurality of magnetically attractable elements inside the piston rotor and
- means for generating at least one moving magnetic field for driving the elements by magnetic interaction.
Dependencies are inferred from the claim text.