Patent ID: 6595762
Filing Date: 2003-07-22
Classification: A61M,F04D,F05B,F16C,Y10S

Abstract:
Apparatus for pumping sensitive biological fluids comprising:a construct having an exterior, a hollow interior having walls therein, at least one housing permanent magnet disposed therein, and an axial center; an inlet for passage of fluids through the construct and into the hollow interior of the construct; an outlet for passage of fluids through the hollow interior of the construct; an impeller disposed within the hollow interior of the construct and out of contact therewith for controlling fluid flow through the hollow interior of the construct; a plurality of magnetic actuators which provide six axes of control, including one axial translational axis, and one rotational axis; at least one impeller permanent magnet juxtaposed to the housing permanent magnet for suspending the impeller out of contact with the hollow interior of the construct; a motor for selectively rotating the impeller to thereby control fluid flowing through the apparatus, and wherein at least one of the five axes controlled for moment axial translation and radial translation is controlled by a set of permanent magnets and wherein the set of permanent magnets is magnetized in an axis parallel to an axis of rotation of the impeller.