Abiomed Europe Gmbh

Abiomed, Inc.

Marius Grauwinkel

Wolfgang Kerkhoffs

Thorsten Siess

Peter Skrodsky

Jim-Po Wang

Jimpo Wang

An intravascular blood pump for percutaneous insertion into a patient's blood vessel is provided. The blood pump comprises a pump casing and an impeller arranged in the pump casing. The blood pump further comprises a drive unit for rotating the impeller, the drive unit comprising a plurality of posts. Each of the posts has an impeller-side end pointing towards the impeller with a front surface facing the impeller. A coil winding is disposed around each of the posts so as to create magnetic field lines running through the front surface of each of the posts. The front surface of at least one of the posts comprises a concavity in which the front surface is inclined downwards towards a central area of the front surface so as to concentrate at least a part of the magnetic field lines running through the front surface.

Blood pump

A blood pump rotor for an intravascular blood pump includes a distal portion having a rotor hub. A distal end of the rotor hub extends beyond a most distal portion of at least one blade formed on the hub. A proximal portion comprises permanent magnets arranged to form a modified Halbach array generating a magnetic field with a first magnetic flux in a proximal direction that is greater than a second magnetic flux in the distal direction. The array is arranged so that: (a) at least one axial magnetized magnet has a most proximal point that is a different distance from said distal end as compared to a most proximal point of at least one circumferential magnetized magnet, (b) at least one axial magnetized magnet has a physical dimension that is different from a corresponding physical dimension of at least one circumferential magnetized magnet, or (c) a combination thereof.

Intravascular blood pump rotor

An intravascular blood pump () comprises a pump casing () having a blood flow inlet () and a blood flow outlet (), and an impeller () arranged in said pump casing () so as to be rotatable about an axis of rotation, wherein the impeller () has blades () sized and shaped for conveying blood from the blood flow inlet () to the blood flow outlet (). The blood pump () further comprises a drive unit () for rotating the impeller (), the drive unit () comprising a plurality of posts () arranged about the axis of rotation (). Coil windings () around the posts are sequentially controllable so as to create a rotating magnetic field. The shaft portion () of each of the posts () comprises a soft magnetic material which is discontinuous in cross-section transverse to the longitudinal axis of the respective post ().

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Aachen, Germany

Marius Grauwinkel