Patent ID: 6722863
Filing Date: 2004-04-20
Classification: A61M,F04D

Abstract:
A turbo blood pump comprising:a housing having a pumping chamber, an inlet port, and an outlet port; an impeller rotatably disposed in the pumping chamber; bearings for rotatably supporting the impeller; a rotor provided outside the housing and rotationally driven by a motor; driven magnets mounted on the impeller; and driving magnets mounted on the rotor; the driven magnets and the driving magnets facing each other via a wall of the housing to form magnetic coupling, rotation of the rotor being transmitted to the impeller through the magnetic coupling, wherein the wall of the housing between the driven magnets and the driving magnets inclines with respect to the rotation axis of the impeller so as to form a concave shape, oblique surfaces extending along the wall are formed in a lower part of the impeller and an upper part of the rotor, respectively, the oblique surface in the upper part of the rotor protrudes toward the housing so as to form a convex shape, and the driven magnets and the driving magnets are arranged on the oblique surfaces, respectively, so as to face each other in parallel.