Patent ID: 9731056
Date: 2017-08-15
CPC Classifications: A61M

Claim:
1. A blood pump comprising: a hollow body comprising a hollow cylinder in which an impeller with a blading is provided for an axial propulsion of the blood along the impeller through the hollow cylinder, wherein the impeller is configured to be set into a rotation about a rotation axis of the impeller with a motor stator located outside the hollow cylinder, and wherein the hollow body comprises an inlet for the flow of blood into the hollow body in an inflow direction which is essentially parallel to the rotation axis, and an outlet for the outflow of the blood out of the hollow body in an outflow direction, wherein the outlet is arranged offset to the rotation axis of the impeller such that an outflow angle (α) is produced between the inflow direction and the outflow direction, said angle being different from zero, wherein an inner radius (r) of the hollow body is enlarged to form a spiral-shaped discharge channel which runs tangentially around the impeller and runs out into the outlet, for a flowing-away of the blood out of the hollow body, running essentially tangentially to the impeller, and wherein the blading of the impeller is designed as a helix and is provided in the hollow cylinder; wherein the motor stator and at least a portion of the blading are located upstream of a point on the rotation axis at which the hollow body is enlarged to form the spiral-shaped discharge channel.