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    • 9. 发明申请
    • BLOOD PUMP
    • US20230137197A1
    • 2023-05-04
    • US17912136
    • 2021-03-22
    • Abiomed Europe GmbH
    • Wolfgang KerkhoffsEllen Keysselitz
    • A61M60/13A61M60/221A61M60/422A61M60/818
    • This invention relates to an intravascular blood pump, comprising a pumping device with a pump casing having a primary blood flow inlet and a primary blood flow outlet which are hydraulically connected by a primary blood flow passage, a primary impeller with an upstream end and a downstream end being configured to convey a primary blood flow from the primary blood flow inlet to the primary blood flow outlet along the primary blood flow passage, a drive unit configured to rotate the primary impeller about an axis of rotation, an impeller bearing supporting the upstream end of the primary impeller, a central opening extending axially through the impeller bearing, and at least one secondary blood flow passage in the primary impeller, the at least one secondary blood flow passage having a secondary blood flow inlet in axial alignment with the central opening of the impeller bearing and each of the at least one secondary blood flow passage having a secondary blood flow outlet, wherein at least one secondary blood flow passage is configured to convey a secondary blood flow from the secondary blood flow inlet to the secondary blood flow outlet, and wherein the secondary blood flow outlet connects the at least one secondary blood flow passage to the primary blood flow passage at a location axially between the upstream and downstream ends of the primary impeller.