US 12,329,958 B2
Blood pump
Thorsten Siess, Aachen (DE); Walid Aboulhosn, Aachen (DE); Wolfgang Kerkhoffs, Aachen (DE); Ellen Keysselitz, Aachen (DE); and Peter Skrodsky, Aachen (DE)
Assigned to Abiomed Europe GmbH, Aachen (DE)
Filed by Abiomed Europe GmbH, Aachen (DE)
Filed on Mar. 12, 2024, as Appl. No. 18/602,100.
Application 18/602,100 is a continuation of application No. 17/947,417, filed on Sep. 19, 2022, granted, now 11,957,892.
Application 17/947,417 is a continuation of application No. 16/997,011, filed on Aug. 19, 2020, granted, now 11,478,627, issued on Oct. 25, 2022.
Application 16/997,011 is a continuation of application No. 15/750,001, granted, now 10,780,208, issued on Sep. 22, 2020, previously published as PCT/EP2016/068576, filed on Aug. 3, 2016.
Claims priority of application No. 15179624 (EP), filed on Aug. 4, 2015.
Prior Publication US 2024/0293660 A1, Sep. 5, 2024
Int. Cl. A61M 60/419 (2021.01); A61M 60/135 (2021.01); A61M 60/232 (2021.01); A61M 60/237 (2021.01); A61M 60/422 (2021.01); A61M 60/806 (2021.01); A61M 60/824 (2021.01); A61M 60/825 (2021.01); A61M 60/857 (2021.01)
CPC A61M 60/419 (2021.01) [A61M 60/135 (2021.01); A61M 60/232 (2021.01); A61M 60/237 (2021.01); A61M 60/422 (2021.01); A61M 60/806 (2021.01); A61M 60/824 (2021.01); A61M 60/825 (2021.01); A61M 60/857 (2021.01)] 14 Claims
OG exemplary drawing
 
1. A blood pump, comprising:
a pump casing having a blood flow inlet and a blood flow outlet;
an impeller arranged in said pump casing and rotatably supported in the pump casing by at least one bearing so as to be rotatable about an axis of rotation, the impeller comprising at least one blade for conveying blood from the blood flow inlet to the blood flow outlet; and
a secondary blood flow inlet axially spaced from the blood flow inlet and the blood flow outlet in a main direction of flow,
wherein the at least one bearing comprises at least one stationary bearing portion coupled to the pump casing and having a stationary bearing surface that faces radially outwards, the at least one bearing further comprising a rotating bearing surface interacting with the stationary bearing surface to form the at least one bearing, wherein the rotating bearing surface faces radially inwards and is formed on a bearing structure coupled to an exposed radially inner edge of the at least one blade,
wherein the at least one blade is associated with the blood flow inlet in order to convey blood from the blood flow inlet to the blood flow outlet in the main direction of flow, and at least another blade is associated with the secondary blood flow inlet to convey blood from the secondary blood flow inlet to the blood flow outlet in a direction opposite the main direction of flow, and wherein the at least one blade and the at least another blade are arranged at axially opposing portions of the impeller adjacent an intermediate portion of the impeller, and
wherein the at least one stationary bearing portion and the impeller each comprise at least one magnet, the magnet in the at least one stationary bearing portion and the magnet in the impeller being radially aligned and arranged in the at least one stationary bearing portion and the impeller, respectively, such that an axial repulsive magnetic force is caused between the at least one stationary bearing portion and the impeller.