US 12,233,251 B2
Blood pump
Thorsten Siess, Aachen (DE); Jimpo Wang, Danvers, MA (US); and Gerd Spanier, Aachen (DE)
Assigned to ABIOMED EUROPE GMBH, Aachen (DE)
Filed by Abiomed Europe GmbH, Aachen (DE)
Filed on Oct. 2, 2023, as Appl. No. 18/375,575.
Application 18/375,575 is a continuation of application No. 17/384,111, filed on Jul. 23, 2021, granted, now 11,813,444.
Application 17/384,111 is a continuation of application No. 16/087,546, granted, now 11,097,092, issued on Aug. 24, 2021, previously published as PCT/EP2017/056613, filed on Mar. 21, 2017.
Claims priority of application No. 16161941 (EP), filed on Mar. 23, 2016.
Prior Publication US 2024/0100319 A1, Mar. 28, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. A61N 1/362 (2006.01); A61M 60/13 (2021.01); A61M 60/139 (2021.01); A61M 60/216 (2021.01); A61M 60/232 (2021.01); A61M 60/237 (2021.01); A61M 60/419 (2021.01); A61M 60/422 (2021.01); A61M 60/50 (2021.01); A61M 60/82 (2021.01); A61M 60/824 (2021.01); A61M 60/825 (2021.01)
CPC A61M 60/419 (2021.01) [A61M 60/13 (2021.01); A61M 60/139 (2021.01); A61M 60/216 (2021.01); A61M 60/232 (2021.01); A61M 60/237 (2021.01); A61M 60/422 (2021.01); A61M 60/50 (2021.01); A61M 60/82 (2021.01); A61M 60/824 (2021.01); A61M 60/825 (2021.01)] 24 Claims
OG exemplary drawing
 
1. A drive unit for rotating an impeller of an intravascular blood pump, the drive unit comprising:
a housing;
a plurality of posts arranged about an axis of rotation, wherein each post of the plurality of posts includes a shaft portion and a head portion, wherein the shaft portion of each post is approximately parallel to the axis of rotation, and wherein the plurality of posts are contained in the housing; and
a plurality of coil windings, wherein each coil winding of the plurality of coil windings is disposed about the shaft portion of each posts and wherein each coil windings is sequentially controllable to create a rotating magnetic field;
wherein the head portion of each post has a top surface inclined at an angle relative to a plane perpendicular to the axis of rotation.