US 12,465,746 B2
Axial flow blood pump
Onur Dur, Milpitas, CA (US); and Kevin Bourque, Reading, MA (US)
Assigned to TC1 LLC, St. Paul, MN (US)
Filed by TC1 LLC, St. Paul, MN (US)
Filed on Dec. 20, 2023, as Appl. No. 18/390,643.
Application 17/008,984 is a division of application No. 15/807,398, filed on Nov. 8, 2017, granted, now 10,780,207, issued on Sep. 22, 2020.
Application 18/390,643 is a continuation of application No. 17/983,265, filed on Nov. 8, 2022, granted, now 11,883,641.
Application 17/983,265 is a continuation of application No. 17/008,984, filed on Sep. 1, 2020, granted, now 11,511,104, issued on Nov. 29, 2022.
Application 15/807,398 is a continuation of application No. PCT/US2016/032516, filed on May 13, 2016.
Claims priority of provisional application 62/162,205, filed on May 15, 2015.
Prior Publication US 2024/0189572 A1, Jun. 13, 2024
Int. Cl. A61M 60/82 (2021.01); A61M 60/148 (2021.01); A61M 60/178 (2021.01); A61M 60/242 (2021.01); A61M 60/419 (2021.01); A61M 60/422 (2021.01); A61M 60/812 (2021.01); A61M 60/824 (2021.01)
CPC A61M 60/419 (2021.01) [A61M 60/148 (2021.01); A61M 60/178 (2021.01); A61M 60/242 (2021.01); A61M 60/422 (2021.01); A61M 60/812 (2021.01); A61M 60/82 (2021.01); A61M 60/824 (2021.01); A61M 2205/8206 (2013.01); A61M 2209/088 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A blood pump comprising:
a housing comprising an inner wall surface defining an inlet, an outlet downstream from the inlet, and a blood flow channel between the inlet and the outlet;
an impeller comprising a magnetic material and positioned within the blood flow channel;
a motor stator positioned about the blood flow channel between the inlet and the outlet, wherein the motor stator is operable to magnetically suspend and rotate the impeller within the blood flow channel to pump blood through the blood flow channel in a downstream direction;
a first permanent magnet producing a first permanent magnetic field urging the impeller in the downstream direction;
a second permanent magnet producing a second permanent magnetic field urging the impeller in an upstream direction that is opposite to the downstream direction;
wherein the first permanent magnetic field and the second permanent magnetic field are configured to provide increased stabilization of the impeller in an axial direction.