US 12,074,500 B2
Axial flux motor for percutaneous circulatory support device
Kalyna L. Sconzert, Minneapolis, MN (US); Joseph A. Kronstedt, New Hope, MN (US); Benjamin Breidall, Eden Prairie, MN (US); and Kimberly A. Robertson, Forest Lake, MN (US)
Assigned to Boston Scientific Scimed, Inc., Maple Grove, MN (US)
Filed by Boston Scientific Scimed Inc., Maple Grove, MN (US)
Filed on Mar. 14, 2023, as Appl. No. 18/121,299.
Application 18/121,299 is a continuation of application No. 16/552,659, filed on Aug. 27, 2019, granted, now 11,632,015.
Claims priority of provisional application 62/723,591, filed on Aug. 28, 2018.
Prior Publication US 2023/0216371 A1, Jul. 6, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H02K 21/24 (2006.01); A61M 60/13 (2021.01); A61M 60/237 (2021.01); A61M 60/419 (2021.01); A61M 60/538 (2021.01); A61M 60/818 (2021.01); F16C 19/18 (2006.01); H02K 1/16 (2006.01); H02K 3/12 (2006.01); H02K 3/26 (2006.01); H02K 3/28 (2006.01); H02K 3/48 (2006.01); H02K 7/00 (2006.01); H02K 7/08 (2006.01); H02K 16/00 (2006.01)
CPC H02K 7/08 (2013.01) [A61M 60/13 (2021.01); A61M 60/237 (2021.01); A61M 60/419 (2021.01); A61M 60/538 (2021.01); A61M 60/818 (2021.01); F16C 19/188 (2013.01); H02K 1/165 (2013.01); H02K 3/12 (2013.01); H02K 3/26 (2013.01); H02K 3/28 (2013.01); H02K 3/48 (2013.01); H02K 7/003 (2013.01); H02K 7/083 (2013.01); H02K 16/00 (2013.01); H02K 21/24 (2013.01); F16C 2316/18 (2013.01); H02K 2203/03 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A percutaneous mechanical circulatory support device, comprising:
a housing;
a drive shaft disposed within the housing;
an impeller configured to be driven by the drive shaft;
a rotor having a diameter from 0.5 mm to 20 mm, the rotor comprising a diametrically-magnetized single pole pair magnetic ring having a rotor aperture defined through the center of the magnetic ring, wherein the drive shaft extends through the rotor aperture and wherein the rotor is fixed to the drive shaft; and
a stator comprising a plurality of conductive windings and a stator aperture, wherein the drive shaft extends through the stator aperture and wherein the drive shaft is rotatable within the aperture, and wherein the stator is configured to generate an axial magnetic field that causes the rotor to rotate, thereby rotating the drive shaft and the impeller;
a first bearing rotatably coupled to the drive shaft; and
a second bearing rotatably coupled to the drive shaft, such that the rotor and the stator are disposed between the first bearing and the second bearing.