US 11,911,579 B2
Reduced rotational mass motor assembly for catheter pump
Adam R. Tanner, Mountain View, CA (US); Paul F. Muller, San Carlos, CA (US); Alan Schenck, Sunnyvale, CA (US); Michael R. Butler, Dublin, CA (US); and Todd Jenkins, San Jose, CA (US)
Assigned to TC1 LLC, St. Paul, MN (US)
Filed by TC1 LLC, Pleasanton, CA (US)
Filed on Nov. 30, 2020, as Appl. No. 17/106,800.
Application 17/106,800 is a continuation of application No. 16/946,306, filed on Jun. 16, 2020, granted, now 11,497,896.
Application 16/946,306 is a continuation of application No. 15/635,531, filed on Jun. 28, 2017, granted, now 10,709,830, issued on Jul. 14, 2020.
Application 15/635,531 is a continuation of application No. 15/003,576, filed on Jan. 21, 2016, granted, now 9,770,543, issued on Sep. 26, 2017.
Claims priority of provisional application 62/106,670, filed on Jan. 22, 2015.
Prior Publication US 2021/0077691 A1, Mar. 18, 2021
Int. Cl. A61M 25/09 (2006.01); A61M 60/148 (2021.01); A61M 60/414 (2021.01); A61M 60/419 (2021.01); A61M 60/829 (2021.01); A61M 60/422 (2021.01); A61M 60/237 (2021.01); A61M 60/13 (2021.01); A61M 60/508 (2021.01); A61M 60/825 (2021.01)
CPC A61M 25/09 (2013.01) [A61M 60/13 (2021.01); A61M 60/148 (2021.01); A61M 60/237 (2021.01); A61M 60/414 (2021.01); A61M 60/419 (2021.01); A61M 60/422 (2021.01); A61M 60/508 (2021.01); A61M 60/825 (2021.01); A61M 60/829 (2021.01); A61M 2205/3317 (2013.01); A61M 2205/3606 (2013.01); A61M 2205/366 (2013.01); A61M 2205/3666 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A catheter assembly comprising:
a catheter body having a proximal catheter portion and a distal catheter portion;
a drive shaft extending through a first lumen defined in the catheter body; and
a motor assembly comprising:
a motor housing;
a stator and a rotor each enclosed in the motor housing, the rotor being electromagnetically coupled to the stator, wherein the rotor rotates in response to energizing the stator; and
a flow diverter positioned radially between the rotor and the stator in the motor housing, wherein the flow diverter comprises:
a rotor chamber within which the rotor is disposed;
a distal chamber and a proximal chamber positioned on opposing sides of the rotor chamber; and
at least one flange configured to mechanically couple the flow diverter to the motor housing;
wherein the at least one flange comprises a first flange positioned between the proximal chamber and the rotor chamber and a second flange positioned between the distal chamber and the rotor chamber, and wherein the first flange and the second flange are configured as dampers to isolate the motor assembly from external shock or vibrations.