US 12,109,367 B2
Catheter pump with cannula and selectively positionable impeller blade
Alexander King, Maple Grove, MN (US); David Panus, Maple Grove, MN (US); Tracee Eidenschink, Wayzata, MN (US); John Pocrnich, Roseville, MN (US); and Kevin Griffin, Elk River, MN (US)
Assigned to TC1 LLC, St. Paul, MN (US)
Filed by TC1 LLC, St. Paul, MN (US)
Filed on Oct. 20, 2022, as Appl. No. 18/048,087.
Application 18/048,087 is a continuation of application No. 17/083,452, filed on Oct. 29, 2020, granted, now 11,679,234.
Application 17/083,452 is a continuation of application No. 16/390,366, filed on Apr. 22, 2019, granted, now 11,331,467, issued on May 17, 2022.
Claims priority of provisional application 62/661,717, filed on Apr. 24, 2018.
Prior Publication US 2023/0110809 A1, Apr. 13, 2023
Int. Cl. A61M 25/00 (2006.01); A61M 25/04 (2006.01); A61M 60/13 (2021.01); A61M 60/148 (2021.01); A61M 60/174 (2021.01); A61M 60/216 (2021.01); A61M 60/414 (2021.01); A61M 60/585 (2021.01); A61M 60/825 (2021.01)
CPC A61M 25/0023 (2013.01) [A61M 60/13 (2021.01); A61M 60/174 (2021.01); A61M 60/216 (2021.01); A61M 60/414 (2021.01); A61M 60/585 (2021.01); A61M 60/825 (2021.01); A61M 2025/0024 (2013.01); A61M 2025/0025 (2013.01); A61M 25/04 (2013.01); A61M 60/148 (2021.01)] 23 Claims
OG exemplary drawing
 
1. A catheter pump comprising:
a cannula comprising an inlet, an outlet, and a blood flow channel extending between the inlet and the outlet along a longitudinal axis, wherein the blood flow channel has a constant diameter along the longitudinal axis and wherein at least the inlet has a variable diameter along the longitudinal axis; and
at least one impeller blade being operable to convey blood through the blood flow channel between the inlet and the outlet;
wherein the at least one impeller blade is axially movable relative to the cannula in a first direction toward the inlet and in a second direction away from the inlet.