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 25/04 (2013.01); A61M 60/148 (2021.01); A61M 2025/0024 (2013.01); A61M 2025/0025 (2013.01)] | 15 Claims |
1. A catheter pump comprising:
an elongate body having a distal end and a proximal end opposite the distal end;
an expandable cannula defining a blood flow channel and comprising an impeller blade zone, an inlet zone provided at a distal end of the impeller blade zone and adapted to securely engage a bearing assembly at the distal end, and an outlet zone at a proximal end of the impeller blade zone;
an impeller system comprising an impeller body rotatably coupled to the bearing assembly, the impeller system coupled to a distal portion of a drive shaft that extends through the elongate body, wherein the bearing assembly includes a basket bearing located distal of the impeller body; and
an actuator at a proximal end of the drive shaft, the actuator having an input device for selectively transitioning between a separated configuration and an operational configuration,
wherein, selecting the operational configuration causes the impeller body to translate proximally along a longitudinal axis such that the impeller body is positioned within the impeller blade zone of the expandable cannula and located axially near the expandable cannula along the longitudinal axis, and the bearing assembly to securely engage the inlet zone of the expandable cannula to secure the impeller system relative to the expandable cannula without being completely disposed within a distal end of the expandable cannula, and
wherein, selecting the separated configuration causes the impeller body to translate distally along a longitudinal axis such that the impeller body is positioned out of the impeller blade zone of the expandable cannula.
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