Impeller for catheter pump
AssigneeTc1 LLC
InventorsZijing Zeng, Phyllis Yuen, Michael R. Butler
Life of this patent
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Abstract
An impeller for a pump is disclosed herein. The impeller can include a hub having a fixed end and a free end. The impeller can also have a plurality of blades supported by the hub. Each blade can have a fixed end coupled to the hub and a free end. The impeller can have a stored configuration and a deployed configuration, the blades in the deployed configuration extending away from the hub, and the blades in the stored configuration being compressed against the hub.
Claims24
An impeller for a catheter pump, the impeller comprising:
- a hub having a proximal end portion and a distal end portion;
- and
- a blade supported by the hub, the blade having a fixed end coupled to the hub and a free end,
- wherein the blade has a first thickness at the fixed end of the blade and a second thickness at the free end of the blade, the second thickness greater than the first thickness.
An impeller for a catheter pump, the impeller comprising:
- a hub having a proximal end portion and a distal end portion;
- and
- a blade supported by the hub, the blade having a fixed end coupled to the hub and a free end, wherein the blade comprises a first blade angle defined near a distal end of the blade and extending between a plane perpendicular to the free end of the blade and a plane perpendicular to the hub, wherein the blade comprises a second blade angle defined near a proximal end of the blade and extending between a plane perpendicular to the free end of the blade and a plane perpendicular to the hub, and wherein the first blade angle is larger than the second blade angle.
A percutaneous heart pump, the pump comprising:
- a catheter body;
- an impeller coupled to a distal end portion of the catheter body, the impeller comprising:
- a hub;
- a blade supported by the hub and having a front end portion and a back end portion, the blade including a ramped surface at the back end portion, the ramped surface defining a ramp angle relative to a plane perpendicular to the hub, the ramp angle in a range between about 30 degrees and about 50 degrees;
- and
- a sheath disposed about the catheter body and having a proximal end and a distal end, wherein the distal end of the sheath is configured to compress the blade from an expanded configuration to a stored configuration when the distal end of the sheath is urged against the ramped surface of the blade.
Dependencies are inferred from the claim text.