Impeller for catheter pump
First Claim
Patent Images
1. 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.
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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.
494 Citations
24 Claims
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1. An impeller for a catheter pump, the impeller comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An impeller for a catheter pump, the impeller comprising:
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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. - View Dependent Claims (16, 17, 18, 19, 20)
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21. A percutaneous heart pump, the pump comprising:
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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. - View Dependent Claims (22, 23, 24)
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Specification