Impeller for catheter pump
First Claim
Patent Images
1. A catheter pump comprising:
- a catheter; and
an impeller mounted at an end of the catheter, the impeller comprising;
a hub having a proximal end portion and a distal end portion; and
a plurality of blades supported by the hub, each blade of the plurality of blades comprising a curved surface having a radius of curvature and a height defined as extending from a fixed end proximate the hub and a free end opposite the fixed end, wherein the radius of curvature and the height are selected such that the plurality of blades do not overlap when in a stored configuration.
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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.
505 Citations
20 Claims
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1. A catheter pump comprising:
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a catheter; and an impeller mounted at an end of the catheter, the impeller comprising; a hub having a proximal end portion and a distal end portion; and a plurality of blades supported by the hub, each blade of the plurality of blades comprising a curved surface having a radius of curvature and a height defined as extending from a fixed end proximate the hub and a free end opposite the fixed end, wherein the radius of curvature and the height are selected such that the plurality of blades do not overlap when in a stored configuration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of storing an impeller within a sheath for a catheter pump, the method comprising:
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providing a hub having a proximal end portion and a distal end portion, the hub supporting a plurality of blades; inserting the hub into the sheath; and collapsing the plurality of blades into a stored configuration, each blade of the plurality of blades comprising a curved surface having a radius of curvature, and a height defined as extending from a fixed end proximate the hub and a free end opposite the fixed end, wherein the radius of curvature and the height are selected such that the plurality of blades do not overlap when in a stored configuration. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification