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US 11,229,784 B2Granted
Intravascular blood pumps and methods of use and manufacture
AssigneeShifamed Holdings, LLC
InventorsAmr Salahieh, Tom Saul, Brady Esch, Anna Kerlo, Daniel Hildebrand, Daniel Varghai
Life of this patent
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Abstract
Devices for moving blood within a patient, and methods of doing so. The devices can include a pump portion that includes an impeller and a housing around the impeller, as well as a fluid lumen. The impeller can be activated to cause rotation of the impeller and thereby move fluid within the fluid lumen.
Claims16
An intravascular blood pump, comprising:
- a collapsible housing including a fluid impermeable fluid conduit coupled to an expandable member, the expandable member having an open structure permitting flow therethrough, the fluid conduit including a distal end and a proximal end, a proximal portion of the expandable member extending proximally beyond the proximal end of the fluid conduit;
- and
- a collapsible distal impeller axially spaced from a collapsible proximal impeller, the distal impeller having an expanded configuration and the proximal impeller having an expanded configuration,
- the proximal impeller having an axial length in the expanded configuration, from 20% to 50% of the proximal impeller, measured along the axial length, being disposed outside of the fluid conduit while a remaining portion of the proximal impeller is disposed in the fluid conduit,
- at least a portion of the distal impeller being disposed in the fluid conduit.
2 more elements
Dependencies are inferred from the claim text.