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US 12,220,570 B2Granted
Intravascular blood pumps and methods of use
AssigneeShifamed Holdings, LLC
InventorsDaniel Hildebrand, Michael Calomeni, Brian D. Brandt, Janine Robinson, Ari Ryan, Daniel Varghai, Reza Shirazi, Mostafa Ghoreyshi, Amr Salahieh
Life of this patent
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Abstract
Intravascular blood pumps and methods of use. The blood pump include a pump portion that includes a collapsible blood conduit defining a blood flow lumen between an inflow and an outflow. The pump portion includes a distal collapsible impeller axially spaced from a proximal collapsible impeller, at least a portion of each of the distal and proximal collapsible impellers disposed between the inflow and the outflow.
Claims49
An intravascular blood pump, comprising:
- a pump portion that includes:
- a collapsible blood conduit and a membrane layer attached to the collapsible blood conduit defining a blood flow lumen between an inflow and an outflow, the collapsible blood conduit comprising one or more struts forming a proximal expandable portion and a distal expandable portion;
- a distal collapsible impeller disposed in the distal expandable portion and a proximal collapsible impeller disposed in the proximal expandable portion, the distal collapsible impeller being axially spaced from the proximal collapsible impeller, at least a portion of each of the distal and proximal collapsible impellers disposed between the inflow and the outflow;
- and
- one or more stators in the blood flow lumen, the one or more stators each comprising a plurality of blood flow modifiers secured to the one or more struts and disposed axially between the distal and proximal impellers and being configured to increase a ratio of axial to radial flow of blood flowing through the blood flow lumen.
2 more elements
An intravascular blood pump, comprising:
- a pump portion that includes:
- a collapsible blood conduit defining a blood flow lumen between an inflow and an outflow;
- a distal collapsible impeller and a proximal collapsible impeller, the distal collapsible impeller being axially spaced from the proximal collapsible impeller, at least a portion of each of the distal and proximal collapsible impellers disposed between the inflow and the outflow;
- one or more proximal struts that define a portion of an expandable basket in which the proximal impeller or distal impeller is disposed;
- a membrane layer secured to the expandable basket, the membrane layer at least partially defining the collapsible blood conduit;
- and
- one or more stators in the blood flow lumen each comprising one or more blood flow modifiers, wherein the one or more blood flow modifiers are each secured to one of the one or more struts, the one or more stators disposed axially between the distal and proximal impellers and being configured to increase a ratio of axial to radial flow of blood flowing through the blood flow lumen.
4 more elements
Dependencies are inferred from the claim text.