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US 2026/0115449 A1Published application
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, Seyed Mostafa GHOREYSHI, Amr SALAHIEH
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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.
Claims25
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 proximal collapsible impeller axially spaced from a distal collapsible impeller, at least a portion of each of the distal and proximal collapsible impellers disposed between the inflow and the outflow;
- and
- a proximal collapsible basket in which the proximal impeller is disposed, the proximal collapsible basket providing radial support to the blood conduit at the location of the proximal impeller;
- a distal collapsible basket in which the distal impeller is disposed, the distal collapsible basket providing radial support to the blood conduit at the location of the distal impeller;
- a collapsible radial support member supporting one or more of a distal region of the proximal collapsible basket, a proximal region of the distal collapsible basket, or a central section of the blood conduit disposed axially between the proximal basket and the distal basket.
4 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 proximal collapsible impeller axially spaced from a distal collapsible impeller, at least a portion of each of the distal and proximal collapsible impellers disposed between the inflow and the outflow;
- and
- a proximal collapsible basket in which the proximal impeller is disposed, the proximal collapsible basket providing radial support to the blood conduit at the location of the proximal impeller;
- a distal collapsible basket in which the distal impeller is disposed, the distal collapsible basket providing radial support to the blood conduit at the location of the distal impeller;
- a collapsible radial support member including an annular peripheral member and a plurality of support elements extending radially inward from the annular peripheral member,
- the collapsible radial support radially supporting one or more of a distal region of the proximal collapsible basket, a proximal region of the distal collapsible basket, or a central section of the blood conduit disposed axially between the proximal basket and the distal basket.
5 more elements
A method of deploying an intravascular blood pump across an aortic valve, comprising:
- advancing an intravascular blood pump to a region of a heart valve, the intravascular blood pump comprising a distal basket, a distal impeller, a proximal basket, a proximal impeller, and a blood flow conduit;
- deploying the distal basket and the distal impeller each from collapsed delivery configurations to deployed configurations;
- positioning at least a portion of the distal basket in a left ventricle so that a distal end of the distal basket is distal to aortic valve leaflets;
- deploying the proximal basket and the proximal impeller each from collapsed delivery configurations to deployed configurations;
- positioning at least a portion of the proximal basket in an ascending aorta so that a proximal end of the proximal basket is proximal to the aortic valve leaflets;
- positioning a central region of the conduit that is axially in between the deployed distal basket and the deployed proximal basket adjacent the aortic valve leaflets;
- activating the distal impeller to impel blood towards the proximal impeller;
- modifying the flow of blood with at least one flow modification member at at least one flow modification location that is proximal to the distal impeller and distal to the proximal impeller;
- activating the proximal impeller to impel blood to an outflow of the conduit.
6 more elements
A method of deploying an intravascular blood pump across an aortic valve, comprising:
- advancing an intravascular blood pump to a region of a heart valve, the intravascular blood pump comprising a distal basket, a distal impeller, a proximal basket, a proximal impeller, and a blood flow conduit;
- deploying the distal basket and the distal impeller each from collapsed delivery configurations to deployed configurations;
- positioning at least a portion of the distal basket in a left ventricle so that a distal end of the distal basket is distal to aortic valve leaflets;
- deploying the proximal basket and the proximal impeller each from collapsed delivery configurations to deployed configurations;
- positioning at least a portion of the proximal basket in an ascending aorta so that a proximal end of the proximal basket is proximal to the aortic valve leaflets;
- positioning a central region of the conduit that is axially in between the deployed distal basket and the deployed proximal basket adjacent the aortic valve leaflets;
- activating the distal impeller to impel blood towards the proximal impeller;
- activating the proximal impeller to impel blood to an outflow of the conduit;
- deploying a collapsible radial support to radially support at least one of a distal region of the proximal collapsible basket, a proximal region of the distal collapsible basket, or a central section of the blood conduit disposed axially between the proximal basket and the distal basket.
6 more elements
Dependencies are inferred from the claim text.