US 12,220,570 B2
Intravascular blood pumps and methods of use
Daniel Hildebrand, Santa Cruz, CA (US); Michael Calomeni, San Jose, CA (US); Brian D. Brandt, Morgan Hill, CA (US); Janine Robinson, Half Moon Bay, CA (US); Ari Ryan, San Jose, CA (US); Daniel Varghai, Scotts Valley, CA (US); Reza Shirazi, San Jose, CA (US); Mostafa Ghoreyshi, Campbell, CA (US); and Amr Salahieh, Saratoga, CA (US)
Assigned to Shifamed Holdings, LLC, Campbell, CA (US)
Filed by Shifamed Holdings, LLC, Campbell, CA (US)
Filed on Oct. 7, 2019, as Appl. No. 16/595,280.
Claims priority of provisional application 62/741,970, filed on Oct. 5, 2018.
Claims priority of provisional application 62/778,804, filed on Dec. 12, 2018.
Claims priority of provisional application 62/905,818, filed on Sep. 25, 2019.
Prior Publication US 2020/0246527 A1, Aug. 6, 2020
Int. Cl. A61M 60/237 (2021.01); A61M 60/13 (2021.01); A61M 60/216 (2021.01); A61M 60/411 (2021.01); A61M 60/422 (2021.01); A61M 60/808 (2021.01); A61M 60/812 (2021.01); A61M 60/818 (2021.01); A61M 60/831 (2021.01); A61M 60/414 (2021.01)
CPC A61M 60/411 (2021.01) [A61M 60/13 (2021.01); A61M 60/216 (2021.01); A61M 60/422 (2021.01); A61M 60/808 (2021.01); A61M 60/812 (2021.01); A61M 60/818 (2021.01); A61M 60/831 (2021.01); A61M 60/414 (2021.01)] 49 Claims
OG exemplary drawing
 
1. 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.