US 11,717,669 B2
Intravascular blood pump with intake filter
Ralph Louis D'Ambrosio, Danvers, MA (US); Maxim Daschewski, Aachen (DE); Valentin Neblik, Aachen (DE); Jörg Schumacher, Aachen (DE); and Gerd Spanier, Aachen (DE)
Assigned to ABIOMED, INC., Danvers, MA (US)
Filed by ABIOMED, Inc., Danvers, MA (US)
Filed on Feb. 3, 2021, as Appl. No. 17/166,397.
Claims priority of provisional application 62/970,004, filed on Feb. 4, 2020.
Prior Publication US 2021/0236797 A1, Aug. 5, 2021
Int. Cl. A61M 60/135 (2021.01); A61M 60/216 (2021.01); A61M 60/888 (2021.01)
CPC A61M 60/135 (2021.01) [A61M 60/216 (2021.01); A61M 60/888 (2021.01); A61M 2205/04 (2013.01); A61M 2205/7563 (2013.01); A61M 2207/00 (2013.01)] 28 Claims
OG exemplary drawing
 
1. An intravascular blood pump, comprising:
a catheter configured for insertion into a blood vessel, the blood vessel defining an interior volume, through which blood flows;
a pump housing attached to the catheter and defining an input port and an output port, the pump housing having a longitudinal axis;
an impeller disposed within the pump housing and configured, when rotated, to pump blood from the input port to the output port; and
a filter configured to be mounted over an exterior of the pump housing, wherein the filter is in fluid communication between: (a) the interior volume of the blood vessel, external to the pump housing, and (b) the input port, the filter comprising a plurality of generally helical first struts wound about the longitudinal axis and a plurality of second struts, the plurality of generally helical first struts and the plurality of second struts collectively defining a plurality of apertures therebetween.