CPC A61M 60/422 (2021.01) [A61M 60/13 (2021.01); A61M 60/226 (2021.01); A61M 60/443 (2021.01); A61M 60/857 (2021.01)] | 15 Claims |
1. A method of manufacturing a heart pump assembly, the method comprising:
coupling an impeller blade to a rotor;
inserting the impeller blade in a housing;
coupling a cannula to the housing;
coupling an inflow cage to the cannula, wherein the inflow cage comprises a plurality of apertures radially oriented about a constant circumference of the inflow cage, wherein the plurality of apertures is arranged in at least a first row of apertures spaced apart linearly about the constant circumference of the inflow cage and a second row of apertures spaced apart linearly about the constant circumference of the inflow cage, wherein the second row of apertures is proximal of the first row of apertures; and
coupling a distal projection to a distal end of the inflow cage, wherein the distal projection is distal to the plurality of apertures and a base of the distal projection forms a distal edge of the first row of apertures,
wherein the first row of apertures includes a plurality of first apertures and the second row of apertures includes a plurality of second apertures, each of the plurality of first apertures having an area greater than an area of each of the plurality of second apertures.
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