Blood pump with modified liner

A system comprising:

• a blood pump, comprising:
• one or more struts coupled to a catheter, the one or more struts defining a housing having a blood inlet and a blood outlet, the one or more struts having an inner surface and an outer surface opposite the inner surface;
• an inner coating disposed on the inner surface at the blood inlet extending axially partially towards the blood outlet;
• an outflow tube coupled to the outer surface, the outflow tube surrounding the blood outlet and surrounding at least a first portion of the inner coating, and extending axially beyond the blood outlet;
• and
• an impeller disposed within the housing, the impeller including at least one blade, wherein a wrap angle of the at least one blade relative to a central axis is at least 100 degrees;
• and
• a controller operably coupled to the blood pump.

A system comprising:

• a blood pump, comprising:
• a pump housing coupled to a catheter configured for insertion into a blood vessel, the pump housing comprising an inner layer disposed on an inner surface of an expandable mesh layer defining a blood inlet and a blood outlet, the inner layer having a first end at the blood inlet and a second end offset axially from the first end by a first predetermined distance (D1);
• and
• an impeller disposed within the pump housing, the impeller including at least one blade, the impeller having a first end and a second end, where the first end of the impeller being offset axially from the first end of the inner layer by a second predetermined distance (D2), the second end of the impeller being offset axially from the first end of the inner layer by a third predetermined distance (D3);
• wherein D3>D2 and wherein either D2≥D1 or D1−D2≤50% of an axial length of the impeller;
• and
• a controller operably coupled to the blood pump.