Patent ID: 11904104
Assignee: ABIOMED, INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. An intravascular heart pump assembly comprising:
an elongate catheter having a proximal end configured to be positioned outside of a patient's body and a distal end configured to be positioned in an artery proximate to a patient's heart;
a rotor having at least one impeller blade coupled to the distal end of the elongate catheter; a motor operatively coupled to the rotor; and
a cannula having a proximal end and a distal end, the proximal end coupled to the distal end of the elongate catheter, the cannula comprising:
a cannula body having a proximal region and a distal region, the distal region having an inflow section comprising at least one reinforced lateral inflow hole, and the proximal region having an outflow section comprising at least one lateral outflow hole;
the inflow section being formed of a sheet of shape memory material and embedded within a polymer, the at least one reinforced lateral inflow hole in the inflow section being defined by a hole in the shape memory material sheet and by a hole in the polymer, wherein the hole in the shape memory material and the hole in the polymer overlap along an external surface of the inflow section; wherein the inflow section further comprises at least one slitted opening, wherein the slitted opening is in the shape memory material sheet and not in the polymer.