Anti-suction blood pump inlet
AssigneeABIOMED, Inc.
InventorsScott C. Corbett, Ahmad El Katerji, Charles DeLorenzo
Life of this patent
Estimating the term…
Abstract
A heart pump assembly includes an impeller blade coupled to a rotor or a drive shaft, a cannula, a distal projection coupled to a distal end of the cannula and a blood inlet having a plurality of apertures. The plurality of apertures is radially oriented and disposed about a circumference of the cannula. The plurality of apertures includes at least a first ring of apertures which are proximal to the distal projection and a second ring of apertures which are proximal of the first ring of apertures. The plurality of apertures can allow the heart pump assembly to continue to function if anatomical structures or tissue become suctioned to a portion of the heart pump.
Claims17
-40. (canceled)
A heart pump assembly comprising:
- a rotor;
- a motor coupled to the rotor;
- an impeller blade coupled to the rotor such that rotation of the rotor causes the impeller blade to rotate and pump blood;
- a catheter;
- and
- a cannula assembly comprising a cannula body and a blood inlet including a plurality of apertures radially oriented and disposed about a constant circumference exterior portion of the blood inlet,
- wherein the plurality of apertures include at least a first row of apertures spaced apart linearly about the constant circumference exterior portion of the blood inlet and a second row of apertures spaced laterally from the first row of apertures on the constant circumference exterior portion of the blood inlet, wherein the second row of apertures are proximal of the first row of apertures such that the second row of apertures are closer to the catheter than the first row of apertures, and
- wherein apertures in the first row of apertures are oblong in shape and are rotationally offset from apertures in the second row of apertures, which are circular in shape.
Dependencies are inferred from the claim text.