Pump-outlet tube with sections

A method for assembling a left-ventricular assist device, the method comprising:

• passing an impeller, which is configured to pump blood of a subject, through a proximal end of a first section of a pump-outlet tube, such that the impeller is disposed within the first section,
• the proximal end of the first section comprising multiple first-section tabs and being shaped to define respective first-section gaps between successive ones of the first-section tabs;
• and
• bonding a second section of the pump-outlet tube, which comprises multiple second-section tabs and is shaped to define respective second-section gaps between successive ones of the second-section tabs, to the first section such that the second-section tabs overlap the first-section tabs and the second-section gaps are continuous with the first-section gaps so as to define one or more laterally-facing blood-outlet openings.