one aspect of the invention provides catheter pullback apparatuses in which a reusable drive component is enclosed in a sterile disposable barrier enclosure , such as a polymeric sheath / bag . in one embodiment , the reusable drive component includes a pullback carriage that is magnetically coupled , through the sterile barrier , to a slideable catheter shuttle adapted to retain a catheter hub of a catheter . in another embodiment , a sterile barrier - enclosed drive component is inserted into a housing , in which process a piercing tip provided on the catheter shuttle pierces the enclosure and mechanically mates the slideable catheter shuttle and pullback carriage . in this manner , non - sterility of the operating environment is minimized .