Devices, systems, and methods for repair of vascular defects

A balloon expandable shunt for shunting a disrupted vessel, comprising:

• a graft defining a first lumen having an expanded-state diameter and extending between first and second ends of the graft;
• at least one expandable support element supporting a length of the graft from within near at least one of said first and second ends;
• a side channel defining a second lumen and configured to receive a balloon for actuating the at least one expandable support element;
• a bifurcation at a portion of the graft defined by an intersection of the first lumen and the second lumen;
• and
• an elongate aperture in the graft circumscribing the bifurcation and having a substantially closed configuration and a substantially open configuration such that when the aperture is in the substantially closed configuration it defines a clot-resistant inner graft surface and when the aperture is in the substantially open configuration it is configured to provide access to the first lumen for a balloon for actuating the at least one expandable support element.