A balloon-expandable shunt is disclosed for shunting a vessel which has a graft with two ends and at least one expandable support element supporting the graft from within along a length at or near at least one of its ends. The shunt is bifurcated at an aperture that leads to a side-channel and which has a closed configuration and an open configuration such that when the aperture is in the closed configuration it defines a clot-resistant inner graft surface and when the aperture is in the open configuration it is configured to provide access to the shunt for a balloon that actuates the expandable support element. A balloon configured for actuating the shunt is also disclosed. A kit has a bifurcated graft with at least one expandable support element and a balloon for actuating the at least one expandable support element.
