A method and a stent/graft device for intraoperative repair of a damaged portion of a body vessel. The stent/graft device has a length at least as long as the length of the damaged portion of the vessel undergoing repair, and is positioned within the vessel such that the device at least spans the length of the damaged vessel portion. The stent/graft device is securely engaged with the vessel at the site of the damage in a manner such that migration of the device in said vessel is inhibited.