An extendable flushing system, a delivery system including an extendable flushing system and a method of flushing a delivery system are provided. The extendable flushing system includes flexible tubing having an extended configuration and a compressed configuration, a first tubing end and a second tubing end. The extendable flushing system also includes a flush port and a shuttle assembly. The flush port includes a first lumen operably connected to the first tubing end and an opening configured to receive fluid therethrough. The shuttle assembly is operably connected to the second tubing end forming a fluid flow path with the flush port and the shuttle assembly. The shuttle assembly is configured to be fluidly connected to a lumen of an elongate device. The shuttle assembly is movably positionable relative to the flush port and configured to move the flexible tubing between the compressed configuration and the extended configuration.