A system for preservation of the internal iliac artery includes a catheter with a distal catheter portion and a proximal catheter portion, a proximal portion extending from the proximal catheter portion, a distal portion extendable through the distal tip, and a proximal portion A first guidewire with an intermediate portion provided between the distal portion and the distal portion, a first outer sheath slidably fitted to the distal catheter portion, and at the distal catheter portion An integral second delivery system is included in the first outer sheath. The integrated second delivery system includes a second guidewire, an expandable stent-graft fitted to the lumen of the second guidewire, and a slidably fitted intermediate portion of the first guidewire. And a second guidewire that moves in an integrated second delivery system along the first guidewire when the first outer sheath is retracted from the distal catheter portion. Slidably engages the slidable connector to allow
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