Apparatus for progressively dilating the lumen of a narrow natural vessel (60) such as an iliac artery and implanting a tubular device (240) enabling access through the dilated lumen to conduct subsequent procedures via the dilated lumen, includes an inflatable integrated balloon (245) locatable at least partially within the tubular device, the tubular device (240) having a length L1 providing a self-expanding tubular body having at least a portion (250) including stents (244), so that when the integrated balloon (245) is removed the dilated lumen of the natural vessel (60) remains dilated and supported by the tubular device (240).
