Introducer for a side branch device

An introducer device and a stent graft retained thereon, the stent graft comprising a tubular body and at least one fenestration in the tubular body, an indwelling catheter having a guide wire extending therethrough and associated with the introducer device, the indwelling catheter extending through the fenestration and the stent graft and to the proximal end of the stent graft whereby the guide wire can be advanced beyond the proximal end of the stent graft and introducer device so that it can be snared and a deployment device for a side arm can be deployed over the guide wire, once snared, to enter the fenestration.

An introduction arrangement for a fenestrated graft intended for deployment into the lumen of a vessel having a blind vessel extending therefrom;

• the fenestrated stent graft having a main tubular body having a distal end and a proximal end with a main lumen therethrough, a fenestration in the main body, the introduction arrangement including an introducer, the introducer having a distal end intended to remain outside a patient in use and a proximal end, the proximal end having a nose cone dilator and an arrangement to retain the fenestrated stern graft distally of the nose cone dilator, the fenestrated stent graft being retained on the introducer and a sheath on the introducer extending over the fenestrated stent graft to the nose cone dilator, an indwelling catheter extending from the distal end of the introducer through an introducer lumen in the introducer to the fenestrated stent graft, exiting from the introducer lumen at a distal end of the fenestrated stent graft and entering the fenestration to the main lumen and extending to the proximal end of the fenestrated stent graft, the indwelling catheter having a guide wire extending therethrough, whereby the guide wire can be extended beyond the nose cone dilator in use after the sheath is withdrawn from the fenestrated stent graft.