Introducer for an iliac side branch device
View Patent ↗An introduction arrangement for a fenestrated or branched stent graft ( 13 ) intended for deployment into the lumen of a vessel having a blind vessel extending from it. The introducer ( 1 ) has a distal end intended to remain outside a patient in use and a proximal end with a nose cone dilator ( 11 ) and an arrangement to retain the branched stent graft distally of the nose cone dilator. A sheath ( 15 ) on the introducer extends over the branched stent graft to the nose cone dilator. An indwelling catheter ( 22 ) extends from the distal end of the introducer and enters the fenestration or side arm and through to the nose cone dilator, the indwelling catheter has a guide wire ( 29 ) extending through it. The guide wire can be extended beyond the nose cone dilator in use before the sheath is withdrawn from the branched stent graft so that it can be snared from the contra-lateral artery.
1. An introduction arrangement for a branched stent graft intended for deployment into the lumen of a vessel having a blind vessel extending therefrom;
the introduction arrangement comprising an introducer device in combination with the branched stent graft,
the branched stent graft comprising a main tubular body comprising;
a distal stent graft end and a proximal stent graft end with a main lumen therethrough,
a side arm extending from the main body and having a side arm lumen therethrough and the side arm lumen being in fluid communication with the main lumen, the side arm comprising a distal open end,
the introducer device comprising a distal end intended to remain outside a patient in use and a proximal end to be introduced into a patient in use,
the introducer device comprising a guide wire catheter,
the guide wire catheter extending from a distal introducer end to a proximal introducer end,
an introduction catheter over the guide wire catheter and extending from the distal introducer end towards the proximal introducer end,
the introduction catheter comprising an introducer lumen and the guide wire catheter extending through the introducer lumen,
a nose cone dilator on the guide wire catheter at the proximal introducer end and an arrangement to retain the branched stent graft on the introducer device distally of the nose cone dilator,
the guide wire catheter extending threw the main lumen of the main tubular body, a retractable sheath on the introducer device extending over the introduction catheter and the branched stent graft to the nose cone dilator,
an indwelling catheter extending from the distal introducer end through the introducer lumen in the introduction catheter to the branched stent graft,
the indwelling catheter exiting from the introducer lumen at a distal end of the branched stent graft,
the indwelling catheter then extending outside of the main tubular body of the branched stent graft and then entering the distal open end of the side arm, the indwelling catheter then extending through the side arm lumen to the main lumen and then extending out of the proximal stent graft end of the branched stent graft to the nose cone dilator,
the indwelling catheter having an indwelling guide wire extending therethrough, whereby the indwelling guide wire can be extended beyond the nose cone dilator in use before the sheath is withdrawn from the branched stent graft.
2. An introduction arrangement for a branched stent graft as in claim 1 wherein the nose cone dilator comprises a longitudinal groove thereon to receive the indwelling catheter.