ENDOVASCULAR STENT GRAFT ASSEMBLY AND DELIVERY DEVICE

摘要

A pre-loaded delivery device that facilitates accurate placement of a stent graft assembly in the aorta is disclosed. A stent graft is carried on the delivery device and held in a pre-deployment configuration by a sheath. A split in the sheath facilitates the pre-cannulation of one or more branch arteries extending from the aorta before the stent graft is fully released in the aorta. The stent graft comprises a tubular body having at least one scalloped fenestration formed in one end of the graft material and at least one fenestration formed in the graft material of the main tubular body. A helical internal side branch extends from the fenestration within the lumen of the main tubular body. The helical side branch is configured to curve at least partially around the scalloped fenestration. The assembly further comprises a connection stent graft extending from the fenestration into a branch vessel.

主权项

1. A system for the delivery and deployment of an endovascular stent graft comprising:
a delivery device having a longitudinal axis comprising a pusher catheter having a proximal end and a distal end and defining a lumen extending between the proximal and distal ends and a guide wire catheter extending longitudinally within the lumen of the pusher catheter; a stent graft releasably coupled to the delivery device, a sheath having a proximal end and a distal end, wherein the sheath is disposed over the stent graft thereby retaining the stent graft in a radially contracted configuration on the delivery device, the sheath comprising a split located between the proximal and distal ends of the sheath thus forming a distal sheath segment located distal of the split and a proximal sheath segment located proximal of the split; and an auxiliary catheter having a proximal end and a distal end and defining a guide wire lumen therebetween, wherein the auxiliary catheter extends longitudinally under the distal sheath segment and through the sheath split between the proximal and distal sheath segments.