Stent graft delivery device
A stent graft delivery device includes a handle body, a distal handle, a proximal handle, a guidewire lumen, a nose cone, a rigid outer catheter, a graft push lumen, a sheath lumen, an inner sheath and a locking ring. The locking ring is switchable between an advancement position and a delivery position. The stent graft delivery device is employed in methods for endovascular delivery of stent grafts.
1. A stent graft delivery device, comprising:
a) a handle body having a proximal end and a distal end;
b) a distal handle at the distal end of the handle body;
c) a proximal handle about the handle body and proximal to the distal handle, the proximal handle being slidable along the handle body;
d) a guidewire lumen extending through the handle body lumen, the guidewire having a distal end distal to the handle body;
e) a nose cone fixed to the distal end of the guidewire lumen;
f) a rigid outer catheter fixed to and extending distally from the distal end of the handle body, the rigid outer catheter having a distal end;
g) a graft push lumen extending distally from the distal end of the handle body;
h) a sheath lumen linked to the proximal handle and extending about the push lumen;
i) an inner sheath extending about at least one of the graft push lumen and the guidewire lumen, the inner sheath extendable about an aortic prosthesis mounted about the guidewire lumen and between the distal end of the handle body and the nose cone; and
j) a locking ring at the handle body, the locking ring switchable between an advancement position, wherein the guidewire lumen, the graft push lumen, and the sheath lumen are selectively locked to the proximal handle, and a delivery position, wherein the guidewire lumen and the graft push lumen are selectively locked to the handle body and the sheath lumen is locked to the proximal handle, whereby distal movement of the proximal handle relative to the handle body when the locking ring is in the advancement position distally displaces the inner sheath and a portion of the guidewire lumen from the distal end of the rigid outer catheter, and proximal movement of the proximal handle relative to the handle body while the locking ring is in the delivery position and following distal displacement of the inner sheath and a portion of the guidewire lumen, causes retraction of the inner sheath in a proximal direction from the aortic prosthesis, thereby at least partially deploying the aortic prosthesis.