Patent ID: 8747448

Claim:
A stent graft delivery system comprising: a tip assembly having a tip tube; a middle member tube having a middle member proximal end and defining a middle member lumen, the tip tube being disposed in and axially slideable within the middle member lumen; a sheath assembly having a sheath tube and a sheath handle operably connected to a sheath tube proximal end, the sheath tube defining a sheath lumen, the middle member tube being disposed in and axially slideable within the sheath lumen; a threaded assembly having a threaded assembly distal end and defining an exterior thread, the threaded assembly having a first threaded tube portion, a second threaded tube portion, and a longitudinal slot disposed between the first threaded tube portion and the second threaded tube portion; and a unitary front grip defining a proximal front grip lumen and a distal front grip lumen in communication with the proximal front grip lumen, wherein at least a portion of the longitudinal slot is disposed proximal of the unitary front grip; wherein the sheath tube is disposed in and axially slideable within the distal front grip lumen, the threaded assembly distal end is disposed in the proximal front grip lumen and fixed to the unitary front grip, and the first threaded tube portion and the second threaded tube portion are radially compressed together by the unitary front grip; and wherein the sheath handle engages the exterior thread of the threaded assembly in a first configuration to move the sheath tube axially relative to the middle member tube and tip tube through rotation of the sheath handle and disengages the exterior thread of the threaded assembly in a second configuration to move the sheath tube axially relative to the middle member tube and tip tube through axial motion of the sheath handle.