Patent ID: 7815671
Filing Date: 2010-10-19
Classification: A61F

Abstract:
1. A controlled stent-graft deployment delivery system, comprising: a stent-graft; a retractable primary sheath containing said stent-graft in a first constrained diameter configuration; an outer tube within the retractable primary sheath and within the stent-graft; an inner tube within the outer tube, wherein the inner tube and the outer tube both axially can move relative to the retractable primary sheath and to each other; a retention mechanism configured to retain at least a portion of a proximal portion of the stent-graft in a radially compressed configuration after said primary sheath has been retracted, wherein a controlled relative axial movement between the outer tube and the inner tube releases the proximal end of the stent-graft from the retention mechanism and from the radially compressed configuration, the retention mechanism comprising: a proximal lock attached to said outer tube, said proximal lock comprising ribs; and a cap attached to said inner tube, said cap comprising a shroud, wherein proximal spring apices at the proximal end of said stent-graft remain latched on said ribs in the radially compressed configuration while the proximal spring apices remain within the shroud.