THORACIC AORTIC ANEURYSM REPAIR APPARATUS AND METHOD

摘要

A stent graft and delivery system for deploying a stent graft at a lesion site are provided. The stent graft includes a graft having a radially expandable tubular body defining a distal end forming a distal ring and an opposing proximal end forming a proximal ring. The stent includes a body defining a distal end and an opposing proximal end, and includes at least one structural wire forming a first helical wire portion having a first translational direction about an axis of the stent and a second helical wire portion having a second translational direction about the axis opposite the first translational direction. The stent has an initial configuration and is movable to a deployed configuration corresponding to a curvature of the curved portion. A capture mechanism is operatively coupled to the graft proximal end. The capture mechanism is initially configured to retain the graft proximal end in an insertion configuration. The capture mechanism is actuatable to release the graft proximal end. A delivery system includes a wire lumen that is slidably positionable about a guide wire positioned within a vessel of a patient. A support stent is slidably positioned about the wire lumen. An inner sheath is retractably positioned about the support stent with the support stent in the compressed insertion configuration. An anchor stent is slidably positioned about the inner sheath. The anchor stent is deployable from a compressed insertion configuration to a deployed configuration. An outer sheath is retractably positioned about the anchor stent with the anchor stent in the compressed insertion configuration.