STENT-GRAFT

摘要

This invention provides a stent-graft that has both shape-maintainability and flexibility, and when implanted in a living body, the stent-graft performs its intended functions for a considerably long period of time relative to conventional stent-grafts, without causing conflict. The stent-graft comprises a stent comprising multiple elastic rings and a graft. An auxiliary elastic wire whose rigidity is lower than that of the stent is arranged at the end-part of the graft, and the auxiliary elastic wire is connected to the multiple elastic rings at the opening part.

主权项

1. A stent-graft comprising a graft of a tubular shape and multiple elastic rings intermittently arranged in an axial direction of the tubular shape spanning across both end-parts of the graft, and housed into a delivery sheath, with each of the elastic rings being transformed into a saddle-shape, and the graft being folded in accordance with the transformation of the elastic rings, wherein
an auxiliary elastic wire, whose rigidity is lower than that of the elastic ring, is furthermore provided, and the auxiliary elastic wire is connected directly or through the graft, to the multiple elastic rings arranged at the end-parts of the graft.