STENT RETRIEVAL MEMBER AND DEVICES AND METHODS FOR RETRIEVING OR REPOSITIONING A STENT

摘要

An implantable stent includes a stent retrieval member (30) for repositioning or retrieval of the stent after it has been implanted into a bodily lumen. The stent includes a distensible tubular stent (10) having a tubular structure having a tubular wall (16) defined by an interior surface and an exterior surface and having opposed open ends (12,14) ; and a stent retrieval member (30) comprising an elongate member comprising a generally circular perimetric base (32) and a shaped projection (34) having first and second spaced apart members (36,38) extending acutely or perpendicularly from the base (32) and connected by an apical portion (40) . Force exerted on the shaped projection causes contraction or expansion of the circular base. The circular base is securably attached to one of the open ends of the stent, and the shaped projection extends longitudinally beyond this open end of the stent.