ENDOLUMINAL DEVICE HAVING BARB ASSEMBLY AND METHOD OF USING SAME

摘要

An endoluminal device for implantation in a body lumen reduces movement or migration of the device after implantation by the use of barbs or barb assemblies. A first embodiment uses at least one barb assembly (105) having first portions (270) attached to an implant (100), a bend (280), and second portion (275) disposed opposite the first portion from the bend (280) and having a bearing surfaced (285). The second portion (275) is adapted to protrude radially inward when the inplant (100) is in the radially compressed configuration and radially outward when the implant (100) is in its radially expanded configuration. A second embodiment uses a barb (405) having a curved segment which is curved proximally and radially inwardly. A third embodiment utilizes at least one barb assembly (505) having a wire (507) with a length greater than the cell height of the implant across which it extends and a substantially uniform cross - sectional area.