Described are various embodiments of an improved endoprosthesis that includes a generally cylindrical graft portion that extends along a longitudinal axis to define a flow passage and a plurality of stent hoops. The plurality of stent hoops are connected to the graft portion and disposed in a spaced apart relationship along the longitudinal axis. There is at least a first suture disposed along on the outer surface of the main body. The first suture connects at least two of the spaced apart stent hoops together. The first suture also includes unidirectional barbs (or multidirectional barbs) configured to reduce movement of the main body with respect to a direction of blood flow in an artery.所敘述者係經改善之內置支架的各種實施例，該內置支架包括大體上為圓柱形的移植物部分，該移植物部分沿著縱軸延伸，以定義一流動通道、及複數個支架箍。該等複數個支架箍係連接至該移植物部分，並沿著該縱軸以隔開關係配置。沿著該主體之該外部表面上至少配置有一第一縫線。該第一縫線將至少兩個該等隔開的支架箍連接在一起。該第一縫線亦包括單向倒鉤(或多向倒鉤)，該等單向倒鉤(或多向倒鉤)經組態以減少該主體相對於動脈中之血流方向的移動。
