| 摘要 |
<p>A system (100) for treating a vascular condition and methods for assembling such a system. The system (100) includes a catheter inner member (110), a stent framework (120), a graft material (130) aligned with the stent framework (120) to form a stent-graft assembly (150), and a slidable sheath (140). Multiple bands (115a,b,c,d,e) are spaced along the length of a distal portion (114) of the inner member (110), each band (115a,b,c,d,e) at least partially encircling the inner member (110). The stent framework (120) includes multiple rings (125a,b,c,d,e). The stent-graft assembly (150) is mounted on the inner member (110) such that the stent framework rings (125a,b,c,d,e) are interspaced with the inner member bands (115a,b,c,d,e). The movable sheath (140) encloses the stent-graft assembly (150). As the sheath (140) is withdrawn to deploy the stent-graft assembly (150), the interspaced bands (115a,b,c,d,e) and rings (125a,b,c,d,e) restrict axial movement of the assembly (150) and prevent longitudinal compression or buckling of the assembly (150), as anchoring of the stent-graft assembly (150) is distributed along the length of the inner member (110).</p> |
