| 摘要 |
FIELD: medicine. ^ SUBSTANCE: invention relates to medical equipment, namely, to stent-graft and, in particular, to spiral stent-graft for placing in thoracic artery. Stent-graft contains material of graft in form of tube and material, which gives rigidity to graft material. Stent-graft has, at least, two separate sections, each of which contains continuous and integral piece of material and is made in form of spiral with longitudinal axis, in fact, parallel to longitudinal axis of tube. One section rests against another section or is placed as close as possible to it to eliminate discontinuity in ensuring graft material rigidity. ^ EFFECT: invention insures lesser weakening of construction in case of wire break, possibility of selection of wires which are optimised for different zones of implant, elimination of tendency to successive falling of reinforcing spiral coils. ^ 8 cl, 1 dwg |
