Braided occlusion device having repeating expanded volume segments separated by articulation segments

摘要

The present invention provides a flexible, low profile vascular occlusion devicehaving large volume filling capability and high metal content for fast occlusion,of the type fabricated from braided tubular metal fabric having an expanded presetconfiguration and an elongated collapsed reduced diameter configuration fordelivery through a catheter to a treatment site and shaped to create an occlusionof an abnormal opening in a body organ or vessel, the woven metal fabric havinga memory property whereby the medical device tends to return to said expandedpreset configuration when unconstrained. The device further includes a firstshape formed from the braided tubular fabric consisting of a repeating patternof expanded volume segments separated by small diameter articulation segmentsand a second overall device shape comprised of the first shape formed about itselfin various shapes to occlude a vessel. In one embodiment a shaping wire containedcoaxially within the tubular braid, provides or assists in the formation of thesecond overall device shape.