Patent ID: 8398670

Claim:
A collapsible implantable medical device comprising an outer metal fabric surrounding an inner metal fabric, said outer and inner metal fabrics each having a plurality of braided metal strands with an expanded preset configuration, each of the outer and inner metal fabrics having a proximal end and a distal end, the outer metal fabric surrounding the inner metal fabric from the proximal end of the inner metal fabric to the distal end of the inner metal fabric, at least one of said proximal or distal ends of the outer or inner metal fabrics comprising at least one fastener adapted to secure the plurality of braided metal strands of the inner and/or outer metal fabrics together, said inner and outer fabrics configured to facilitate thrombus formation to thereby create an occlusion, wherein said occlusion blocks fluid flow passage through a portion of the vasculature of a body, said expanded preset configuration being deformable to a lesser cross-sectional dimension for delivery through a channel in a patient's body, the outer and inner metal fabrics having a memory property such that the medical device tends to return to said expanded preset configuration when unconstrained.