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Method and apparatus for restricting flow through an opening in the side wall of a body lumen, and/or for reinforcing a weakness in the side wall of a body lumen, while still maintaining substantially normal flow through the body lumen

  • US 8,956,475 B2
  • Filed: 04/02/2012
  • Issued: 02/17/2015
  • Est. Priority Date: 12/11/2007
  • Status: Active Grant
First Claim
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1. A method for making a device for causing thrombosis of an aneurysm, wherein said device comprises a single elastic filament configurable between (i) an elongated, substantially linear configuration, and (ii) a longitudinally-contracted, substantially three-dimensional configuration, said method comprising:

  • providing a sheet of shape memory material;

    producing a single filament, two-dimensional interim structure from said sheet of shape memory material, wherein said single filament, two-dimensional interim structure is temporarily held to said sheet of shape memory material by an attachment tab;

    mounting said single filament, two-dimensional interim structure to a fixture so that said single filament, two-dimensional interim structure is transformed into said longitudinally-contracted, substantially three-dimensional configuration; and

    heat treating said single filament, two-dimensional interim structure while it is mounted to said fixture so as to produce said single elastic filament in its longitudinally-contracted, substantially three-dimensional configuration.

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