Endovascular electrolytically detachable wire and tip for the formation of thrombus in arteries, veins, aneurysms, vascular malformations and arteriovenous fistulas

  • US 5,895,385 A
  • Filed: 11/06/1997
  • Issued: 04/20/1999
  • Est. Priority Date: 03/13/1990
  • Status: Expired
First Claim
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1. An apparatus adapted to form an occlusion within a body cavity having fluid disposed therein comprising:

  • a wire; and

    a separable distal tip section adapted to be disposed into said body cavity to substantially space occupy said body cavity to mechanically form said occlusion within said body cavity about said separable distal tip section wherein mechanically forming an occlusion is defined as forming an occlusion so that fluid flow is substantially inhibited, said separable distal tip being adapted to be nonthermally separated from said wire to leave said separable distal tip section within said body cavity, wherein nonthermal separation is defined as a detachment without substantially increasing the temperature of said distal tip section, wherein said separable distal tip section is separated from said wire without necessarily displacing said distal tip section therefrom, wherein said separable distal tip section has no memory of its predisposed shape other than at most a relaxed simple helical shape,whereby said body cavity is occluded by said distal tip section, and any thrombus formed by use of said distal tip section.

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