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

DC
  • US 5,947,962 A
  • Filed: 10/06/1997
  • Issued: 09/07/1999
  • Est. Priority Date: 03/13/1990
  • Status: Expired due to Term
First Claim
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1. A catheter wire for use in electrothrombosis in combination with a microcatheter comprising:

  • a core wire having a main body and a distal portion, said distal portion being susceptible to electrolytic disintegration; and

    a detachable coil for insertion within a body cavity, said detachable coil being coupled to said main body via said distal portion, being comprised of material not susceptible to electrolytic disintegration, and being prebiased to a spiral or helical shape such that on its advancement out of the distal end of a microcatheter and into a cavity it will change from being straight to its prebiased spiral or helical shape so that on the application of current to said detachable coil disposed in the cavity, electrothrombosis can be performed and at least one portion of said distal portion electrolytically disintegrated to detach said detachable coil from said main body.

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