Endovascular electrolytically detachable wire and tip for the formation of thrombus in arteries, veins, aneurysms, vascular malformations and arteriovenous fistulas
First Claim
1. A wire for use in the formation of an occlusion within a vascular cavity in conjunction with a microcatheter having an interior lumen, said wire comprising:
- a metal coil having a first shape which conforms to said microcatheter lumen when within the microcatheter, and said metal coil forming an unbiased, regular cylindrical or unbiased single regular conical envelope when disposed out of said microcatheter.
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Accused Products
Abstract
An artery, vein, aneurysm, vascular malformation or arterial fistula is occluded through endovascular occlusion by the endovascular insertion of a platinum wire and/or tip into the vascular cavity. The vascular cavity is packed with the tip to obstruct blood flow or access of blood in the cavity such that the blood clots in the cavity and an occlusion if formed. The tip may be elongate and flexible so that it packs the cavity by being folded upon itself a multiple number of times, or may pack the cavity by virtue of a filamentary or fuzzy structure of the tip. The tip is then separated from the wire mechanically or by electrolytic separation of the tip from the wire. The wire and the microcatheter are thereafter removed leaving the tip embedded in the thrombus formed within the vascular cavity. Movement of wire in the microcatheter is more easily tracked by providing a radioopaque proximal marker on the microcatheter and a corresponding indicator marker on the wire. Electrothrombosis is facilitate by placing the ground electrode on the distal end of the microcatheter and flowing current between the microcatheter electrode and the tip.
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Citations
10 Claims
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1. A wire for use in the formation of an occlusion within a vascular cavity in conjunction with a microcatheter having an interior lumen, said wire comprising:
a metal coil having a first shape which conforms to said microcatheter lumen when within the microcatheter, and said metal coil forming an unbiased, regular cylindrical or unbiased single regular conical envelope when disposed out of said microcatheter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
Specification