Surgery – Instruments – Electrical application
Patent
1990-03-13
1992-06-16
Cohen, Lee S.
Surgery
Instruments
Electrical application
606 41, 128772, 128784, A61B 1738
Patent
active
051221365
ABSTRACT:
An artery, vein, aneurysm, vascular malformation or arterial fistula is occluded through endovascular electrothrombosis by the endovascular insertion of a platinum guidewire tip into the vascular cavity followed by application of a positive current. The guidewire tip is then separated from the guidewire by electrolytic separation of the tip from the guidewire. A portion of the guidewire connected between the tip and the body of the guidewire is comprised of stainless steel and exposed to the bloodstream so that upon continued application of a positive current to the exposed portion, the exposed portion is corroded away at least at one location and the tip is separated from the body of the guidewire. The guidewire and the microcatheter are thereafter removed leaving the guidewire tip embedded in the thrombus formed within the vascular cavity.
REFERENCES:
patent: 4522205 (1985-06-01), Taylor et al.
patent: 4735201 (1988-04-01), O'Reilly
patent: 4748986 (1988-06-01), Morrison
Guglielmi Guido
Sepetka Ivan
Cohen Lee S.
Dawes Daniel L.
The Regents of the University of California
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