Method and apparatus for endovascular thermal thrombosis and thermal cancer treatment
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United States of America Patent
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Dec 22, 1998
Issued Date -
N/A
app pub date -
Jun 30, 1995
filing date -
Mar 13, 1990
priority date (Note) -
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status (Latency Note)
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Abstract
A trombus is generated in an aneurysm, arteriovenous malformation or fistula by means of a catheter having an insulated heating coil coupled to an insulated delivery wire. In one embodiment, two delivery wires are coupled to heating coils to provide a closed circuit. The heating coils may be in the form of a double helix or a single helix in combination with a straight heating coil. The heating coils may be electrolytically or mechanically detached therefrom. Alternatively, a single insulated heating coil may be attached to a single insulated delivery wire with a uninsulated coil attached to the tip of the insulated heating coil. The electrical circuit is then made through the heating coil and non-insulated electrode coil into the vascular system and to a body electrode. A catheter may also be used for heating blood within the vascular system which is directly flowed into a tumoral mass for the purposes of thermal treatment of cancer.
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