Treating aneurysms by applying hardening/softening agents to hardenable/softenable substances
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United States of America Patent
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Jul 13, 1999
Grant Date -
N/A
app pub date -
Jul 10, 1996
filing date -
Jul 10, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method and system for treating aneurysms by applying RF energy to collagen. A catheter is disposed near the aneurysm and collagen is exuded into or near the aneurysm. RF energy is applied, using the same catheter or a second catheter, to the collagen, causing the collagen to harden and cover the weak region of the blood vessel wall, and providing a base onto which epithelial cells of the blood vessel may grow. The catheter comprises an electrophysiology catheter, including a ring electrode preferably disposed to deliver between about 5 and about 30 watts of RF energy at a frequency preferably between about 450 and about 600 Megahertz, to apply sufficient energy to cause the collagen to harden while avoiding damage to surrounding tissue.
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