Detachable endovascular occlusion device activated by alternating electric current
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 2, 1999
Issued Date -
N/A
app pub date -
Jun 18, 1996
filing date -
Mar 13, 1990
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An apparatus is provided for electrocoagulating blood and tissue at an occlusion site by means of application of an alternating signal or current through a detachable partially insulated coil on the end of a microcatheter. A Guglielmi Detachable Coil (GDC) is preferably used in the combination with damped radio frequency energy to cause local heating at the location of the coil but without local ohmicly heated tissue damage or hot spots. Damping of the radio frequency energy facilitates the avoidance of hot spots. Once carbonization of blood at the detachment zone of the GDC coil occurs, the impedance of the entire system increases. The impedance increase is detected to automatically turn off the alternating current and then to apply a direct current to electrolytically detach the GDC coil from the microcatheter.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully