Catheter for RF ablation with cooled electrode and method
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United States of America Patent
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Aug 19, 1997
Issued Date -
N/A
app pub date -
Jan 31, 1995
filing date -
Dec 1, 1992
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Abstract
A catheter for radio frequency ablation with a cooled electrode for use in tissue having a surface comprising an elongate member having proximal and distal extremities. A metal conducting electrode secured to the distal extremity of the elongate member and having a chamber therein. A conductor extends through the elongate member from the proximal to the distal extremity for supplying radio frequency energy to the electrode. The elongate member has a lumen in the distal extremity which is in communication with the chamber. A coolant is disposed in the chamber and in contact with the electrode for dissipating heat created in the electrode by the application of radio frequency energy thereto.
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