Theodore C. Ormsby,Russell Chung,George Leung,Gwo Jenn Shen
申请号：
US12424274
公开号：
US09326819B2
申请日:
2009.04.15
申请国别(地区):
US
年份:
2016
代理人:
摘要：
An ablation system which transmits radio frequency (RF) energy for the ablation of biological tissues has a transmission line and an RF antenna disposed at the distal portion of the transmission line. An RF signal generator supplies RF energy to the proximal end of the cable for transmission to the antenna, and an electrically tunable transformer is connected between the signal generator and the antenna. The transformer is tuned based on detection of the reflected power level from the antenna so as to reduce or minimize reflected power, thereby increasing RF energy coupling between the antenna and tissue.
