TUNABLE MICROWAVE ABLATION CATHETER SYSTEM AND METHOD
摘要
An ablation catheter is disclosed that include a mechanism for altering the impedance of the antenna during use in a controlled manner to tune the catheter. The impedance tuning may be accomplished in a variety of manners including altering the electromechanical configuration of the antenna and moving a material relative to the antenna or vice versa in order to vary the effective impedance during use. In a preferred embodiment, the ablation catheter transmits energy in the microwave frequencies and uses a coaxial transmission line as its waveguide. The antenna is preferably helical in nature and is carried by the distal end of the transmission line.
申请公布号
EP0697842(A1)
申请公布日期
1996.02.28
申请号
EP19940917385
申请日期
1994.05.12
申请人
FIDUS MEDICAL TECHNOLOGY CORPORATION
发明人
GRUNDY, DAVID, ALAN;WARNER, GLEN, GRANT;MEAD, R., HARDWIN