RF OR MICROWAVE ABLATION CATHETER WITH REMOTE DICKE SWITCH

摘要

The invention provides devices and systems, as well as associated methods of using them, that employ a remote Dicke switching element—i.e., distal to a radiometer. The devices, systems, and methods are suitable for both diagnostic and therapeutic applications in a wide variety of tissues.

主权项

1. An ablation system comprising:
a) a coaxial cable having a first end and a second end; b) a microwave antenna coupled to the first end of the coaxial cable; c) a Dicke switch proximate to the antenna, the Dicke switch coupled to and between, the antenna and coaxial cable; and d) a multiplexer coupled to the second end of the coaxial cable, the multiplexer being between, and coupled to, the coaxial cable and: an ablation energy generator, a switch bias source, and radiometer, the radiometer being configured to measure temperature from the antenna, the radiometer coupled to a control of the ablation energy generator.