Microwave antenna having a reactively-loaded loop configuration

摘要

A microwave ablation system is provided. The microwave ablation system includes a power source. A microwave antenna is adapted to connect to the power source via a coaxial cable feed including an inner conductor defining a portion of a radiating section of the microwave antenna, an outer conductor and dielectric shielding. The inner conductor loops back around and toward the outer conductor of the coaxial cable feed such that a distal end of the inner conductor is operably disposed adjacent the dielectric shielding. The inner conductor includes one or more reactive components disposed thereon forming a reactively-loaded loop configuration configured to maximize delivery of microwave energy from the power source to tissue such that a desired effect to tissue is achieved.

主权项

1. A microwave ablation system, comprising:
a power source; a microwave antenna; a coaxial cable feed adapted to connect the microwave antenna to the power source, the coaxial cable feed including an inner conductor, an outer conductor, a dielectric shielding, and a radiating section; a reactively-loaded loop structure coupled to the inner conductor, the reactively-loaded loop structure having at least two reactive components; and a conductive shield disposed adjacent a distal end of the radiating section and extending beyond the distal end of the radiating section to at least partially wrap around the radiating section.