MINIATURIZED MICROWAVE ABLATION ASSEMBLY

摘要

Microwave applicators are disclosed which include a first transmission line segment, a second transmission line segment, and a third transmission line segment. The first transmission line segment includes a first inner conductor, a first dielectric disposed on the first inner conductor, and a first outer conductor disposed on the first dielectric. The second transmission line segment includes a second inner conductor, a second dielectric disposed on the second inner conductor, and a second outer conductor disposed on the second dielectric. The third transmission line segment includes a third inner conductor disposed on the third inner conductor, a third outer conductor disposed on the proximal end of the third dielectric. The impedance looking into the second transmission line segment from the first transmission line segment can be adjusted by adjusting the length of the third transmission line segment.

主权项

1. A microwave applicator having a longitudinal axis comprising:
a first transmission line segment including a first inner conductor and a first outer conductor circumscribing the first inner conductor, the first outer conductor having a first outer diameter; a second transmission line segment including a second inner conductor and a second outer conductor circumscribing the second inner conductor, the second outer conductor having a second outer diameter less than the first outer diameter; a third transmission line segment including a third inner conductor and a third outer conductor circumscribing the third inner conductor, the third outer conductor having a third outer diameter less than the second outer diameter, wherein an impedance of the second transmission line segment is based on a length of the third transmission line segment along the longitudinal axis of the microwave applicator.