Patent ID: 8876814
Filing Date: 2014-11-04
Classification: A61B,H01Q

Abstract:
1. A surgical microwave antenna assembly, comprising: a feedline having a length, the feedline including: an elongated shaft, at least partially surrounding the feedline, the elongated shaft and the feedline forming a return lumen therebetween; a choke electrical connector including a substantially cylindrical inner surface surrounding the feedline over a portion of the length thereof and configured to electrically connect the outer conductor of the feedline to at least a portion of the elongated shaft; and a low-loss dielectric fluid supplied between the inner conductor and the outer conductor of the feedline forming a dielectric barrier therebetween, the low-loss dielectric fluid also forming a dielectric barrier between the outer conductor of the feedline and the elongated shaft, wherein the choke electrical connector forms a plurality of apertures extending therethrough, the apertures forming at least a portion of the return lumen.