Fluid cooled choke dielectric and coaxial cable dielectric

摘要

The microwave antenna assembly includes a feedline electrically connected to an elongated shaft by a choke electrical connector. The feedline includes an inner conductor, an outer conductor, an elongated shaft and a choke electrical connector. The inner conductor is disposed in coaxial arrangement with the inner conductor and forms a dielectric supply lumen therebetween. The elongated shaft at least partially surrounding the feedline and form a dielectric return lumen therebetween. The choke electrical connector surrounds at least a portion of the feedline and electrically connects the feedline outer conductor to the elongated shaft. A low-loss dielectric fluid is supplied between the inner conductor and the outer conductor of the feedline and forms a dielectric barrier therebetween. The low-loss dielectric fluid also forms a dielectric barrier between the outer conductor of the feedline and the elongated shaft and the choke electrical connector forms a plurality of apertures extending therethrough, the apertures forming at least a portion of the dielectric return lumen.

主权项

1. A surgical microwave antenna assembly, comprising:
a feedline having a length, the feedline including:
an inner conductor;an outer conductor in a coaxial arrangement with the inner conductor, the inner conductor and outer conductor forming a supply lumen therebetween; 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.