Electrosurgical devices, directional reflector assemblies coupleable thereto, and electrosurgical systems including same

1. A directional reflector assembly for use with an electrosurgical device, comprising:

a tubular shaft having a proximal end and a distal end, the tubular shaft defining a first lumen therein extending longitudinally from the proximal end to the distal end; and

a conical aperture coupled to the distal end of the tubular shaft, the conical aperture including:

a proximal open apex,

a distal open base,

an interior volume defined between the proximal open apex and the distal open base; and

a dielectric core disposed within the interior volume of the conical aperture, the dielectric core defining a second lumen coupled to the first lumen, the second lumen extending longitudinally through the proximal open apex and the distal open base,

wherein the dielectric core occupies the entirety of the interior volume except for the second lumen.

2. The directional reflector assembly according to claim 1 , further comprising a cooling chamber defined within the conical aperture.

3. The directional reflector assembly according to claim 2 , wherein the cooling chamber includes a coolant material circulated therethrough by a cooling source.

4. The directional reflector assembly according to claim 1 , further comprising a balun concentrically-disposed around at least a portion of the tubular shaft.

5. The directional reflector assembly according to claim 4 , wherein the balun is shorted to the tubular shaft.

6. The directional reflector assembly according to claim 4 , further comprising a balun dielectric layer concentrically-disposed between the balun and the tubular shaft.

7. The directional reflector assembly according to claim 1 , further comprising a balun disposed within the conical aperture.