ENERGY-DELIVERY DEVICES WITH FLEXIBLE FLUID-COOLED SHAFT, INFLOW / OUTFLOW JUNCTIONS SUITABLE FOR USE WITH SAME, AND SYSTEMS INCLUDING SAME
An energy-delivery device suitable for delivery of energy to tissue includes an antenna assembly, a chamber defined about the antenna assembly, and a cable having a proximal end suitable for connection to an electrosurgical energy source. The energy-delivery device also includes a flexible, fluid-cooled shaft coupled in fluid communication with the chamber. The flexible, fluid-cooled shaft is configured to contain a length of the cable therein and adapted to remove heat along the length of the cable during delivery of energy to the antenna assembly.
1 - 20 . (canceled)
21 . A treatment device comprising:
a feedline including an inner conductor and an outer conductor separated by a dielectric material;
a balun structure disposed along a portion of the feedline and including a conductive balun sleeve electrically coupled to at least a portion of the outer conductor of the feedline; and
a hub including an inlet fluid port and an outlet fluid port fluidly coupled to the inlet fluid port via a fluid-cooled shaft, wherein at least a portion of the feedline is disposed within the fluid-cooled shaft.
22 . The treatment device according to claim 21 , further comprising a cable assembly coupled to the feedline and configured to electrically couple the feedline to a power generating source.
23 . The treatment device according to claim 21 , wherein the balun structure further includes a balun insulator, and the conductive balun sleeve is disposed around an outer surface of the balun insulator.
24 . The treatment device according to claim 23 , wherein the balun insulator is disposed around the outer conductor of the feedline.
25 . The treatment device according to claim 23 , wherein the balun insulator is formed of at least one of ceramic, water, mica, polyethylene, polyethylene terephthalate, polyimide, polytetrafluoroethylene, glass, metal oxides, or any combinations thereof.
26 . The treatment device according to claim 21 , wherein a distal portion of the feedline includes a radiating section, and the balun structure is disposed proximal the radiating section of the feedline.
27 . The treatment device according to claim 21 , wherein a proximal end of the conductive balun sleeve is electrically coupled to the outer conductor of the feedline.
28 . The treatment device according to claim 21 , wherein the balun structure includes a balun short disposed at a proximal portion of the conductive balun sleeve configured to electrically couple the balun structure to the outer conductor of the feedline.
29 . The treatment device according to claim 28 , wherein the balun short is tubular-shaped.
30 . The treatment device according to claim 28 , wherein the balun short is formed of an electrically-conductive material different from the outer conductor of the feedline.
31 . A system comprising:
a power generating source configured to generated electrosurgical energy; and
a treatment device including:
a feedline including an inner conductor and an outer conductor separated by a dielectric material;
a balun structure disposed along a portion of the feedline and including a conductive balun sleeve electrically coupled to at least a portion of the outer conductor of the feedline; and
a hub including an inlet fluid port and an outlet fluid port fluidly coupled to the inlet fluid port via a fluid-cooled shaft, wherein at least a portion of the feedline is disposed within the fluid-cooled shaft.
32 . The system according to claim 31 , further comprising a cable assembly coupled to the feedline and configured to electrically couple the feedline to the power generating source.
33 . The system according to claim 31 , wherein the balun structure further includes a balun insulator, and the conductive balun sleeve is disposed around an outer surface of the balun insulator.
34 . The system according to claim 33 , wherein the balun insulator is disposed around the outer conductor of the feedline.
35 . The system according to claim 33 , wherein the balun insulator is formed of at least one of ceramic, water, mica, polyethylene, polyethylene terephthalate, polyimide, polytetrafluoroethylene, glass, metal oxides, or any combinations thereof.
36 . The system according to claim 31 , wherein the feedline includes a distal radiating section, and the balun structure is disposed proximal the distal radiating section of the feedline.
37 . The system according to claim 31 , wherein a proximal end of the conductive balun sleeve is electrically coupled to the outer conductor of the feedline.
38 . The system according to claim 31 , wherein the balun structure includes a balun short disposed at a proximal portion of the conductive balun sleeve configured to electrically couple the balun structure to the outer conductor of the feedline.
39 . The system according to claim 38 , wherein the balun short is tubular-shaped.
40 . The system according to claim 38 , wherein the balun short is formed of an electrically-conductive material different from the outer conductor of the feedline.
41 . The system according to claim 31 , wherein the hub is configured to fluidly couple to a coolant source via at least one of the inlet fluid port or the outlet fluid port.