#$%^&*AU2015243789A120151105.pdf#####FLEXIBLE MICROWAVE CATHETERS FOR NATURAL OR ARTIFICIAL LUMENS ABSTRACT A coupler (845) for coupling a flexible coaxial cable (32), a fluid cooling system (40) and an outer sheath (35) of a catheter (30), the coupler (845) comprising: a fluid coupler body (845) including: a fluid inlet (842b) configured to operably couple to a source of cooling fluid and receive fluid therefrom； a fluid outlet (843b) configured to operably couple to a fluid discharge； and an outer sheath coupler (845b) forming an aperture for coupling with the outer sheath of a catheter while forming a fluid-tight seal therewith； and a fluid sealing system (819) housed in the fluid coupler body (845) including: a distal sealing diaphragm (819a) configured to form a fluidtight seal about an outer surface of an inflow lumen and a fluid-tight seal with an interior surface of the fluid coupler body (845) defining an outflow plenum in fluid communication with the fluid outlet； and a proximal sealing diaphragm (819b) configured to form a fluid-tight seal about an outer surface of the coaxial cable and a fluid-tight seal with an interior surface of the fluid coupler body (845) thereby forming an inflow plenum in fluid communication with the fluid inlet (842b).
