An endoluminal energy delivery device including a proximal end and a distal end having an electrically conductive core 17 extending from the proximal to the distal end. An energy delivery tip 16 at the distal end includes a distal core portion 26 and an electrically conductive element 19 disposed coaxially around the distal core portion 26 and electrically coupled thereto in parallel. The distal core portion 26 is made of a first material and the electrically conductive element 19 is made of a second material, wherein the second material has a higher conductivity than the first material. Electrical energy supplied to the delivery device passes simultaneously through the distal core portion 26 and the electrically conductive element 19 as part of a monopolar RF electrode.
