Medical devices with layered conductive elements and methods for manufacturing the same

A medical device for performing a diagnostic or therapeutic procedure within a subject, comprising:

• an elongate body comprising an outer elongate member comprising a polymeric material and having an outer surface, a proximal end, a distal end, and a lumen surrounded by a circumferential wall, the elongate body further comprising an inner elongate member extending within the lumen of the outer elongate member and having a proximal end, a distal end, and lumen surrounded by a circumferential wall, wherein the elongate body comprises a distal end configured to be inserted into a lumen or duct of the subject;
• first and second electrically-conductive tracings carried on the outer surface of the outer elongate member, the first electrically-conductive tracing electrically isolated from the second electrically-conductive tracing;
• first, second, and third elongate lumens extending longitudinally within the circumferential wall of the outer elongate member, the first, second, and third elongate lumens generally form a circumferential array;
• a first conductive wire extending substantially longitudinally within the first elongate lumen and configured to carry a first signal;
• a second conductive wire extending substantially longitudinally within the second elongate lumen and configured to carry a second signal;
• a third conductive wire extending substantially longitudinally within the third elongate lumen and configured to carry a third signal;
• wherein the first, second, and third conductive wires are located in a first sector of the circumferential wall of the outer elongate member, and wherein a second sector of the circumferential wall of the outer elongate member does not have any elongate conductive wires, such that the circumferential array of the first, second, and third elongate conductive wires is unevenly distributed around outer elongate member.