Medical devices and systems comprising electrical traces are provided. The medical device comprises a sheath body (120) comprising an inner wall, an outer wall, and a central major lumen (20) extending through the sheath body (120) along a longitudinal axis. The central major lumen is defined by the inner wall. The medical device further comprises at least one outer lumen (38) extending through said sheath body, wherein the at least one outer lumen (38) is disposed between the inner wall and the outer wall, at least one electrode (14) coupled to a distal portion of said sheath body (120), and at least one electrical trace (44). Each of the at least one electrodes (14) is coupled to at least one electrical trace (44), and the electrical trace (44) is disposed between the inner wall and the outer wall.
