Embodiments of the invention are directed to an electrode implantation tool that is designed to assist in the accurate implantation of one or more electrodes in tissue of a patient. One embodiment of the electrode implantation tool comprises a catheter guide and introducer support, and catheter guide and an introducer. The catheter guide and introducer support comprises a first alignment member, a second alignment member, and a body member that is attached to the first and second alignment members. The body member fixes the relative orientations of the first and second alignment members. The catheter guide is supported by the first alignment member and comprises an elongate body having a distal end and a channel that is aligned with a longitudinal axis. The introducer comprises a sheath (166) that is supported by the second alignment member. The sheath defines a longitudinal axis. The first and second alignment members orient the longitudinal axis of the sheath at a predetermined angle to the longitudinal axis of the catheter guide.