IMPEDANCE GUIDED TUNNELING TOOL

摘要

A system includes a first electrode at a tip of a tunneling tool and a second electrode. The system includes a circuit configured to determine whether the tip of the tunneling tool is within subcutaneous fat tissue or muscle tissue of a patient based on a measurement of an impedance between the first electrode and the second electrode. In one embodiment, a lead is used in place of the tunneling tool, wherein the lead includes a coil providing the second electrode and a central lumen to receive insertion of a stylet providing the first electrode.