Abstract: An assembly for securing an electrode lead within a burr hole formed in a patient's skull. The assembly is provided for reliably, easily, and reversibly securing an implanted electrode lead such that the active portion of the lead which is inside the brain tissue within the skull is not subject to unwanted translations when the external portion of the lead is manipulated. The securing assembly has two separate components. The first is a bone port which seats within a preformed burr hole in the skull. The bone port is a cylindrical shaped short tube which includes a means for gripping the skull on the external periphery of the cylinder. The central axial hole of the port is designed to receive the second lead-locking portion of the assembly. The external surface of the lead-locking portion and the interior surface of the central axial hole of the port include an easily engageable coupling means, for example a bayonet locking mechanism.