Patent ID: 8583258

Claim:
An electrode lead for use with a medical implant comprising: an elongated electrode body with a proximal and a distal end having a longitudinal axis parallel to said elongated electrode body; at least one conductor that leads from the proximal end towards the distal end of the electrode lead; a first ring element located near the distal end of the electrode lead connected to the at least one conductor and positioned coaxially in the elongated electrode body wherein said first ring element comprises parallel cylinders that form a capacitor having a capacitance and wherein said parallel cylinders define capacitive surfaces that are parallel to said longitudinal axis; a second ring element at the distal end of the electrode lead and spaced distally at a longitudinal offset along said longitudinal axis from the first ring element and positioned coaxially in the elongated electrode body; a coil conductor electrically connected and located longitudinally along said longitudinal axis between the first and second ring element; wherein the coil conductor is configured to form an inductance which is in parallel circuitry with the first ring element to form a filter element in the at least one conductor and wherein at least a partial length of the coil conductor is accommodated in a stiff portion of the elongated electrode body configured to provide a stable inductance over said stiff portion of said elongated electrode body; and, wherein the first ring element, the coil conductor and the second ring element comprise a central feedthrough for a guidance element for the electrode lead.