A substrate for use in a pacing lead having a sintered porous platinized steroid eluting electrode. The substrate has at least one raised surface which provides an advantageous mounting portion for the sintered electrode. In the preferred embodiment the mounting portion is nailhead-shaped. The present...http://www.google.com/patents/US5408744?utm_source=gb-gplus-sharePatent US5408744 - Substrate for a sintered electrode
