Patent ID: 8594808
Filing Date: 2013-11-26
Classification: A61N,Y10T

Abstract:
1. A stimulation electrode comprising an electrically conducting base body, wherein the base body encompasses tantalum and the base body is at least partially covered with a porous tantalum oxide layer, which is anodically applied by means of high voltage pulses, characterized in that a metallic protective layer covers the porous tantalum oxide layer so as to prevent a hydrogen embrittlement and such that the metallic protective layer is an outer layer of the base body adjacent tissue in which the electrode is implanted; characterized in that the metallic protective layer encompasses at least one from the following group: platinum, iridium or iridium oxide; characterized in that the tantalum oxide layer encompasses an inner closed first oxide layer and an outer porous second oxide layer; characterized in that the metallic protective layer encompasses a layer thickness of between 0.01 μm to 10 μm; characterized in that the porous tantalum oxide layer encompasses a pore size of between 0.5 μm to 25 μm; and characterized in that the stimulation electrode and/or the porous tantalum oxide layer in combination with the metallic protective layer encompasses an electric capacitance of at least 5 mF/cm