| CPC A61N 1/05 (2013.01) [B23K 26/0622 (2015.10); B23K 26/359 (2015.10); B23K 2101/36 (2018.08); B23K 2103/08 (2018.08)] | 20 Claims | 

| 
               1. A medical device comprising an electrode comprising a monolithic substrate having at least one surface comprising a continuous pattern, wherein the monolithic substrate is a platinum iridium alloy, 
            wherein the continuous pattern is formed by at least one set of hollow lines, wherein the hollow lines of the at least one set of hollow lines have a line depth in the range of from 2 to 200 μm; and 
                wherein the at least one set of hollow lines forms boundaries of repeating elements, and 
                wherein the electrode has a charge storage capacity of at least 2.14±0.04 mC/cm2. 
               |