US 12,245,369 B2
Methods and systems for fabricating 3D multielectrode arrays with 3D printed electrodes
Timothy Gardner, Eugene, OR (US); Kara Zappitelli, Oakland, CA (US); and Morgan Brown, Eugene, OR (US)
Assigned to University of Oregon, Eugene, OR (US)
Filed by University of Oregon, Eugene, OR (US)
Filed on May 6, 2022, as Appl. No. 17/738,817.
Claims priority of provisional application 63/185,859, filed on May 7, 2021.
Prior Publication US 2022/0361323 A1, Nov. 10, 2022
Int. Cl. H05K 1/02 (2006.01); A61N 1/05 (2006.01); B29C 64/124 (2017.01); B29L 31/34 (2006.01); B33Y 10/00 (2015.01); B33Y 40/20 (2020.01); B33Y 80/00 (2015.01); H05K 1/03 (2006.01); H05K 1/09 (2006.01); H05K 3/06 (2006.01); H05K 3/10 (2006.01)
CPC H05K 1/0296 (2013.01) [B29C 64/124 (2017.08); B33Y 10/00 (2014.12); B33Y 40/20 (2020.01); B33Y 80/00 (2014.12); H05K 1/0346 (2013.01); H05K 1/0393 (2013.01); H05K 1/09 (2013.01); H05K 3/06 (2013.01); H05K 3/10 (2013.01); A61N 1/0526 (2013.01); B29L 2031/3406 (2013.01); H05K 2201/0154 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A multielectrode array comprising:
a flexible substrate;
a plurality of photopatterned electrical traces spaced apart and insulated from one another on the substrate; and
a plurality of 3D printed electrodes, each 3D printed electrode comprising a photopolymer coated in metal and having a 3D structure that extends outward from the substrate, wherein each 3D printed electrode is electrically connected to a corresponding electrical trace of the plurality of photopatterned electrical traces, wherein the 3D structure comprises a base disposed on the substrate and a shaft portion that extends from the base and narrows to a tip portion of the 3D structure, and wherein the base has a width or diameter in a range of 20-50 μm.