Investigations on Explanted Micromachined Nerve Electrodes

Micromachining technologies have been used to manufacture neural microelectrodes for roughly a decade. One promising approach utilizes polyimide as a flexible and light-weighted substrate that carries electrode contacts, tracks, and connector pads. Beyond encouraging results, mainly gained in acute animal trials and in vitro tests, the reliability of this technology needs to be proved. The presented study investigates polyimide microelectrodes after several months of implantation focusing on the reliability of used materials and applied technologies.