Method for manufacturing an electrode array for a neuroprosthetic device

A method of manufacturing an electrode array, said method comprising the steps of:

• forming a first insulating layer from a first nonconductive material with said first insulating layer having opposed first and second surfaces;
• depositing, by pressure-driven extrusion printing, a first conductive material over a portion of the second surface of the first insulating layer to form a first conductive layer having opposed first and second surfaces with the first surface of the first conducting layer facing the first insulating layer, with another portion of the second surface of the first insulating layer remaining exposed;
• depositing a second nonconductive material over a portion of the second surface of the first conductive layer and over the exposed portion of the second surface of the first insulating layer to form a second insulating layer having opposed first and second surfaces and a gap extending between the first and second surfaces of the second insulating layer with the gap exposing a portion of the second surface of the first conductive layer;
• and
• depositing, by pressure-driven extrusion printing, a second conductive material into the gap and over the exposed portion of the second surface of the first conductive layer to form a second conductive layer electrically connected to the first conductive layer to form at least one electrode of the electrode array.