Neural interface fabrication

Methods for fabricating implantable cuff electrodes for contacting or at least partially surrounding internal body tissue such as, e.g., nerves, smooth muscles, striated muscles, arteries, veins, ligamental tissues, connective tissues, cartilage tissues, bones, or other similar body tissues, structures and organs are disclosed. An example method includes preparing a substrate including an implantable cuff electrode shape, applying a mold material to the substrate, curing the mold material to form a mold, releasing the mold from the substrate, inserting at least one conductor into the mold that penetrates through the channel of the mold, pressing a formable material into the channel of the mold to form a body of an implantable cuff electrode about the at least one conductor, curing the body of the implantable cuff electrode, and releasing the body of the implantable cuff electrode from the mold.