A bio-implantable device and a method for manufacturing the same. The bio-implantable device comprises a substrate section made of a polymer； a wire section formed on a surface of the substrate section； at least one microwire array comprising a cover section made of a polymer and attached to the surface of the substrate section, on which the wire section is formed, to protect the wire section and to expose at least one end of the wire section, thereby forming a pad section； a functioning section electrically connected to the pad section； and at least one package comprising an encapsulating section made of a polymer to closely abut the functioning section and the pad section. The encapsulating section extends and is attached to a part adjacent to the substrate section and to the pad section of the cover section. The package is connected to an end of a corresponding microwire array.
