Shielded twisted pair of conductors using conductive ink

An apparatus, comprising:

• a substrate;
• and
• a circuit layer located on said substrate, said circuit layer comprising:
• a conductor layer comprising conductive material;
• and
• an insulator comprising a lower insulator layer and an upper insulator layer, wherein said conductor layer is located between said lower insulator layer and said upper insulator layer;
• and
• a shield comprising a lower shield layer and a upper shield layer, wherein said circuit layer located is between said lower shield layer and said upper shield layer.

A method for manufacturing an electrical infrastructure of a medical device, said method comprising:

• printing a base layer comprising conductive material in a predefined pattern on a surface of the medical device;
• printing a masking layer comprising nonconductive material directly over a portion of said first layer of conductive material;
• and
• printing a bridge layer comprising conductive material directly over a portion of said base layer and a portion of said masking layer.