In response to the strict usage standards of medical equipment, we have launched biocompatible fine signal lines to meet the matching needs of minimally invasive instruments, detection sensors, and micro therapy instruments. The outer diameter of the wire is thin, and it is not easy to break after repeated bending. The insulation material is damp heat resistant and aging resistant, and meets the safety testing standards. Fine wire can achieve parallel transmission of multiple signals inside the instrument, complete wiring in limited space, assist medical equipment manufacturers in developing smaller volume detection and diagnosis equipment, and promote the localization process of minimally invasive medical devices.