FLEXIBLE MINIATURE RIBBON CABLES FOR LONG-TERM CONNECTION TO IMPLANTABLE SENSORS

This paper describes the development of miniature, multi-lead ribbon cables for connecting implantable sensors to host electronics, either implanted or in the external world. The cables are flexible, electrically stable and biocompatible. Two technologies have been developed: one using polyimide (DuPont PI-2555) and the other using silicon as the support material. The present cables are less than 200 μm wide, are 10 to 20 μm thick and can be of arbitrary length (typically 1-2 cm). They can support as many leads as desired and can be bonded to the sensor substrate using flip-chip bonding techniques. © 1990.