PROTECTIVE COATINGS FOR IMPLANTABLE MEDICAL DEVICES

摘要

While many families of polymers have been used to provide protection of device components in an implanted environment, poly-p-xylylene based (Parylene) coatings have been shown to have favorable compatibility, durability and barrier properties. An overview of the use of Parylene coatings in medical implant devices is presented. This paper describes critical factors related to performance and provides an example of coating barrier properties as measured on printed circuit boards (PCBs) with standardized circuits immersed in phosphate-buffered saline solution under expected use and accelerated conditions.