There is significant interest in the development of medical devices capable of performing satisfactorily at their intended use conditions and complying with the stringent health care rules and regulations. Medical devices whether temporary or permanent, used externally or inside the body, are becoming more complex and more sophisticated both in terms of their performance specification and structural complexity. As a consequence, many devices in current use are multi-component and require methods of assembly in production. Joining is one of the key issues in many manufacturing industries and the medical industry is no exception.