John Gerard for his invaluable guidance, patience and trust in my abilities to embark on this interesting work in this research area where very few technical details but more on regulatory affairs and requirements related to medical devices. I would like to thank my ex-working supervisor Dr Foo Jong Yong Abdiel from Ngee Ann Polytechnic for his vast experience in the quality assurance and regulatory compliance associated with medical devices and also his thoughtfulness in encouraging me to take up the studies while working. I am also very grateful and thankful to my excolleagues from Ngee Ann Polytechnic for their experience and kind guidance in the preparation of this thesis. I would like to thank my family members, Mr Tan Swee Chye and Mr Tan Xin Quan Jake, and especially my mother, Mdm Lee Bee Hwa, who really trusted in my capabilities on taking up a masters course to further my research interest. I would like to also thank my fiancée-to-be, Miss Ratna Yanti Ng Xue Ting, who is always there for me, having faith and trust in my capabilities and also encourage me when I am at my lowest point in writing this thesis. I am very grateful to Nanyang Technological University (NTU) for its research facility, without which this work would not have been possible. Lastly, I would like to thank my friends for their essential support.