This comprehensive resource explains the FDA's classification of devices and provides expert guidance on differentiating between significant risk and non-significant risk medical device studies. The book is divided into two parts: Significant Risk Medical Devices and Non-Significant Risk Medical Devices. Each chapter includes a general introduction and overview of the device, along with guidance on its working principles, beneficial and toxicological effects, and potential risks to the health and safety of a patient/subject. The coverage also includes reports of prior investigations on the basics of risk determination and the nature of potential harm associated with using individual devices.