3.2 Active medical device—Medical device relying for its functioning on a source of electrical energy or any source of power other than that directly generated by the human or animal body or gravity. 3.3 Advisory notice—Notice issued by the manufacturer, subsequent to delivery of the medical device and in vitro diagnostic medical devices, to provide supplementary information or to advise what action should be taken in or both in— (a) the use of a medical device and in vitro diagnostic medical devices;