ABSTRACT

The term “life cycle,” when applied to a device, typically means all facets of the device’s existence, from the time it is conceived until the time it is discarded. The term “cradle to grave” is often used when referring to a device’s life cycle. A device’s life cycle is sometimes depicted as a circle in which the demise of one product version is followed by the incarnation of a new version. Experience in the marketplace can feed into the development

15.1 The Medical Life Cycle .........................................................................................623 15.2 Life Cycle and Errors .............................................................................................625 15.3 Different Types of Users ........................................................................................625 15.4 General Principles ..................................................................................................626