Contains requirements concerning basic safety and essential performance that are generally applicable to medical electrical equipment. For certain types of medical electrical equipment, these requirements are either supplemented or modified by the special requirements of a collateral or particular standard. Where particular standards exist, this standard should not be used alone. The contents of the corrigenda of December 2006, of July 2007, the interpretation sheet 1 of April 2008, the interpretation sheet 2 of January 2009 and the interpretation sheet 2 of May 2013 have been included in this copy.