is in direct conductive contact with the heart or other applications as considered necessary.
Type BF is less stringent than CF, and is generally for devices that have
conductive contact with the patient, or having medium or long term contact with the patient.
Type B is the least stringent classification, and is used for applied parts
that are generally not conductive and can be immediately released from the patient.
Type B applied parts may be connected to earth, while Type BF and CF are 'floating'
and must be separated from earth.
Although IEC 60601-1 doesn't stipulate which classification is to be used for specific devices, the particular standards, IEC
60601-2-XX, generally do specify which classification is required.
More details of electrical requirements for