EMI problems for medical devices

The diagnostic and clinical equipments are required for accurate measurement of patients health monitoring and control Hence, a modern hospital is always updating the diagnostic equipments from time to time as the technology advances. The new facilities are being installed in the existing places without assertaining the possible EMI problems. The problems is acute with ever increasing of the wireless communication networks in the form of Cellullar phones, police networks and private Communication Networks due to which the EMI generate may render the medical devices to malfunctionor to indicae false readings. The European union has drafted the requirements as medical directive for the equipment which are used for clinical and non clinical purposes. The same will be imposed to all equipment manufacturers and the User's to safeguard the use of Medical Devices. In this paper the authors bring out the typical EMI sources encountered by both the types of Medical Devices indicated above and possible prevention through testing of devices as, per IEC/EN standards.