Safety element to permanently assure the electric reliability of pulse transmitting leads utilized in cardiac pacemakers for the electric stimulation of the heart

摘要

Safety element intended to assure in time the electric reliability of pulse transmitting leads, comprised in apparatus for the electric stimulation of the heart (pacemaker) and consisting of a main metallic coil of tubular structure delimiting an inner bore, covered by an insulating sheath, which safety element comprises a flexible lead formed by one or more wires coiled in tight turns or intertwined and provided with a rounded head for making it easier the introduction of the safety element in the bore of the main metal coil of the pulse transmitting lead.