An electrically conductive link (connection lead) or transmission line
(13) comprising at least one transformer (41, 42; 83) for coupling at
least two lead segments (51, 52; 81, 82) of the line (13) and for
providing safety of the line when guided through a RF field is disclosed.
Furthermore, an electrical device (10) in combination with such a
conductive link or transmission line (13) and a method for manufacturing
thereof are disclosed. These lines are especially provided for use with a
magnetic resonance (MR) imaging system and for connecting an electrical
device (10), especially a catheter or another invasive device for the
examination of a human body, to a connection unit (12) such as, for
example, a power supply or control unit outside the examination zone (1)
without imposing the risk of disturbances and/or destruction of the
electrical device and/or the connection unit and of burning a patient (P)
by a heating of the line when guided through RF fields.