AN IMPLANTABLE MRI COMPATIBLE MEDICAL LEAD

摘要

The invention relates to a medical implantable lead of the kind being adapted to be implanted into a human or animal body for monitoring and/or controlling of an organ inside the body, comprising in a distal end a combined fixation means and electrode member in form of a helix (4), which is rotatable in relation to the lead and extendable out from the distal end by rotation of a tubular torque transferring member (9). The helix is electrically connected to a connector (7) in the proximal end by means of at least one electrically conducting wire (14), which is formed as an electrically conducting coil (11, 17), which is separate from the tubular torque transferring member (19) and which comprises one or more individual wires each comprising an electrically conducting wire core (15) and a surrounding electrically insulating layer (16). The tubular torque transferring member has no electrically conducting function to or from the helix (4), wherein the lead is arranged such that the electrical connection between the helix and the conducting wire is always maintained irrespective of the rotational position of the helix while no electrical connection is present between the helix and the tubular torque transferring member although the helix is rotatable by means of the tubular torque transferring member.