Implantable lead having an elongated lead body

摘要

An implantable lead having an elongated lead body and a function conductor extending in the longitudinal direction of the conductor body, the function conductor being provided to implement a medical function of the lead, wherein in addition to the function conductor, a field decoupling conductor loop is provided, which reduces coupling of the function conductor to the outside alternating magnetic field by generating an induction field that is in the opposite direction of an outside magnetic field.

主权项

1. An implantable lead comprising:
an elongated lead body having a proximal end and a distal end; a first and a second proximal electrode connection at the proximal end; a first and a second stimulating, sensing and/or shock electrode at or close to the distal end; a first function conductor extending between the first proximal electrode connection and the first distal electrode; a second function conductor extending between the second proximal electrode connection and the second distal electrode, wherein the second function conductor is wound in a same or opposite direction as the first function conductor, the second function conductor being provided to implement a medical function of the lead; a field conducting conductor loop acting as a field decoupling means, the field conducting conductor loop comprising:
a first functionally independent field decoupling coil, which is wound in the first function conductor in an insulated manner; anda second functionally independent field decoupling coil, which is wound in the second function conductor in an insulated manner, wherein the second field decoupling coil is proximally and distally electrically connected to the first field decoupling coil at one or at several positions over the length of the electrode lead body by a conductive ring or coil section acting as a sliding contact; wherein the conductive ring or the coil section is embedded in insulation located between the first and second function conductors and, hence, between the first field decoupling coil and the second field decoupling coil, wherein the conductive ring or the coil section is in sliding contact with the first and second field decoupling coils.