Abstract: An electrode assembly (1) for an active implantable medical device comprising: an elongated, biocompatible, electrically non-conductive body (3) having a first portion (7) and a second portion (9); one or more biocompatible, electrically conductive filaments (5) inside the elongated non-conductive body (3) between the first portion (7) and the second portion (9); and one or more fluid passages (11) along the elongated electrically non-conductive body (3) between the first portion (7) and second portion (9), wherein the one or more fluid passages (11) allow a surrounding fluid (13) of a patient to be in electrical contact with the one or more conductive filaments (5). There is also disclosed a method of manufacturing an electrode assembly.

Abstract: In one aspect the invention provides an implant conductor lead assembly which includes an electrode lead, and at least one field target conductor. The field target conductor(s) is located adjacent to the electrode lead to mutually couple the field target conductor to the electrode lead. The electrode lead acts to concentrate electromagnetic fields in the vicinity of the implant conductor assembly towards the field target conductor or conductors.

Abstract: An electrode assembly (1) for an active implantable medical device comprising: an elongated, biocompatible, electrically non-conductive body (3) having a first portion (7) and a second portion (9); one or more biocompatible, electrically conductive filaments (5) inside the elongated non-conductive body (3) between the first portion (7) and the second portion (9); and one or more fluid passages (11) along the elongated electrically non-conductive body (3) between the first portion (7) and second portion (9), wherein the one or more fluid passages (11) allow a surrounding fluid (13) of a patient to be in electrical contact with the one or more conductive filaments (5). There is also disclosed a method of manufacturing an electrode assembly.

Abstract: In one aspect the invention provides an implant conductor lead assembly which includes an electrode lead, and at least one field target conductor. The field target conductor(s) is located adjacent to the electrode lead to mutually couple the field target conductor to the electrode lead. The electrode lead acts to concentrate electromagnetic fields in the vicinity of the implant conductor assembly towards the field target conductor or conductors.

Abstract: In one aspect the invention provides a surgical implant conductor formed from a length of conductive material which exhibits increased radio frequency alternating current resistance. This conductive material defines an exterior surface where at least a portion of the exterior surface of the conductor defines a region with a roughened surface. Preferably the roughening of the exterior surface increases the area of the exterior surface when compared to a non-roughened surface, resulting in a reduction in the effective cross-section area of the conductor used to transport alternating currents.