Implantable multi-pole coaxial lead.

摘要

A plurality of conductors (21, 22, 23, 24) are wound to a multi-pole helix. The conductors 2 are individually insulated by a first insulating material 3 (e.g. PTFE), and the insulated conductors 2 are embedded in and axially separated from each other by a second tube-formed insulating material 4 (e.g. silicone rubber). The inner opening of the tube comprises a helically wound stylet guide coil 5, possibly in the form of a multi-pole conductor arrangement. The conductors 2 and 5 could be helically wound, multifilament wires. Preferably, all helically wound arrangements in the lead are wound in the same direction so that the lead is stiff when rotating it in one direction and flexible when rotating it the other way.