MICROLEAD FOR MULTIPOINT NEUROMODULATION OF THE CENTRAL NERVOUS SYSTEM

摘要

A microlead, of an overall diameter less than 0.5 mm, includes a plurality of at least eight conductor wires individually insulated and twisted together. Each conductor wire includes an electrically conductive core microcable and an insulation layer surrounding the core microcable and having at least one exposed area to form a detection/stimulation electrode of the microlead. The microlead further includes a central support structure shaped as a surface of revolution, which may be free of conductor wires and of central lumen. The conductor wires are configured in one or more layers of twisted peripheral conductor wires carried by the central support structure and circumferentially distributed thereon.

主权项

1. A multipolar microlead for implantation in a cerebral venous system, comprising:
at least eight conductor wires individually insulated and twisted together, each conductor wire comprising:
an electrically conductive core microcable comprising a proximal portion and a distal portion, the proximal portion structured to connect to a pole of a generator of an active implantable medical device; andan insulation layer surrounding the core microcable and having an exposed area formed in the insulation layer at the distal portion of the core microcable, the exposed area exposing a portion of the core microcable and forming an electrode of the microlead; and a central support structure shaped in the form of a surface of revolution, wherein the conductor wires are arranged in a layer of a twisted coil of peripheral conductor wires carried by the central support structure and circumferentially distributed thereon, and wherein the lead has an outer diameter less than 0.5 millimeters.