ACTIVE FIXATION OF NEURAL TISSUE ELECTRODES

摘要

An implantable neural tissue electrode assembly is described which includes a cylindrical electrode lead with an outer surface and a distal end. There is at least one electrode contact on the outer surface of the electrode lead for electrical interaction with adjacent tissue. An active distal end fixation anchor is located at the distal end of the electrode lead and is adapted to fasten to adjacent tissue by rotation in a fastening direction. A passive rear fixation anchor is located on the outer surface of the electrode lead offset from the distal end and is adapted to fasten to adjacent tissue by rotation opposite to the fastening direction. The electrode assembly is adapted such that strain from fastening of the fixation anchors to adjacent tissue is distributed along the electrode lead between the fixation anchors.