US Patent 7912555 Implantable medical electrical stimulation lead fixation method and apparatus

An implantable medical electrical lead particularly for stimulation of the sacral nerves comprises a lead body extending between a distal end and a proximal end, and the distal end having at least one electrode of an electrode array extending longitudinally from the distal end toward the proximal end. A fixation mechanism is formed on or integrally with the lead body proximal to the electrode array that is adapted to be implanted in an engage subcutaneous tissue, particularly muscle tissue, to inhibit axial movement of the lead body and dislodgement of the stimulation electrodes.