Cyberonics, Inc. (Cyberonics) is a medical device company. The Company is engaged in the design, development, sales and marketing of implantable medical devices that provide a neuromodulation therapy, vagus nerve stimulation therapy (VNS Therapy), for the treatment of refractory epilepsy and treatment-resistant depression (TRD) and other device solutions for the management of epilepsy.VNS Therapy System includes an implantable pulse generator to provide stimulation to the vagus nerve; a lead that connects the generator to the vagus nerve; equipment to assist with implantation surgery; equipment to assist with setting the stimulation parameters for each patient; instruction manuals, and magnets to suspend or induce stimulation manually. The VNS Therapy pulse generator and lead are surgically implanted into patients generally during an outpatient procedure. The VNS Therapy System consists of a pulse generator, a bipolar lead, a programming wand and software and a tunneling tool.