Clinical Evaluation of the Infinity Deep Brain Stimulation System

The purpose of this post-market study is to characterize the clinical performance of the Infinity Deep Brain Stimulation (DBS) system, including the Implantable Pulse Generator (IPG), directional DBS leads, extensions, iPad clinician programmer, iPod patient controller and related system components. Participants in the PROGRESS study are not assigned to interventional therapy groups. Participants in the PROGRESS study are followed in an observational format as they receive omnidirectional and then directional DBS programming that is part of routine medical care. Data on symptoms are collected during two different stages of programming, and those outcomes compared to assess the effect of omnidirectional or directional programming.