This post-market study is a single-arm, prospective, multi-center Registry. It is designed to assess 36-month safety and effectiveness of this FDA approved product in a post-approval setting, and to support the continued assessment of Spiration Valve System therapy for the treatment of severe emphysema in the United States.
Subjects who are eligible and consent to be in this study, will be monitored for outcome data from baseline through 3 years post-first implant.