 - Eligible devices include all of the following: 1 approved devices for any indications; 2 Intermacs-linked trial of investigational device or approved device for investigational indications, for which data will be entered via the Intermacs framework; 3 external trial of investigational device or approved device for investigational indications, for which data will be collected by an external group; 4 compassionate use of investigational devices or approved devices outside of approved indications or clinical trials 