The six different models of tricuspid annuloplasty devices that have been implanted between 1999 and 2014 at the authors' institution and the corresponding period of implantation. Asterisk denotes Medtronic, Minneapolis, MN, USA. Dagger denotes Koehler, Bellshill, Scotland. Double dagger denotes Sorin-CarboMedics, Austin, TX, USA. Sections denote Edwards Lifesciences, Irvine, CA, USA.