1. St Jude Medical Regent valve
Robert W. Emery, MD 
The Journal of Thoracic and Cardiovascular Surgery 
Volume 131, Issue 3, Pages (March 2006)
DOI: /j.jtcvs
Copyright © 2005 The American Association for Thoracic Surgery Terms and Conditions

2. Figure 1
The St. Jude Medical HP valve (left) is seated intra-annular while the Regent sewing ring supra-annular. The pivot guard on the Regent must be positioned properly intra-annular.
The Journal of Thoracic and Cardiovascular Surgery  , DOI: ( /j.jtcvs )
Copyright © 2005 The American Association for Thoracic Surgery Terms and Conditions