The Mechanical valve from St.Jude Medical incorporates a pivot guard proprietary design and offers great clinical advantages of a significant nature. The mechanical valve boasts of an illustrious design performance that spans 30 years, has more than 1000 peer-review articles and has contributed to over 1.9million global implants. The HP valved graft from SJM Masters incorporates the Gelweave Valsalva Technology and offers upstream leaflet placement through its unique and time tested pivot guard design. This results in an opening angle of 85 degrees. The Medical Heart Valve from St.Jude Medical which incorporates the pivot guard proprietary design, has been reviewed over a 1000 times by peers and has offered excellent Hemodynamic performance through 1.5million implants globally. It has an orifice area that is very effective and 33% larger. Mismatch for patient prosthesis is minimized. Natural anatomy is mimicked through the Valsalva patented design. 30% of horizontal compliance is provided. Coronary tension is reduced and suturing is eased.