Ross Aortic Valve RetractorNewMed® Ross Aortic Valve Retractor is a specialized surgical instrument designed for aortic valve procedures. Measuring 25cm in length overall, it features a size #1, 5/8'' × 5/8'' blade, size #2, 1/2''x 7/8''blade, size #3, 3/4''x 1''blade, size #4, 3/4''x 1 1/8''bl..