Desirable characteristics of a replacement valve
Non-obstructive, Closure is prompt and complete
Infection-resistant, biocompatible, Chemically inert
Non-thrombogenic
Non-haemolytic
Easily and permanently inserted into an appropriate [physiologic] site
Interface between prosthesis and patient heals appropriately
Not annoying to the patient (noise-free)
Strong, durable, and fatigue resistant
Mechanical Heart Valves