On, X life technologies is recognized as a premier manufacturer of artificial heart valve replacement and repair products. On, X aortic and mitral prosthetic valves are fda approved and are known to be safely implanted in approximately 200, 000 patients worldwide. The on, X aortic heart valve stands as the sole mechanical valve fda approved and clinically proven to be safer with less anticoagulation. In a prospective randomized clinical trial, On, X aortic heart valve patients with a reduced warfarin dose inr 1. 5 2. 0 had 65% fewer harmful bleeding events without a rise in stroke risk. On, X mechanical heart valves crafted from the most advanced material across the field pure pyrolytic carbon. The advanced design and materials make it the best lifelong heart valve replacement option available today.