Table 4: Transcatheter Mitral Valve Replacement Characteristics.

Device	Deployment	Shape	Anchoring Mechanism	Implantation Approach	Valve Position	Key Measurements	CE Mark
Tendyne	Self-expandable	D-shaped outer stent	Apical tether	Transapical	Intra-annular	SL and IC distances	2020
Intrepid	Self-expandable	Circular	Radial force, leaflet engagement by outer stent cleats	Transapical	Intra-annular	Perimeter, SL and IC distances	No
TIARA	Self-expandable	D-shaped	3 ventricular anchoring tabs	Transapical	Intra-annular	Perimeter, IC distances	No
Evoque	Self-expandable	Circular	Circumferential anchors for both ventricular and atrium	Transapical Transseptal	Supra-annular	Maximum diameter	No
Sapien M3	Self-expandable	Circular	Nitinol docking	Transseptal	Intra-annular	Perimeter, IC distances	No
HighLife	Self-expandable	Circular	Valve-in-ring	Transapical (Transseptal implantation of ring)	Intra-annular	Maximum diameter	No
AltaValve	Self-expandable	Circular	Atrial anchoring, suspended valve	Transapical Transseptal	Supra-annular	No

IC = intercommissural; SL = septolateral.