Mitral heart valve replacement

A method of delivering a prosthetic heart valve, comprising:

• providing a collapsible and expandable stent having a collapsible and expandable valve assembly disposed within the stent, the stent having an inflow end, an outflow end, and a plurality of struts forming a plurality of cells annularly arranged around the stent in at least one row, the stent further including an engaging arm joined to one of the cells adjacent the outflow end of the stent and having a free end extending toward the inflow end of the stent, the engaging arm being pivotally movable between a loaded condition in which the engaging arm is oriented substantially parallel with a longitudinal axis of the stent, a partially-released condition in which the engaging arm extends radially outward from the stent to form a first angle with the longitudinal axis of the stent, and a fully-released condition in which the free end of the engaging arm extends radially outward from the stent to form a second angle with the longitudinal axis of the stent, the first angle being larger than the second angle;
• loading the stent and the valve assembly within a delivery sheath so that the engaging arm is in the loaded condition;
• and
• advancing the delivery sheath to a native valve annulus of a patient.