A delivery device for a collapsible prosthetic heart valve includes an outer shaft having a first end and a second end, an inner shaft disposed inside the outer shaft and longitudinally movable relative to the outer shaft, and a distal sheath coupled to the inner shaft and movable with the inner shaft to selectively cover and uncover a compartment for housing the valve. The outer shaft includes a plurality of disks each having at least two hinges to allow articulation of adjacent disks relative to one another, and at least one rib for coupling the adjacent disks to one another.
