A delivery device for implanting a stented prosthetic heart valve, the device comprising: an outer sheath; an inner shaft disposed within the outer sheath; a deflection assembly (80, 400, 450, 550) attached to the inner shaft and including: a plurality of hinge segments (150, 352, 402, 452, 552) including a proximal-most hinge segment (150b, 352b, 402b, 452b, 552b) and a distal-most hinge segment (150a, 352a, 402a, 452a, 552a), a joiner hub (154, 356, 406,456, 566) connected to the inner shaft and interfacing with the proximal-most hinge segment (150b, 352b, 402b, 452b, 552b), and a leading hub (152, 404, 454, 554) interfacing with the distal-most hinge segment (150a, 352a, 402a, 452a, 552a); and a support shaft attached to and extending distally from the leading hub (152, 404, 454, 554); wherein the delivery device is configured to provide a loaded state in which a stented prosthetic heart valve is compressed over the support shaft and retained within a capsule of the outer sheath; and further wherein a hinge region (90, 408, 458, 558) of the deflection assembly (80, 400, 450, 550) is configured to be deflected by a user to change a spatial orientation of the support shaft relative to the inner shaft while the delivery device is in the loaded state. an outer sheath; an inner shaft disposed within the outer sheath; a deflection assembly (80, 400, 450, 550) attached to the inner shaft and including: a plurality of hinge segments (150, 352, 402, 452, 552) including a proximal-most hinge segment (150b, 352b, 402b, 452b, 552b) and a distal-most hinge segment (150a, 352a, 402a, 452a, 552a), a joiner hub (154, 356, 406,456, 566) connected to the inner shaft and interfacing with the proximal-most hinge segment (150b, 352b, 402b, 452b, 552b), and a leading hub (152, 404, 454, 554) interfacing with the distal-most hinge segment (150a, 352a, 402a, 452a, 552a); and a support shaft attached to and extending distally from the leading hub (152, 404, 454, 554); wherein the delivery device is configured to provide a loaded state in which a stented prosthetic heart valve is compressed over the support shaft and retained within a capsule of the outer sheath; and further wherein a hinge region (90, 408, 458, 558) of the deflection assembly (80, 400, 450, 550) is configured to be deflected by a user to change a spatial orientation of the support shaft relative to the inner shaft while the delivery device is in the loaded state. a plurality of hinge segments (150, 352, 402, 452, 552) including a proximal-most hinge segment (150b, 352b, 402b, 452b, 552b) and a distal-most hinge segment (150a, 352a, 402a, 452a, 552a), a joiner hub (154, 356, 406,456, 566) connected to the inner shaft and interfacing with the proximal-most hinge segment (150b, 352b, 402b, 452b, 552b), and a leading hub (152, 404, 454, 554) interfacing with the distal-most hinge segment (150a, 352a, 402a, 452a, 552a); and a support shaft attached to and extending distally from the leading hub (152, 404, 454, 554); wherein the delivery device is configured to provide a loaded state in which a stented prosthetic heart valve is compressed over the support shaft and retained within a capsule of the outer sheath; and further wherein a hinge region (90, 408, 458, 558) of the deflection assembly (80, 400, 450, 550) is configured to be deflected by a user to change a spatial orientation of the support shaft relative to the inner shaft while the delivery device is in the loaded state.