A delivery device for percutaneously deploying a stented prosthetic heart valve including a stent frame to which a valve structure is attached, the device comprising: a delivery sheath assembly terminating at a distal end and defining a lumen; an inner shaft slidably disposed within the lumen; and a capture assembly for selectively coupling a prosthetic heart valve relative to the inner shaft, the capture assembly including: a spindle attached to the inner shaft, the spindle defining at least one longitudinal capture slot, at least one biasing member disposed within the at least one capture slot and configured to self-transition from a deflected condition to a normal condition, wherein a radial projection of the biasing member relative to a centerline of the inner shaft is greater in the normal condition than in the deflected condition; wherein the delivery device is configured to provide: a delivery state in which the delivery sheath assembly retains a stented prosthetic heart valve over the inner shaft via the at least one capture slot, including a portion of a prosthetic heart valve engaged within the at least one capture slot and the at least one biasing member forced to the deflected condition, a deployment state in which the distal end of the delivery sheath assembly is withdrawn from the at least one capture slot, including the at least one biasing member self-transitioning toward the normal condition to exteriorly close at least a portion of the capture slot. a delivery sheath assembly terminating at a distal end and defining a lumen; an inner shaft slidably disposed within the lumen; and a capture assembly for selectively coupling a prosthetic heart valve relative to the inner shaft, the capture assembly including: a spindle attached to the inner shaft, the spindle defining at least one longitudinal capture slot, at least one biasing member disposed within the at least one capture slot and configured to self-transition from a deflected condition to a normal condition, wherein a radial projection of the biasing member relative to a centerline of the inner shaft is greater in the normal condition than in the deflected condition; a spindle attached to the inner shaft, the spindle defining at least one longitudinal capture slot, at least one biasing member disposed within the at least one capture slot and configured to self-transition from a deflected condition to a normal condition, wherein a radial projection of the biasing member relative to a centerline of the inner shaft is greater in the normal condition than in the deflected condition; wherein the delivery device is configured to provide: a delivery state in which the delivery sheath assembly retains a stented prosthetic heart valve over the inner shaft via the at least one capture slot, including a portion of a prosthetic heart valve engaged within the at least one capture slot and the at least one biasing member forced to the deflected condition, a deployment state in which the distal end of the delivery sheath assembly is withdrawn from the at least one capture slot, including the at least one biasing member self-transitioning toward the normal condition to exteriorly close at least a portion of the capture slot. a delivery state in which the delivery sheath assembly retains a stented prosthetic heart valve over the inner shaft via the at least one capture slot, including a portion of a prosthetic heart valve engaged within the at least one capture slot and the at least one biasing member forced to the deflected condition, a deployment state in which the distal end of the delivery sheath assembly is withdrawn from the at least one capture slot, including the at least one biasing member self-transitioning toward the normal condition to exteriorly close at least a portion of the capture slot.