Patent ID: 8778019

Claim:
A delivery device for a collapsible prosthetic heart valve, the delivery device comprising: an operating handle, including: a frame defining a movement space therein; a carriage assembly moveable in a longitudinal direction within the movement space; a coupler; and a deployment actuator constrained relative to the coupler in the longitudinal direction, the coupler having a locked condition in which the coupler is connected to the frame in a fixed position and in which rotation of the deployment actuator moves the carriage assembly in the longitudinal direction relative to the coupler with a mechanical advantage, and an unlocked condition in which the coupler, the deployment actuator, and the carriage assembly are movable together in the longitudinal direction within the movement space without a mechanical advantage, the coupler being operatively connected to the carriage assembly for movement therewith, the coupler being selectively lockable to the frame in any of a plurality of fixed positions in the longitudinal direction; and a catheter assembly, including: a first shaft around which a compartment is defined, the first shaft being operatively connected to the frame, the compartment being adapted to receive the valve in an assembled condition; and a distal sheath operatively connected to the carriage assembly, the distal sheath being moveable between a closed condition adapted to maintain the valve in the assembled condition and an open condition adapted to fully deploy the valve, wherein movement of the carriage assembly in the longitudinal direction in the movement space moves the distal sheath between the closed condition and the open condition.