PNEUMATICALLY POWER-ASSISTED TAVI DELIVERY SYSTEM

摘要

A delivery device for a collapsible prosthetic heart valve may include an operating handle and a catheter assembly. The handle may include a housing, a piston cylinder, a piston longitudinally slidable within the piston cylinder, the piston and the piston cylinder together defining at least one pressure chamber, a deployment actuator coupled to the housing and rotatable relative thereto, and a pneumatic switch adapted to provide a pressurized fluid to the pressure chamber to apply a longitudinal force to the piston. The catheter assembly may include a first shaft around which a valve-receiving compartment is defined, the first shaft being operatively connected to the housing, and a distal sheath operatively connected to the piston, the distal sheath being moveable between a closed condition covering the compartment and an open condition uncovering the compartment. Longitudinal movement of the piston may move the distal sheath between the closed and open conditions.

主权项

1. A delivery device for a collapsible prosthetic heart valve, the delivery device comprising:
an operating handle, including:
a housing defining a movement space therein;a piston cylinder disposed within the movement space;a piston slidable in a longitudinal direction within the piston cylinder, the piston and the piston cylinder together defining at least one pressure chamber;a deployment actuator coupled to the housing and rotatable relative to the housing; anda pneumatic switch in fluid communication with the pressure chamber, the pneumatic switch adapted to provide a pressurized fluid to the pressure chamber to apply a force to the piston 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 housing, the compartment being adapted to receive the valve in an assembled condition; anda distal sheath operatively connected to the piston, the distal sheath being moveable between a closed condition covering the compartment and an open condition uncovering the compartment for deployment of the valve, wherein movement of the piston in the longitudinal direction in the piston cylinder moves the distal sheath between the closed condition and the open condition.