STAGED DEPLOYMENT DEVICES AND METHODS FOR TRANSCATHETER HEART VALVE DELIVERY SYSTEMS
First Claim
1. 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; and
a first resheathing lock having a locked position and an unlocked position, the first resheathing lock in the locked position limiting movement of the carriage assembly in the longitudinal direction to a first intermediate position in the movement space, and the first resheathing lock in the unlocked position permitting movement of the carriage assembly in the longitudinal direction beyond the first intermediate position in the movement space; and
a catheter assembly, including;
a first shaft around which a compartment is defined, the first shaft being fixedly connected to one of the frame or the carriage assembly, 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 to the first intermediate position moves the distal sheath to a condition between the closed condition and the open condition so that the valve is not fully deployed.
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Accused Products
Abstract
A delivery device for a collapsible heart valve includes an operating handle, including a frame defining a movement space therein, a carriage assembly moveable within the movement space, and a first resheathing lock having a locked position and an unlocked position. The delivery device further includes a catheter assembly, including a first shaft around which a valve-receiving compartment is defined, the first shaft being fixedly connected to one of the frame or the carriage assembly, and a distal sheath operatively connected to the carriage assembly. The distal sheath is moveable between a closed condition adapted to maintain the valve in the compartment and an open condition adapted to fully deploy the valve. With the resheathing lock in the locked position, the distal sheath is unable to move to the open condition to fully deploy the valve.
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Citations
21 Claims
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1. A delivery device for a collapsible prosthetic heart valve, the delivery device comprising:
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an operating handle, including; a frame defining a movement space therein; a carriage assembly moveable in a longitudinal direction within the movement space; and a first resheathing lock having a locked position and an unlocked position, the first resheathing lock in the locked position limiting movement of the carriage assembly in the longitudinal direction to a first intermediate position in the movement space, and the first resheathing lock in the unlocked position permitting movement of the carriage assembly in the longitudinal direction beyond the first intermediate position in the movement space; and a catheter assembly, including; a first shaft around which a compartment is defined, the first shaft being fixedly connected to one of the frame or the carriage assembly, 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 to the first intermediate position moves the distal sheath to a condition between the closed condition and the open condition so that the valve is not fully deployed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system for delivery of a collapsible prosthetic heart valve, the system comprising:
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a collapsible prosthetic heart valve; an operating handle, including; a frame defining a movement space therein; a carriage assembly moveable in a longitudinal direction within the movement space; and a first resheathing lock having a locked position and an unlocked position, the resheathing lock in the locked position limiting movement of the carriage assembly in the longitudinal direction to a first intermediate position in the movement space, and the first resheathing lock in the unlocked position permitting movement of the carriage assembly in the longitudinal direction beyond the first intermediate position in the movement space; and a catheter assembly, including; a first shaft around which a compartment is defined, the first shaft being fixedly connected to one of the frame or the carriage assembly, the valve being mounted in the compartment 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 to the first intermediate position moves the distal sheath to a condition between the closed condition and the open condition so that the valve is not fully deployed. - View Dependent Claims (12, 13, 14)
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15. A method of delivering a collapsible prosthetic heart valve in a patient, the method comprising:
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providing a delivery device having a catheter assembly and an operating handle, the catheter assembly including a compartment adapted to receive the valve in an assembled condition, the operating handle including a frame defining a movement space therein, a carriage assembly moveable in a longitudinal direction within the movement space, and a resheathing lock having a locked position limiting movement of the carriage assembly in the longitudinal direction to a first intermediate position in the movement space and an unlocked position permitting movement of the carriage assembly in the longitudinal direction beyond the first intermediate position in the movement space; loading the valve into the compartment of the catheter assembly, the compartment and the valve being covered by a distal sheath of the catheter assembly; inserting the catheter assembly into the patient; positioning the valve at a target location within the patient; using the operating handle to partially deploy the valve by moving the carriage assembly in the longitudinal direction to the first intermediate position in the movement space; moving the resheathing lock from the locked position to the unlocked position; and using the operating handle to fully deploy the valve by moving the carriage assembly in the longitudinal direction beyond the first intermediate position in the movement space. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification