Staged deployment devices and methods for transcatheter heart valve delivery systems
First Claim
1. A method of delivering a collapsible prosthetic heart valve in a patient, the method comprising:
- 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,wherein the step of using an operating handle to partially deploy the valve includes rotating a deployment actuator to move the carriage assembly in the longitudinal direction, andwherein the catheter assembly further includes a first shaft around which the compartment is defined, the first shaft being fixedly connected to the frame, and an outer shaft connecting the carriage assembly to the distal sheath and at least partially surrounding the first shaft, and the step of using the operating handle to partially deploy the valve includes moving the distal sheath in a proximal direction toward the operating handle.
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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.
188 Citations
13 Claims
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1. 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, wherein the step of using an operating handle to partially deploy the valve includes rotating a deployment actuator to move the carriage assembly in the longitudinal direction, and wherein the catheter assembly further includes a first shaft around which the compartment is defined, the first shaft being fixedly connected to the frame, and an outer shaft connecting the carriage assembly to the distal sheath and at least partially surrounding the first shaft, and the step of using the operating handle to partially deploy the valve includes moving the distal sheath in a proximal direction toward the operating handle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. 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, wherein the step of using an operating handle to partially deploy the valve includes rotating a deployment actuator to move the carriage assembly in the longitudinal direction, and wherein the resheathing lock is a first resheathing lock, and the operating handle further includes a second resheathing lock moveable between a locked position and an unlocked position, the second resheathing lock in the locked position limiting movement of the carriage assembly in the longitudinal direction to a second intermediate position in the movement space, the second resheathing lock in the unlocked position permitting movement of the carriage assembly in the longitudinal direction beyond the second intermediate position, the method further comprising, before the step of using the operating handle to fully deploy the valve, moving the second resheathing lock from the locked position to the unlocked position. - View Dependent Claims (13)
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Specification