Atraumatic interface in an implant delivery device
First Claim
1. A delivery device for a collapsible prosthetic heart valve, the delivery device comprising:
- an operating handle having a housing and a carriage selectively fixed or movable relative to the housing; and
a catheter assembly, including;
an inner shaft around which a compartment is defined, the inner shaft being operatively connected to the housing, the compartment being adapted to receive the valve in an assembled condition;
an outer shaft surrounding at least a portion of the inner shaft, the outer shaft being fixedly connected to the carriage and movable relative to the inner shaft and the housing, the outer shaft having a compressed length and an extended length greater than the compressed length along an axis of elongation of the outer shaft;
a distal sheath fixedly connected to the outer shaft, the distal sheath being movable between a closed condition covering the compartment and an open condition uncovering the compartment for deployment of the valve; and
a mechanism configured to apply a distal force to the outer shaft while the carriage is fixed relative to the housing to stretch the outer shaft from the compressed length to the extended length.
1 Assignment
0 Petitions
Accused Products
Abstract
A delivery device (10) for a collapsible prosthetic heart valve may include an operating handle (20, 220, 320) having a housing (30, 230, 330) and a carriage selectively (40) fixed or movable relative to the housing, and a catheter assembly (16, 116, 216, 416). The catheter assembly may have an inner shaft (26, 126, 226, 326, 426) around which a compartment (23) is defined, an outer shaft (22) surrounding at least a portion of the inner shaft, a distal sheath (24) fixedly connected to the outer shaft, and a mechanism configured to apply a distal force to the outer shaft while the carriage (40) is fixed relative to the housing (30, 230, 330) to stretch the outer shaft from a compressed length to an extended length. The extended length may be greater than the compressed length along an axis of elongation of the outer shaft (22).
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Citations
20 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 having a housing and a carriage selectively fixed or movable relative to the housing; and a catheter assembly, including; an inner shaft around which a compartment is defined, the inner shaft being operatively connected to the housing, the compartment being adapted to receive the valve in an assembled condition; an outer shaft surrounding at least a portion of the inner shaft, the outer shaft being fixedly connected to the carriage and movable relative to the inner shaft and the housing, the outer shaft having a compressed length and an extended length greater than the compressed length along an axis of elongation of the outer shaft; a distal sheath fixedly connected to the outer shaft, the distal sheath being movable between a closed condition covering the compartment and an open condition uncovering the compartment for deployment of the valve; and a mechanism configured to apply a distal force to the outer shaft while the carriage is fixed relative to the housing to stretch the outer shaft from the compressed length to the extended length. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of fully enclosing a compartment of delivery device for implanting a medical device in a patient, the method comprising:
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providing the delivery device having a catheter assembly and an operating handle, the operating handle having a housing and a carriage selectively longitudinally fixed or movable relative to the housing, the catheter assembly including an inner shaft around which a medical device compartment is defined, an outer shaft surrounding at least a portion of the inner shaft, and a distal sheath fixedly connected to the outer shaft, the distal sheath being movable between a fully closed condition covering the compartment and an open condition uncovering the compartment; and applying a distal force to the outer shaft while the carriage and the inner shaft are longitudinally fixed relative to the housing, thereby stretching the outer shaft from a compressed length to an extended length greater than the compressed length and moving the distal sheath to the fully closed condition, such that a distal end of the distal sheath contacts a proximally-facing abutment surface of the delivery device. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification