STENT-VALVES FOR VALVE REPLACEMENT AND ASSOCIATED METHODS AND SYSTEMS FOR SURGERY
1 Assignment
0 Petitions
Accused Products
Abstract
Stent-valves (e.g., single-stent-valves and double-stent-valves), associated methods and systems for their delivery via minimally-invasive surgery, and guide-wire compatible closure devices for sealing access orifices are provided.
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Citations
33 Claims
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1-9. -9. (canceled)
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10. An apparatus comprising:
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a stent-valve comprising a valve component and a stent component, wherein the stent component includes a first section, a second section configured to house the valve component, and a third section comprising at least one attachment element, and wherein the stent component and the valve component are configured with a collapsed configuration for delivery and an expanded configuration after implantation, and a delivery system comprising a stent holder to which the at least one attachment element of the stent-valve is removably attachable and an outer sheath, wherein in a closed position the outer sheath encompasses the stent-valve still attached to the stent holder and thus constrains expansion of the stent-valve, wherein the sheath and the stent holder are configured for relative movement with respect to one another in order to transition from the closed position, to a partially open position, to an open position, wherein in the partially-open position, the stent-valve expands partially but does not detach from the stent holder because the outer sheath still encompasses the at least one attachment element of the stent-valve and the stent holder, while in the open position the outer sheath does not constrain expansion of the stent-valve and thus the stent-valve detaches from the stent holder and expands to the expanded configuration, wherein the stent-valve is returnable from the partially expanded configuration to the collapsed configuration within a patient'"'"'s body, by sliding the outer sheath over the first section of the stent component to recapture the stent-valve within the outer sheath, and wherein the stent-valve is automatically detachable from the delivery system by moving the outer sheath clear of the attachment element and the stent holder. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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11. An apparatus comprising:
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a stent-valve comprising a valve component and a stent component, wherein the stent component includes a first section, a second section configured to house the valve component, and a third section comprising at least one attachment element, the stent component and the valve component configured with a collapsed configuration for delivery and an expanded configuration after implantation, and a delivery system comprising a stent holder to which the at least one attachment element of the stent-valve is removably attachable and an outer sheath, wherein the outer sheath is positionable over the attachment element and the stent holder so as to maintain the stent-valve in the collapsed configuration and attached to the delivery system, wherein the outer sheath is partially removable from at least the first section of the stent-valve, and optionally the second section, to allow partial expansion of the stent-valve within a patient'"'"'s body while the attachment elements of the stent-valve remain constrained by the outer sheath onto the stent holder, the stent-valve is returnable from the partially expanded configuration to the collapsed configuration within a patient'"'"'s body, by sliding the outer sheath over the first section of the stent component to recapture the stent-valve within the outer sheath, and the stent-valve is automatically detachable from the delivery system by moving the outer sheath clear of the attachment element and the stent holder, thereby allowing the stent-valve to self-expand to the expanded configuration.
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24. A method for implanting a stent-valve at an implantation site for cardiac valve replacement, comprising the steps of:
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(a) removably attaching the stent-valve to a delivery device, the stent-valve comprising a valve component and a stent component, the stent component and the valve component configured with a collapsed configuration for delivery and an expanded configuration after implantation; (b) delivering the stent-valve to the implantation site in the collapsed condition; (c) partially expanding the stent-valve while maintaining the stent-valve attached to the delivery device; (d) determining whether the partially expanded stent-valve is positioned correctly at the implantation site; (e) wherein upon the determination being positive, detaching the stent-valve from the delivery device to cause the stent-valve to expand from the partially expanded configuration to the expanded configuration; and (f) wherein upon the determination being negative, returning the stent-valve to the collapsed configuration and repositioning the stent-valve at the implantation site. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33)
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Specification