Stent-valves for valve replacement and associated methods and systems for surgery
First Claim
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1. A method for implanting a stent-valve at an implantation site for cardiac valve replacement, comprising the steps of:
- providing a stent-valve and a delivery device, the delivery device including a stent-holder and an outer-sheath;
removably attaching the stent-valve to the delivery device by way of the stent-holder and the outer sheath, wherein;
the stent-valve comprises a valve component, and a stent component including at least two integral attachment elements provided therewith,the stent component and the valve component configured with a collapsed configuration for delivery and an expanded configuration after implantation,the at least two attachment elements are matably attached to the stent-holder, such that the stent-valve is held in position with respect to the delivery device by the stent-holder,in a closed position, the outer sheath encompasses the stent-valve and constrains expansion of the stent-valve, andthe outer sheath is configured for distal movement relative to the stent holder in order to transition from the closed position, to a partially-open position, to an open position;
delivering the stent-valve to the implantation site in the collapsed condition;
partially expanding the stent-valve while maintaining attachment of the at least two attachment elements to the stent-holder, such that the stent-holder holds the stent-valve in position with respect to the delivery device;
determining whether the partially expanded stent-valve is positioned correctly at the implantation site;
wherein upon the determination being positive, allowing the at least two attachment elements to detach from the stent-holder to cause the stent-valve to expand from the partially expanded configuration to the expanded configuration; and
wherein upon the determination being negative, returning the stent-valve to the collapsed configuration and repositioning the stent-valve at the implantation site.
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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
11 Claims
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1. A method for implanting a stent-valve at an implantation site for cardiac valve replacement, comprising the steps of:
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providing a stent-valve and a delivery device, the delivery device including a stent-holder and an outer-sheath; removably attaching the stent-valve to the delivery device by way of the stent-holder and the outer sheath, wherein; the stent-valve comprises a valve component, and a stent component including at least two integral attachment elements provided therewith, the stent component and the valve component configured with a collapsed configuration for delivery and an expanded configuration after implantation, the at least two attachment elements are matably attached to the stent-holder, such that the stent-valve is held in position with respect to the delivery device by the stent-holder, in a closed position, the outer sheath encompasses the stent-valve and constrains expansion of the stent-valve, and the outer sheath is configured for distal movement relative to the stent holder in order to transition from the closed position, to a partially-open position, to an open position; delivering the stent-valve to the implantation site in the collapsed condition; partially expanding the stent-valve while maintaining attachment of the at least two attachment elements to the stent-holder, such that the stent-holder holds the stent-valve in position with respect to the delivery device; determining whether the partially expanded stent-valve is positioned correctly at the implantation site; wherein upon the determination being positive, allowing the at least two attachment elements to detach from the stent-holder to cause the stent-valve to expand from the partially expanded configuration to the expanded configuration; and 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 (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification