Low-profile heart valve and delivery system
First Claim
1. A prosthetic valve, comprising:
- a metal stent defining a lumen through said stent;
a valve portion comprising one or more leaflets, wherein the one or more leaflets each comprises a free end and a secured end, and a metal leaflet frame, wherein the secured end of the one or more leaflets is secured to the leaflet frame; and
a fabric flexible sleeve, wherein the stent is not directly connected to the leaflet frame and the flexible fabric sleeve couples the stent to the leaflet frame, further wherein the flexible fabric sleeve is sutured to the leaflet frame and is sutured to the stent;
wherein the prosthetic valve is transformable from a delivery configuration in which at least a portion of the one or more leaflets is positioned outside the lumen of the stent, to an operating configuration in which at least said portion of the one or more leaflets is positioned within the lumen of the stent;
wherein the secured end of the one or more leaflets is moveable axially with respect to the stent when the prosthetic valve is transformed from the delivery configuration to the operating configuration.
1 Assignment
0 Petitions
Accused Products
Abstract
Disclosed replacement heart valves can be designed to be delivered to a native valve site while crimped on a delivery catheter. The crimped profile of the replacement valve can be minimized by, for example, separating a frame or stent structure from a leaflet structure, along the axial direction. Disclosed replacement valves can be transitioned from a delivery configuration, in which the crimped profile can be minimized, to an operating configuration. The replacement valve can be fully assembled in both the delivery and operating configurations. In some embodiments, the leaflets can be positioned outside of the stent in the delivery configuration, and positioned inside of the stent lumen in the operating configuration. Disclosed replacement valves can include a flexible sleeve coupling the leaflets to the stent and facilitating the transition to the operating configuration. Methods of implanting said replacement valves are also disclosed.
19 Citations
17 Claims
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1. A prosthetic valve, comprising:
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a metal stent defining a lumen through said stent; a valve portion comprising one or more leaflets, wherein the one or more leaflets each comprises a free end and a secured end, and a metal leaflet frame, wherein the secured end of the one or more leaflets is secured to the leaflet frame; and a fabric flexible sleeve, wherein the stent is not directly connected to the leaflet frame and the flexible fabric sleeve couples the stent to the leaflet frame, further wherein the flexible fabric sleeve is sutured to the leaflet frame and is sutured to the stent; wherein the prosthetic valve is transformable from a delivery configuration in which at least a portion of the one or more leaflets is positioned outside the lumen of the stent, to an operating configuration in which at least said portion of the one or more leaflets is positioned within the lumen of the stent; wherein the secured end of the one or more leaflets is moveable axially with respect to the stent when the prosthetic valve is transformed from the delivery configuration to the operating configuration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A prosthetic valve, comprising:
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a radially collapsible and expandable metal frame; and a leaflet structure comprising a plurality of leaflets, a plurality of metal reinforcement elements, and a plurality of metal leaflet-supporting members; and a flexible fabric sleeve, wherein the metal frame is not directly connected to the plurality of metal reinforcement elements and the plurality of metal leaflet-supporting members and the flexible fabric sleeve couples the frame to the leaflet structure; wherein the frame is coupled to the leaflet structure such that the leaflets are positioned at least substantially outside of the frame, and wherein a portion of each of the leaflets is positioned in a respective gap formed between a respective reinforcement element and a respective leaflet-supporting member; further wherein the leaflet structure is moveable axially with respect to the frame. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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Specification