Self-actuating sealing portions for paravalvular leak protection
First Claim
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1. A prosthetic heart valve for replacing a native valve, comprising:
- a collapsible and expandable stent having a proximal end and a distal end;
a valve assembly disposed within the stent, the valve assembly including a plurality of leaflets;
a first plurality of legs coupled to the stent and transitionable from an extended configuration to a relaxed configuration, each of the first plurality of legs having a free end extending toward the distal end of the stent in the extended configuration and each free end positioned proximal to the distal end of the stent in the extended configuration;
a second plurality of legs coupled to the proximal end of the stent and transitionable from an extended configuration to a relaxed configuration;
a first sealing portion connected to the first plurality of legs and forming a sealing structure upon the transition of the first plurality of legs from the extended configuration to the relaxed configuration; and
a second sealing portion connected to the second plurality of legs and forming a sealing structure upon the transition of the second plurality of legs from the extended configuration to the relaxed configuration.
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Abstract
A prosthetic heart valve for replacing a native valve includes a collapsible and expandable stent having a proximal end and a distal end, and a valve assembly including a plurality of leaflets, the valve assembly being disposed within the stent. The heart valve further includes a first plurality of elongated legs coupled to the stent and transitionable from an extended configuration to a relaxed configuration. A first sealing portion connected to the first plurality of legs forms a sealing structure when the legs transition to the relaxed configuration to reduce perivalvular leakage between the implanted valve and surrounding tissue.
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Citations
18 Claims
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1. A prosthetic heart valve for replacing a native valve, comprising:
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a collapsible and expandable stent having a proximal end and a distal end; a valve assembly disposed within the stent, the valve assembly including a plurality of leaflets; a first plurality of legs coupled to the stent and transitionable from an extended configuration to a relaxed configuration, each of the first plurality of legs having a free end extending toward the distal end of the stent in the extended configuration and each free end positioned proximal to the distal end of the stent in the extended configuration; a second plurality of legs coupled to the proximal end of the stent and transitionable from an extended configuration to a relaxed configuration; a first sealing portion connected to the first plurality of legs and forming a sealing structure upon the transition of the first plurality of legs from the extended configuration to the relaxed configuration; and a second sealing portion connected to the second plurality of legs and forming a sealing structure upon the transition of the second plurality of legs from the extended configuration to the relaxed configuration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification