Self-actuating sealing portions for paravalvular leak protection
First Claim
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 plurality of elongated legs, each of the legs having a first end coupled to the stent and a second free end, the legs being configured to transition from an extended configuration to a relaxed configuration;
a valve assembly disposed within the stent, the valve assembly including a plurality of leaflets and a cuff disposed on a portion of the stent and about the plurality of leaflets; and
a sealing portion connected to the plurality of legs, the sealing portion forming a sealing structure upon the transition of the plurality of legs from the extended configuration to the relaxed configuration;
wherein the sealing portion includes a toroidal sealing ring coupled to the plurality of legs, the toroidal sealing ring being configured to move from a first position spaced away from the proximal end of the stent to a second position at least partially disposed over the valve assembly upon the transition of the plurality of legs from the extended configuration to the relaxed configuration.
1 Assignment
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Accused Products
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 plurality of elongated legs each with a first end coupled to the stent and a free end, the elongated legs being configured to transition from an extended configuration to a relaxed configuration. A sealing portion connected to the 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.
275 Citations
17 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 plurality of elongated legs, each of the legs having a first end coupled to the stent and a second free end, the legs being configured to transition from an extended configuration to a relaxed configuration; a valve assembly disposed within the stent, the valve assembly including a plurality of leaflets and a cuff disposed on a portion of the stent and about the plurality of leaflets; and a sealing portion connected to the plurality of legs, the sealing portion forming a sealing structure upon the transition of the plurality of legs from the extended configuration to the relaxed configuration; wherein the sealing portion includes a toroidal sealing ring coupled to the plurality of legs, the toroidal sealing ring being configured to move from a first position spaced away from the proximal end of the stent to a second position at least partially disposed over the valve assembly upon the transition of the 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, 17)
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16. 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 plurality of elongated legs, each of the legs having a first end coupled to the stent and a second free end, the legs being configured to transition from an extended configuration to a relaxed configuration; a valve assembly disposed within the stent, the valve assembly including a plurality of leaflets and a cuff disposed on a portion of the stent and about the plurality of leaflets; and a sealing portion connected to the plurality of legs, the sealing portion forming a sealing structure upon the transition of the plurality of legs from the extended configuration to the relaxed configuration, wherein the sealing portion includes a toroidal sealing ring that is spaced from the stent when the plurality of legs are in the extended configuration.
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Specification