Transcatheter valve prosthesis having a variable shaped cross-section for preventing paravalvular leakage
First Claim
1. A transcatheter valve prosthesis comprising:
- a tubular stent component having a framework defining a lumen therethrough and having a compressed delivery configuration for transcatheter delivery within a vasculature and a deployed configuration for implantation within a native heart valve, wherein the framework has a generally circular cross-section along its length when in the delivery configuration and wherein the framework includes a first portion having a generally circular cross-section, a second portion having a generally triangular cross-section, and a third portion having a generally circular cross-section, the second portion being positioned between the first and third portions; and
a prosthetic valve component disposed within and secured to the framework.
1 Assignment
0 Petitions
Accused Products
Abstract
A transcatheter valve prosthesis includes a self-expanding tubular stent component and a prosthetic valve disposed within and secured to the stent component. The tubular stent component has a proximal portion, a distal portion, and an intermediate portion between the proximal and distal portions. In a compressed delivery configuration, the tubular stent component has a generally circular cross-section along its length. In an expanded deployed configuration, the proximal and distal portions have a generally circular cross-section while the intermediate portion of the stent component has a generally triangular cross-section with three vertexes that are configured to project into three commissural points of a native valve when the valve prosthesis is implanted in situ. The generally triangular transverse cross-section of the valve prosthesis is formed by pulling or extending selected or particular struts of the stent component radially outwards and then applying heat to heat-set the stent component in the deployed configuration.
23 Citations
18 Claims
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1. A transcatheter valve prosthesis comprising:
- a tubular stent component having a framework defining a lumen therethrough and having a compressed delivery configuration for transcatheter delivery within a vasculature and a deployed configuration for implantation within a native heart valve, wherein the framework has a generally circular cross-section along its length when in the delivery configuration and wherein the framework includes a first portion having a generally circular cross-section, a second portion having a generally triangular cross-section, and a third portion having a generally circular cross-section, the second portion being positioned between the first and third portions; and
a prosthetic valve component disposed within and secured to the framework. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
- a tubular stent component having a framework defining a lumen therethrough and having a compressed delivery configuration for transcatheter delivery within a vasculature and a deployed configuration for implantation within a native heart valve, wherein the framework has a generally circular cross-section along its length when in the delivery configuration and wherein the framework includes a first portion having a generally circular cross-section, a second portion having a generally triangular cross-section, and a third portion having a generally circular cross-section, the second portion being positioned between the first and third portions; and
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14. A transcatheter valve prosthesis comprising:
- a tubular self-expanding stent component having a framework defining a lumen therethrough and having a deployed configuration for implantation within a native heart valve, the framework having a proximal portion, a distal portion, and an intermediate portion between the proximal and distal portions, wherein the framework has a variable shaped cross-section when in the deployed configuration in which at least the intermediate portion has a generally triangular cross-section with three vertexes that are configured to project into three commissural points of a native valve when the valve prosthesis is implanted in situ and wherein the proximal and distal portions have a generally circular cross-section when in the deployed configuration; and
a prosthetic valve component disposed within and secured to the stent component, wherein the prosthetic valve component includes three valve leaflets. - View Dependent Claims (15, 16, 17, 18)
- a tubular self-expanding stent component having a framework defining a lumen therethrough and having a deployed configuration for implantation within a native heart valve, the framework having a proximal portion, a distal portion, and an intermediate portion between the proximal and distal portions, wherein the framework has a variable shaped cross-section when in the deployed configuration in which at least the intermediate portion has a generally triangular cross-section with three vertexes that are configured to project into three commissural points of a native valve when the valve prosthesis is implanted in situ and wherein the proximal and distal portions have a generally circular cross-section when in the deployed configuration; and
Specification