Paravalvular sealing via extended cuff mechanisms
First Claim
1. A prosthetic heart valve configured to be expanded proximate a native valve of a patient, the prosthetic heart valve comprising:
- a collapsible and expandable stent having a proximal end, a distal end, an annulus section adjacent the proximal end, and a plurality of cells connected to one another in a plurality of annular rows around the stent, the stent having a flow direction extending from the proximal end of the stent toward the distal end of the stent;
a cuff attached to the annulus section of the stent and defining an outward-facing surface;
a plurality of prosthetic valve leaflets attached to the cuff;
a sealing member attached to the cuff and extending from a proximal end of the cuff to a free edge, the sealing member being movable between an extended condition in which the free edge is located proximally of the proximal end of the stent, and an inverted condition in which the free edge is located distally of the proximal end of the stent and a first surface of the sealing member confronts the outward-facing surface of the cuff; and
a sealing ring attached to a second surface of the sealing member opposite the first surface, wherein in the inverted condition of the sealing member and in an expanded use condition of the stent, the sealing ring has a diameter greater than a diameter of the proximal end of the stent.
1 Assignment
0 Petitions
Accused Products
Abstract
A prosthetic heart valve 300 may include a collapsible and expandable stent 306 having a proximal end 302, a distal end 304, an annulus section adjacent the proximal end, and a plurality of cells connected to one another in annular rows around the stent, a cuff 312 attached to the stent, and a sealing member 322 attached to the cuff and extending from a proximal end 313 of the cuff to a free edge 323. The sealing member 322 may be movable between an extended condition in which the free edge 323 is located proximally of the proximal end 302 of the stent 306, and an inverted condition in which the free edge is located distally of the proximal end of the stent and a first surface 324 of the sealing member confronts an outward-facing surface of the cuff. Various mechanisms for moving the sealing member 322 are also described.
160 Citations
17 Claims
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1. A prosthetic heart valve configured to be expanded proximate a native valve of a patient, the prosthetic heart valve comprising:
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a collapsible and expandable stent having a proximal end, a distal end, an annulus section adjacent the proximal end, and a plurality of cells connected to one another in a plurality of annular rows around the stent, the stent having a flow direction extending from the proximal end of the stent toward the distal end of the stent; a cuff attached to the annulus section of the stent and defining an outward-facing surface; a plurality of prosthetic valve leaflets attached to the cuff; a sealing member attached to the cuff and extending from a proximal end of the cuff to a free edge, the sealing member being movable between an extended condition in which the free edge is located proximally of the proximal end of the stent, and an inverted condition in which the free edge is located distally of the proximal end of the stent and a first surface of the sealing member confronts the outward-facing surface of the cuff; and a sealing ring attached to a second surface of the sealing member opposite the first surface, wherein in the inverted condition of the sealing member and in an expanded use condition of the stent, the sealing ring has a diameter greater than a diameter of the proximal end of the stent. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A prosthetic heart valve configured to be expanded proximate a native valve of a patient, the prosthetic heart valve comprising:
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a collapsible and expandable stent having a proximal end, a distal end, an annulus section adjacent the proximal end, and a plurality of cells connected to one another in a plurality of annular rows around the stent, the stent having a flow direction extending from the proximal end of the stent toward the distal end of the stent; a cuff attached to the annulus section of the stent and defining an outward-facing surface; a plurality of prosthetic valve leaflets attached to the cuff; and a sealing member attached to the cuff and extending from a proximal end of the cuff to a free edge, the sealing member being configured to move between an extended condition in which the free edge is located a first distance proximally of the proximal end of the stent, and a compressed condition in which the free edge is located a second distance proximally of the proximal end of the stent. - View Dependent Claims (9, 10, 11)
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12. A method of expanding a prosthetic heart valve proximate a native valve of a patient, the prosthetic heart valve including a stent having proximal and distal ends, a cuff attached to the stent, a sealing member extending from a proximal end of the cuff to a free edge and having a first surface, and a sealing ring attached to a second surface of the sealing member opposite the first surface, the method comprising:
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collapsing the prosthetic heart valve into a delivery device such that the sealing member is in an extended condition in which the free edge is located proximally of the proximal end of the stent; inserting the delivery device into a patient; advancing the delivery device proximate an annulus of the native valve; partially expanding the prosthetic heart valve in a selected position proximate the native valve; moving the sealing member from the extended condition to an inverted condition in which the free edge is located distally of the proximal end of the stent and the first surface of the sealing member confronts an outward-facing surface of the cuff, wherein the moving step includes inverting the sealing ring from an inward-facing condition to an outward facing condition in which the sealing ring has a diameter greater than a diameter of the proximal end of the stent; and fully expanding the prosthetic heart valve. - View Dependent Claims (13, 14, 15, 16, 17)
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Specification