Collapsible-expandable prosthetic heart valves with structures for clamping native tissue
First Claim
1. A prosthetic heart valve, comprisinga stent extending in a longitudinal direction between an inflow end and an outflow end and having a length from the inflow end to the outflow end;
- a valve element mounted within the stent; and
a skirt connected to the stent, the skirt having an inside wall overlapping in the longitudinal direction with the valve element, an outside wall, and a space between the inside wall and the outside wall, the inside wall having a first length in the longitudinal direction less than the length of the stent such that an outflow end of the inside wall is positioned at a spaced distance from the outflow end of the stent and the outside wall having a second length in the longitudinal direction less than the first length.
2 Assignments
0 Petitions
Accused Products
Abstract
A prosthetic heart valve is designed to be circumferentially collapsible for less invasive delivery into the patient. At the implant site the valve re-expands to a larger circumferential size, i.e., the size that it has for operation as a replacement for one of the patient'"'"'s native heart valves. The valve includes structures that, at the implant site, extend radially outwardly to engage tissue structures above and below the native heart valve annulus. These radially outwardly extending structures clamp the native tissue between them and thereby help to anchor the prosthetic valve at the desired location in the patient.
556 Citations
26 Claims
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1. A prosthetic heart valve, comprising
a stent extending in a longitudinal direction between an inflow end and an outflow end and having a length from the inflow end to the outflow end; -
a valve element mounted within the stent; and a skirt connected to the stent, the skirt having an inside wall overlapping in the longitudinal direction with the valve element, an outside wall, and a space between the inside wall and the outside wall, the inside wall having a first length in the longitudinal direction less than the length of the stent such that an outflow end of the inside wall is positioned at a spaced distance from the outflow end of the stent and the outside wall having a second length in the longitudinal direction less than the first length. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A prosthetic heart valve, comprising
a stent extending in a longitudinal direction between an inflow end and an outflow end and having a length from the inflow end to the outflow end, the stent having an expanded condition and a collapsed condition; -
a valve element mounted within the stent; and a skirt at the inflow end of the stent, the skirt including an inside wall overlapping in the longitudinal direction with the valve element and an outside wall, the inside wall having a first length in the longitudinal direction less than the length of the stent such that an outflow end of the inside wall is positioned at a spaced distance from the outflow end of the stent and the outside wall having a second length in the longitudinal direction less than the first length, the skirt being radially expandable into engagement within a native valve annulus to impede paravalvular leakage. - View Dependent Claims (15, 16, 17, 18, 19)
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20. A prosthetic heart valve, comprising
a stent extending in a longitudinal direction between an inflow end and an outflow end and having a length from the inflow end to the outflow end, the stent having an expanded condition and a collapsed condition; -
a valve element mounted within the stent; and a skirt connected to the stent, the skirt having an inside wall overlapping in the longitudinal direction with the valve element and an outside wall, the inside wall having a first length in the longitudinal direction less than the length of the stent and the outside wall having a second length in the longitudinal direction less than the first length, in the expanded condition of the stent the outside wall of the skirt being positioned at a radially outward spaced distance from the stent to provide extra sealing capacity to prevent paravalvular leakage.
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21. A prosthetic heart valve, comprising
a stent extending in a longitudinal direction between an inflow end and an outflow end and having a length from the inflow end to the outflow end; -
a valve element mounted within the stent; and a skirt connected to the stent, the skirt having an inside wall overlapping in the longitudinal direction with the valve element, an outside wall and a chamber between the inside wall and the outside wall, the inside wall having a first length in the longitudinal direction less than the length of the stent such that an outflow end of the inside wall is positioned at a spaced distance from the outflow end of the stent and the outside wall having a second length in the longitudinal direction less than the first length. - View Dependent Claims (22, 23, 24, 25, 26)
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Specification