Collapsible/expandable prosthetic heart valves with native calcified leaflet retention features
First Claim
Patent Images
1. A prosthetic heart valve comprising:
- an annular frame structure that is adapted for (1) delivery into a patient'"'"'s native heart valve annulus in a circumferentially collapsed condition, and (2) circumferential re-expansion when in the annulus, the frame structure having a first end including an annulus portion and a second end;
a flexible leaflet structure disposed in the frame structure; and
a leaflet restraining structure for pushing radially outwardly on a patient'"'"'s native heart valve leaflets when the frame structure is re-expanded, the leaflet restraining structure having a first end connected at a junction to the annulus portion of the frame structure and a free end disposed between the junction and the second end of the frame structure, the leaftlet restraining structure including a plurality of fingers that are spaced from one another in a direction that is circumferential around the annulus portion, each of the fingers being cantilevered from the annulus portion.
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Abstract
A prosthetic heart valve is circumferentially collapsible for less invasive delivery into a patient. The valve re-expands to operating size at the implant site in the patient. A frame structure of the valve includes restraining structure that can help to push one or more of the patient'"'"'s native heart valve leaflets radially outwardly so that this native leaflet tissue does not interfere with the operation or service life of the prosthetic valve.
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Citations
16 Claims
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1. A prosthetic heart valve comprising:
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an annular frame structure that is adapted for (1) delivery into a patient'"'"'s native heart valve annulus in a circumferentially collapsed condition, and (2) circumferential re-expansion when in the annulus, the frame structure having a first end including an annulus portion and a second end; a flexible leaflet structure disposed in the frame structure; and a leaflet restraining structure for pushing radially outwardly on a patient'"'"'s native heart valve leaflets when the frame structure is re-expanded, the leaflet restraining structure having a first end connected at a junction to the annulus portion of the frame structure and a free end disposed between the junction and the second end of the frame structure, the leaftlet restraining structure including a plurality of fingers that are spaced from one another in a direction that is circumferential around the annulus portion, each of the fingers being cantilevered from the annulus portion. - View Dependent Claims (2, 3, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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4. A collapsible and re-expandable prosthetic heart valve comprising:
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an annular frame structure that is adapted for (1) delivery into a patient'"'"'s native heart valve annulus in a circumferentially collapsed condition, and (2) circumferential re-expansion when in the annulus, the frame structure having a first end including an annulus portion and a second end; a flexible leaflet structure disposed in the frame structure; and a leaflet restraining structure for pushing radially outwardly on a patient'"'"'s native heart valve leaflet when the frame structure is re-expanded, the leaflet restraining structure including a plurality of fingers that are spaced from one another in a direction that is circumferential around the annulus portion of the frame structure, each of the fingers being cantilevered from the annulus portion to a free end of the finger spaced from the annulus portion, wherein the free end of a first of the fingers extends closer to the second end of the frame structure than the free end of a second of the fingers. - View Dependent Claims (5)
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16. A collapsible and re-expandable prosthetic heart valve comprising:
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an expandable annular frame structure having a first end including an annulus portion and a second end, the annulus portion having a series of alternating peaks and valleys; a flexible leaflet structure disposed in the frame structure; and a leaflet restraining structure for pushing radially outwardly on a patient'"'"'s native heart valve leaflet when the frame structure is re-expanded, the leaflet restraining structure having a first end connected to at least one of the valleys at a point closest to the first end of the frame structure and extending toward the second end of the frame structure.
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Specification