Transcatheter valve having reduced seam exposure
First Claim
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1. A valve prosthesis comprising:
- a. a self-expanding frame comprising struts and nodes which define a plurality of cells, the frame being generally cylindrical with a longitudinal axis and an inflow end;
b. a valve body supported by the frame and comprising;
i. a plurality of leaflets sewn to a skirt to form joints between each leaflet and the skirt, in which each joint between each leaflet and the skirt is curved to define upper and lower portions of each joint as a whole, in which adjacent joints come together in the upper portion, and an apex of a curve lies in the lower portion,ii. adjoining leaflets sewn together to form commissures which are sewn to the frame downstream of the inflow end, andiii. a bottom edge sewn to the inflow end of the frame, andiv. at least one side seam, each of which side seams extends only between a lower portion of a joint and the bottom edge.
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Abstract
A transcatheter valve having an expandable frame and a collapsible multi-portion skirt within the frame are provided with seams between the portions of the skirt that are located to cooperate with features of the frame and thereby reduce the exposure of the seams.
25 Citations
16 Claims
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1. A valve prosthesis comprising:
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a. a self-expanding frame comprising struts and nodes which define a plurality of cells, the frame being generally cylindrical with a longitudinal axis and an inflow end; b. a valve body supported by the frame and comprising; i. a plurality of leaflets sewn to a skirt to form joints between each leaflet and the skirt, in which each joint between each leaflet and the skirt is curved to define upper and lower portions of each joint as a whole, in which adjacent joints come together in the upper portion, and an apex of a curve lies in the lower portion, ii. adjoining leaflets sewn together to form commissures which are sewn to the frame downstream of the inflow end, and iii. a bottom edge sewn to the inflow end of the frame, and iv. at least one side seam, each of which side seams extends only between a lower portion of a joint and the bottom edge. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A valve prosthesis comprising a self-expanding frame having a longitudinal axis and an inflow end, and comprising a plurality of cells;
- and a valve body having a skirt with a bottom edge sewn to the inflow end of the frame, a plurality of leaflets sewn to the skirt along a joint having upper and lower portions, in which adjacent leaflets come together in the upper portion, and an apex of a curve of the joint as a whole lies in the lower portion, and at least one side seam, each of which side seams extends only between the lower portion and the bottom edge.
- View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
Specification