Cuff stitching reinforcement
First Claim
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1. A prosthetic heart valve, comprising:
- a collapsible and expandable stent having an inflow end at a proximal end, an outflow end at a distal end, an annulus section adjacent the inflow end and an aortic section adjacent the outflow end, the stent including a plurality of struts forming a plurality of cells disposed in rows;
a cuff coupled to the stent so that a flat bottom edge of the cuff lies adjacent the inflow end of the stent, the cuff fully covering each cell of a proximal-most row of cells closest to the inflow end of the stent; and
a pattern of stitches circumferentially disposed around the flat bottom edge of the cuff, the pattern of stitches alternating between stitches of a first type having a first shape and being sewn to the cuff only and stitches of a second type having a second shape different from the first shape and being sewn to both the cuff and the stent.
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Abstract
A prosthetic heart valve includes a collapsible and expandable stent having a proximal end, a distal end, an annulus section adjacent the proximal end and an aortic section adjacent the distal end, the stent including a plurality of struts. A cuff may be coupled to the stent so that a flat, bottom edge of the cuff lies adjacent the proximal end of the stent. A pattern of stitches may be circumferentially disposed around the flat bottom edge of the cuff, the pattern of stitches alternating between stitches sewn to the cuff only and stitches sewn to both the cuff and the stent.
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Citations
13 Claims
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1. A prosthetic heart valve, comprising:
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a collapsible and expandable stent having an inflow end at a proximal end, an outflow end at a distal end, an annulus section adjacent the inflow end and an aortic section adjacent the outflow end, the stent including a plurality of struts forming a plurality of cells disposed in rows; a cuff coupled to the stent so that a flat bottom edge of the cuff lies adjacent the inflow end of the stent, the cuff fully covering each cell of a proximal-most row of cells closest to the inflow end of the stent; and a pattern of stitches circumferentially disposed around the flat bottom edge of the cuff, the pattern of stitches alternating between stitches of a first type having a first shape and being sewn to the cuff only and stitches of a second type having a second shape different from the first shape and being sewn to both the cuff and the stent. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of making a prosthetic heart valve, comprising:
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providing a collapsible and expandable stent having an inflow end at a proximal end, an outflow end at a distal end, an annulus section adjacent the inflow end and an aortic section adjacent the outflow end, the stent including a plurality of struts forming a plurality of cells disposed in rows; coupling a cuff to the stent so that a flat bottom edge of the cuff lies adjacent the inflow end of the stent so that the cuff fully covers each cell of a proximal-most row of cells closest to the inflow end of the stent; and sewing a pattern of stitches circumferentially around the flat bottom edge of the cuff, the pattern of stitches alternating between stitches of a first type having a first shape and sewn to the cuff only and stitches of a second type having a second shape different from the first shape and sewn to both the cuff and the stent. - View Dependent Claims (11, 12, 13)
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Specification