COLLAPSIBLE AND RE-EXPANDABLE PROSTHETIC HEART VALVE CUFF DESIGNS AND COMPLEMENTARY TECHNOLOGICAL APPLICATIONS
First Claim
1. A prosthetic heart valve for replacement of a native heart valve having a native valve annulus comprising:
- (a) a stent body including a generally tubular annulus region having a proximal-to-distal axis and having a radially collapsed condition a radially expanded condition, the annulus region increasing in diameter during transition from the radially collapsed condition to the radially expanded condition;
(b) one or more prosthetic valve elements mounted to the stent body and operative to allow flow in the proximal direction through the annulus region but to substantially block flow in the proximal direction through the annulus region; and
(c) a cuff secured to the stent body, the cuff comprising(i) a first cuff portion covering at least a portion of the annulus region for disposition at said native valve annulus, the first cuff portion having a first diameter when the annulus region is in the radially expanded condition and(ii) a second cuff portion proximal to the first cuff portion, the second cuff portion having a second diameter when the annulus region is in the radially expanded condition, the second diameter being greater than the first diameter, the second cuff portion being adapted for engagement with native tissue proximal to the native valve annulus.
3 Assignments
0 Petitions
Accused Products
Abstract
A prosthetic heart valve is provided with a cuff (85, 285, 400) having features which promote sealing with the native tissues even where the native tissues are irregular. The cuff may include a portion (90) adapted to bear on the LVOT when the valve is implanted in a native aortic valve. The valve may include elements (210, 211, 230, 252, 253) for biasing the cuff outwardly with respect to the stent body when the stent body is in an expanded condition. The cuff may have portions of different thickness (280) distributed around the circumference of the valve in a pattern matching the shape of the opening defined by the native tissue. All or part (402) of the cuff may be movable relative to the stent during implantation.
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Citations
3 Claims
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1. A prosthetic heart valve for replacement of a native heart valve having a native valve annulus comprising:
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(a) a stent body including a generally tubular annulus region having a proximal-to-distal axis and having a radially collapsed condition a radially expanded condition, the annulus region increasing in diameter during transition from the radially collapsed condition to the radially expanded condition; (b) one or more prosthetic valve elements mounted to the stent body and operative to allow flow in the proximal direction through the annulus region but to substantially block flow in the proximal direction through the annulus region; and (c) a cuff secured to the stent body, the cuff comprising (i) a first cuff portion covering at least a portion of the annulus region for disposition at said native valve annulus, the first cuff portion having a first diameter when the annulus region is in the radially expanded condition and (ii) a second cuff portion proximal to the first cuff portion, the second cuff portion having a second diameter when the annulus region is in the radially expanded condition, the second diameter being greater than the first diameter, the second cuff portion being adapted for engagement with native tissue proximal to the native valve annulus. - View Dependent Claims (2, 3)
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Specification