VALVE PROSTHESIS
0 Assignments
0 Petitions
Accused Products
Abstract
The present disclosure relates to valve replacement devices that are foldable for catheter-based deployment to the site of implantation, as well as systems for the delivery of valve prostheses, including prostheses having the special characteristics of the disclosed valve replacement devices. The devices include highly effective adhering mechanisms for secure and enduring precision implantation. The adhering mechanisms may employ a unique sealing mechanism that includes a cuff that expands slowly whereby the device is not secured in place until the completion of the implantation procedure. The implanted device, optionally together with the cuff, prevents perivalvular leaks and incorporate an appropriate leaflet system for reliable functioning in situ.
-
Citations
35 Claims
-
1-24. -24. (canceled)
-
25. A vascular reducer comprising:
-
a stent-based platform adapted for percutaneous delivery and anchoring in a heart valve annulus, said stent-based platform comprising an at least partially self-expanding stent and a cuff comprising an absorbent material disposed at least partially circumferentially around the outer and inner surface of said at least partially self-expanding stent, wherein said absorbent material expands by absorption of a fluid to substantially seal said at least partially self-expanding stent at an implantation site, and wherein said expansion of said absorbent material is delayed for a time sufficient to permit positioning of said at least partially self-expanding stent at said implantation site; and a valved-stent prosthetic device adapted to be percutaneously delivered to the heart valve annulus for mounting in said stent-based platform. - View Dependent Claims (26, 27, 28, 29, 30)
-
-
31. A vascular reducer comprising:
-
a stent-based platform adapted for percutaneous delivery and anchoring in a heart valve annulus, said stent-based platform comprising an at least partially self-expanding stent and a cuff comprising an absorbent material that is a crosslinked hydrogel comprising poly(acrylic acid) and a poly(ethylene glycol) that disposed at least partially circumferentially around the outer surface of said at least partially self-expanding stent, wherein said absorbent material expands by absorption of a fluid to substantially seal said at least partially self-expanding stent at an implantation site, and wherein said expansion of said absorbent material is delayed for a time sufficient to permit positioning of said at least partially self-expanding stent at said implantation site; and a valved-stent prosthetic device adapted to be percutaneously delivered to the heart valve annulus for mounting in said stent-based platform. - View Dependent Claims (32, 33, 34, 35)
-
Specification