Prosthetic heart valve with expandable microspheres
First Claim
1. A prosthetic heart valve for replacement of a native valve comprising:
- a stent having an outer side and an inner side;
a valve assembly mounted to the stent;
a cuff coupled to the stent and at least partially positioned on the outer side of the stent, the cuff including a plurality of pockets sealed from one another; and
a plurality of expandable microspheres confined within the plurality of pockets.
1 Assignment
0 Petitions
Accused Products
Abstract
A prosthetic heart valve includes a valve assembly mounted to an expandable stent. The prosthetic heart valve includes a cuff coupled to the stent. The cuff includes a pocket formed between an outer side and an inner side of the cuff. The pocket includes a plurality of biocompatible and irreversibly expandable microspheres. After implantation of the prosthetic heart valve into a patient, any gaps existing between the cuff and the native heart valve are exposed to bodily fluid, such as blood. The blood enters the pocket of the cuff through pores in the outer side of the cuff. The blood interacts with the microspheres, causing irreversible expansion of the microspheres. The microspheres expand to fill any gaps between the prosthetic heart valve and the native heart tissue, sealing the gaps and preventing leakage through the gaps.
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Citations
17 Claims
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1. A prosthetic heart valve for replacement of a native valve comprising:
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a stent having an outer side and an inner side; a valve assembly mounted to the stent; a cuff coupled to the stent and at least partially positioned on the outer side of the stent, the cuff including a plurality of pockets sealed from one another; and a plurality of expandable microspheres confined within the plurality of pockets. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A prosthetic heart valve for replacement of a native valve comprising:
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a stent having an outer side and an inner side; a valve assembly mounted to the stent; a cuff coupled to the stent and at least partially positioned on the outer side of the stent, the cuff being coupled to the stent by at least one suture, the at least one suture forming a plurality of pockets sealed from one another; and a biocompatible expandable material confined within at least one of the plurality of pockets. - View Dependent Claims (15, 16, 17)
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Specification