Biologically covered heart valve prosthesis
First Claim
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1. A heart valve prosthesis comprising:
- a stent having an annular base portion and a plurality of stent posts extending therefrom, the stent having a fabric covering;
heart valve mounted within the stent to define a stented valve having exteriorized fabric covering;
at least one sheet of biological tissue covering the exteriorized fabric covering of the stented valve; and
a fabric implantation flange extending radially from the stent base portion, the at least one sheet of biological tissue covering the fabric implantation flange, whereby no fabric covering remains exposed.
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Abstract
A system and method are disclosed for covering a heart valve prosthesis with biological tissue, such as pericardium. In one aspect, the prosthesis includes a stent that is covered with a fabric material. A heart valve is mounted within the stent, such as by sutures securing the heart valve to the fabric covering. One or more sheets of biological tissue are applied to the stented prosthesis so as to cover exposed areas of the fabric material.
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Citations
13 Claims
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1. A heart valve prosthesis comprising:
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a stent having an annular base portion and a plurality of stent posts extending therefrom, the stent having a fabric covering;
heart valve mounted within the stent to define a stented valve having exteriorized fabric covering;
at least one sheet of biological tissue covering the exteriorized fabric covering of the stented valve; and
a fabric implantation flange extending radially from the stent base portion, the at least one sheet of biological tissue covering the fabric implantation flange, whereby no fabric covering remains exposed. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A heart valve prosthesis, comprising:
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a support having an inflow annulus and an outflow end;
a valve supported within an interior portion of the support to facilitate a substantially unidirectional flow of blood through the prosthesis;
fabric material that extends around at least a portion of the support and around the valve, the fabric material further comprises an implantation flange that extends around the support at a location spaced from the outflow end, the at least one sheet of biological material covering the implantation flange; and
at least one sheet of biological material around the valve and the stent to cover exposed portions of the fabric material. - View Dependent Claims (9, 10, 11, 12, 13)
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Specification