Heart valve prosthesis
First Claim
Patent Images
1. A natural tissue heart valve prosthesis having inflow and outflow ends primarily intended for replacing a patient'"'"'s defective heart valve, said prosthesis comprising:
- a tanned natural tissue heart valve having a generally cylindrical valve wall, an inflow end, and a plurality of cusps attached adjacent said inflow end of said valve and extending to a position proximal said outflow end of said valve;
a stent having an inflow end, an outflow end, an annular base portion proximal said stent inflow end and at least three generally elongated posts extending from said stent base in a generally parallel and spaced apart relation that generally corresponds to the position of said cusps, said stent having interior and exterior portions, and said valve attached within said stent interior portion such that said inflow end of said valve is positioned adjacent said inflow end of said stent with said outflow end of said valve proximal said posts;
a generally nonabsorbent textile material covering at least a portion of said stent; and
a pericardium strip having first and second ends attached along at least a portion of said textile material of said outflow end of said stent to inhibit abrasion between said cusps and said textile material covering said stent.
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Accused Products
Abstract
A natural tissue heart valve prosthesis mounted in a cloth-covered, generally anatomical stent is disclosed. The prosthesis includes an annular implantation flange attached to the exterior base portion of the stent between the inflow end and the outflow end of the stent base and a pericardium strip attached to at least a portion of the outflow rails of the prosthesis to generally inhibit abrasion between the cusps of the valve and the cloth covering of the stent structure.
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Citations
21 Claims
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1. A natural tissue heart valve prosthesis having inflow and outflow ends primarily intended for replacing a patient'"'"'s defective heart valve, said prosthesis comprising:
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a tanned natural tissue heart valve having a generally cylindrical valve wall, an inflow end, and a plurality of cusps attached adjacent said inflow end of said valve and extending to a position proximal said outflow end of said valve; a stent having an inflow end, an outflow end, an annular base portion proximal said stent inflow end and at least three generally elongated posts extending from said stent base in a generally parallel and spaced apart relation that generally corresponds to the position of said cusps, said stent having interior and exterior portions, and said valve attached within said stent interior portion such that said inflow end of said valve is positioned adjacent said inflow end of said stent with said outflow end of said valve proximal said posts; a generally nonabsorbent textile material covering at least a portion of said stent; and a pericardium strip having first and second ends attached along at least a portion of said textile material of said outflow end of said stent to inhibit abrasion between said cusps and said textile material covering said stent. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A valve holder primarily intended for mitral valve replacement, said valve holder comprising:
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an inner base portion having a central axis; a generally annular ring having an upper side and a lower side, said lower side dimensioned and configured for a generally mating relationship with a heart valve prosthesis inflow base portion; at least two spokes attached to and extending between said annular ring and said inner base portion, each said spoke including at least one hole formed through said valve holder proximal said attachment of said annular ring and said spoke; and at least one retaining tab extending upwardly from said inner base portion spaced from and surrounding said base portion axis intermediate an adjacent pair of said spokes. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
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Specification