PERCUTANEOUS VALVE PROSTHESIS AND SYSTEM AND METHOD FOR IMPLANTING THE SAME
First Claim
1. A method for delivering a heart valve prosthesis to a native valve annulus, comprising:
- delivering a self-expanding valve cage stent to the native valve annulus, the valve cage stent including opposing anchoring portions for engaging surrounding tissue;
expanding the valve cage stent within the native valve annulus;
engaging tissue of the native valve annulus with the opposing anchoring portions, wherein the opposing anchoring portions extend radially outwardly from a longitudinal axis of the valve cage stent; and
positioning at least a portion of a tissue valve within the valve cage stent, the tissue valve comprising an expandable and compressible valve frame made from a memory metal; and
expanding the tissue valve and coupling the tissue valve to the valve cage stent;
wherein the valve cage stent is implanted by use of a first catheter to provide a stable support structure and wherein the tissue valve is implanted within the valve cage stent by use of a second catheter.
1 Assignment
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Accused Products
Abstract
A method for delivering a heart valve prosthesis to a native valve annulus comprises expanding an expandable frame at the native valve annulus and positioning a replacement heart valve within the expandable frame. The expandable frame preferably includes a first anchoring portion that is positioned on a first side of the native valve annulus and a second anchoring portion that is positioned on a second side of the native valve annulus. The first anchoring portion engages tissue on the first side of the native valve annulus and the second anchoring portion engages tissue on the second side of the native valve annulus for securing the expandable frame to the native valve annulus. The replacement heart valve comprises a plurality of leaflets for replacing the function of the native valve.
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15 Claims
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1. A method for delivering a heart valve prosthesis to a native valve annulus, comprising:
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delivering a self-expanding valve cage stent to the native valve annulus, the valve cage stent including opposing anchoring portions for engaging surrounding tissue; expanding the valve cage stent within the native valve annulus; engaging tissue of the native valve annulus with the opposing anchoring portions, wherein the opposing anchoring portions extend radially outwardly from a longitudinal axis of the valve cage stent; and positioning at least a portion of a tissue valve within the valve cage stent, the tissue valve comprising an expandable and compressible valve frame made from a memory metal; and expanding the tissue valve and coupling the tissue valve to the valve cage stent; wherein the valve cage stent is implanted by use of a first catheter to provide a stable support structure and wherein the tissue valve is implanted within the valve cage stent by use of a second catheter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification