CARDIAC PROSTHESES AND THEIR DEPLOYMENT
First Claim
Patent Images
1. A delivery system for replacing a native cardiac valve, the delivery system comprising:
- a wire mesh cardiac valve prosthesis having a cylindrical collapsed state and an expanded state and leaflets that operate to control blood flow;
a wire mesh scaffolding having a collapsed state and at least one expanded deployed state configured to contact walls of a chamber in the heart on a retrograde side of the native cardiac valve;
a delivery system comprising at least one tube in which the prosthesis and the scaffolding are mounted in their collapsed state that is controllable to;
deploy the scaffolding in its expanded state on the retrograde side of the native valve;
deploy the prosthesis in its expanded state; and
remove the scaffolding in the collapsed state from the site of the native cardiac valve to leave the deployed prosthesis replacing the native valve.
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Abstract
A method of replacing a native cardiac valve with a prosthetic cardiac valve, the method comprising: expanding a wire mesh scaffolding in a chamber of the heart on a retrograde side of the native cardiac valve; while the scaffolding is expanded on the retrograde side of the valve positioning the prosthetic cardiac valve at the site of the native cardiac valve; expanding the prosthetic cardiac valve to replace the native cardiac valve; and collapsing the scaffolding to a collapsed state and removing the collapsed scaffolding from the chamber of the heart.
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Citations
21 Claims
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1. A delivery system for replacing a native cardiac valve, the delivery system comprising:
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a wire mesh cardiac valve prosthesis having a cylindrical collapsed state and an expanded state and leaflets that operate to control blood flow; a wire mesh scaffolding having a collapsed state and at least one expanded deployed state configured to contact walls of a chamber in the heart on a retrograde side of the native cardiac valve; a delivery system comprising at least one tube in which the prosthesis and the scaffolding are mounted in their collapsed state that is controllable to; deploy the scaffolding in its expanded state on the retrograde side of the native valve; deploy the prosthesis in its expanded state; and remove the scaffolding in the collapsed state from the site of the native cardiac valve to leave the deployed prosthesis replacing the native valve. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21-33. -33. (canceled)
Specification