Cardiac prostheses and their deployment
AssigneeThe Medical Research, Infrastructure and Health Services Fund of the Tel Aviv Medical Center
InventorGad Keren
Life of this patent
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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.
Claims21
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.
21-33. (canceled)
Dependencies are inferred from the claim text.