Methods and devices for folding valve leaflets
AssigneeEdwards Lifesciences Corporation
InventorsTamir S. Levi, Ziv Yohanan, Assaf Bash
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Abstract
A method of valve implantation includes installing a leaflet lasso on a host leaflet assembly at an implantation site within a patient's body. The method includes positioning an expandable prosthetic heart valve in a crimped state within a central region of the host leaflet assembly. The method includes radially expanding the prosthetic heart valve to a working diameter. During at least a portion of radially expanding the prosthetic heart valve, the prosthetic heart valve contacts a central lasso portion of the leaflet lasso and applies a radial force to the central lasso portion that results in folding of at least one leaflet of the leaflet assembly.
Claims21
A leaflet folding device for modifying a leaflet of a host heart valve, the leaflet folding device comprising:
- a lasso member comprising:
- a central lasso portion defining a central opening;
- and
- a lateral lasso portion coupled to the central lasso portion such that radial expansion of the central lasso portion by applying tension to the central lasso portion results in axial contraction of the lateral lasso portion.
A method comprising:
- installing a leaflet folding device on a leaflet assembly of a first prosthetic heart valve implanted within a native heart valve;
- positioning a second prosthetic heart valve in a crimped state within a central region of the leaflet assembly;
- and
- radially expanding the second prosthetic heart valve from the crimped state to a working diameter, wherein during at least a portion of radially expanding the second prosthetic heart valve the second prosthetic heart valve contacts a central lasso portion of a lasso member of the leaflet folding device and applies a radial force to the central lasso portion that results in folding of at least one leaflet of the leaflet assembly.
Dependencies are inferred from the claim text.