Method for preparing tissue heart valve

Details Method for preparing tissue heart valve Method for preparing tissue heart valve

A - Human Necessities

61

L

3/118, 8/54

A61L 27/36 (2006.01) A61F 2/24 (2006.01)

Patent

CA 1226403

METHOD FOR PREPARING TISSUE HEART VALVE ABSTRACT A method for preparing an aortic heart valve for implanta- tion wherein the area of the septal shelf of the right coronary cusp extending into the valve orifice is substan- tially reduced. The excised valve is prepared for fixa- tion by pressurizing the valve to close the valve cusps, and thereafter inverting the aortic vestibule tissue over a valve stent or other cylindrical form circumscribing the valve. As the vestibule tissue is inverted, the septal shelf muscle is pulled toward the outside wall of the valve. When the septal shelf has been displaced to the maximum extent possible while maintaining coaption of the valve leaflets, the valve is fixed with a tanning solution. The resulting valve, after being trimmed and mounted for implantation, has improved flow characteristics.

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