| 摘要 |
A process for fixing a natural tissue heart valve whereby the valve has improved hydraulic performance is disclosed. The valve is first placed in glutaraldehyde with the valve cusps kept in the closed position by applying hydraulic pressure to the ventricular side of the valve. The valve is then trimmed and fitted to and sutured into a fabric covered plastic stent. An expandable tube is then placed axially within the valve and expanded to force the valve cusps into an open position. The expanded tube-valve-stent assembly is then placed in glutaraldehyde to further fix the valve and predispose the valve cusps to an open position.
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