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发明授权
US5713953A Cardiac valve prosthesis particularly for replacement of the aortic valve 失效
心脏瓣膜假体特别用于更换主动脉瓣

Cardiac valve prosthesis particularly for replacement of the aortic valve
摘要：
A stentless prosthesis is made completely from material, for example bovine pericardium, other than valve material. A projection of the valve sleeve allows reparatory operations on surrounding tissues.
摘要（中）：

无支架假体完全由材料制成，例如牛心包膜，而不是阀门材料。 阀套的突起允许对周围组织进行备用操作。

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