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修补大于面积30%的鼓膜穿孔时,移植物成活率明显降低,过去常用各种天然和经保存的移植材料虽各有优点,但也有一定缺点。近年来屡有用多层材料修补鼓膜穿孔的报道,应考虑其组成成分需与鼓膜的解剖构造相当。采用三层移植修补鼓膜的大或完全性穿孔,三层组织内层为在无菌条件下取自死于心血管病或外伤意外尸体的Ⅶ～Ⅹ同种异体肋软骨超薄(50～70μm厚)软骨片,中层为自体颞肌膜,外层为保
The repair of more than 30% of the area of the tympanic membrane perforation, the graft survival rate decreased significantly, the past, often used in a variety of natural and preserved graft materials have their own advantages, but there are certain shortcomings. In recent years, repeated use of multi-layered materials repair tympanic membrane perforation reports should be considered its composition and tympanic membrane anatomical structure should be quite. A three-layer graft was used to repair the large or complete perforation of the tympanic membrane. The inner layer of the three layers was Ⅶ ~ Ⅹ allogenic rib cartilage ultrasonically (50 ~ 70μm) under aseptic conditions from died of cardiovascular disease or accidental carcass Thick) cartilage films, the middle of the autologous temporal muscle, the outer layer of protection