论文部分内容阅读
用作修补鼓膜的筋膜,虽然具有耐低营养、抗感染力强、成活良好等优点,但用于修补大穿孔时,由于在治愈过程中,出现膜层的表浅化和与外耳道前壁之间的夹角钝角化等原因,易于产生听骨链传音机构障碍的缺点。为弥补筋膜的这些缺点,自1964年Chalat氏首先试用同种异体鼓膜以来,该法现已广泛应用于临床。同种移植鼓膜的生长成活过程是纤维软骨性的鼓膜轮和中间层的骨胶原纤维从患耳内周围组织开始,由纤维细胞、淋巴细胞和小血管等向移植膜中心长入,
For the repair of the tympanic membrane of the tympanic membrane, although with low nutrition, strong anti-infective, good survival, etc., but when used to repair large perforation, due to the healing process, there is superficial membrane layer and the external auditory meatus front wall The angle between the obtuse angle and other reasons, prone to dysfunction of the ossicular chain acoustic shortcomings. To make up for these shortcomings fascia, since 1964, Chalat’s first trial of allogeneic eardrum, the law has now been widely used in clinical. Allograft tympanum growth and survival process is fibrocartilaginous tympanic membrane and the middle layer of collagen fibers from the surrounding tissue in the ear began by the fibroblasts, lymphocytes and small blood vessels to grow into the center of the graft,