鉴于以往用自体颊粘膜和骨皮质作移植实验时,骨和软骨易被吸收,故作者使用异质材料作为支架。支架若采用高强度材料(如玻璃、钢等)或无孔软材料(如硅橡胶)植入,则由于组织不能穿越移植物而生长,远期效果差;若采用无粘膜衬里的有孔软材料时,则由于结缔组织持续穿壁生长,直至与气管切口端再生上皮融合为止,此时增生的疤痕组织往往在气管移植区中央部位造成高度狭窄。因此作者采用了专为移植而设计 In view of the past with autologous buccal mucosa and cortical bone transplantation experiments, bone and cartilage easily absorbed, so the author uses heterogeneous materials as a scaffold. If the stent with high-strength materials (such as glass, steel, etc.) or non-porous soft material (such as silicone rubber) implantation, the organization can not grow through the graft growth, the long-term effect is poor; Material, then the connective tissue continues to grow through the wall until the end of tracheal incision regeneration epithelium fusion, when hyperplastic scar tissue often tracheal transplantation in the central part of the resulting high degree of stenosis. So the author designed specifically for transplantation