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Preparation of polytetrafluoroethylene tubular fiber membranes with dense inner and sparse outer pore structure and its application in artificial blood vessels

LI Chengcai, ZHU Denghui, YIN Xiang, ZHU Hailin, ZHANG Huapeng, LIU Guojin, GUO Yuhai, LIU Bingrong

图6 犬颈动脉不同ePTFE样品置换结果

Fig.6 Results of different ePTFE samples replacement for canine carotid artery. (a)Actual view of primary shaped sample after implantation for 3 weeks; (b) Stained cross-section of primary shaped sample;(c)Actual view of secondary shaped sample after implantation for 6 months;(d) Stained cross-section of secondary shaped sample