The idea of covering the stent to reduce clotting and intimal hyperplasia,comes from card-iovascular medicine.Early results with covered TIPS using Dacron were rather disappointing.Subsequent studies using polytetrafl...The idea of covering the stent to reduce clotting and intimal hyperplasia,comes from card-iovascular medicine.Early results with covered TIPS using Dacron were rather disappointing.Subsequent studies using polytetrafluoroethylene(PTFE) have been more successful.The Viatorr endoprosthesis is made of titanium,which supports a reduced permeability expanded PTFE graft with a bile resistant membrane.It comprises a 2cm unlined distal section,and a lined section available in 4-8cm lengths,separated展开更多
文摘The idea of covering the stent to reduce clotting and intimal hyperplasia,comes from card-iovascular medicine.Early results with covered TIPS using Dacron were rather disappointing.Subsequent studies using polytetrafluoroethylene(PTFE) have been more successful.The Viatorr endoprosthesis is made of titanium,which supports a reduced permeability expanded PTFE graft with a bile resistant membrane.It comprises a 2cm unlined distal section,and a lined section available in 4-8cm lengths,separated