Abstract
For small caliber artery replacement, modified ureter graft was invented from pig ureter, treated with ethyl-ether and glutaraldehyde. 18 new grafts, 3-4mm in diameter, were implanted in the femoral arteries of 9 dogs. in contrast, 10 Gre-tex grafts of 4mm in diameter were inserted in the other 5 dogs. The new graft had a 56% patency rate at 1 year, whereas Gore-tex had 0%. 1 (5.6%) infected in the new grafts and 3 (30%) infected in Gore-tex graf ts. The new grafts had no decrease nor increase in graft diameter except 1. Histologically, the modified ureter graft had not much changes as calcification or cell infiltration. There was no difference between the 1 year patent graffs and 2 year patent grafts. 3 were obstructed from pannus hyperplasia and one of the patent graft showed pannus hyper plasia though not obstructed that this graft may need some immunosupplessants or antiplatelet agents for better results.
