Abstract: Objective To valuate the biodegradable anastomosis ring(BAR) in colon carcinoma operation by means of prospective study.Methods 69 cases of colon carcinoma were randomly divided into two groups.Among them,33 cases underwent intestine anastomosis with BAR in operation(BAR group),and another 36 cases underwent traditional manual anastomosis(TMA group).The operation time for the intestinal anastomosis,the postoperative complication and the result of follow-up colonoscopy from the two groups were compared.Results There was no death in both groups after operation and all cases were cured to discharge from hospital.The operation time for intestinal anastomosis in BAR group was obviously shorter than that in TMA group.The postoperative complications such as anastomotic bleeding and pulmonary infection were obviously less in BAR group than that in TMA group.The period of bowel function recovery was shorter in BAR group than that in TMA group.There was no anastomotic leak in BAR group while two cases in TMA group.The follow-up colonoscopy 3-6 months after operation showed the incidences of anastomotic stenosis,ulcer,inflammation and granuloma were obviously less in BAR group than that in TMA group.All the differences between the two groups mentioned above were statistically significant(P<0.01 or P<0.05).Conclusions Application of BAR in colon cancer surgery has the advantages of simple,good efficiency and less postoperative complications.

Key words: Biodegradable anastomosis ring, Colon carcinoma