摘要目的：评估内镜下新型连发金属夹治疗急性结肠穿孔的可行性和安全性。方法3头巴马猪行全身麻醉，每头猪在内镜下用电刀做2个1.5~2.0 cm 的结肠全层穿孔，分别采用单发金属夹、连发金属夹闭合穿孔，记录每次施夹的操作时间及效果。术后饲养观察动物一般状况，检测各项生理指标。于术后第7天处死，先行内镜观察肠壁切口愈合和金属夹残留情况，再剖腹探查腹腔感染和穿孔愈合情况，最后切取穿孔段结肠及周围一部分正常组织行病理学检查，对比分析上述指标的观测结果。结果3头巴马猪肠穿孔模型均成功建立，2组各3个穿孔均成功闭合。连发夹组平均耗时少于单发夹组（54.0 s 比91.9 s，P<0.001），施夹成功率低于单发夹组[62.5%（15/24）比14/16，P =0.17]。所有动物术后存活，无明显感染和出血征象。5个穿孔完全愈合，另外1个（连发夹组）愈合不完全。结论内镜下应用新型连发金属夹治疗急性结肠穿孔安全、有效，较之单发金属夹具有省时优势，但性能有待进一步改进。

abstractsObjective To evaluate the feasibility and the safety of endoscopic closure for acute colon perforations with novel successive endoclips in animal model. Methods Approximately 1. 5 to 2 cm colonic full-thickness resections were created with an electrotome in 3 Ba-Ma pigs that were under general anesthesia and were closed with the conventional endoclips and novel successive endoclips respectively. The procedure time and the efficacy of each endoclip were recorded. After the procedure,the general condition and physiological indicators were carefully monitored. After a follow-up of 1 week,the pigs were euthanized for an endoscopic observation of the healing condition and the residual endoclips. A postmortem examination was performed to observe the abdominal infection and incision condition. Transverse sections of the colon across the site of perforation were taken for histopathologic examination to assess the healing process. Results All the colonic perforation models in three pigs were established successfully. Endoscopic closure for acute colon perforation with two kinds of endoclips was technically successful in all 3 pigs. The mean time of the procedure with successive endoclip was less than that with the conventional endoclip(54. 0 seconds VS 91. 9 seconds,P<0. 001),but the successful release rate of the successive endoclip was lower than that of the conventional endoclip without significant difference[62. 5%(15/ 24)VS 14/ 16,P= 0. 17].All the ani-mals survived without infection and hemorrhage. Five perforations demonstrated signs of healing,whereas one closed with the novel successive endoclips failed to heal completely. Conclusion Endoscopic closure for a-cute colon perforations with novel successive endoclips is effective and safe. The novel successive endoclip has the advantage of saving time,but it needs to be further improved and perfected to satisfy the clinical need.