镍钛合金吻合夹吻合血管的扫描电镜观察

Scanning electron microscopic observation of microvascular anastomosis with nitinol clip

目的 分析镍钛合金吻合夹吻合血管后吻合口部的扫描电镜观察结果。 方法 新西兰大白兔 10只 ,选取一侧颈动脉以镍钛合金吻合夹行端 -端吻合为实验组 ,另一侧行针线法端 -端缝合为对照组。分别于术后 1d、1周、2周、1个月取血管标本 ,采用扫描电镜观察吻合口部愈合情况。 结果所有 2 0条血管均吻合成功 ,吻合夹法用时 (8± 3.2 ) min明显少于针线法 (15± 4.5 ) min。镍钛合金吻合夹吻合血管后吻合口部内皮细胞再生早 ,内膜更为光滑。 结论 镍钛合金血管吻合夹吻合血管快速、安全、可靠 ,具有良好的应用前景。

Objective To analysis the scanning electron microscopic (SFM) results of the anastomosis site performed by nitinol clip in rabbits Methods The nitinol clip technique for microvascular anastomosis was tested experimentally and compared with the conventional 9 0 end to end suturing technique Ten carotid arteries on one side of 10 rabbits were ananstomosised using nonpenetrating microclips made of nitinol, and the other 10 carotid arteries on one side of 10 rabbits were ananstomosised. using nonpenetrating microclips made of nitinol,and the other 10 carotid arteries on the other side were sutured in a conventional way with 9 0 monofilament nylon Biopsy was performed in two groups of rabbits at different time intervals postoperatively, and the specimens were examined under scanning electron microscopy Results Twenty microvascular anastomoses were patent SEM examination of the anastomotic site revealed major differences between sutured and stapled groups Conclusion Stapled microvacular anastomosis technique is fast and reliable