Nelson M T, Nakashima M, Mulvihill S J
Department of Surgery, University of California, San Francisco.
Arch Surg. 1992 Jun;127(6):718-20. doi: 10.1001/archsurg.1992.01420060094014.
We tested the security of laparoscopic, hemostatic clips in vitro and in vivo. In vitro, the force needed to transversely dislodge clips that were applied to silicone (Silastic) tubing ranged from a mean +/- SEM of 1.81 +/- 0.07 N (Endo Clip) to 2.68 +/- 0.04 N (Ligaclip). The force needed to axially dislodge clips that were applied to silicone tubing ranged from 4.08 +/- 0.20 N (Endo Clip) to 4.78 +/- 0.18 N (Ligaclip). In vivo, on mesenteric vessels in anesthetized pigs, 34 of 100 clips that were applied laparoscopically with the Endo Clip were moved or dislodged compared with 11 of 100 of those applied with the Ligaclip. We conclude that laparoscopically placed vascular clips applied with the Ligaclip are more secure than those applied with the Endo Clip. The laparoscopic surgeon should be aware of the relative ease with which clips may be dislodged.
我们在体外和体内测试了腹腔镜止血夹的安全性。在体外，横向移动施加于硅胶（硅橡胶）管上的夹子所需的力，平均±标准误范围为1.81±0.07牛（Endo Clip）至2.68±0.04牛（Ligaclip）。轴向移动施加于硅胶管上的夹子所需的力范围为4.08±0.20牛（Endo Clip）至4.78±0.18牛（Ligaclip）。在体内，在麻醉猪的肠系膜血管上，使用Endo Clip腹腔镜施加的100个夹子中有34个发生移动或脱落，而使用Ligaclip施加的100个夹子中有11个发生移动或脱落。我们得出结论，使用Ligaclip腹腔镜放置的血管夹比使用Endo Clip放置的更安全。腹腔镜外科医生应意识到夹子可能相对容易脱落。
