Southwestern Center for Minimally Invasive Surgery, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, Dallas, TX 75390-9156, USA.
J Gastrointest Surg. 2011 Jun;15(6):902-7. doi: 10.1007/s11605-011-1491-0. Epub 2011 Apr 12.
The purpose of this study was to evaluate the histological effects of dynamic abdominal wall compression using the magnetic anchoring and guidance system (MAGS) platform.
Cholecystectomy was performed in two nonsurvival and two survival pigs using a single-site laparoscopic (SSL) approach. A deployable MAGS cautery dissector was used to perform the entire dissection in conjunction with a laparoscope and other instruments. The abdominal wall areas corresponding to the region occupied by the MAGS platform were examined grossly and microscopically for signs of tissue damage. Gallbladder dissection time was 36 min with no complications. Compressed abdominal wall thickness was 1.4 cm.
In all four animals, a very mild skin erythema was noted immediately postprocedure but was nonvisible within 20 min. Mild peritoneal blanching was noted in two animals, and one animal exhibited a 5-mm area of petechiae. Necropsy demonstrated no adhesions. Light microscopy documented no evidence of tissue injury for all specimens.
This study demonstrated that the use of the MAGS cautery dissector for a SSL cholecystectomy was advantageous in providing triangulation and did not result in any significant gross or microscopic tissue damage despite the thin abdominal wall of the porcine model.
本研究旨在评估使用磁锚定和引导系统（MAGS）平台进行动态腹壁压迫的组织学效果。
使用单部位腹腔镜（SSL）方法对两只非存活猪和两只存活猪进行胆囊切除术。使用可展开的 MAGS 烧灼解剖器结合腹腔镜和其他器械进行整个解剖。对与 MAGS 平台占据区域相对应的腹壁区域进行大体和显微镜检查，以观察组织损伤的迹象。胆囊解剖时间为 36 分钟，无并发症。受压腹壁厚度为 1.4 厘米。
在所有四只动物中，术后立即出现非常轻微的皮肤红斑，但在 20 分钟内不可见。两只动物出现轻微的腹膜苍白，一只动物出现 5 毫米的瘀斑。尸检未发现粘连。光镜检查所有标本均未见组织损伤的证据。
本研究表明，使用 MAGS 烧灼解剖器进行 SSL 胆囊切除术具有优势，可提供三角定位，尽管猪模型的腹壁较薄，但不会导致任何明显的大体或显微镜下组织损伤。
