INTRODUCTION:Transrectal natural orifice translumenal endoscopic surgery (NOTES) requires a good endoluminal view and adequate intrarectal bacterial clearance in the working area. We developed a new occlusion balloon unit with an easily detachable inflation device, which allows the surgeon a clear working area distal to the balloon. MATERIAL AND METHODS:The effectiveness of the sealing balloon and the extent of macroscopic and histopathological injury to the bowel wall at the site of balloon placement were examined in 12 pigs. RESULTS:The mean time to place and inflate the balloon unit was 12.0 ± 3.5 min, effective air-tightness lasted for 21.0 ± 12.0 min. There was no leakage of dye (methylene blue) past the balloon when pressure was maintained >6.70 ± 0.08 kPa (6.62-6.78 kPa). After gut irrigation, good visibility was maintained in the working area for six hours, and adequate bacterial clearance was maintained for three hours. There were no macroscopic signs of intestinal wall damage at the site of balloon placement. Histopathological examination showed only patchy mucosal damage and submucosal thrombus at the site of balloon placement. CONCLUSION:This newly-developed occlusion balloon unit helps to establish good visibility and adequate bacterial clearance for endoluminal surgical procedures.

译文

简介:经直肠自然孔腔内镜手术(NOTES)需要良好的腔内视野,并在工作区域内有足够的直肠内细菌清除率。我们开发了一种带有易于拆卸的充气装置的新型阻塞球囊装置,使外科医生在球囊远端有一个清晰的工作区域。
材料与方法:检查了12只猪的密封球囊的有效性以及球囊放置部位肠壁的宏观和组织病理学损伤程度。
结果:气囊装置的平均放置时间和充气时间为12.0±3.5分钟,有效气密性持续21.0±12.0分钟。当压力保持> 6.70±0.08 kPa(6.62-6.78 kPa)时,没有染料(亚甲蓝)通过球囊泄漏。灌肠后,在工作区域内保持六个小时的良好可见度,并在三个小时内保持足够的细菌清除率。在球囊放置部位没有肉眼可见的肠壁损伤迹象。组织病理学检查仅在球囊放置部位发现斑块状的粘膜损伤和粘膜下的血栓。
结论:这种新开发的闭塞气囊装置有助于为腔内外科手术建立良好的可见性和足够的细菌清除率。

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