Mechanical evaluation of three access devices for transumbilical laparoscopic surgery / 第二军医大学学报

Objective To make the horizontal and vertical mechanical evaluation for different access devices (Port) in transumbilical laparoscopic surgery, and to compare the maneuverabilities of these devices during the process. Methods A laparoscopic training box was combined with Multi-ports, TriPort and SILS Port to construct the evaluation platforms. A universal testing machine was used for evaluating the mechanics of the three devices on horizontal and vertical direction by traction experiments. Results In the horizontal traction experiment, the forces were significantly different on the instruments with different access devices (Multi-ports

Colecistectomía endoscópica transumbilical: estudio preclínico de factibilidad en un modelo porcino / Transumbilical endoscopic cholecystectomy: preclinical study of feasibility in a pig model

A partir del 2007 comenzó a popularizarse la cirugía endoscópica transumbilical, probablemente como consecuencia de los retos aún no resueltos que la cirugía endoscópica transluminal a través de orificios naturales ha debido enfrentar para su aplicación en la práctica clínica. Hasta la fecha se han descrito técnicas de cirugía endoscópica transumbilical con endoscopia flexible, con trocares multicanales, con varios trocares en una sola incisión, así como diferentes sistemas de retracción, tales como la retracción con suturas (técnicas de marionetas) y la retracción magnética. El objetivo de esta investigación fue evaluar en un modelo porcino la factibilidad de una nueva técnica de colecistectomía endoscópica transumbilical. Se realizó un estudio prospectivo longitudinal en 6 cerdos con peso entre 22 y 26 kg. Se practicó la colecistectomía endoscópica transumbilical desde un puerto, con un solo canal de trabajo y con un nuevo sistema de retracción vesicular (TORCAM). La eutanasia de los animales se realizó de manera inmediata y fueron evaluadas las variables: factibilidad, calidad de exposición, efectos adversos del sistema de retracción, tiempo quirúrgico y examen macroscópico posoperatorio de la zona quirúrgica. La calidad de la retracción y exposición de la vesícula fue considerada óptima en todos los casos, lo que permitió la realización de la técnica quirúrgica en el 100 por ciento de la muestra. No se reportaron complicaciones ni efectos adversos asociados al sistema de retracción vesicular. El tiempo quirúrgico promedio fue de 46 min. La colecistectomía endoscópica transumbilical propuesta es una nueva técnica que demostró ser factible en el modelo animal(AU)

From 2007 transumbilical endoscopic surgery to become popular probably as a consequence of the not yet solved challenges that transluminal endoscopic surgery through natural orifices has faced for its application in the clinical practice. Up to date have been described the techniques of Transumbilical endoscopic surgery with flexible endoscopy, with multi-channels, with some trocars in a only incision, as well as different retraction systems like that of the suture retraction (marionette techniques) and the magnetic retraction. The aim of present research was to assess in a pig model the feasibility of a new Transumbilical endoscopic cholecystectomy technique. A longitudinal and prospective study was conducted in 6 pigs weighing between 22 and 26 kg. The above mentioned technique was applied from a portal, with an only work channel and with a new vesicular retraction system (TORCAM). Animal were immediately sacrificed and the following variables were assessed: feasibility, exposition quality, adverse effects of retraction system, surgical time and postoperative macroscopic examination of surgical area. Retraction quality and gall bladder exposition were optimal in all cases, allowing the carrying out of surgical technique in the 100 percent of sample. There were neither complications nor adverse effects related to the vesicular retraction system. Average surgical time was of 46 minutes. The proposed transumbilical endoscopic cholecystectomy is a new technique demonstrating its feasibility in the animal model(AU)

Preliminary Clinical Report on Transumbilical Endoscopic Surgery / 中国微创外科杂志

Objective To discuss the clinical value of transluminal endoscopic surgery (TUES), and to find a simple and safe no-scar surgical approach. Methods A total of 13 cases of TUES, including 1 case of hepatic abscess fenestration, 1 abdominal exploration, 5 appendicectomy, and 6 cholecystectomy, were carried out in our hospital. Among the cases, 3 were accomplished using upper-digestive endoscopy, and 10 were performed using triple-channel catheter technique by modified instruments.Results All the operations were completed successfully without conversion to routine laparoscopic surgery or open surgery. The operation time was 90-150 min in the 6 cases of cholecystectomy, 15-40 min in the 5 cases of appendectomy, 90 min in the hepatic abscess fenestration, and 50 min in the abdominal exploration. The abdominal exploration showed peritoneal abrasion around the bladder, and the hemorrhage was controlled by electric coagulation. No complications including hemorrhage and biliary fistula occurred in this series. No abdominal scar was found after the operation except in the skinfolds around the hilum. Conclusions The TUES is a simple, safe, and feasible technique. Since the TUES for cholecystectomy is difficult, the patients should be selected carefully.