Vacuum-assisted abdominal wall lift for minimal-access surgery: a porcine model study.

Carbon dioxide pneumoperitoneum, although used universally in laparoscopy, has several well-documented complications and disadvantages. The authors describe a simple method of creating vacuum between a rigid shell and the abdominal wall in a porcine model to create adequate operative space for minimal-access surgery, which does not requires carbon dioxide, does not raise intraabdominal pressure, and is safe, cost effective, and feasible. The proposed device and method could be useful wherever basic laparoscopic equipment and a vacuum pump are available, including many parts of the developing world. The study was carried out with three groups using individual porcine models for each study. Group 1 was studied for feasibility of abdominal wall lift, adequacy of intraabdominal space, optimal vacuum levels, and safety and efficacy of the procedure. Group 2 was subjected to laparoscopic cholecystectomy and salpingectomy. Group 3 was studied for 2 days and 8 days after the animals were subjected to prolonged, high-level vacuum and monitored every 24 h to establish long-term effects. In all three groups the safety and efficacy of the proposed method were established, as well as the absence of physiological or histological alterations.