Validation of safety for self-retracting intraperitoneal device for small bowel in minimally invasive surgery

Background: Modernly, abdominal surgery has shifted to minimally invasive techniques with an inclination towards fewer incisions. This has made intra-abdominal retraction more challenging. Despite development in retracting instrumentation for solid organs, the mobilization of the bowel remains challenging due to its friable nature. Therefore, there is a need to investigate the safety profile of internal retractors such as the EndoGrab for small-bowel retraction. Methods: Twenty locations of small bowel were selected for EndoGrab retraction in two pigs. The locations were studied for iatrogenic injury at acute and delayed stages. Evaluation of injury was assessed clinically and histologically. Results: After the EndoGrab application, no immediate signs of perforation or ischemia were observed. The clinical post-operative course was uncomplicated. Histopathology findings included serosal compression and minimal mucosal ulceration. Long-term changes showed mild changes of focal edema and fibrosis, with inter-individual variability in severity. Conclusion: While there were no signs of overt macroscopic acute injury, minimal microscopic changes were evident. According to this small-scale study, the EndoGrab can provide an effective and safe solution for small-bowel self-retractors. More research is needed to acquire a higher level of evidence for safety. Such a solution could eliminate ports or assistants previously designed for retraction only.