Abstract
The quest to make minimally invasive techniques even more ‘minimal’ has generated a drive within the surgical community to explore novel ways of achieving this. This has led to surgeons attempting to either decrease the number of trocars placed through the abdominal wall or eliminate them completely. This led to the evolution of several approaches, including natural orifice translumenal endoscopic surgery (NOTES), single incision laparoscopic surgery (SILS), single port access surgery and one port umbilical surgery (OPUS) or E-NOTES. The most recent consensus on nomenclature involves the term laparoendoscopic single-site surgery (LESS). The transition from multiple port access surgery to single port access surgery represents a paradigm shift in reconstructive and extirpative surgery and is a testament to the recent advances in surgical technology. Successful LESS involves the use of articulating or bent instrumentation via a single large-caliber trocar or small, adjacent trocars. Advances in technology have led to the development of new laparoscopic access ports (R-Port™ and Quadriport™ by Advanced Surgical Concepts, Wicklow, Ireland; and Uni-X™ Single Port, PNavel Systems, Cleveland, OH, USA) capable of permitting several instruments to be inserted through multiple channels incorporated in, and as part of, a larger single port. The development of articulating and bent instrumentation permits triangulation intracorporeally despite the close proximity of several instruments via a single port. Currently, commercially available instruments can be broadly divided into articulating laparoscopic graspers and shears (Real Hand™, Novare Surgical Systems, Cupertino, CA, USA; and Autonomy Laparo-angle™, Cambridge Endo, Framingham, MA, USA), endoshears (Cambridge Endo), and laparoscopic needle drivers (Cambridge Endo). Despite the preliminary optimistic results in the outcomes of LESS, an experienced laparoscopic skill set is essential for the safe and effective completion of surgery.
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