Optimizing Surgical Tools for Single-Site Surgery: A Cadaver-Based Design Study

Bernadette McCrory, Alex Cuevas, Jacob Alborano, Bethany R. Lowndes, M. Susan Hallbeck

Research output: Contribution to journalConference articlepeer-review


Background: Laparoendoscopic single site surgery (LESS) is feasible for more complex procedure types, but the technical challenges and learning curve posed by LESS makes traditional multi-incision laparoscopy still the preferred technique. The aims of this study were to understand the restricted mobility and positional requirements of these more complex procedures and to generate innovative instrument designs to overcome these restrictions. Methods: A two-phase study was conducted where three lightly-embalmed (fresh tissue) cadavers were utilized to estimate in vivo mobility restriction and positional requirements. These data were combined to quantifying instrument force and positional requirements to develop a novel design for a LESS-specific grasper. Results: The LESS-specific has an ergonomic curved axial handle and locking mechanism that enables surgeons to relax their grip without the grasper releasing. Conclusion: Further design adaptations are needed to optimize the size, angles, and curvature of the tool, as well as to add two points of articulation for rapid intracorporeal adjustment.

Original languageEnglish (US)
Pages (from-to)1249-1253
Number of pages5
JournalProceedings of the Human Factors and Ergonomics Society
Issue number1
StatePublished - 2019
Event63rd International Annual Meeting of the Human Factors and Ergonomics Society, HFES 2019 - Seattle, United States
Duration: Oct 28 2019Nov 1 2019

ASJC Scopus subject areas

  • Human Factors and Ergonomics


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