Design and Analysis of a 2-DOF Uterus Manipulator for Use During Total Laparoscopic Hysterectomy

Uterus manipulators are one of the most useful tools utilized while performing Total Laparoscopic Hysterectomy (TLH). While highly convenient, there are many issues that are presented when using this surgical tool. Slipping, mobility, and the overwhelming varieties of manipulators all create a stressful environment for a surgeon performing this delicate procedure. This suggests that there is room for the development of a robust, multi-functional uterus manipulator that can minimize these issues, and thus create a safer and more effective surgical procedure in the operating room. As a proof-of-concept development, a 3-D Computer-Aided Design (CAD) model was produced and then simulated such that it could be tested for determining key parameters of deformation, degrees of freedom, and range of motion. From Finite Element Analysis (FEA), it was found that the suggested design can reduce slippage, has comparable range of motion to that of uterus manipulators on the market, and has increased flexion within the vaginal canal. These results encourage further development and testing to enhance the safety and efficacy of this new design.