Objective Uterine size is one of the essential factors determining the feasibility of a minimally invasive gynecologic surgery approach. A traditional electromechanical morcellator is a well-known tool but not without flaws. We aim to assess feasibility and safety of a novel intrauterine power morcellation device for uterine size reduction to overcome these limitations during hysterectomy. Methods This single-arm, observational study was conducted in a single tertiary care medical center from April 2022 to July 2022. Feasibility and safety of a novel intrauterine morcellation device for uterine size reduction was tested in ten post-hysterectomy uteri (Ex-vivo). Measurements and main results Ten uteri were examined in this trial. No major complications occurred during the procedure. All ten (10) uteri were successfully reduced in size (size reduction range was between 9% to 54%). The average resection time using the Heracure Device was 4.3 minutes (range: 1min- 10min). Mean uterus weight reduction was 21%, with a mean circumference reduction of 25%. No leakage was observed from the outer surface of the uterus/serosa after the saline injection post-procedure examination. Conclusion In this novel experiment, we verified the feasibility and safety of the Heracure device for vaginal intra-uterine morcellation for uterine size reduction. This technique could enable rapid and easy removal of the uterus through the vaginal orifice.