Simplifying Laparoscopic Hysterectomy Through use of The RUMI Systema Uterine Manipulator and the KOH Colpotomizer System The following articles appeared in a supplement to OBG management, January 1998. Dowden Publishing Company. Speeding The Move To Laparoscopic Hysterectomy - By Charles Koh, M.D. Total Laparoscopic Hysterectomy Simplified: A New Technique - By Charles Koh, M.D. The Enlarged ...