Conkin Surgical Instruments Ltd. was founded in the 1970s by Dr. Konstantin Valtchev, and has grown to become an internationally recognized company for surgeons everywhere. Dr. Valtchev developed the Valtchev Uterine Mobilizer VUM-6 and Vaginal Delineator as a result of seeing firsthand the need for better gynecological instruments. The VUM-6 allows single handed uterine manipulation with an increased range of movement, and is still widely considered to be one of the best available manipulators. Conkin Surgical now operates out of Vancouver, British Columbia. Keir Surgical is the exclusive North American distributor of Conkin.