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Updated: Dec 7, 2025

Laparoscopic Extracorporeal Knot-Tying for Uterine Vessel Occlusion during Hysterectomy with Cervical Cerclage in Large Uteri
Published on: September 12, 2025
The Development of a New Uterine Manipulation Method during Minimally Invasive Radical Hysterectomy
Seiji Mabuchi1, Emiko Niiro2, Mika Nagayasu2
1Department of Obstetrics and Gynecology, Nara Medical University, Kashihara, Nara, Japan (all authors)..
A new U-traction device safely manipulates the uterus during minimally invasive radical hysterectomy (MIS-RH) for cervical cancer. This novel approach avoids vaginal manipulators and the need for assistant surgeons, improving oncological outcomes.
Area of Science:
- Gynecologic Oncology
- Minimally Invasive Surgery
- Surgical Innovation
Background:
- Vaginal uterine manipulators may negatively impact oncological outcomes in cervical cancer patients undergoing minimally invasive radical hysterectomy (MIS-RH).
- There is a need for safe and effective uterine manipulation techniques in MIS-RH.
Purpose of the Study:
- To evaluate the safety and efficacy of a novel uterine manipulation device, U-traction, during MIS-RH for cervical cancer.
- To determine if U-traction can replace traditional vaginal manipulators and reduce the need for assistant surgeons.
Main Methods:
- Retrospective study involving 8 patients with early-stage cervical cancer undergoing MIS-RH.
- Development and application of the U-traction device, a 65-mm half-curved cutting needle with a 2.5-mm polyester tape.
- Laparoscopic or robotic radical hysterectomy procedures were performed using the U-traction device for uterine manipulation.
Main Results:
- Uterine manipulation with U-traction was successfully and safely performed in all 8 patients.
- No complications were reported during or after the procedure.
- The application time for U-traction was less than 5 minutes.
- The use of vaginal manipulators, extra incisions, or assistant surgeons for uterine manipulation was avoided.
Conclusions:
- The novel U-traction device facilitates easy and reproducible uterine manipulation during MIS-RH.
- U-traction offers a safe alternative to vaginal uterine manipulators, potentially improving oncological outcomes.
- This device enables safe MIS-RH without requiring an assistant surgeon for uterine manipulation.
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