Related Experiment Video
Updated: Aug 22, 2025

14:40
Instrumentation of Near-term Fetal Sheep for Multivariate Chronic Non-anesthetized Recordings
Published on: October 25, 2015
9.5K
An Extractor for the Management of Shoulder Dystocia
Robert B Gherman1, Rajnish Patel
1Department of OB/GYN, Division of Maternal/Fetal Medicine, Wellspan Health System, York, Pennsylvania; and the New Suyog Maternity and Nursing Home, Thane, Maharashtra, India.
Obstetrics and Gynecology
|November 10, 2022
Summary
The Yaari Extractor is a new device designed to resolve shoulder dystocia during vaginal delivery. It successfully guided fetal shoulders in three cases, preventing maternal or fetal injury.
Area of Science:
- Obstetrics and Gynecology
- Medical Devices
- Fetal Medicine
Background:
- Shoulder dystocia is a critical obstetric emergency during vaginal delivery.
- Existing methods for managing shoulder dystocia can be associated with maternal and fetal complications.
Purpose of the Study:
- To evaluate the efficacy and safety of the Yaari Extractor for managing shoulder dystocia.
- To introduce a novel device for facilitating fetal shoulder extraction.
Main Methods:
- The Yaari Extractor is a single-use device with two curved, coated metal arms and an elastic engagement element.
- The device is designed to wrap around and guide the fetal shoulder during delivery.
Main Results:
- The Yaari Extractor was used in three cases of shoulder dystocia.
- Shoulder dystocia was resolved in all three cases without additional obstetric maneuvers.
- No maternal or fetal injuries were reported.
Conclusions:
- The Yaari Extractor is a novel and effective technology for resolving shoulder dystocia.
- The device offers a safe approach to managing this obstetric complication.

