GE Corometrics 250CX Patient Monitor PN 2023110-001 Patient Monitor Motherboard

The GE Corometrics 250cx Series is a maternal/fetal monitor designed for use throughout labor and delivery. It supports both routine non-invasive and invasive fetal monitoring, and is also intended for monitoring maternal vital signs to help assess maternal well-being. The device received FDA 510(k) clearance (K072976) in December 2007 as a perinatal monitoring system.

The 250cx is part of GE Healthcare's Corometrics monitor fleet, which also includes the 170 and 250 series models. The system is known for its reliability in clinical settings and is widely used in hospital labor and delivery units.

• Non-invasive fetal monitoring - Standard ultrasound transducer for fetal heart rate detection
• Invasive fetal monitoring - Supports fetal scalp electrode (FSE) for direct fetal ECG measurement when clinically indicated
• Twin pregnancy monitoring - Capable of monitoring twins simultaneously
• Uterine activity monitoring - Measures contraction strength and duration via tocodynamometer (external) or intrauterine pressure catheter (IUPC)

The monitor is designed to track key maternal vital signs during labor and delivery:

• Maternal heart rate - Via ECG or SpO₂
• Blood pressure - NIBP (Non-Invasive Blood Pressure) monitoring
• Oxygen saturation (SpO₂) - Compatible with GE Marquette SpO₂ sensors

The 250cx can interface with intrauterine pressure catheters (IUPC) such as the Koala IUPC, using adapter cables like the IPC-5014 Pressure Transducer Cable to send pressure signals to the monitor. This allows for:

• Accurate measurement of intrauterine pressure (clinically significant threshold >50 mmHg for effective delivery)
• Assessment of contraction strength to guide clinical management during the second stage of labor

The 250cx is specifically designed for use throughout the labor and delivery process. Key clinical applications include monitoring maternal and fetal vital signs during all stages of labor.

A recent biomedical engineering project at the University of Illinois Chicago utilized the GE Corometrics 250cx Monitor as part of a second-stage labor biofeedback device. The system reads pressure signals from the monitor and transmits them to a microcontroller that provides visual biofeedback to the patient, indicating resting, mild, moderate, and strong intrauterine pressures in the range of 0-75 mmHg. This application demonstrates the monitor's utility beyond basic surveillance, supporting active patient engagement during delivery.

GE Healthcare offers service training for the Corometrics 250cx Series through an online, self-paced course. The training covers:

• Identification of 250cx series features and components
• Functional differences between 256 and 259 models
• Installation and configuration procedures
• Preventive maintenance and calibration requirements
• Field Replaceable Unit (FRU) replacement
• Electrical safety testing
• Troubleshooting using the service manual

The 250cx monitor requires regular calibration to maintain accuracy. The IPC-5014 pressure transducer cable has been verified to be compatible and calibrated with the 250cx for IUPC applications.