GE Corometrics 259CX Fetal Monitor

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GE Corometrics 259cx Fetal Monitor Features

The GE Corometrics 259cx is a maternal/fetal monitoring system. This unit is a full antepartum/intrapartum fetal monitor that includes innovative features that help clinicians deliver a high-quality birthing experience and enhanced patient care. The GE Corometrics 250 series monitors uterine and fetal activity including fetal heart rate and has enhanced maternal monitoring features including temperature, oxygen saturation, ECG, and non-invasive blood pressure. This Corometrics Fetal Monitor provides comprehensive perinatal monitoring and the flexibility and convenience that give you instant access to the detailed information you need during labor and delivery. Having that information readily available helps you provide a positive birthing experience for the mother and baby.

The GE Corometrics is a medical device for monitoring maternal/fetal parameters. This monitor is equipped with a color LCD display that provides a simultaneous display of fetal and maternal parameters plus the maternal waveforms. On the right side of the front of the unit is the recorder. The recorder prints continuous trends and alphanumeric data on one strip chart. The system is compatible with Centricity Perinatal Clinical Information Systems and other information systems to streamline, capture, and archive patient data. The 250cx supports two fetal heart rate (FHR) channels, Uterine Activity (TOCO or IUP), maternal non-invasive blood pressure (NIBP), maternal pulse oximetry (MSpO2), fetal ECG (FECG), and Maternal ECG (MECG).

The back of the GE fetal monitoring system is equipped with many input and output ports for inputting and outputting data and power. These GE fetal monitors have a Telemetry Connector, Data Entry Connector, Nurse Call System, Central Systems Connector, External VGA Connector, Communication Connectors, ECG Out Connector, Fetal Acoustic Stimulator Connector, Remote Event Marker Connector, and a Power Inlet Module.

When powering up the GE Corometrics Fetal Monitor, the unit automatically performs a number of tests to verify the integrity of the system memory, processor, and voltage levels before allowing the monitor to enter normal operation mode. The pulse oximetry module is also tested and automatically calibrated upon power-up, or whenever the unit is reset.

  • Maternal Blood Pressure
  • Maternal Temperature
  • Maternal Oxygen Levels
  • MECG
  • Centricity Perinatal (CPN)
  • Telemetry Interface)
  • Smart BP
  • Backlit keys
  • Dimmable display
  • 9-crystal ultrasound technology
  • One-touch hot keys

Corometrics Fetal Monitor Specifications


  • Height: 6.7″ (17 cm)
  • Width: 16.7″ (42.4 cm)
  • Depth: 17.5″ (44.4 cm)
  • Weight: 22 lbs (10.9 kg)


  • Nominal Line Voltage: 100 VAC, 120 VAC, 220 VAC, 230 VAC, 240VAC
  • Line Frequency: 50/60Hz
  • Power Consumption: 100 W, 100 W, 0.4 A, 0.4 A
  • Chassis Leakage: <300 µA



  • Ambient Temperature: 50°F to 104°F (10°C to 40°C)
  • Relative Humidity: 10% to 95%, non-condensing
  • Atmospheric Pressure: 700–1060 mbar (525–795 mmHg)


  • Ambient Temperature: 14°F to 131°F (–10°C to 55°C)
  • Relative Humidity:0% to 95%, non-condensing
  • Atmospheric Pressure:700–1060 mbar (525–795 mmHg)

Recorder Drive

  • Speed: 1, 2, and 3 cm/min
  • Speed Accuracy: ± 1%


  • Technique: Peak detecting, beat-to-beat cardio tachometer
  • Heart Rate Counting Rage: 30-240 bpm
  • Heart Rate Resolution: ± 1 bpm
  • Artifact Elimination: Selectable, ± 25 bpm artifact rejection
  • Countable Input Signal Range: 15 µV to 2 mV peak-to-peak
  • Offset Voltage Tolerance (Differential): ± 300 mVdc maximum
  • Maximum Common Mode Voltage: 20 V peak-to-peak
  • Preamplifier Bandwidth: 1–90 Hz
  • Common Mode Rejection:
    • Balanced: > 120 dB at mains frequency, with a patient cable
    • Unbalanced 5kO RA or LA: > 110 dB at mains frequency
  • Input Equivalent Noise: < 10 µV peak-to-peak
  • Input Impedance:
    • Differential: > 10 MO
    • Common Mode: > 20 MO
  • Mains Frequency Rejection: > 40 dB
  • Leakage Current: < 10 µA at 100-240 VAC, electrically isolated
  • Isolation, Mains-to-Patient: > 4 kVAC

Ultrasound Mode

  • Technique: Pulsed Doppler with autocorrelation processing
  • Transducer Type: 9-crystal
  • Pulse Repetition Frequency:
    • Single Ultrasound Mode: 4 kHz
    • Dual Ultrasound Mode: 2 kHz
  • Pulse Duration: 92 µs
  • Transmitter Frequency: 1.151 MHz
  • Spatial-Peak Temporal Average Intensity: Ispta < 10 mW/cm2
  • Spatial-Average Temporal Average Intensity: Isata< 5 mW/cm2
  • Focal 20 dB Beam Area: 16.6 cm2 , at a range = 7 cm
  • Peak Instantaneous Intensity: 1.8 mW/cm2
  • Peak-Negative Acoustic Pressure: p < 10.0 kPa
  • Heart Rate Counting Range: 50–210 bpm
  • Leakage Current: < 100 µA at 100-240 VAC, isolated by the transducer

Uterine Activity Mode


  • Range (typical): 0–100 mmHg (0–13.3 kPa)
  • Resolution: 1 mmHg (0.13 kPa)
  • Bandwidth: dc to 0.5 Hz
  • Excitation Voltage:
    • Zero Set Temperature Drift: < 0.1 mmHg/°C (0.013 kPa/°C), excluding transducer
    • Leakage Current: < 100 µA at 100-240 VAC, electrically isolated


  • Technique: Peak detecting, beat-to-beat cardiotachometer
  • Maternal ECG Electrode Type: Medtronic 1700-003 or equivalent
  • Leads Available: I, II, and III
  • Heart Rate Counting Range: 30–240 bpm
  • Heart Rate Resolution: ± 1 bpm
  • Heart Rate Update Rate: > 1 update per second
  • Countable Input Signal Range: 0.5 mV to 5 mV peak-to-peak
  • Baseline Drift: < 0.5 mV RTI
  • Tall T-wave Rejection: 0.8 x QRS amplitude
  • Heart Rate Meter Response Time:
    • 80–120 bpm Step Increase: < 2 seconds
    • 80–40 bpm Step Decrease: < 3 seconds
  • Alarm Time for Tachycardia 80–200 bpm: < 10 seconds (high alarm limit at 100 bpm)
  • Offset Voltage Tolerance (Differential): ± 300 mVdc maximum
  • Maximum Common Mode Voltage: 20 V peak-to-peak
  • Preamplifier Bandwidth: 0.6 to 40 Hz
  • Common Mode Rejection:
    • Balanced: > 80 dB at mains frequency, with a patient cable
    • Unbalanced 5K RA or LA: > 50 dB at mains frequency
  • Input Equivalent Noise: Input Impedance: < 30 µV peak-to-peak
    • Differential: > 2.5 MO
    • Common Mode: > 10 MO
  • Mains Frequency Rejection: > 40 dB
  • Mains Frequency Rejection: > 40 dB
  • Leakage Current: < 10 µA at 100-240 VAC, with cable, electrically isolated
  • Isolation, Mains-to-Patient: > 4 kVAC
  • Leads Off Detection: dc current < 0.1 µA
  • Alarms:
    • Audio: Alternating 1.5-second chimes
    • Visual: Flashing heart rate numeric or message
    • Limits: User-selectable high and low maternal heart rate
    • Technical: Leads of
    • Tachycardia Response Time: < 8 seconds

Maternal Blood Pressure Mode

  • Technique: Oscillometric w/DINAMAP; SuperSTAT algorithm
  • Blood Pressure Range: Systolic 30-290 mmHg, Diastolic 10-220 mmHg, Mean arterial pressure 20-260 mmHg
  • Pulse Rate Range: 30-200 BPM
  • Blood Pressure Accuracy: ±5 mmHg with a standard deviation no greater than 8 mmHg
  • Pulse Rate Accuracy: ±2 BPM or ±2% (whichever is greater)
  • Cuff Inflation: Initial inflation to 135 mmHg; user-selectable from 100 to 250 mmHg. Subsequent inflation is approximately 10 mmHg greater than the previous systolic pressure.
  • Cuff Deflation: Automatic
  • Safety Features: Automatic cuff deflation if the pressure exceeds 315 mmHg or max. measurement time exceeded (AAMI SP10 limit of 180 sec; set to 120 sec). The safety timer detects microprocessor failure. Auto mode minimum 30-second delay from the end of one determination to the beginning of another to allow for a venous return, indicated by WAIT on the user interface in lieu of auto mode timer.
  • Display/Record: Systolic, diastolic, mean pressure, and pulse rate

Refurbished GE Corometrics 259CX Fetal Monitor

Soma Tech Intl offers a Refurbished GE Corometrics 259CX Fetal Monitor System up to 50% below OEM prices with the same service and warranty as new. The GE Corometrics 159 CX Fetal Monitor is not only technically refurbished but also cosmetically refurbished to make it work and look like new. When the refurbishing process starts the GE Corometrics 259 CX Fetal Monitor is carefully inspected and tested by our own in-house biomedical engineers that are highly skilled and certified to work on GE Corometrics. If necessary, parts are replaced to make sure that all aspects of the pump are functioning properly. Once everything is in working order, the unit is calibrated back to the original engineering manufacturer’s specifications. This ensures that the unit is working the same way that it originally left the manufacturer. After the GE Corometrics, the 259 CX Fetal Monitor system is working like new it undergoes a special cosmetic restoration process. The GE Corometrics 259 CX Fetal Monitor is cleaned, minor scratches and dents are repaired, it’s painted, and new decals are replaced if necessary. After this strenuous refurbishing process, the Unit functions and looks like new. Soma Technology is ISO 13485 certified and ensures that the best quality is given to all capital medical equipment that they sell. Before the GE Corometrics 259 CX Fetal Monitor is labeled patient-ready and packed up for shipment, it goes through one last quality control test that makes sure all aspects are again working as they should. If you are looking to buy a refurbished GE Corometrics 259 CX fetal monitor system contact soma at [email protected] or call us at 1-800-GET-SOMA.

Soma Techn Intl is also actively looking to purchase a GE Corometrics 250 Fetal Monitor. If you or your facility is looking to sell your GE Corometrics 250 Fetal Monitor system, be sure to contact Soma Technology, Inc. Soma has a dedicated and experienced purchasing department that helps you through the entire process. Selling your used or pre-owned GE Corometrics 250 Fetal Monitor to Soma Technology takes out the middle man in the equation. This also ensures that your medical facility gets top dollar for your equipment. Soma Technology is 100% HIPPA compliant and makes sure that your equipment gets to our facility in the same condition that it left yours. Soma Technology also gives the option for trade-in credit on your medical equipment. If you have medical equipment you would like to sell to Soma, send us a message here!


Questions about our Fetal Monitors?

Soma Tech Intl offers a wide range of fetal monitors. If you have any questions about any of our fetal monitors or need a quick quote, call us and one of our knowledgeable sales representatives will help you.

Looking to sell your fetal monitors? Soma ensures your facility gets top dollar for your equipment and also gives the option for trade-in credit.

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