GE Corometrics 128 fetal monitor Features

Offering every monitoring need for both the mother and fetus, the Corometrics 128 is a hospital grade twin fetal monitor. The GE Corometrics Series Maternal and Fetal Monitors help clinicians manage labor, delivery, and the recovery for their patients. Includes Fetal HR for twins, Fetal ECG, Uterus Activity, Fetal SpO₂ (optional), Maternal BP, Maternal SpO2, 3 ea Serial Interface.

Corometrics 120 Series Specifications

Dimensions

Height: 6.7”, 17 cm
Width: 16.4”, 41.9 cm
Depth: 17.3”, 43.9 cm
Weight: 24 lbs (10.9 kg) approximate

Ultrasound Mode

Technique: pulse Doppler with autocorrelation processing
Transducer type: 9-crystal
Pulse reception frequency: 4 kHz single ultrasound mode, 2 kHz dual ultrasound mode
Pulse duration: 92 µs
Transmitter frequency: 1.151 MHz
Intensity: <5mW/cm²
Heart rate counting range: 50-210 BPM
Leakage current: <10 µA at 120-240 VAC, isolated by transducer

FECG Mode

Technique: peak detecting, beat-to-beat cardiotachometer
Heart rate counting range: 30-240 BPM
Heart rate resolution: ±1BPM
Artifact elimination: switch selectable, ±25 BPM artifact rejection
Countable input signal range: 15 µV to 2mV peak-to-peak
Offset voltage tolerance (differential): ±300 mVDC maximum
Maximum common mode voltage: 20V peak-to-peak
Preamplifier bandwidth: 1-100 Hz
Common mode rejection: balanced > 120 dB at mains frequency, with patient cable, unbalanced = 5 kΩ RA or LA: > 110 dB at mains frequency
Input equivalent noise: < 10µV peak-to-peak
Input impedance: differential > 10 MΩ, common mode > 20MΩ
Mains frequency rejection: > 40 dB
Leakage current: < 60µA at 254 VAC, electrically isolated. Isolation, mains-to-patient: > 4 kVAC
Leg plate tester jack: simulated r-wave at 120 ± 1 BPM

Fetal Alarms

(for ultrasound or FECG modes) Audio: alternating 1.5 second chimes (773 Hz and 523 Hz)
Visual: flashing heart rate numeric
Limits: user selectable high and low fetal heart rate
Technical: signal quality
Tachycardia response time: 5 minutes at 100% limit violation
Bradycardia response time: 30 seconds at 100% limit violation
Signal quality response time: 100% signal loss – 1.25 minutes, 70% signal loss – 5 minutes, 65% signal loss – 10 minutes

Fetal Pulse Oximeter Mode

Technique: spectrophotometry and plethysmography
Saturation range: 10-100%
Saturation accuracy: reproducibility is one standard deviation = 4.7%. Nominally, 67 of the measurements across the population will be within ± standard deviation
Wavelengths: red: 735 µM, nominal; infrared: 890µM, nominal
Response time: user-selectable: slow and fast averaging modes
Transmitter frequency: 1.151 mHz

Uterine Activity Mode

Range: 0-100 mmHg strain gauge, 0-100 relative units tocotransducer
Resolution: 1 mmHg stain gauge, 1 relative unit tocotransducer
Bandwidth: dc to 0.5 Hz strain gauge and tocotransducer
Excitation voltage: strain gauge +4.0 VDC

Maternal BP Mode

Technique: oscillometric. Blood pressure range: 20-255 mmHg (2.7 – 34 kPa)
Pulse rate range: 40-240 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
Display/record: systolic, diastolic, and mean pressure; pulse rate

Maternal Pulse Oximeter Mode

Saturation range: 0-100%
Pulse rate range: 30-250 BPM
Saturation accuracy: %SpO2 ± 1 SD: 70-100% ±2 digits, 50-69% ± 3 digits. 0-49% unspecified
Pulse rate accuracy: ±3BPM

MECG Mode

Leads: II, III, and I
Heart rate counting range: 30-240 BPM
Heart rate resolution: ± BPM
Heart rate averaging: 1 sec
Maximum common mode voltage: 20 Vp-p
Preamplifier bandwidth: 0.6 to 40 Hz
Common mode rejection: balanced > 80 dB at mains frequency, with patient cable; unbalanced 5 k RA or LA > 50 dB at mains frequency
Input impedance: differential > 2.5 MΩ; common mode > 10 MΩ
Mains frequency rejection: >40 dB
Leakage current: < 60 µA at 254 VAC, with cable, electrically isolated
Alarms: Audio: alternating 1.5 seconds chimes, Visual: flashing heart rate numeric or message, Limits: user-selectable high and low maternal heart rate, technical: leads off

Power Requirements

Line voltage: 100/120/220/230/240 VAC
Line frequency: 50/60 Hz
Power consumption: 100W/0.4 A maximum

GE Corometrics 128 Fetal Monitor Refurbished