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Moyo is an affordable fetal heart rate monitor designed for intermittent and prolonged monitoring in low-resource settings. With a 9-crystal sensor, Moyo picks up fetal heart rate in a wide area and detects fetal heart rate in less than 5 seconds. Moyo enables birth attendants to make appropriate obstetric interventions and eases the workload without interrupting existing routines. To increase the reliability of the detected heart rate, Moyo can also measure maternal heart rate.

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Key Features

  • Provides an alarm when abnormal fetal heart rate is detected
  • Can measure maternal heart rate for easy comparison
  • A 9-crystal sensor can detect fetal heart rate within a few seconds
  • Designed for continuous fetal heart rate monitoring
  • Can also be used for intermittent monitoring
  • 9-crystal sensor enables rapid detection of the fetal heart rate (less than 5 seconds)
  • Wide detection area (900 sq. cm.)
  • Lightweight and portable
  • Measures maternal heart rate with dry electrodes on the device
  • Displays both maternal and fetal heart rates for comparison
  • Visible and audible alarm when fetal heart rate is abnormal

Specifications

Heart Rate Measurement

Ultrasound Transducer

  • Display range: 50-250 bpm
  • no detectable heart rate or heart rate <50 bpm displayed as “-?-“
  • Accuracy: short term average +/-5 bpm in the range of 50-200 bpm

Maternal HR Electrodes

  • Display range: 30-250 bpm
  • No detectable heart rate or heart rate <30 bpm displayed as “-?-“
  • Accuracy: short term average +/-5% or +/-5 bpm, whichever is greater, in the range of 50-150 bpm

FHR Alarm Algorithm

Lost FHR Alarm

  • when no FHR or <50 bpm lasting for 60 seconds is detected by the ultrasound sensor

Abnormal FHR Alarm

  • when <100 bpm or >180 bpm lasting for more than 3 minutes is detected by the ultrasound sensor
  • when between 100-110 bpm or 160-180 bpm lasting for more than 10 minutes is detected by the ultrasound sensor

Power

  • Internal rechargeable battery, Lithium-ion, 3.7 V, 2600 mAh
  • Battery run time (full charge on fresh battery): >10 hours

Ultrasound Transducer Technical Data

  • Mode: 9-crystal pulsed wave Doppler ultrasound
  • Frequency: 1 MHz
  • Intensity: <5 mW/sq. cm
  • Thermal index (TI) and mechanical index (MI) are always below 1.0

Environmental

  • Operating temperature: 0-40 degrees Celsius
  • Storage/shipping temperature: -30-70 degrees Celsius
  • Storage/shipping air pressure: 550-1060 hPa
  • Operating/storage/shipping humidity: Up to 95% relative humidity, non-condensing
  • Ingress protection: IP41

Materials

  • Main body: ABC/PC, stainless steel
  • Ultrasound transducer: ABS
  • Abdominal belt: high elastic polyester, non-latex
  • Neck strap: Polyester, non-latex

Dimensions

  • Size: 96 x 96 x 24 mm (W x H x D, without cable and ultrasound transducer)
  • Weight: 300 g (main unit + ultrasound transducer)

Maintenance

  • There are no serviceable parts

Accessories and Spare Parts

  • Abdominal tranducer belt (package of 3)
  • Neck strap (package of 3)

Battery charger and cable (5 V USB wall adapter + USB cable, 1.5 m)