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FOETAL DOPPLER SYSTEM, ultrasonic (Sonotrax)

https://unicat.msf.org/cat/product/12791
STD EEMDFHDE3--

Valid Article

Former Code(s): EHOEFHDE3-- EEMDZPI0013
CE marking: declaration that the product meets EU standards for health, safety, and environmental protection. The CE marking indicates that the product may be sold freely in any part of the European Economic Area, regardless of its country of origin.
Z12080103 - Foetal heartbeat detectors
European Medical Device Nomenclature (EMDN) is the nomenclature of use by manufacturers when registering their medical devices in the EUDAMED database. EMDN is characterised by its alphanumeric structure that is established in a seven-level hierarchical tree.
IIa
In Europe, medical material that fulfills the definition of a medical device according to the MDR (Medical Device Regulation) is classified into 4 classes
The product is part of at least one Kit. A kit is a collection of products (medical and/or logistic) that are needed for a certain intervention in emergency. The choice and quantity of the articles reflects the MSF protocols for this specific situation. The use of Kits allows to start an intervention without a detailed evaluation.
OC subscriptions: included in supply or field order tools (e.g. UniField)
SC subscriptions: included in supply or field tools
OC validations: approved for procurement and use by an OC for international or local orders specifying context and activity in Medical Standard Lists (MSL)

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FOETAL DOPPLER SYSTEM

Definition

Device allowing to hear and to display the fetal heart rate from 10-12 weeks gestation.

This fetal heartbeat detector works on the principle of DOPPLER effect. Ultrasonic waves are beamed from the transducer probe to the foetus. The beam is reflected back with slight difference in frequency due to fetal heart movements, blood particles or other moving organs. The reflected signal is received, amplified and electronically processed by the device to produce audible beeps.

Synonym

Doppler, Foetal heart detector

Specifications

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Technical specifications

  • Ultrasound frequency: 2MHz‌ (obstetrical probe)
  • Hearing of fetal heartbeat:
    • Loudspeaker with volume control
    • Output power: 0.5 W
    • Recording length: 240 s
  • Calculation of the fetal heart rate:
    • Range: 50-210 bpm (beats per minute)
    • Accuracy: < ± 1 bpm over 100-180 bpm
    • Averaging: 3 – 5 beats
  • LCD display (digital screen) of the fetal heart rate
  • Waterproof probe and cable
  • Power supply:
    • Runs on 2 AA batteries of 1.5 V
    • Battery life: 8 hours
    • Charge time: 4 hours
    • "Battery low" signal: only on basic A model
    • Auto power-off (after 1 min)

Dimensions

  • Main unit: 144 x 89 x 33 mm
  • Probe: 88 mm x Ø 35 mm
  • Total weight: 300 g (including batteries)

Packaging & Labelling

Supplied in a soft pouch with:

  • 2 AA rechargeable batteries
  • 1 battery charger
  • 1 tube of clear ultrasound gel
  • 1 user's guide

Instructions for use

In case of skin infection, cover the end of the probe with a condom or a single use latex glove.

If ultrasound gel is difficult to get, it can be replaced by olive oil or soft almond oil.

Maintenance

The probe cannot be sterilized and must be cleaned and disinfected with a detergent/disinfectant for surfaces/non-invasive medical equipment. Prepare use-solution in concentration required. Always read the label and product information before use. Do not mix with other products. Make sure to wet the surfaces completely, use a wipe or towel, keep them wet for the whole exposure time.

(Cf Introduction: Disinfection and sterilization in the field)

Storage

Protected from humidity and dust.

MSF requirements

Easy to use, this device is useful for the diagnoses of fetal distress, fetal death, molar pregnancy and multiple pregnancy.

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