Babypulse Fetal Doppler
More Information:
How early can I hear my baby? The answer to this question is not as straight forward as some people would have you believe, however a large number of doctors and midwives who use our dopplers claim detection as early as 8 or 9 weeks. Naturally they are doing this all the time and have a few special techniques, but the dopplers they are using are virtually identical to the babypulse and by following our "tips for success" we feel confident you will be able to hear your baby's heart beat from 9-10 weeks.
Tips for success
The fetus, especially early in pregnancy, is often a lot lower than many people imagine, at ages of less than 10 weeks it is not unusual for the uterus and fetus to be obscured behind the pelvic bone.
The wall of the uterus is easy to detect by running your fingers lightly over the mothers body from the pelvic bone upwards towards the navel. The wall of the uterus will "appear" as a hard ridge.
By positioning the babypulse probe between the ridge and the pelvic bone and
by pointing the probe down towards the pelvis it should be possible to hear
either the fetal heart sounds or the blood flow in the placenta. Use plenty
of air free (bubble free) ultrasound gel between the probe and skin.
Make sure the probe is in good contact with the skin.
It is sometimes easier to detect
baby if you are lying down. Remember baby can move or change position so
you might not detect baby in exactly the same
place every day. Be smooth, slow and steady as you move the probe, too quick
and you might miss the spot, especially in early pregnancy, or lose the sound
amongst the "static" of motion.
The unit is powered by a standard 9V battery, which provides over 9 hours of
use.
| • Operation | |
| Principle | Doppler effect ultrasound |
| Frequency | 2 MHz continuous wave |
| Transducer | dual crystal narrow beam |
| Output power | less than 10mW |
| Audio response | 300Hz to 1KHz |
| • Unit Controls | |
| Keys | 1 Key (for unit on/off) |
| Controls | Rotary volume |
| Indicators | Yellow battery low LED |
| Power Supply | MN1604 (PP3) 9V Alkaline Manganese |
| • Battery | |
| Expected battery life | more than 9 hours |
| Outputs | |
| Headset | Audio output to optional headset |
| • General | |
| Enclosure | ABS / Noryl |
| Size | 150mm by 75mm nominal |
| Weight | 295g typically including transducer |
| • Safety | |
| Classification | Class 1 Type B - IEC 60601-1 |