Cooper Surgical Medasonics TRIA P338, Manual

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Obstetrical Use: Fetal System
Product Description
The MedaSonics Tria Fetal Doppler System consists of a handheld speaker
or speaker with heart rate display unit and 2 MHz Probe. The probe is con-
nected to the unit via a coiled cord.
Speaker Unit with Optional Accu-Rate Heart Rate Display
The speaker unit is comprised of the electronics, battery compartment,
on/off power control, volume control, on/off and battery life LED indicators,
and optional heart rate display. The 3.5 mm audio output jack on the top of
the unit allows private listening with an optional stethoscope (available
through MedaSonics) or the connection of a recording device.
The green LED on the face of the unit is lit when the unit is turned on. When
the battery falls below optimum performance levels, the yellow LED
becomes lit prompting the user to change the battery.
The Accu-Rate Heart Rate Display calculates and displays the heart rate
once a signal is obtained. The rate is displayed in beats per minute and is
averaged over several beats. By watching the heart-shaped icon on the LCD
display, the user can verify the accuracy of the heart rate display number. If
the inner, solid black heart icon flashes in sync with the heart tones emitting
from the speaker, then the Doppler has “locked on” to the heart rate signal
and will accurately display the rate. If the inner heart icon flashes random-
ly in comparison to the audible heart tones, the unit has not “locked on” to
the signal and is erroneously identifying noise as the heart rate. When this
happens, increase the volume level on the Doppler. This increases the audio
signal upon which the algorithm can operate and will allow it to “lock on” to
the signal and accurately display the heart rate.
Standard Fetal Probe
The 1-inch diameter ultrasound transducer, located at the tip of the probe,
generates signals which are processed and can be heard through the speak-
er or optional stethoscope. The transducer frequency is 2.3 MHz.
Waterproof Fetal Probe
The waterproof fetal probe is also a 1-inch diameter ultrasound transducer
transmitting at 2.3 MHz. It is designed specifically for the assessment of
fetal heart rate and circulation in and during water births. The probe is
waterproof to IEC Ipx7 specifications. Caution: The speaker unit is not
waterproof. Care must be taken to avoid contact with water.
Probe Retention
The Doppler probe is held fast to the speaker unit with magnets which can
be seen in the pocket on the right side of the unit. Simply place the probe
gently in the pocket and the magnets will retain the probe for storage and
transport. While the retention force of the magnets is high, it cannot prevent
the dislodging of the probe under extreme conditions, such as high impact.
Probe Connection
To remove a probe from the system, gently pull the gray connector out from
the base of the probe. To connect a probe, line up the tab on the end of the
connector with the notch on the end of the wand and push gently until they
snap together.
Note: The probes on the waterproof and dedicated fetal Tria Systems are
permanently wired to the speaker unit and cannot be removed.
Battery
The Doppler requires one 9V alkaline battery which is located in a compart-
ment in the back of the speaker unit. Battery life will vary according to fre-
quency and duration of exam.