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TRIA System Contents
Thank you for purchasing a MedaSonics Tria
™
Doppler System. MedaSonics
handheld Dopplers have been a standard of care for 30 years. We are committed
to continuous research and development, marketing and manufacturing of
quality products.
The Tria Doppler System is available with a 2 MHz Fetal Probe, a 5 MHz
Vascular Probe or a 2 MHz Waterproof Fetal Probe. Non-waterproof Doppler
probes can be purchased separately to allow greater versatility in multiple
clinical settings.
Before using your Doppler, ensure that the carton contains the items shown
below.
1 ea - Speaker Unit or
1 ea - Ultrasound Gel
Speaker Unit w/Display 1 ea - Carrying Case
1 ea - Doppler Probe
1 ea - Warranty Card
1 ea - 9V Battery
1 ea - User’s Manual
If any item is missing or appears damaged or if for any reason you are not
satisfied with your Doppler, please contact your supplier or MedaSonics
immediately. For more information on accessories or Dopplers, call our
Customer Service Department at (800)-227-8076 or (203)-929-6321 (in
the U.S.).
Introduction
The MedaSonics Tria Doppler System consists of a hand held unit contain-
ing the system controls and speaker, optional heart rate display, and one or
more Doppler probe(s) that contain the ultrasound transducer and Doppler
electronics. Choice of a probe depends on the clinical application.
The MedaSonics Tria 2 MHz Fetal Probe is designed specifically for detection
of the fetal heart rate and circulation. Clinical experience has demonstrated
that Doppler ultrasound is a simple, noninvasive aid in the management of
routine as well as problem pregnancies.
The MedaSonics Tria 5 MHz Vascular Probe is designed specifically for
detecting blood flow in the arterial and deep venous system of the extremi-
ties. Clinical experience has demonstrated that Doppler ultrasound is a sim-
ple, noninvasive aid in the assessment of venous and arterial flow in the
extremities.
The MedaSonics Tria Doppler Systems are based on the Doppler shift prin-
ciple. The tip of the Doppler contains two piezoelectric crystals. One crystal
transmits very low power ultrasonic waves at a frequency of approximately
2.3 MHz for the fetal and 5.1 MHz for vascular. As these ultrasonic waves
reach moving tissue such as blood cells, they are reflected and their pitch is
shifted slightly. This change in pitch is the Doppler shift. The receiving crys-
tal detects and amplifies these reflected waves. Further processing converts
the Doppler-shifted ultrasonic waves into the audible sounds of blood flow.
Содержание Medasonics TRIA P338
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