Dynatronics Dynatron 550 Plus, Руководство по обслуживанию

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Dynatron
®
850plus & 550plus
ULTRASOUND - General Information
79
Ultrasound Therapy
(For Dynatron 850plus users only. The Dynatron 550plus does not offer the ultrasound
feature.)
About Ultrasound
Ultrasound therapy channels sound waves through muscle, nerve, bone, and connective tissue
to aid in reducing pain, muscle spasms, and joint contractures.
The physiological effect of ultrasound therapy depends upon the frequency of the ultrasound
signal. The lower frequency (1 MHz) penetrates deeper than a higher frequency (such as
2 MHz or 3 MHz), thus the practitioner can decide which frequency to use according to the
condition and depth to be treated.
A section in this manual entitled “Ultrasound Usage Cautions” provides some general
guidelines for ultrasound treatment to help ensure you deliver safe and effective treatments to
your patients. Further information about ultrasound application may be obtained from
published medical literature.
With the Dynatron 850plus, four different soundhead sizes are available—1 cm
2
, 2 cm
2
,
5 cm
2
, and 10 cm
2
. And, you can select three different frequencies without changing the
soundhead. The 2 cm
2
, 5 cm
2
, and 10 cm
2
soundheads each operate at 1, 2, and 3 MHz. The
1 cm
2
soundhead operates at 2 and 3 MHz. The desired frequency is easily selected both
before and during treatment setup.
SmartHeads
The Dynatron 850plus includes Dynatronics’ new SmartHead™ ultrasound applicator. These
soundheads have calibration numbers programmed into them allowing the soundheads to be
freely exchanged with other Dynatron 850plus units or with the Dynatron 950plus, the
Dynatron 150plus, and the Dynatron 125 models. There is no need to enter calibration
numbers into the device when a new SmartHead soundhead is added.
Patient Coupling
Coupling (acoustic contact between the soundhead and the treatment site) may be provided
either via a coupling agent (such as a gel or lotion) or in water (as with underwater
treatments). Any material used as a coupling agent must be highly conductive of ultrasonic
waves. Air is a very poor conductor of ultrasonic waves. Therefore, avoid allowing any air
between the soundhead and the treatment area. During an ultrasound treatment the device
measures coupling; a flashing TIME display indicates that coupling is poor and should be
corrected. However, a treatment is not automatically paused due to poor coupling unless the
soundhead temperature also becomes too high.