Warranty; Physiological Effects Of Ultrasound; Environmental Hazards - Parks 915-BL Operating & Service Manual

Physiological Effects of Ultrasound

Ultrasound Instrument Console and Transducer Assembly
The biological effects of ultrasound on tissue appear to be threshold effects, contrary to what is assumed
for X-ray. When tissue is repeatedly exposed to ultrasound, with rest intervals in between, there will likely
be no cumulative biological effect. If a certain threshold has been passed, biological effects may occur.
A temperature rise from 37º C to 41º C is permissible for extended periods, whereas a temperature rise
to 45º C may not be acceptable.
Acoustic output power test information is in the Appendix of this manual.
Implanted Devices
Implanted devices such as cardiac pacemakers should be avoided due to the possibility of affecting
their operation. Some plastics used in replacement surgery may be affected by absorption of ultrasonic
energy.
Studies Near Sensitive Tissues
Extreme care should be taken when treating areas near any sensitive nervous tissue. Extreme care
should be taken when treating areas near the eye because of the risk of damage to the retina.

Environmental Hazards

Battery and Instrument
Batteries must be recycled or disposed of according to your local ordinances.
Do not dispose of old instruments or lead acid batteries in land fi lls.
Ultrasound Coupling Gel
There are no potential environmental hazards from the gels recommended for use with the probes.
Radio Interference
This instrument is intended for use by health care professionals only
radio interference or may disrupt the operation of nearby equipment. It may be necessary to take
precautionary measures, such as reorienting or relocating equipment, or shielding the location.
This Doppler may experience a high pitched tone or buzzing noise from radio interference caused by a
cell phone, mobile service, neon sign, an electrocautery, fl uorescent lighting, or another Doppler.

Warranty

Parks Medical Electronics, Inc. warrants this Doppler against defects in materials and workmanship
for a period of one year, probes for six months. Parks will, at its discretion, replace or repair free of
charge, including labor, all parts which prove to be defective and subject to such warranty.
This warranty does not apply to any instrument or probe not used according to instructions or
damaged by abuse, accident, alteration, misuse, and/or tampering.
Technical Information and Notes
915-BL Dual Frequency Doppler
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This instrument may cause
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