Cirs Doppler String Phantom 043, Руководство пользователя

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MAINTENANCE INSTRUCTIONS
Making String Loops
Occasionally, string loops break and need to be replaced. You can order sets of 20 preformed loops from CIRS
(See Preformed String Loops for more information) or make your own loops using these instructions. In general
you want your string loop to have a small unobtrusive knot that will roll smoothly over the pulleys in the tank.
1. Set up two pins 15 3/16 inches (38.5 cm) apart. Push pins on a wooden measuring stick works well.
2. Form a loop of string around the pins. Any type of string will work but 3-0 surgical silk is recommended
because of its ultrasound scattering properties.
3. Tie a knot to secure the loop and trim the ends to about 1/4 inch (6 mm) long.
4. Put a very small dot of super glue on the knot. The glue should not soak into the ends of the string and make
them stiff.
5. After the super glue has dried roll the ends of the string between your fingers to separate the threads as
much as possible.
6. Apply rubber cement to the knot and string ends allow it to dry slightly and then roll the knot between your
fingers to form a smooth ball.
Ordering String Loops
You can order a pack of 20 preformed string loops made from 3-0 surgical silk. The Part number is 043SL.
Please call for current prices.
Cleaning the Doppler String Phantom
The Doppler String Phantom is designed to be virtually maintenance-free. You can clean the controller and tank
with a soft cloth dampened with water and mild detergent. Do not use disinfectants or solvent-based cleaners or
sprays. Avoid using solvents because they could weaken the tank.
Calibrating the Doppler String Phantom
The Doppler String Phantom is computer-controlled so you don't need to make any adjustments. However,
many customers choose to send their Doppler String Phantom back to CIRS each year for calibration certifica-
tion. The string speeds are checked at a variety of settings, using instruments that are certified according to
the National Institute of Standards and Technology (NIST). After verifying that the Doppler String Phantom is
functioning correctly, CIRS provides a calibration certificate and a complete test report. Contact CIRS for more
information regarding calibration service.