B-K Medical Pro Focus 2202, User Manual

Page: 206 / 356

206 Chapter 14
Transducer Maintenance
See the General Transducer Information (BB0555) manual for information about
transducer maintenance.
Alignment of the Brachy Matrix
B-K Medical recommends that you check the alignment of the matrix once a month
(or more frequently if a misalignment is suspected).
NOTE: The best accuracy that can be expected is 3mm deviation.
To check the alignment of the matrix:
1 Fill a suitable tank with saline. The concentration of the saline depends on the
room temperature. It should be 4% NaCl at 25
°
C and 5% NaCl at 20
°
C.
2
Assemble the matrix and, with a transducer mounted, connect the plug of the
transducer to the scanner.
3 Immerse the transducer tip in the saline.
4
Start scanning to present an image on the monitor.
5 Superimpose the relevant puncture matrix template on the monitor.
6 Insert a needle through the matrix. Monitor the needle tip echo and measure the
deviation from the matrix point shown on the monitor.
7 Decide whether the accuracy is acceptable.
8
If the accuracy is not acceptable, contact your local B-K Medical service center.
Disposing of the Scanner
When the scanner is scrapped at the end of its life, national rules for the various
materials in each individual country must be followed.
The scanner contains many different materials, but none require any special
treatment compared with what would normally be expected for materials used in
electronic equipment.
Be aware, however, that the printed circuit boards are made of epoxy, the monitor’s
picture tube contains heavy metals and the scanner contains a small lithium battery.
For further information about the material composition of the scanner, contact your
B-K Medical service representative.
In general, dispose of the scanner in a way that minimizes the effects on the
environment.
References
[1] Nyström, B. Disinfection of surgical instruments. Journal of Hospital Infection 1981;
2:363-68.