Abstract:
Ultrasound continues to be one of the major tissue heating modalities used
for the diathermy treatment of a number of medical conditions. Therefore there is
innovation that is continually increasing the quality of the ultrasound diathermy
systems currently available. However focus is just beginning to shift into the field of
low-cost systems to facilitate the mass population. In this work a high power
ultrasound system is developed that can deliver therapeutic acoustical energy waves
to the ultrasound transducer probe at user defined frequency of 1MHz and 3MHz.
Different output power and customized RCA connector facilitate the use of multiapplicator
or probe. Output parameter of tone-burst mode is introduced along with
continuous and pulsed mode. BJT is used for switching instead of FET, which has
added some extra consumption of power but has greatly reduced the price. Still the
low cost system is slightly held back with the high cost burden of piezoelectric
probe, but enhanced with the new parameter of tone-burst mode. Experimental
results are compared with simulation and practical tests with existing products. The
total system is implemented using local hardware resources and hence the system is
cost effective and beneficial for the third world countries.
