Shock wave therapy system
Siow, Shu Yi
Date of Issue2017-05-16
School of Mechanical and Aerospace Engineering
This report presents a piezoceramic transducer in an extracorporeal shock wave lithotripsy system. The piezoelectric transducer is powered by a function generator (AFG3022B, Tektronicx, Beaverton, OR), together with a 55dB RF Power amplifier (BT00250–AlphaS, TOMCO, Rochester, NY), converting electrical signal mechanical vibrations to energy such as shock waves, propagated into the water. The purpose of this report is to test the effect of Pulse Repetition Frequency (1Hz, 60 SW/min and 2Hz, 120 SW/min) on both low (230KHz) and high (1MHz) frequency. The materials and methods used would be under Extracorporeal Shock Wave Lithotripsy (ESWL). Using both 230KHz and 1MHz piezoceramic transducer, phantom stones that mimic stone fragmentation in the renal pelvis (plaster-of-paris material with a powder to water mixing ratio by weight of 2:1) were used for the experiment. Further fabrication of the piezoelectric lithotripter setup would be discussed in Chapter 3. Fixed and varied parameters will be stated in Chapter 4 before commencement of the experiment. A sample setup test was constructed to ensure that the phantom stone would break before moving on to the actual test. This report will also cover a discussion on the experimental results, how the experiment could be improvised and potential of future studies.
Final Year Project (FYP)
Nanyang Technological University